xref: /vim-8.2.3635/src/normal.c (revision eae1b91f)
1 /* vi:set ts=8 sts=4 sw=4 noet:
2  *
3  * VIM - Vi IMproved	by Bram Moolenaar
4  *
5  * Do ":help uganda"  in Vim to read copying and usage conditions.
6  * Do ":help credits" in Vim to see a list of people who contributed.
7  * See README.txt for an overview of the Vim source code.
8  */
9 /*
10  * normal.c:	Contains the main routine for processing characters in command
11  *		mode.  Communicates closely with the code in ops.c to handle
12  *		the operators.
13  */
14 
15 #include "vim.h"
16 
17 /*
18  * The Visual area is remembered for reselection.
19  */
20 static int	resel_VIsual_mode = NUL;	/* 'v', 'V', or Ctrl-V */
21 static linenr_T	resel_VIsual_line_count;	/* number of lines */
22 static colnr_T	resel_VIsual_vcol;		/* nr of cols or end col */
23 static int	VIsual_mode_orig = NUL;		/* saved Visual mode */
24 
25 static int	restart_VIsual_select = 0;
26 
27 #ifdef FEAT_EVAL
28 static void	set_vcount_ca(cmdarg_T *cap, int *set_prevcount);
29 #endif
30 static int	nv_compare(const void *s1, const void *s2);
31 static void	op_colon(oparg_T *oap);
32 static void	op_function(oparg_T *oap);
33 #if defined(FEAT_MOUSE)
34 static void	find_start_of_word(pos_T *);
35 static void	find_end_of_word(pos_T *);
36 static int	get_mouse_class(char_u *p);
37 #endif
38 static void	prep_redo(int regname, long, int, int, int, int, int);
39 static void	clearop(oparg_T *oap);
40 static void	clearopbeep(oparg_T *oap);
41 static void	unshift_special(cmdarg_T *cap);
42 static void	may_clear_cmdline(void);
43 #ifdef FEAT_CMDL_INFO
44 static void	del_from_showcmd(int);
45 #endif
46 
47 /*
48  * nv_*(): functions called to handle Normal and Visual mode commands.
49  * n_*(): functions called to handle Normal mode commands.
50  * v_*(): functions called to handle Visual mode commands.
51  */
52 static void	nv_ignore(cmdarg_T *cap);
53 static void	nv_nop(cmdarg_T *cap);
54 static void	nv_error(cmdarg_T *cap);
55 static void	nv_help(cmdarg_T *cap);
56 static void	nv_addsub(cmdarg_T *cap);
57 static void	nv_page(cmdarg_T *cap);
58 #ifdef FEAT_MOUSE
59 static void	nv_mousescroll(cmdarg_T *cap);
60 static void	nv_mouse(cmdarg_T *cap);
61 #endif
62 static void	nv_scroll_line(cmdarg_T *cap);
63 static void	nv_zet(cmdarg_T *cap);
64 #ifdef FEAT_GUI
65 static void	nv_ver_scrollbar(cmdarg_T *cap);
66 static void	nv_hor_scrollbar(cmdarg_T *cap);
67 #endif
68 #ifdef FEAT_GUI_TABLINE
69 static void	nv_tabline(cmdarg_T *cap);
70 static void	nv_tabmenu(cmdarg_T *cap);
71 #endif
72 static void	nv_exmode(cmdarg_T *cap);
73 static void	nv_colon(cmdarg_T *cap);
74 static void	nv_ctrlg(cmdarg_T *cap);
75 static void	nv_ctrlh(cmdarg_T *cap);
76 static void	nv_clear(cmdarg_T *cap);
77 static void	nv_ctrlo(cmdarg_T *cap);
78 static void	nv_hat(cmdarg_T *cap);
79 static void	nv_Zet(cmdarg_T *cap);
80 static void	nv_ident(cmdarg_T *cap);
81 static void	nv_tagpop(cmdarg_T *cap);
82 static void	nv_scroll(cmdarg_T *cap);
83 static void	nv_right(cmdarg_T *cap);
84 static void	nv_left(cmdarg_T *cap);
85 static void	nv_up(cmdarg_T *cap);
86 static void	nv_down(cmdarg_T *cap);
87 static void	nv_end(cmdarg_T *cap);
88 static void	nv_dollar(cmdarg_T *cap);
89 static void	nv_search(cmdarg_T *cap);
90 static void	nv_next(cmdarg_T *cap);
91 static int	normal_search(cmdarg_T *cap, int dir, char_u *pat, int opt);
92 static void	nv_csearch(cmdarg_T *cap);
93 static void	nv_brackets(cmdarg_T *cap);
94 static void	nv_percent(cmdarg_T *cap);
95 static void	nv_brace(cmdarg_T *cap);
96 static void	nv_mark(cmdarg_T *cap);
97 static void	nv_findpar(cmdarg_T *cap);
98 static void	nv_undo(cmdarg_T *cap);
99 static void	nv_kundo(cmdarg_T *cap);
100 static void	nv_Replace(cmdarg_T *cap);
101 static void	nv_replace(cmdarg_T *cap);
102 static void	nv_cursormark(cmdarg_T *cap, int flag, pos_T *pos);
103 static void	v_visop(cmdarg_T *cap);
104 static void	nv_subst(cmdarg_T *cap);
105 static void	nv_abbrev(cmdarg_T *cap);
106 static void	nv_optrans(cmdarg_T *cap);
107 static void	nv_gomark(cmdarg_T *cap);
108 static void	nv_pcmark(cmdarg_T *cap);
109 static void	nv_regname(cmdarg_T *cap);
110 static void	nv_visual(cmdarg_T *cap);
111 static void	n_start_visual_mode(int c);
112 static void	nv_window(cmdarg_T *cap);
113 static void	nv_suspend(cmdarg_T *cap);
114 static void	nv_g_cmd(cmdarg_T *cap);
115 static void	nv_dot(cmdarg_T *cap);
116 static void	nv_redo(cmdarg_T *cap);
117 static void	nv_Undo(cmdarg_T *cap);
118 static void	nv_tilde(cmdarg_T *cap);
119 static void	nv_operator(cmdarg_T *cap);
120 #ifdef FEAT_EVAL
121 static void	set_op_var(int optype);
122 #endif
123 static void	nv_lineop(cmdarg_T *cap);
124 static void	nv_home(cmdarg_T *cap);
125 static void	nv_pipe(cmdarg_T *cap);
126 static void	nv_bck_word(cmdarg_T *cap);
127 static void	nv_wordcmd(cmdarg_T *cap);
128 static void	nv_beginline(cmdarg_T *cap);
129 static void	adjust_cursor(oparg_T *oap);
130 static void	adjust_for_sel(cmdarg_T *cap);
131 static int	unadjust_for_sel(void);
132 static void	nv_select(cmdarg_T *cap);
133 static void	nv_goto(cmdarg_T *cap);
134 static void	nv_normal(cmdarg_T *cap);
135 static void	nv_esc(cmdarg_T *oap);
136 static void	nv_edit(cmdarg_T *cap);
137 static void	invoke_edit(cmdarg_T *cap, int repl, int cmd, int startln);
138 #ifdef FEAT_TEXTOBJ
139 static void	nv_object(cmdarg_T *cap);
140 #endif
141 static void	nv_record(cmdarg_T *cap);
142 static void	nv_at(cmdarg_T *cap);
143 static void	nv_halfpage(cmdarg_T *cap);
144 static void	nv_join(cmdarg_T *cap);
145 static void	nv_put(cmdarg_T *cap);
146 static void	nv_open(cmdarg_T *cap);
147 #ifdef FEAT_NETBEANS_INTG
148 static void	nv_nbcmd(cmdarg_T *cap);
149 #endif
150 #ifdef FEAT_DND
151 static void	nv_drop(cmdarg_T *cap);
152 #endif
153 static void	nv_cursorhold(cmdarg_T *cap);
154 static void	get_op_vcol(oparg_T *oap, colnr_T col, int initial);
155 
156 static char *e_noident = N_("E349: No identifier under cursor");
157 
158 /*
159  * Function to be called for a Normal or Visual mode command.
160  * The argument is a cmdarg_T.
161  */
162 typedef void (*nv_func_T)(cmdarg_T *cap);
163 
164 /* Values for cmd_flags. */
165 #define NV_NCH	    0x01	  /* may need to get a second char */
166 #define NV_NCH_NOP  (0x02|NV_NCH) /* get second char when no operator pending */
167 #define NV_NCH_ALW  (0x04|NV_NCH) /* always get a second char */
168 #define NV_LANG	    0x08	/* second char needs language adjustment */
169 
170 #define NV_SS	    0x10	/* may start selection */
171 #define NV_SSS	    0x20	/* may start selection with shift modifier */
172 #define NV_STS	    0x40	/* may stop selection without shift modif. */
173 #define NV_RL	    0x80	/* 'rightleft' modifies command */
174 #define NV_KEEPREG  0x100	/* don't clear regname */
175 #define NV_NCW	    0x200	/* not allowed in command-line window */
176 
177 /*
178  * Generally speaking, every Normal mode command should either clear any
179  * pending operator (with *clearop*()), or set the motion type variable
180  * oap->motion_type.
181  *
182  * When a cursor motion command is made, it is marked as being a character or
183  * line oriented motion.  Then, if an operator is in effect, the operation
184  * becomes character or line oriented accordingly.
185  */
186 
187 /*
188  * This table contains one entry for every Normal or Visual mode command.
189  * The order doesn't matter, init_normal_cmds() will create a sorted index.
190  * It is faster when all keys from zero to '~' are present.
191  */
192 static const struct nv_cmd
193 {
194     int		cmd_char;	/* (first) command character */
195     nv_func_T   cmd_func;	/* function for this command */
196     short_u	cmd_flags;	/* NV_ flags */
197     short	cmd_arg;	/* value for ca.arg */
198 } nv_cmds[] =
199 {
200     {NUL,	nv_error,	0,			0},
201     {Ctrl_A,	nv_addsub,	0,			0},
202     {Ctrl_B,	nv_page,	NV_STS,			BACKWARD},
203     {Ctrl_C,	nv_esc,		0,			TRUE},
204     {Ctrl_D,	nv_halfpage,	0,			0},
205     {Ctrl_E,	nv_scroll_line,	0,			TRUE},
206     {Ctrl_F,	nv_page,	NV_STS,			FORWARD},
207     {Ctrl_G,	nv_ctrlg,	0,			0},
208     {Ctrl_H,	nv_ctrlh,	0,			0},
209     {Ctrl_I,	nv_pcmark,	0,			0},
210     {NL,	nv_down,	0,			FALSE},
211     {Ctrl_K,	nv_error,	0,			0},
212     {Ctrl_L,	nv_clear,	0,			0},
213     {CAR,	nv_down,	0,			TRUE},
214     {Ctrl_N,	nv_down,	NV_STS,			FALSE},
215     {Ctrl_O,	nv_ctrlo,	0,			0},
216     {Ctrl_P,	nv_up,		NV_STS,			FALSE},
217     {Ctrl_Q,	nv_visual,	0,			FALSE},
218     {Ctrl_R,	nv_redo,	0,			0},
219     {Ctrl_S,	nv_ignore,	0,			0},
220     {Ctrl_T,	nv_tagpop,	NV_NCW,			0},
221     {Ctrl_U,	nv_halfpage,	0,			0},
222     {Ctrl_V,	nv_visual,	0,			FALSE},
223     {'V',	nv_visual,	0,			FALSE},
224     {'v',	nv_visual,	0,			FALSE},
225     {Ctrl_W,	nv_window,	0,			0},
226     {Ctrl_X,	nv_addsub,	0,			0},
227     {Ctrl_Y,	nv_scroll_line,	0,			FALSE},
228     {Ctrl_Z,	nv_suspend,	0,			0},
229     {ESC,	nv_esc,		0,			FALSE},
230     {Ctrl_BSL,	nv_normal,	NV_NCH_ALW,		0},
231     {Ctrl_RSB,	nv_ident,	NV_NCW,			0},
232     {Ctrl_HAT,	nv_hat,		NV_NCW,			0},
233     {Ctrl__,	nv_error,	0,			0},
234     {' ',	nv_right,	0,			0},
235     {'!',	nv_operator,	0,			0},
236     {'"',	nv_regname,	NV_NCH_NOP|NV_KEEPREG,	0},
237     {'#',	nv_ident,	0,			0},
238     {'$',	nv_dollar,	0,			0},
239     {'%',	nv_percent,	0,			0},
240     {'&',	nv_optrans,	0,			0},
241     {'\'',	nv_gomark,	NV_NCH_ALW,		TRUE},
242     {'(',	nv_brace,	0,			BACKWARD},
243     {')',	nv_brace,	0,			FORWARD},
244     {'*',	nv_ident,	0,			0},
245     {'+',	nv_down,	0,			TRUE},
246     {',',	nv_csearch,	0,			TRUE},
247     {'-',	nv_up,		0,			TRUE},
248     {'.',	nv_dot,		NV_KEEPREG,		0},
249     {'/',	nv_search,	0,			FALSE},
250     {'0',	nv_beginline,	0,			0},
251     {'1',	nv_ignore,	0,			0},
252     {'2',	nv_ignore,	0,			0},
253     {'3',	nv_ignore,	0,			0},
254     {'4',	nv_ignore,	0,			0},
255     {'5',	nv_ignore,	0,			0},
256     {'6',	nv_ignore,	0,			0},
257     {'7',	nv_ignore,	0,			0},
258     {'8',	nv_ignore,	0,			0},
259     {'9',	nv_ignore,	0,			0},
260     {':',	nv_colon,	0,			0},
261     {';',	nv_csearch,	0,			FALSE},
262     {'<',	nv_operator,	NV_RL,			0},
263     {'=',	nv_operator,	0,			0},
264     {'>',	nv_operator,	NV_RL,			0},
265     {'?',	nv_search,	0,			FALSE},
266     {'@',	nv_at,		NV_NCH_NOP,		FALSE},
267     {'A',	nv_edit,	0,			0},
268     {'B',	nv_bck_word,	0,			1},
269     {'C',	nv_abbrev,	NV_KEEPREG,		0},
270     {'D',	nv_abbrev,	NV_KEEPREG,		0},
271     {'E',	nv_wordcmd,	0,			TRUE},
272     {'F',	nv_csearch,	NV_NCH_ALW|NV_LANG,	BACKWARD},
273     {'G',	nv_goto,	0,			TRUE},
274     {'H',	nv_scroll,	0,			0},
275     {'I',	nv_edit,	0,			0},
276     {'J',	nv_join,	0,			0},
277     {'K',	nv_ident,	0,			0},
278     {'L',	nv_scroll,	0,			0},
279     {'M',	nv_scroll,	0,			0},
280     {'N',	nv_next,	0,			SEARCH_REV},
281     {'O',	nv_open,	0,			0},
282     {'P',	nv_put,		0,			0},
283     {'Q',	nv_exmode,	NV_NCW,			0},
284     {'R',	nv_Replace,	0,			FALSE},
285     {'S',	nv_subst,	NV_KEEPREG,		0},
286     {'T',	nv_csearch,	NV_NCH_ALW|NV_LANG,	BACKWARD},
287     {'U',	nv_Undo,	0,			0},
288     {'W',	nv_wordcmd,	0,			TRUE},
289     {'X',	nv_abbrev,	NV_KEEPREG,		0},
290     {'Y',	nv_abbrev,	NV_KEEPREG,		0},
291     {'Z',	nv_Zet,		NV_NCH_NOP|NV_NCW,	0},
292     {'[',	nv_brackets,	NV_NCH_ALW,		BACKWARD},
293     {'\\',	nv_error,	0,			0},
294     {']',	nv_brackets,	NV_NCH_ALW,		FORWARD},
295     {'^',	nv_beginline,	0,			BL_WHITE | BL_FIX},
296     {'_',	nv_lineop,	0,			0},
297     {'`',	nv_gomark,	NV_NCH_ALW,		FALSE},
298     {'a',	nv_edit,	NV_NCH,			0},
299     {'b',	nv_bck_word,	0,			0},
300     {'c',	nv_operator,	0,			0},
301     {'d',	nv_operator,	0,			0},
302     {'e',	nv_wordcmd,	0,			FALSE},
303     {'f',	nv_csearch,	NV_NCH_ALW|NV_LANG,	FORWARD},
304     {'g',	nv_g_cmd,	NV_NCH_ALW,		FALSE},
305     {'h',	nv_left,	NV_RL,			0},
306     {'i',	nv_edit,	NV_NCH,			0},
307     {'j',	nv_down,	0,			FALSE},
308     {'k',	nv_up,		0,			FALSE},
309     {'l',	nv_right,	NV_RL,			0},
310     {'m',	nv_mark,	NV_NCH_NOP,		0},
311     {'n',	nv_next,	0,			0},
312     {'o',	nv_open,	0,			0},
313     {'p',	nv_put,		0,			0},
314     {'q',	nv_record,	NV_NCH,			0},
315     {'r',	nv_replace,	NV_NCH_NOP|NV_LANG,	0},
316     {'s',	nv_subst,	NV_KEEPREG,		0},
317     {'t',	nv_csearch,	NV_NCH_ALW|NV_LANG,	FORWARD},
318     {'u',	nv_undo,	0,			0},
319     {'w',	nv_wordcmd,	0,			FALSE},
320     {'x',	nv_abbrev,	NV_KEEPREG,		0},
321     {'y',	nv_operator,	0,			0},
322     {'z',	nv_zet,		NV_NCH_ALW,		0},
323     {'{',	nv_findpar,	0,			BACKWARD},
324     {'|',	nv_pipe,	0,			0},
325     {'}',	nv_findpar,	0,			FORWARD},
326     {'~',	nv_tilde,	0,			0},
327 
328     /* pound sign */
329     {POUND,	nv_ident,	0,			0},
330 #ifdef FEAT_MOUSE
331     {K_MOUSEUP, nv_mousescroll,	0,			MSCR_UP},
332     {K_MOUSEDOWN, nv_mousescroll, 0,			MSCR_DOWN},
333     {K_MOUSELEFT, nv_mousescroll, 0,			MSCR_LEFT},
334     {K_MOUSERIGHT, nv_mousescroll, 0,			MSCR_RIGHT},
335     {K_LEFTMOUSE, nv_mouse,	0,			0},
336     {K_LEFTMOUSE_NM, nv_mouse,	0,			0},
337     {K_LEFTDRAG, nv_mouse,	0,			0},
338     {K_LEFTRELEASE, nv_mouse,	0,			0},
339     {K_LEFTRELEASE_NM, nv_mouse, 0,			0},
340     {K_MOUSEMOVE, nv_mouse,	0,			0},
341     {K_MIDDLEMOUSE, nv_mouse,	0,			0},
342     {K_MIDDLEDRAG, nv_mouse,	0,			0},
343     {K_MIDDLERELEASE, nv_mouse,	0,			0},
344     {K_RIGHTMOUSE, nv_mouse,	0,			0},
345     {K_RIGHTDRAG, nv_mouse,	0,			0},
346     {K_RIGHTRELEASE, nv_mouse,	0,			0},
347     {K_X1MOUSE, nv_mouse,	0,			0},
348     {K_X1DRAG, nv_mouse,	0,			0},
349     {K_X1RELEASE, nv_mouse,	0,			0},
350     {K_X2MOUSE, nv_mouse,	0,			0},
351     {K_X2DRAG, nv_mouse,	0,			0},
352     {K_X2RELEASE, nv_mouse,	0,			0},
353 #endif
354     {K_IGNORE,	nv_ignore,	NV_KEEPREG,		0},
355     {K_NOP,	nv_nop,		0,			0},
356     {K_INS,	nv_edit,	0,			0},
357     {K_KINS,	nv_edit,	0,			0},
358     {K_BS,	nv_ctrlh,	0,			0},
359     {K_UP,	nv_up,		NV_SSS|NV_STS,		FALSE},
360     {K_S_UP,	nv_page,	NV_SS,			BACKWARD},
361     {K_DOWN,	nv_down,	NV_SSS|NV_STS,		FALSE},
362     {K_S_DOWN,	nv_page,	NV_SS,			FORWARD},
363     {K_LEFT,	nv_left,	NV_SSS|NV_STS|NV_RL,	0},
364     {K_S_LEFT,	nv_bck_word,	NV_SS|NV_RL,		0},
365     {K_C_LEFT,	nv_bck_word,	NV_SSS|NV_RL|NV_STS,	1},
366     {K_RIGHT,	nv_right,	NV_SSS|NV_STS|NV_RL,	0},
367     {K_S_RIGHT,	nv_wordcmd,	NV_SS|NV_RL,		FALSE},
368     {K_C_RIGHT,	nv_wordcmd,	NV_SSS|NV_RL|NV_STS,	TRUE},
369     {K_PAGEUP,	nv_page,	NV_SSS|NV_STS,		BACKWARD},
370     {K_KPAGEUP,	nv_page,	NV_SSS|NV_STS,		BACKWARD},
371     {K_PAGEDOWN, nv_page,	NV_SSS|NV_STS,		FORWARD},
372     {K_KPAGEDOWN, nv_page,	NV_SSS|NV_STS,		FORWARD},
373     {K_END,	nv_end,		NV_SSS|NV_STS,		FALSE},
374     {K_KEND,	nv_end,		NV_SSS|NV_STS,		FALSE},
375     {K_S_END,	nv_end,		NV_SS,			FALSE},
376     {K_C_END,	nv_end,		NV_SSS|NV_STS,		TRUE},
377     {K_HOME,	nv_home,	NV_SSS|NV_STS,		0},
378     {K_KHOME,	nv_home,	NV_SSS|NV_STS,		0},
379     {K_S_HOME,	nv_home,	NV_SS,			0},
380     {K_C_HOME,	nv_goto,	NV_SSS|NV_STS,		FALSE},
381     {K_DEL,	nv_abbrev,	0,			0},
382     {K_KDEL,	nv_abbrev,	0,			0},
383     {K_UNDO,	nv_kundo,	0,			0},
384     {K_HELP,	nv_help,	NV_NCW,			0},
385     {K_F1,	nv_help,	NV_NCW,			0},
386     {K_XF1,	nv_help,	NV_NCW,			0},
387     {K_SELECT,	nv_select,	0,			0},
388 #ifdef FEAT_GUI
389     {K_VER_SCROLLBAR, nv_ver_scrollbar, 0,		0},
390     {K_HOR_SCROLLBAR, nv_hor_scrollbar, 0,		0},
391 #endif
392 #ifdef FEAT_GUI_TABLINE
393     {K_TABLINE, nv_tabline,	0,			0},
394     {K_TABMENU, nv_tabmenu,	0,			0},
395 #endif
396 #ifdef FEAT_NETBEANS_INTG
397     {K_F21,	nv_nbcmd,	NV_NCH_ALW,		0},
398 #endif
399 #ifdef FEAT_DND
400     {K_DROP,	nv_drop,	NV_STS,			0},
401 #endif
402     {K_CURSORHOLD, nv_cursorhold, NV_KEEPREG,		0},
403     {K_PS,	nv_edit,	0,			0},
404 };
405 
406 /* Number of commands in nv_cmds[]. */
407 #define NV_CMDS_SIZE (sizeof(nv_cmds) / sizeof(struct nv_cmd))
408 
409 /* Sorted index of commands in nv_cmds[]. */
410 static short nv_cmd_idx[NV_CMDS_SIZE];
411 
412 /* The highest index for which
413  * nv_cmds[idx].cmd_char == nv_cmd_idx[nv_cmds[idx].cmd_char] */
414 static int nv_max_linear;
415 
416 /*
417  * Compare functions for qsort() below, that checks the command character
418  * through the index in nv_cmd_idx[].
419  */
420     static int
421 nv_compare(const void *s1, const void *s2)
422 {
423     int		c1, c2;
424 
425     /* The commands are sorted on absolute value. */
426     c1 = nv_cmds[*(const short *)s1].cmd_char;
427     c2 = nv_cmds[*(const short *)s2].cmd_char;
428     if (c1 < 0)
429 	c1 = -c1;
430     if (c2 < 0)
431 	c2 = -c2;
432     return c1 - c2;
433 }
434 
435 /*
436  * Initialize the nv_cmd_idx[] table.
437  */
438     void
439 init_normal_cmds(void)
440 {
441     int		i;
442 
443     /* Fill the index table with a one to one relation. */
444     for (i = 0; i < (int)NV_CMDS_SIZE; ++i)
445 	nv_cmd_idx[i] = i;
446 
447     /* Sort the commands by the command character.  */
448     qsort((void *)&nv_cmd_idx, (size_t)NV_CMDS_SIZE, sizeof(short), nv_compare);
449 
450     /* Find the first entry that can't be indexed by the command character. */
451     for (i = 0; i < (int)NV_CMDS_SIZE; ++i)
452 	if (i != nv_cmds[nv_cmd_idx[i]].cmd_char)
453 	    break;
454     nv_max_linear = i - 1;
455 }
456 
457 /*
458  * Search for a command in the commands table.
459  * Returns -1 for invalid command.
460  */
461     static int
462 find_command(int cmdchar)
463 {
464     int		i;
465     int		idx;
466     int		top, bot;
467     int		c;
468 
469     /* A multi-byte character is never a command. */
470     if (cmdchar >= 0x100)
471 	return -1;
472 
473     /* We use the absolute value of the character.  Special keys have a
474      * negative value, but are sorted on their absolute value. */
475     if (cmdchar < 0)
476 	cmdchar = -cmdchar;
477 
478     /* If the character is in the first part: The character is the index into
479      * nv_cmd_idx[]. */
480     if (cmdchar <= nv_max_linear)
481 	return nv_cmd_idx[cmdchar];
482 
483     /* Perform a binary search. */
484     bot = nv_max_linear + 1;
485     top = NV_CMDS_SIZE - 1;
486     idx = -1;
487     while (bot <= top)
488     {
489 	i = (top + bot) / 2;
490 	c = nv_cmds[nv_cmd_idx[i]].cmd_char;
491 	if (c < 0)
492 	    c = -c;
493 	if (cmdchar == c)
494 	{
495 	    idx = nv_cmd_idx[i];
496 	    break;
497 	}
498 	if (cmdchar > c)
499 	    bot = i + 1;
500 	else
501 	    top = i - 1;
502     }
503     return idx;
504 }
505 
506 /*
507  * Execute a command in Normal mode.
508  */
509     void
510 normal_cmd(
511     oparg_T	*oap,
512     int		toplevel UNUSED)	/* TRUE when called from main() */
513 {
514     cmdarg_T	ca;			/* command arguments */
515     int		c;
516     int		ctrl_w = FALSE;		/* got CTRL-W command */
517     int		old_col = curwin->w_curswant;
518 #ifdef FEAT_CMDL_INFO
519     int		need_flushbuf;		/* need to call out_flush() */
520 #endif
521     pos_T	old_pos;		/* cursor position before command */
522     int		mapped_len;
523     static int	old_mapped_len = 0;
524     int		idx;
525 #ifdef FEAT_EVAL
526     int		set_prevcount = FALSE;
527 #endif
528 
529     vim_memset(&ca, 0, sizeof(ca));	/* also resets ca.retval */
530     ca.oap = oap;
531 
532     /* Use a count remembered from before entering an operator.  After typing
533      * "3d" we return from normal_cmd() and come back here, the "3" is
534      * remembered in "opcount". */
535     ca.opcount = opcount;
536 
537     /*
538      * If there is an operator pending, then the command we take this time
539      * will terminate it. Finish_op tells us to finish the operation before
540      * returning this time (unless the operation was cancelled).
541      */
542 #ifdef CURSOR_SHAPE
543     c = finish_op;
544 #endif
545     finish_op = (oap->op_type != OP_NOP);
546 #ifdef CURSOR_SHAPE
547     if (finish_op != c)
548     {
549 	ui_cursor_shape();		/* may show different cursor shape */
550 # ifdef FEAT_MOUSESHAPE
551 	update_mouseshape(-1);
552 # endif
553     }
554 #endif
555 
556     /* When not finishing an operator and no register name typed, reset the
557      * count. */
558     if (!finish_op && !oap->regname)
559     {
560 	ca.opcount = 0;
561 #ifdef FEAT_EVAL
562 	set_prevcount = TRUE;
563 #endif
564     }
565 
566     /* Restore counts from before receiving K_CURSORHOLD.  This means after
567      * typing "3", handling K_CURSORHOLD and then typing "2" we get "32", not
568      * "3 * 2". */
569     if (oap->prev_opcount > 0 || oap->prev_count0 > 0)
570     {
571 	ca.opcount = oap->prev_opcount;
572 	ca.count0 = oap->prev_count0;
573 	oap->prev_opcount = 0;
574 	oap->prev_count0 = 0;
575     }
576 
577     mapped_len = typebuf_maplen();
578 
579     State = NORMAL_BUSY;
580 #ifdef USE_ON_FLY_SCROLL
581     dont_scroll = FALSE;	/* allow scrolling here */
582 #endif
583 
584 #ifdef FEAT_EVAL
585     /* Set v:count here, when called from main() and not a stuffed
586      * command, so that v:count can be used in an expression mapping
587      * when there is no count. Do set it for redo. */
588     if (toplevel && readbuf1_empty())
589 	set_vcount_ca(&ca, &set_prevcount);
590 #endif
591 
592     /*
593      * Get the command character from the user.
594      */
595     c = safe_vgetc();
596     LANGMAP_ADJUST(c, get_real_state() != SELECTMODE);
597 
598     /*
599      * If a mapping was started in Visual or Select mode, remember the length
600      * of the mapping.  This is used below to not return to Insert mode for as
601      * long as the mapping is being executed.
602      */
603     if (restart_edit == 0)
604 	old_mapped_len = 0;
605     else if (old_mapped_len
606 		|| (VIsual_active && mapped_len == 0 && typebuf_maplen() > 0))
607 	old_mapped_len = typebuf_maplen();
608 
609     if (c == NUL)
610 	c = K_ZERO;
611 
612     /*
613      * In Select mode, typed text replaces the selection.
614      */
615     if (VIsual_active
616 	    && VIsual_select
617 	    && (vim_isprintc(c) || c == NL || c == CAR || c == K_KENTER))
618     {
619 	/* Fake a "c"hange command.  When "restart_edit" is set (e.g., because
620 	 * 'insertmode' is set) fake a "d"elete command, Insert mode will
621 	 * restart automatically.
622 	 * Insert the typed character in the typeahead buffer, so that it can
623 	 * be mapped in Insert mode.  Required for ":lmap" to work. */
624 	ins_char_typebuf(c);
625 	if (restart_edit != 0)
626 	    c = 'd';
627 	else
628 	    c = 'c';
629 	msg_nowait = TRUE;	/* don't delay going to insert mode */
630 	old_mapped_len = 0;	/* do go to Insert mode */
631     }
632 
633 #ifdef FEAT_CMDL_INFO
634     need_flushbuf = add_to_showcmd(c);
635 #endif
636 
637 getcount:
638     if (!(VIsual_active && VIsual_select))
639     {
640 	/*
641 	 * Handle a count before a command and compute ca.count0.
642 	 * Note that '0' is a command and not the start of a count, but it's
643 	 * part of a count after other digits.
644 	 */
645 	while (    (c >= '1' && c <= '9')
646 		|| (ca.count0 != 0 && (c == K_DEL || c == K_KDEL || c == '0')))
647 	{
648 	    if (c == K_DEL || c == K_KDEL)
649 	    {
650 		ca.count0 /= 10;
651 #ifdef FEAT_CMDL_INFO
652 		del_from_showcmd(4);	/* delete the digit and ~@% */
653 #endif
654 	    }
655 	    else
656 		ca.count0 = ca.count0 * 10 + (c - '0');
657 	    if (ca.count0 < 0)	    /* got too large! */
658 		ca.count0 = 999999999L;
659 #ifdef FEAT_EVAL
660 	    /* Set v:count here, when called from main() and not a stuffed
661 	     * command, so that v:count can be used in an expression mapping
662 	     * right after the count. Do set it for redo. */
663 	    if (toplevel && readbuf1_empty())
664 		set_vcount_ca(&ca, &set_prevcount);
665 #endif
666 	    if (ctrl_w)
667 	    {
668 		++no_mapping;
669 		++allow_keys;		/* no mapping for nchar, but keys */
670 	    }
671 	    ++no_zero_mapping;		/* don't map zero here */
672 	    c = plain_vgetc();
673 	    LANGMAP_ADJUST(c, TRUE);
674 	    --no_zero_mapping;
675 	    if (ctrl_w)
676 	    {
677 		--no_mapping;
678 		--allow_keys;
679 	    }
680 #ifdef FEAT_CMDL_INFO
681 	    need_flushbuf |= add_to_showcmd(c);
682 #endif
683 	}
684 
685 	/*
686 	 * If we got CTRL-W there may be a/another count
687 	 */
688 	if (c == Ctrl_W && !ctrl_w && oap->op_type == OP_NOP)
689 	{
690 	    ctrl_w = TRUE;
691 	    ca.opcount = ca.count0;	/* remember first count */
692 	    ca.count0 = 0;
693 	    ++no_mapping;
694 	    ++allow_keys;		/* no mapping for nchar, but keys */
695 	    c = plain_vgetc();		/* get next character */
696 	    LANGMAP_ADJUST(c, TRUE);
697 	    --no_mapping;
698 	    --allow_keys;
699 #ifdef FEAT_CMDL_INFO
700 	    need_flushbuf |= add_to_showcmd(c);
701 #endif
702 	    goto getcount;		/* jump back */
703 	}
704     }
705 
706     if (c == K_CURSORHOLD)
707     {
708 	/* Save the count values so that ca.opcount and ca.count0 are exactly
709 	 * the same when coming back here after handling K_CURSORHOLD. */
710 	oap->prev_opcount = ca.opcount;
711 	oap->prev_count0 = ca.count0;
712     }
713     else if (ca.opcount != 0)
714     {
715 	/*
716 	 * If we're in the middle of an operator (including after entering a
717 	 * yank buffer with '"') AND we had a count before the operator, then
718 	 * that count overrides the current value of ca.count0.
719 	 * What this means effectively, is that commands like "3dw" get turned
720 	 * into "d3w" which makes things fall into place pretty neatly.
721 	 * If you give a count before AND after the operator, they are
722 	 * multiplied.
723 	 */
724 	if (ca.count0)
725 	    ca.count0 *= ca.opcount;
726 	else
727 	    ca.count0 = ca.opcount;
728     }
729 
730     /*
731      * Always remember the count.  It will be set to zero (on the next call,
732      * above) when there is no pending operator.
733      * When called from main(), save the count for use by the "count" built-in
734      * variable.
735      */
736     ca.opcount = ca.count0;
737     ca.count1 = (ca.count0 == 0 ? 1 : ca.count0);
738 
739 #ifdef FEAT_EVAL
740     /*
741      * Only set v:count when called from main() and not a stuffed command.
742      * Do set it for redo.
743      */
744     if (toplevel && readbuf1_empty())
745 	set_vcount(ca.count0, ca.count1, set_prevcount);
746 #endif
747 
748     /*
749      * Find the command character in the table of commands.
750      * For CTRL-W we already got nchar when looking for a count.
751      */
752     if (ctrl_w)
753     {
754 	ca.nchar = c;
755 	ca.cmdchar = Ctrl_W;
756     }
757     else
758 	ca.cmdchar = c;
759     idx = find_command(ca.cmdchar);
760     if (idx < 0)
761     {
762 	/* Not a known command: beep. */
763 	clearopbeep(oap);
764 	goto normal_end;
765     }
766 
767     if (text_locked() && (nv_cmds[idx].cmd_flags & NV_NCW))
768     {
769 	/* This command is not allowed while editing a cmdline: beep. */
770 	clearopbeep(oap);
771 	text_locked_msg();
772 	goto normal_end;
773     }
774     if ((nv_cmds[idx].cmd_flags & NV_NCW) && curbuf_locked())
775 	goto normal_end;
776 
777     /*
778      * In Visual/Select mode, a few keys are handled in a special way.
779      */
780     if (VIsual_active)
781     {
782 	/* when 'keymodel' contains "stopsel" may stop Select/Visual mode */
783 	if (km_stopsel
784 		&& (nv_cmds[idx].cmd_flags & NV_STS)
785 		&& !(mod_mask & MOD_MASK_SHIFT))
786 	{
787 	    end_visual_mode();
788 	    redraw_curbuf_later(INVERTED);
789 	}
790 
791 	/* Keys that work different when 'keymodel' contains "startsel" */
792 	if (km_startsel)
793 	{
794 	    if (nv_cmds[idx].cmd_flags & NV_SS)
795 	    {
796 		unshift_special(&ca);
797 		idx = find_command(ca.cmdchar);
798 		if (idx < 0)
799 		{
800 		    /* Just in case */
801 		    clearopbeep(oap);
802 		    goto normal_end;
803 		}
804 	    }
805 	    else if ((nv_cmds[idx].cmd_flags & NV_SSS)
806 					       && (mod_mask & MOD_MASK_SHIFT))
807 		mod_mask &= ~MOD_MASK_SHIFT;
808 	}
809     }
810 
811 #ifdef FEAT_RIGHTLEFT
812     if (curwin->w_p_rl && KeyTyped && !KeyStuffed
813 					  && (nv_cmds[idx].cmd_flags & NV_RL))
814     {
815 	/* Invert horizontal movements and operations.  Only when typed by the
816 	 * user directly, not when the result of a mapping or "x" translated
817 	 * to "dl". */
818 	switch (ca.cmdchar)
819 	{
820 	    case 'l':	    ca.cmdchar = 'h'; break;
821 	    case K_RIGHT:   ca.cmdchar = K_LEFT; break;
822 	    case K_S_RIGHT: ca.cmdchar = K_S_LEFT; break;
823 	    case K_C_RIGHT: ca.cmdchar = K_C_LEFT; break;
824 	    case 'h':	    ca.cmdchar = 'l'; break;
825 	    case K_LEFT:    ca.cmdchar = K_RIGHT; break;
826 	    case K_S_LEFT:  ca.cmdchar = K_S_RIGHT; break;
827 	    case K_C_LEFT:  ca.cmdchar = K_C_RIGHT; break;
828 	    case '>':	    ca.cmdchar = '<'; break;
829 	    case '<':	    ca.cmdchar = '>'; break;
830 	}
831 	idx = find_command(ca.cmdchar);
832     }
833 #endif
834 
835     /*
836      * Get an additional character if we need one.
837      */
838     if ((nv_cmds[idx].cmd_flags & NV_NCH)
839 	    && (((nv_cmds[idx].cmd_flags & NV_NCH_NOP) == NV_NCH_NOP
840 		    && oap->op_type == OP_NOP)
841 		|| (nv_cmds[idx].cmd_flags & NV_NCH_ALW) == NV_NCH_ALW
842 		|| (ca.cmdchar == 'q'
843 		    && oap->op_type == OP_NOP
844 		    && reg_recording == 0
845 		    && reg_executing == 0)
846 		|| ((ca.cmdchar == 'a' || ca.cmdchar == 'i')
847 		    && (oap->op_type != OP_NOP || VIsual_active))))
848     {
849 	int	*cp;
850 	int	repl = FALSE;	/* get character for replace mode */
851 	int	lit = FALSE;	/* get extra character literally */
852 	int	langmap_active = FALSE;    /* using :lmap mappings */
853 	int	lang;		/* getting a text character */
854 #ifdef HAVE_INPUT_METHOD
855 	int	save_smd;	/* saved value of p_smd */
856 #endif
857 
858 	++no_mapping;
859 	++allow_keys;		/* no mapping for nchar, but allow key codes */
860 	/* Don't generate a CursorHold event here, most commands can't handle
861 	 * it, e.g., nv_replace(), nv_csearch(). */
862 	did_cursorhold = TRUE;
863 	if (ca.cmdchar == 'g')
864 	{
865 	    /*
866 	     * For 'g' get the next character now, so that we can check for
867 	     * "gr", "g'" and "g`".
868 	     */
869 	    ca.nchar = plain_vgetc();
870 	    LANGMAP_ADJUST(ca.nchar, TRUE);
871 #ifdef FEAT_CMDL_INFO
872 	    need_flushbuf |= add_to_showcmd(ca.nchar);
873 #endif
874 	    if (ca.nchar == 'r' || ca.nchar == '\'' || ca.nchar == '`'
875 						       || ca.nchar == Ctrl_BSL)
876 	    {
877 		cp = &ca.extra_char;	/* need to get a third character */
878 		if (ca.nchar != 'r')
879 		    lit = TRUE;			/* get it literally */
880 		else
881 		    repl = TRUE;		/* get it in replace mode */
882 	    }
883 	    else
884 		cp = NULL;		/* no third character needed */
885 	}
886 	else
887 	{
888 	    if (ca.cmdchar == 'r')		/* get it in replace mode */
889 		repl = TRUE;
890 	    cp = &ca.nchar;
891 	}
892 	lang = (repl || (nv_cmds[idx].cmd_flags & NV_LANG));
893 
894 	/*
895 	 * Get a second or third character.
896 	 */
897 	if (cp != NULL)
898 	{
899 #ifdef CURSOR_SHAPE
900 	    if (repl)
901 	    {
902 		State = REPLACE;	/* pretend Replace mode */
903 		ui_cursor_shape();	/* show different cursor shape */
904 	    }
905 #endif
906 	    if (lang && curbuf->b_p_iminsert == B_IMODE_LMAP)
907 	    {
908 		/* Allow mappings defined with ":lmap". */
909 		--no_mapping;
910 		--allow_keys;
911 		if (repl)
912 		    State = LREPLACE;
913 		else
914 		    State = LANGMAP;
915 		langmap_active = TRUE;
916 	    }
917 #ifdef HAVE_INPUT_METHOD
918 	    save_smd = p_smd;
919 	    p_smd = FALSE;	/* Don't let the IM code show the mode here */
920 	    if (lang && curbuf->b_p_iminsert == B_IMODE_IM)
921 		im_set_active(TRUE);
922 #endif
923 
924 	    *cp = plain_vgetc();
925 
926 	    if (langmap_active)
927 	    {
928 		/* Undo the decrement done above */
929 		++no_mapping;
930 		++allow_keys;
931 		State = NORMAL_BUSY;
932 	    }
933 #ifdef HAVE_INPUT_METHOD
934 	    if (lang)
935 	    {
936 		if (curbuf->b_p_iminsert != B_IMODE_LMAP)
937 		    im_save_status(&curbuf->b_p_iminsert);
938 		im_set_active(FALSE);
939 	    }
940 	    p_smd = save_smd;
941 #endif
942 #ifdef CURSOR_SHAPE
943 	    State = NORMAL_BUSY;
944 #endif
945 #ifdef FEAT_CMDL_INFO
946 	    need_flushbuf |= add_to_showcmd(*cp);
947 #endif
948 
949 	    if (!lit)
950 	    {
951 #ifdef FEAT_DIGRAPHS
952 		/* Typing CTRL-K gets a digraph. */
953 		if (*cp == Ctrl_K
954 			&& ((nv_cmds[idx].cmd_flags & NV_LANG)
955 			    || cp == &ca.extra_char)
956 			&& vim_strchr(p_cpo, CPO_DIGRAPH) == NULL)
957 		{
958 		    c = get_digraph(FALSE);
959 		    if (c > 0)
960 		    {
961 			*cp = c;
962 # ifdef FEAT_CMDL_INFO
963 			/* Guessing how to update showcmd here... */
964 			del_from_showcmd(3);
965 			need_flushbuf |= add_to_showcmd(*cp);
966 # endif
967 		    }
968 		}
969 #endif
970 
971 		/* adjust chars > 127, except after "tTfFr" commands */
972 		LANGMAP_ADJUST(*cp, !lang);
973 #ifdef FEAT_RIGHTLEFT
974 		/* adjust Hebrew mapped char */
975 		if (p_hkmap && lang && KeyTyped)
976 		    *cp = hkmap(*cp);
977 #endif
978 	    }
979 
980 	    /*
981 	     * When the next character is CTRL-\ a following CTRL-N means the
982 	     * command is aborted and we go to Normal mode.
983 	     */
984 	    if (cp == &ca.extra_char
985 		    && ca.nchar == Ctrl_BSL
986 		    && (ca.extra_char == Ctrl_N || ca.extra_char == Ctrl_G))
987 	    {
988 		ca.cmdchar = Ctrl_BSL;
989 		ca.nchar = ca.extra_char;
990 		idx = find_command(ca.cmdchar);
991 	    }
992 	    else if ((ca.nchar == 'n' || ca.nchar == 'N') && ca.cmdchar == 'g')
993 		ca.oap->op_type = get_op_type(*cp, NUL);
994 	    else if (*cp == Ctrl_BSL)
995 	    {
996 		long towait = (p_ttm >= 0 ? p_ttm : p_tm);
997 
998 		/* There is a busy wait here when typing "f<C-\>" and then
999 		 * something different from CTRL-N.  Can't be avoided. */
1000 		while ((c = vpeekc()) <= 0 && towait > 0L)
1001 		{
1002 		    do_sleep(towait > 50L ? 50L : towait);
1003 		    towait -= 50L;
1004 		}
1005 		if (c > 0)
1006 		{
1007 		    c = plain_vgetc();
1008 		    if (c != Ctrl_N && c != Ctrl_G)
1009 			vungetc(c);
1010 		    else
1011 		    {
1012 			ca.cmdchar = Ctrl_BSL;
1013 			ca.nchar = c;
1014 			idx = find_command(ca.cmdchar);
1015 		    }
1016 		}
1017 	    }
1018 
1019 	    /* When getting a text character and the next character is a
1020 	     * multi-byte character, it could be a composing character.
1021 	     * However, don't wait for it to arrive. Also, do enable mapping,
1022 	     * because if it's put back with vungetc() it's too late to apply
1023 	     * mapping. */
1024 	    --no_mapping;
1025 	    while (enc_utf8 && lang && (c = vpeekc()) > 0
1026 				 && (c >= 0x100 || MB_BYTE2LEN(vpeekc()) > 1))
1027 	    {
1028 		c = plain_vgetc();
1029 		if (!utf_iscomposing(c))
1030 		{
1031 		    vungetc(c);		/* it wasn't, put it back */
1032 		    break;
1033 		}
1034 		else if (ca.ncharC1 == 0)
1035 		    ca.ncharC1 = c;
1036 		else
1037 		    ca.ncharC2 = c;
1038 	    }
1039 	    ++no_mapping;
1040 	}
1041 	--no_mapping;
1042 	--allow_keys;
1043     }
1044 
1045 #ifdef FEAT_CMDL_INFO
1046     /*
1047      * Flush the showcmd characters onto the screen so we can see them while
1048      * the command is being executed.  Only do this when the shown command was
1049      * actually displayed, otherwise this will slow down a lot when executing
1050      * mappings.
1051      */
1052     if (need_flushbuf)
1053 	out_flush();
1054 #endif
1055     if (ca.cmdchar != K_IGNORE)
1056 	did_cursorhold = FALSE;
1057 
1058     State = NORMAL;
1059 
1060     if (ca.nchar == ESC)
1061     {
1062 	clearop(oap);
1063 	if (restart_edit == 0 && goto_im())
1064 	    restart_edit = 'a';
1065 	goto normal_end;
1066     }
1067 
1068     if (ca.cmdchar != K_IGNORE)
1069     {
1070 	msg_didout = FALSE;    /* don't scroll screen up for normal command */
1071 	msg_col = 0;
1072     }
1073 
1074     old_pos = curwin->w_cursor;		/* remember where cursor was */
1075 
1076     /* When 'keymodel' contains "startsel" some keys start Select/Visual
1077      * mode. */
1078     if (!VIsual_active && km_startsel)
1079     {
1080 	if (nv_cmds[idx].cmd_flags & NV_SS)
1081 	{
1082 	    start_selection();
1083 	    unshift_special(&ca);
1084 	    idx = find_command(ca.cmdchar);
1085 	}
1086 	else if ((nv_cmds[idx].cmd_flags & NV_SSS)
1087 					   && (mod_mask & MOD_MASK_SHIFT))
1088 	{
1089 	    start_selection();
1090 	    mod_mask &= ~MOD_MASK_SHIFT;
1091 	}
1092     }
1093 
1094     /*
1095      * Execute the command!
1096      * Call the command function found in the commands table.
1097      */
1098     ca.arg = nv_cmds[idx].cmd_arg;
1099     (nv_cmds[idx].cmd_func)(&ca);
1100 
1101     /*
1102      * If we didn't start or finish an operator, reset oap->regname, unless we
1103      * need it later.
1104      */
1105     if (!finish_op
1106 	    && !oap->op_type
1107 	    && (idx < 0 || !(nv_cmds[idx].cmd_flags & NV_KEEPREG)))
1108     {
1109 	clearop(oap);
1110 #ifdef FEAT_EVAL
1111 	{
1112 	    int regname = 0;
1113 
1114 	    /* Adjust the register according to 'clipboard', so that when
1115 	     * "unnamed" is present it becomes '*' or '+' instead of '"'. */
1116 # ifdef FEAT_CLIPBOARD
1117 	    adjust_clip_reg(&regname);
1118 # endif
1119 	    set_reg_var(regname);
1120 	}
1121 #endif
1122     }
1123 
1124     /* Get the length of mapped chars again after typing a count, second
1125      * character or "z333<cr>". */
1126     if (old_mapped_len > 0)
1127 	old_mapped_len = typebuf_maplen();
1128 
1129     /*
1130      * If an operation is pending, handle it...
1131      */
1132     do_pending_operator(&ca, old_col, FALSE);
1133 
1134     /*
1135      * Wait for a moment when a message is displayed that will be overwritten
1136      * by the mode message.
1137      * In Visual mode and with "^O" in Insert mode, a short message will be
1138      * overwritten by the mode message.  Wait a bit, until a key is hit.
1139      * In Visual mode, it's more important to keep the Visual area updated
1140      * than keeping a message (e.g. from a /pat search).
1141      * Only do this if the command was typed, not from a mapping.
1142      * Don't wait when emsg_silent is non-zero.
1143      * Also wait a bit after an error message, e.g. for "^O:".
1144      * Don't redraw the screen, it would remove the message.
1145      */
1146     if (       ((p_smd
1147 		    && msg_silent == 0
1148 		    && (restart_edit != 0
1149 			|| (VIsual_active
1150 			    && old_pos.lnum == curwin->w_cursor.lnum
1151 			    && old_pos.col == curwin->w_cursor.col)
1152 		       )
1153 		    && (clear_cmdline
1154 			|| redraw_cmdline)
1155 		    && (msg_didout || (msg_didany && msg_scroll))
1156 		    && !msg_nowait
1157 		    && KeyTyped)
1158 		|| (restart_edit != 0
1159 		    && !VIsual_active
1160 		    && (msg_scroll
1161 			|| emsg_on_display)))
1162 	    && oap->regname == 0
1163 	    && !(ca.retval & CA_COMMAND_BUSY)
1164 	    && stuff_empty()
1165 	    && typebuf_typed()
1166 	    && emsg_silent == 0
1167 	    && !did_wait_return
1168 	    && oap->op_type == OP_NOP)
1169     {
1170 	int	save_State = State;
1171 
1172 	/* Draw the cursor with the right shape here */
1173 	if (restart_edit != 0)
1174 	    State = INSERT;
1175 
1176 	/* If need to redraw, and there is a "keep_msg", redraw before the
1177 	 * delay */
1178 	if (must_redraw && keep_msg != NULL && !emsg_on_display)
1179 	{
1180 	    char_u	*kmsg;
1181 
1182 	    kmsg = keep_msg;
1183 	    keep_msg = NULL;
1184 	    /* showmode() will clear keep_msg, but we want to use it anyway */
1185 	    update_screen(0);
1186 	    /* now reset it, otherwise it's put in the history again */
1187 	    keep_msg = kmsg;
1188 	    msg_attr((char *)kmsg, keep_msg_attr);
1189 	    vim_free(kmsg);
1190 	}
1191 	setcursor();
1192 	cursor_on();
1193 	out_flush();
1194 	if (msg_scroll || emsg_on_display)
1195 	    ui_delay(1000L, TRUE);	/* wait at least one second */
1196 	ui_delay(3000L, FALSE);		/* wait up to three seconds */
1197 	State = save_State;
1198 
1199 	msg_scroll = FALSE;
1200 	emsg_on_display = FALSE;
1201     }
1202 
1203     /*
1204      * Finish up after executing a Normal mode command.
1205      */
1206 normal_end:
1207 
1208     msg_nowait = FALSE;
1209 
1210     /* Reset finish_op, in case it was set */
1211 #ifdef CURSOR_SHAPE
1212     c = finish_op;
1213 #endif
1214     finish_op = FALSE;
1215 #ifdef CURSOR_SHAPE
1216     /* Redraw the cursor with another shape, if we were in Operator-pending
1217      * mode or did a replace command. */
1218     if (c || ca.cmdchar == 'r')
1219     {
1220 	ui_cursor_shape();		/* may show different cursor shape */
1221 # ifdef FEAT_MOUSESHAPE
1222 	update_mouseshape(-1);
1223 # endif
1224     }
1225 #endif
1226 
1227 #ifdef FEAT_CMDL_INFO
1228     if (oap->op_type == OP_NOP && oap->regname == 0
1229 	    && ca.cmdchar != K_CURSORHOLD)
1230 	clear_showcmd();
1231 #endif
1232 
1233     checkpcmark();		/* check if we moved since setting pcmark */
1234     vim_free(ca.searchbuf);
1235 
1236     if (has_mbyte)
1237 	mb_adjust_cursor();
1238 
1239     if (curwin->w_p_scb && toplevel)
1240     {
1241 	validate_cursor();	/* may need to update w_leftcol */
1242 	do_check_scrollbind(TRUE);
1243     }
1244 
1245     if (curwin->w_p_crb && toplevel)
1246     {
1247 	validate_cursor();	/* may need to update w_leftcol */
1248 	do_check_cursorbind();
1249     }
1250 
1251 #ifdef FEAT_TERMINAL
1252     /* don't go to Insert mode if a terminal has a running job */
1253     if (term_job_running(curbuf->b_term))
1254 	restart_edit = 0;
1255 #endif
1256 
1257     /*
1258      * May restart edit(), if we got here with CTRL-O in Insert mode (but not
1259      * if still inside a mapping that started in Visual mode).
1260      * May switch from Visual to Select mode after CTRL-O command.
1261      */
1262     if (       oap->op_type == OP_NOP
1263 	    && ((restart_edit != 0 && !VIsual_active && old_mapped_len == 0)
1264 		|| restart_VIsual_select == 1)
1265 	    && !(ca.retval & CA_COMMAND_BUSY)
1266 	    && stuff_empty()
1267 	    && oap->regname == 0)
1268     {
1269 	if (restart_VIsual_select == 1)
1270 	{
1271 	    VIsual_select = TRUE;
1272 	    showmode();
1273 	    restart_VIsual_select = 0;
1274 	}
1275 	if (restart_edit != 0 && !VIsual_active && old_mapped_len == 0)
1276 	    (void)edit(restart_edit, FALSE, 1L);
1277     }
1278 
1279     if (restart_VIsual_select == 2)
1280 	restart_VIsual_select = 1;
1281 
1282     /* Save count before an operator for next time. */
1283     opcount = ca.opcount;
1284 }
1285 
1286 #ifdef FEAT_EVAL
1287 /*
1288  * Set v:count and v:count1 according to "cap".
1289  * Set v:prevcount only when "set_prevcount" is TRUE.
1290  */
1291     static void
1292 set_vcount_ca(cmdarg_T *cap, int *set_prevcount)
1293 {
1294     long count = cap->count0;
1295 
1296     /* multiply with cap->opcount the same way as above */
1297     if (cap->opcount != 0)
1298 	count = cap->opcount * (count == 0 ? 1 : count);
1299     set_vcount(count, count == 0 ? 1 : count, *set_prevcount);
1300     *set_prevcount = FALSE;  /* only set v:prevcount once */
1301 }
1302 #endif
1303 
1304 /*
1305  * Handle an operator after Visual mode or when the movement is finished.
1306  * "gui_yank" is true when yanking text for the clipboard.
1307  */
1308     void
1309 do_pending_operator(cmdarg_T *cap, int old_col, int gui_yank)
1310 {
1311     oparg_T	*oap = cap->oap;
1312     pos_T	old_cursor;
1313     int		empty_region_error;
1314     int		restart_edit_save;
1315 #ifdef FEAT_LINEBREAK
1316     int		lbr_saved = curwin->w_p_lbr;
1317 #endif
1318 
1319     /* The visual area is remembered for redo */
1320     static int	    redo_VIsual_mode = NUL; /* 'v', 'V', or Ctrl-V */
1321     static linenr_T redo_VIsual_line_count; /* number of lines */
1322     static colnr_T  redo_VIsual_vcol;	    /* number of cols or end column */
1323     static long	    redo_VIsual_count;	    /* count for Visual operator */
1324     static int	    redo_VIsual_arg;	    /* extra argument */
1325     int		    include_line_break = FALSE;
1326 
1327 #if defined(FEAT_CLIPBOARD)
1328     /*
1329      * Yank the visual area into the GUI selection register before we operate
1330      * on it and lose it forever.
1331      * Don't do it if a specific register was specified, so that ""x"*P works.
1332      * This could call do_pending_operator() recursively, but that's OK
1333      * because gui_yank will be TRUE for the nested call.
1334      */
1335     if ((clip_star.available || clip_plus.available)
1336 	    && oap->op_type != OP_NOP
1337 	    && !gui_yank
1338 	    && VIsual_active
1339 	    && !redo_VIsual_busy
1340 	    && oap->regname == 0)
1341 	clip_auto_select();
1342 #endif
1343     old_cursor = curwin->w_cursor;
1344 
1345     /*
1346      * If an operation is pending, handle it...
1347      */
1348     if ((finish_op || VIsual_active) && oap->op_type != OP_NOP)
1349     {
1350 	// Yank can be redone when 'y' is in 'cpoptions', but not when yanking
1351 	// for the clipboard.
1352 	int	redo_yank = vim_strchr(p_cpo, CPO_YANK) != NULL && !gui_yank;
1353 
1354 #ifdef FEAT_LINEBREAK
1355 	/* Avoid a problem with unwanted linebreaks in block mode. */
1356 	if (curwin->w_p_lbr)
1357 	    curwin->w_valid &= ~VALID_VIRTCOL;
1358 	curwin->w_p_lbr = FALSE;
1359 #endif
1360 	oap->is_VIsual = VIsual_active;
1361 	if (oap->motion_force == 'V')
1362 	    oap->motion_type = MLINE;
1363 	else if (oap->motion_force == 'v')
1364 	{
1365 	    /* If the motion was linewise, "inclusive" will not have been set.
1366 	     * Use "exclusive" to be consistent.  Makes "dvj" work nice. */
1367 	    if (oap->motion_type == MLINE)
1368 		oap->inclusive = FALSE;
1369 	    /* If the motion already was characterwise, toggle "inclusive" */
1370 	    else if (oap->motion_type == MCHAR)
1371 		oap->inclusive = !oap->inclusive;
1372 	    oap->motion_type = MCHAR;
1373 	}
1374 	else if (oap->motion_force == Ctrl_V)
1375 	{
1376 	    /* Change line- or characterwise motion into Visual block mode. */
1377 	    if (!VIsual_active)
1378 	    {
1379 		VIsual_active = TRUE;
1380 		VIsual = oap->start;
1381 	    }
1382 	    VIsual_mode = Ctrl_V;
1383 	    VIsual_select = FALSE;
1384 	    VIsual_reselect = FALSE;
1385 	}
1386 
1387 	/* Only redo yank when 'y' flag is in 'cpoptions'. */
1388 	/* Never redo "zf" (define fold). */
1389 	if ((redo_yank || oap->op_type != OP_YANK)
1390 		&& ((!VIsual_active || oap->motion_force)
1391 		    /* Also redo Operator-pending Visual mode mappings */
1392 		    || (VIsual_active && cap->cmdchar == ':'
1393 						 && oap->op_type != OP_COLON))
1394 		&& cap->cmdchar != 'D'
1395 #ifdef FEAT_FOLDING
1396 		&& oap->op_type != OP_FOLD
1397 		&& oap->op_type != OP_FOLDOPEN
1398 		&& oap->op_type != OP_FOLDOPENREC
1399 		&& oap->op_type != OP_FOLDCLOSE
1400 		&& oap->op_type != OP_FOLDCLOSEREC
1401 		&& oap->op_type != OP_FOLDDEL
1402 		&& oap->op_type != OP_FOLDDELREC
1403 #endif
1404 		)
1405 	{
1406 	    prep_redo(oap->regname, cap->count0,
1407 		    get_op_char(oap->op_type), get_extra_op_char(oap->op_type),
1408 		    oap->motion_force, cap->cmdchar, cap->nchar);
1409 	    if (cap->cmdchar == '/' || cap->cmdchar == '?') /* was a search */
1410 	    {
1411 		/*
1412 		 * If 'cpoptions' does not contain 'r', insert the search
1413 		 * pattern to really repeat the same command.
1414 		 */
1415 		if (vim_strchr(p_cpo, CPO_REDO) == NULL)
1416 		    AppendToRedobuffLit(cap->searchbuf, -1);
1417 		AppendToRedobuff(NL_STR);
1418 	    }
1419 	    else if (cap->cmdchar == ':')
1420 	    {
1421 		/* do_cmdline() has stored the first typed line in
1422 		 * "repeat_cmdline".  When several lines are typed repeating
1423 		 * won't be possible. */
1424 		if (repeat_cmdline == NULL)
1425 		    ResetRedobuff();
1426 		else
1427 		{
1428 		    AppendToRedobuffLit(repeat_cmdline, -1);
1429 		    AppendToRedobuff(NL_STR);
1430 		    VIM_CLEAR(repeat_cmdline);
1431 		}
1432 	    }
1433 	}
1434 
1435 	if (redo_VIsual_busy)
1436 	{
1437 	    /* Redo of an operation on a Visual area. Use the same size from
1438 	     * redo_VIsual_line_count and redo_VIsual_vcol. */
1439 	    oap->start = curwin->w_cursor;
1440 	    curwin->w_cursor.lnum += redo_VIsual_line_count - 1;
1441 	    if (curwin->w_cursor.lnum > curbuf->b_ml.ml_line_count)
1442 		curwin->w_cursor.lnum = curbuf->b_ml.ml_line_count;
1443 	    VIsual_mode = redo_VIsual_mode;
1444 	    if (redo_VIsual_vcol == MAXCOL || VIsual_mode == 'v')
1445 	    {
1446 		if (VIsual_mode == 'v')
1447 		{
1448 		    if (redo_VIsual_line_count <= 1)
1449 		    {
1450 			validate_virtcol();
1451 			curwin->w_curswant =
1452 				     curwin->w_virtcol + redo_VIsual_vcol - 1;
1453 		    }
1454 		    else
1455 			curwin->w_curswant = redo_VIsual_vcol;
1456 		}
1457 		else
1458 		{
1459 		    curwin->w_curswant = MAXCOL;
1460 		}
1461 		coladvance(curwin->w_curswant);
1462 	    }
1463 	    cap->count0 = redo_VIsual_count;
1464 	    if (redo_VIsual_count != 0)
1465 		cap->count1 = redo_VIsual_count;
1466 	    else
1467 		cap->count1 = 1;
1468 	}
1469 	else if (VIsual_active)
1470 	{
1471 	    if (!gui_yank)
1472 	    {
1473 		/* Save the current VIsual area for '< and '> marks, and "gv" */
1474 		curbuf->b_visual.vi_start = VIsual;
1475 		curbuf->b_visual.vi_end = curwin->w_cursor;
1476 		curbuf->b_visual.vi_mode = VIsual_mode;
1477 		if (VIsual_mode_orig != NUL)
1478 		{
1479 		    curbuf->b_visual.vi_mode = VIsual_mode_orig;
1480 		    VIsual_mode_orig = NUL;
1481 		}
1482 		curbuf->b_visual.vi_curswant = curwin->w_curswant;
1483 # ifdef FEAT_EVAL
1484 		curbuf->b_visual_mode_eval = VIsual_mode;
1485 # endif
1486 	    }
1487 
1488 	    /* In Select mode, a linewise selection is operated upon like a
1489 	     * characterwise selection.
1490 	     * Special case: gH<Del> deletes the last line. */
1491 	    if (VIsual_select && VIsual_mode == 'V'
1492 					    && cap->oap->op_type != OP_DELETE)
1493 	    {
1494 		if (LT_POS(VIsual, curwin->w_cursor))
1495 		{
1496 		    VIsual.col = 0;
1497 		    curwin->w_cursor.col =
1498 			       (colnr_T)STRLEN(ml_get(curwin->w_cursor.lnum));
1499 		}
1500 		else
1501 		{
1502 		    curwin->w_cursor.col = 0;
1503 		    VIsual.col = (colnr_T)STRLEN(ml_get(VIsual.lnum));
1504 		}
1505 		VIsual_mode = 'v';
1506 	    }
1507 	    /* If 'selection' is "exclusive", backup one character for
1508 	     * charwise selections. */
1509 	    else if (VIsual_mode == 'v')
1510 		include_line_break = unadjust_for_sel();
1511 
1512 	    oap->start = VIsual;
1513 	    if (VIsual_mode == 'V')
1514 	    {
1515 		oap->start.col = 0;
1516 		oap->start.coladd = 0;
1517 	    }
1518 	}
1519 
1520 	/*
1521 	 * Set oap->start to the first position of the operated text, oap->end
1522 	 * to the end of the operated text.  w_cursor is equal to oap->start.
1523 	 */
1524 	if (LT_POS(oap->start, curwin->w_cursor))
1525 	{
1526 #ifdef FEAT_FOLDING
1527 	    /* Include folded lines completely. */
1528 	    if (!VIsual_active)
1529 	    {
1530 		if (hasFolding(oap->start.lnum, &oap->start.lnum, NULL))
1531 		    oap->start.col = 0;
1532 		if (hasFolding(curwin->w_cursor.lnum, NULL,
1533 						      &curwin->w_cursor.lnum))
1534 		    curwin->w_cursor.col = (colnr_T)STRLEN(ml_get_curline());
1535 	    }
1536 #endif
1537 	    oap->end = curwin->w_cursor;
1538 	    curwin->w_cursor = oap->start;
1539 
1540 	    /* w_virtcol may have been updated; if the cursor goes back to its
1541 	     * previous position w_virtcol becomes invalid and isn't updated
1542 	     * automatically. */
1543 	    curwin->w_valid &= ~VALID_VIRTCOL;
1544 	}
1545 	else
1546 	{
1547 #ifdef FEAT_FOLDING
1548 	    /* Include folded lines completely. */
1549 	    if (!VIsual_active && oap->motion_type == MLINE)
1550 	    {
1551 		if (hasFolding(curwin->w_cursor.lnum, &curwin->w_cursor.lnum,
1552 									NULL))
1553 		    curwin->w_cursor.col = 0;
1554 		if (hasFolding(oap->start.lnum, NULL, &oap->start.lnum))
1555 		    oap->start.col = (colnr_T)STRLEN(ml_get(oap->start.lnum));
1556 	    }
1557 #endif
1558 	    oap->end = oap->start;
1559 	    oap->start = curwin->w_cursor;
1560 	}
1561 
1562 	/* Just in case lines were deleted that make the position invalid. */
1563 	check_pos(curwin->w_buffer, &oap->end);
1564 	oap->line_count = oap->end.lnum - oap->start.lnum + 1;
1565 
1566 	/* Set "virtual_op" before resetting VIsual_active. */
1567 	virtual_op = virtual_active();
1568 
1569 	if (VIsual_active || redo_VIsual_busy)
1570 	{
1571 	    get_op_vcol(oap, redo_VIsual_vcol, TRUE);
1572 
1573 	    if (!redo_VIsual_busy && !gui_yank)
1574 	    {
1575 		/*
1576 		 * Prepare to reselect and redo Visual: this is based on the
1577 		 * size of the Visual text
1578 		 */
1579 		resel_VIsual_mode = VIsual_mode;
1580 		if (curwin->w_curswant == MAXCOL)
1581 		    resel_VIsual_vcol = MAXCOL;
1582 		else
1583 		{
1584 		    if (VIsual_mode != Ctrl_V)
1585 			getvvcol(curwin, &(oap->end),
1586 						  NULL, NULL, &oap->end_vcol);
1587 		    if (VIsual_mode == Ctrl_V || oap->line_count <= 1)
1588 		    {
1589 			if (VIsual_mode != Ctrl_V)
1590 			    getvvcol(curwin, &(oap->start),
1591 						&oap->start_vcol, NULL, NULL);
1592 			resel_VIsual_vcol = oap->end_vcol - oap->start_vcol + 1;
1593 		    }
1594 		    else
1595 			resel_VIsual_vcol = oap->end_vcol;
1596 		}
1597 		resel_VIsual_line_count = oap->line_count;
1598 	    }
1599 
1600 	    /* can't redo yank (unless 'y' is in 'cpoptions') and ":" */
1601 	    if ((redo_yank || oap->op_type != OP_YANK)
1602 		    && oap->op_type != OP_COLON
1603 #ifdef FEAT_FOLDING
1604 		    && oap->op_type != OP_FOLD
1605 		    && oap->op_type != OP_FOLDOPEN
1606 		    && oap->op_type != OP_FOLDOPENREC
1607 		    && oap->op_type != OP_FOLDCLOSE
1608 		    && oap->op_type != OP_FOLDCLOSEREC
1609 		    && oap->op_type != OP_FOLDDEL
1610 		    && oap->op_type != OP_FOLDDELREC
1611 #endif
1612 		    && oap->motion_force == NUL
1613 		    )
1614 	    {
1615 		/* Prepare for redoing.  Only use the nchar field for "r",
1616 		 * otherwise it might be the second char of the operator. */
1617 		if (cap->cmdchar == 'g' && (cap->nchar == 'n'
1618 							|| cap->nchar == 'N'))
1619 		    prep_redo(oap->regname, cap->count0,
1620 			    get_op_char(oap->op_type), get_extra_op_char(oap->op_type),
1621 			    oap->motion_force, cap->cmdchar, cap->nchar);
1622 		else if (cap->cmdchar != ':')
1623 		{
1624 		    int nchar = oap->op_type == OP_REPLACE ? cap->nchar : NUL;
1625 
1626 		    /* reverse what nv_replace() did */
1627 		    if (nchar == REPLACE_CR_NCHAR)
1628 			nchar = CAR;
1629 		    else if (nchar == REPLACE_NL_NCHAR)
1630 			nchar = NL;
1631 		    prep_redo(oap->regname, 0L, NUL, 'v',
1632 					get_op_char(oap->op_type),
1633 					get_extra_op_char(oap->op_type),
1634 					nchar);
1635 		}
1636 		if (!redo_VIsual_busy)
1637 		{
1638 		    redo_VIsual_mode = resel_VIsual_mode;
1639 		    redo_VIsual_vcol = resel_VIsual_vcol;
1640 		    redo_VIsual_line_count = resel_VIsual_line_count;
1641 		    redo_VIsual_count = cap->count0;
1642 		    redo_VIsual_arg = cap->arg;
1643 		}
1644 	    }
1645 
1646 	    /*
1647 	     * oap->inclusive defaults to TRUE.
1648 	     * If oap->end is on a NUL (empty line) oap->inclusive becomes
1649 	     * FALSE.  This makes "d}P" and "v}dP" work the same.
1650 	     */
1651 	    if (oap->motion_force == NUL || oap->motion_type == MLINE)
1652 		oap->inclusive = TRUE;
1653 	    if (VIsual_mode == 'V')
1654 		oap->motion_type = MLINE;
1655 	    else
1656 	    {
1657 		oap->motion_type = MCHAR;
1658 		if (VIsual_mode != Ctrl_V && *ml_get_pos(&(oap->end)) == NUL
1659 			&& (include_line_break || !virtual_op))
1660 		{
1661 		    oap->inclusive = FALSE;
1662 		    /* Try to include the newline, unless it's an operator
1663 		     * that works on lines only. */
1664 		    if (*p_sel != 'o'
1665 			    && !op_on_lines(oap->op_type)
1666 			    && oap->end.lnum < curbuf->b_ml.ml_line_count)
1667 		    {
1668 			++oap->end.lnum;
1669 			oap->end.col = 0;
1670 			oap->end.coladd = 0;
1671 			++oap->line_count;
1672 		    }
1673 		}
1674 	    }
1675 
1676 	    redo_VIsual_busy = FALSE;
1677 
1678 	    /*
1679 	     * Switch Visual off now, so screen updating does
1680 	     * not show inverted text when the screen is redrawn.
1681 	     * With OP_YANK and sometimes with OP_COLON and OP_FILTER there is
1682 	     * no screen redraw, so it is done here to remove the inverted
1683 	     * part.
1684 	     */
1685 	    if (!gui_yank)
1686 	    {
1687 		VIsual_active = FALSE;
1688 #ifdef FEAT_MOUSE
1689 		setmouse();
1690 		mouse_dragging = 0;
1691 #endif
1692 		may_clear_cmdline();
1693 		if ((oap->op_type == OP_YANK
1694 			    || oap->op_type == OP_COLON
1695 			    || oap->op_type == OP_FUNCTION
1696 			    || oap->op_type == OP_FILTER)
1697 			&& oap->motion_force == NUL)
1698 		{
1699 #ifdef FEAT_LINEBREAK
1700 		    /* make sure redrawing is correct */
1701 		    curwin->w_p_lbr = lbr_saved;
1702 #endif
1703 		    redraw_curbuf_later(INVERTED);
1704 		}
1705 	    }
1706 	}
1707 
1708 	/* Include the trailing byte of a multi-byte char. */
1709 	if (has_mbyte && oap->inclusive)
1710 	{
1711 	    int		l;
1712 
1713 	    l = (*mb_ptr2len)(ml_get_pos(&oap->end));
1714 	    if (l > 1)
1715 		oap->end.col += l - 1;
1716 	}
1717 	curwin->w_set_curswant = TRUE;
1718 
1719 	/*
1720 	 * oap->empty is set when start and end are the same.  The inclusive
1721 	 * flag affects this too, unless yanking and the end is on a NUL.
1722 	 */
1723 	oap->empty = (oap->motion_type == MCHAR
1724 		    && (!oap->inclusive
1725 			|| (oap->op_type == OP_YANK
1726 			    && gchar_pos(&oap->end) == NUL))
1727 		    && EQUAL_POS(oap->start, oap->end)
1728 		    && !(virtual_op && oap->start.coladd != oap->end.coladd));
1729 	/*
1730 	 * For delete, change and yank, it's an error to operate on an
1731 	 * empty region, when 'E' included in 'cpoptions' (Vi compatible).
1732 	 */
1733 	empty_region_error = (oap->empty
1734 				&& vim_strchr(p_cpo, CPO_EMPTYREGION) != NULL);
1735 
1736 	/* Force a redraw when operating on an empty Visual region, when
1737 	 * 'modifiable is off or creating a fold. */
1738 	if (oap->is_VIsual && (oap->empty || !curbuf->b_p_ma
1739 #ifdef FEAT_FOLDING
1740 		    || oap->op_type == OP_FOLD
1741 #endif
1742 		    ))
1743 	{
1744 #ifdef FEAT_LINEBREAK
1745 	    curwin->w_p_lbr = lbr_saved;
1746 #endif
1747 	    redraw_curbuf_later(INVERTED);
1748 	}
1749 
1750 	/*
1751 	 * If the end of an operator is in column one while oap->motion_type
1752 	 * is MCHAR and oap->inclusive is FALSE, we put op_end after the last
1753 	 * character in the previous line. If op_start is on or before the
1754 	 * first non-blank in the line, the operator becomes linewise
1755 	 * (strange, but that's the way vi does it).
1756 	 */
1757 	if (	   oap->motion_type == MCHAR
1758 		&& oap->inclusive == FALSE
1759 		&& !(cap->retval & CA_NO_ADJ_OP_END)
1760 		&& oap->end.col == 0
1761 		&& (!oap->is_VIsual || *p_sel == 'o')
1762 		&& !oap->block_mode
1763 		&& oap->line_count > 1)
1764 	{
1765 	    oap->end_adjusted = TRUE;	    /* remember that we did this */
1766 	    --oap->line_count;
1767 	    --oap->end.lnum;
1768 	    if (inindent(0))
1769 		oap->motion_type = MLINE;
1770 	    else
1771 	    {
1772 		oap->end.col = (colnr_T)STRLEN(ml_get(oap->end.lnum));
1773 		if (oap->end.col)
1774 		{
1775 		    --oap->end.col;
1776 		    oap->inclusive = TRUE;
1777 		}
1778 	    }
1779 	}
1780 	else
1781 	    oap->end_adjusted = FALSE;
1782 
1783 	switch (oap->op_type)
1784 	{
1785 	case OP_LSHIFT:
1786 	case OP_RSHIFT:
1787 	    op_shift(oap, TRUE, oap->is_VIsual ? (int)cap->count1 : 1);
1788 	    auto_format(FALSE, TRUE);
1789 	    break;
1790 
1791 	case OP_JOIN_NS:
1792 	case OP_JOIN:
1793 	    if (oap->line_count < 2)
1794 		oap->line_count = 2;
1795 	    if (curwin->w_cursor.lnum + oap->line_count - 1 >
1796 						   curbuf->b_ml.ml_line_count)
1797 		beep_flush();
1798 	    else
1799 	    {
1800 		(void)do_join(oap->line_count, oap->op_type == OP_JOIN,
1801 							    TRUE, TRUE, TRUE);
1802 		auto_format(FALSE, TRUE);
1803 	    }
1804 	    break;
1805 
1806 	case OP_DELETE:
1807 	    VIsual_reselect = FALSE;	    /* don't reselect now */
1808 	    if (empty_region_error)
1809 	    {
1810 		vim_beep(BO_OPER);
1811 		CancelRedo();
1812 	    }
1813 	    else
1814 	    {
1815 		(void)op_delete(oap);
1816 		if (oap->motion_type == MLINE && has_format_option(FO_AUTO))
1817 		    u_save_cursor();	    /* cursor line wasn't saved yet */
1818 		auto_format(FALSE, TRUE);
1819 	    }
1820 	    break;
1821 
1822 	case OP_YANK:
1823 	    if (empty_region_error)
1824 	    {
1825 		if (!gui_yank)
1826 		{
1827 		    vim_beep(BO_OPER);
1828 		    CancelRedo();
1829 		}
1830 	    }
1831 	    else
1832 	    {
1833 #ifdef FEAT_LINEBREAK
1834 		curwin->w_p_lbr = lbr_saved;
1835 #endif
1836 		(void)op_yank(oap, FALSE, !gui_yank);
1837 	    }
1838 	    check_cursor_col();
1839 	    break;
1840 
1841 	case OP_CHANGE:
1842 	    VIsual_reselect = FALSE;	    /* don't reselect now */
1843 	    if (empty_region_error)
1844 	    {
1845 		vim_beep(BO_OPER);
1846 		CancelRedo();
1847 	    }
1848 	    else
1849 	    {
1850 		/* This is a new edit command, not a restart.  Need to
1851 		 * remember it to make 'insertmode' work with mappings for
1852 		 * Visual mode.  But do this only once and not when typed and
1853 		 * 'insertmode' isn't set. */
1854 		if (p_im || !KeyTyped)
1855 		    restart_edit_save = restart_edit;
1856 		else
1857 		    restart_edit_save = 0;
1858 		restart_edit = 0;
1859 #ifdef FEAT_LINEBREAK
1860 		/* Restore linebreak, so that when the user edits it looks as
1861 		 * before. */
1862 		if (curwin->w_p_lbr != lbr_saved)
1863 		{
1864 		    curwin->w_p_lbr = lbr_saved;
1865 		    get_op_vcol(oap, redo_VIsual_mode, FALSE);
1866 		}
1867 #endif
1868 		/* Reset finish_op now, don't want it set inside edit(). */
1869 		finish_op = FALSE;
1870 		if (op_change(oap))	/* will call edit() */
1871 		    cap->retval |= CA_COMMAND_BUSY;
1872 		if (restart_edit == 0)
1873 		    restart_edit = restart_edit_save;
1874 	    }
1875 	    break;
1876 
1877 	case OP_FILTER:
1878 	    if (vim_strchr(p_cpo, CPO_FILTER) != NULL)
1879 		AppendToRedobuff((char_u *)"!\r");  /* use any last used !cmd */
1880 	    else
1881 		bangredo = TRUE;    /* do_bang() will put cmd in redo buffer */
1882 	    /* FALLTHROUGH */
1883 
1884 	case OP_INDENT:
1885 	case OP_COLON:
1886 
1887 #if defined(FEAT_LISP) || defined(FEAT_CINDENT)
1888 	    /*
1889 	     * If 'equalprg' is empty, do the indenting internally.
1890 	     */
1891 	    if (oap->op_type == OP_INDENT && *get_equalprg() == NUL)
1892 	    {
1893 # ifdef FEAT_LISP
1894 		if (curbuf->b_p_lisp)
1895 		{
1896 		    op_reindent(oap, get_lisp_indent);
1897 		    break;
1898 		}
1899 # endif
1900 # ifdef FEAT_CINDENT
1901 		op_reindent(oap,
1902 #  ifdef FEAT_EVAL
1903 			*curbuf->b_p_inde != NUL ? get_expr_indent :
1904 #  endif
1905 			    get_c_indent);
1906 		break;
1907 # endif
1908 	    }
1909 #endif
1910 
1911 	    op_colon(oap);
1912 	    break;
1913 
1914 	case OP_TILDE:
1915 	case OP_UPPER:
1916 	case OP_LOWER:
1917 	case OP_ROT13:
1918 	    if (empty_region_error)
1919 	    {
1920 		vim_beep(BO_OPER);
1921 		CancelRedo();
1922 	    }
1923 	    else
1924 		op_tilde(oap);
1925 	    check_cursor_col();
1926 	    break;
1927 
1928 	case OP_FORMAT:
1929 #if defined(FEAT_EVAL)
1930 	    if (*curbuf->b_p_fex != NUL)
1931 		op_formatexpr(oap);	/* use expression */
1932 	    else
1933 #endif
1934 		if (*p_fp != NUL || *curbuf->b_p_fp != NUL)
1935 		op_colon(oap);		/* use external command */
1936 	    else
1937 		op_format(oap, FALSE);	/* use internal function */
1938 	    break;
1939 
1940 	case OP_FORMAT2:
1941 	    op_format(oap, TRUE);	/* use internal function */
1942 	    break;
1943 
1944 	case OP_FUNCTION:
1945 #ifdef FEAT_LINEBREAK
1946 	    /* Restore linebreak, so that when the user edits it looks as
1947 	     * before. */
1948 	    curwin->w_p_lbr = lbr_saved;
1949 #endif
1950 	    op_function(oap);		/* call 'operatorfunc' */
1951 	    break;
1952 
1953 	case OP_INSERT:
1954 	case OP_APPEND:
1955 	    VIsual_reselect = FALSE;	/* don't reselect now */
1956 	    if (empty_region_error)
1957 	    {
1958 		vim_beep(BO_OPER);
1959 		CancelRedo();
1960 	    }
1961 	    else
1962 	    {
1963 		/* This is a new edit command, not a restart.  Need to
1964 		 * remember it to make 'insertmode' work with mappings for
1965 		 * Visual mode.  But do this only once. */
1966 		restart_edit_save = restart_edit;
1967 		restart_edit = 0;
1968 #ifdef FEAT_LINEBREAK
1969 		/* Restore linebreak, so that when the user edits it looks as
1970 		 * before. */
1971 		if (curwin->w_p_lbr != lbr_saved)
1972 		{
1973 		    curwin->w_p_lbr = lbr_saved;
1974 		    get_op_vcol(oap, redo_VIsual_mode, FALSE);
1975 		}
1976 #endif
1977 		op_insert(oap, cap->count1);
1978 #ifdef FEAT_LINEBREAK
1979 		/* Reset linebreak, so that formatting works correctly. */
1980 		curwin->w_p_lbr = FALSE;
1981 #endif
1982 
1983 		/* TODO: when inserting in several lines, should format all
1984 		 * the lines. */
1985 		auto_format(FALSE, TRUE);
1986 
1987 		if (restart_edit == 0)
1988 		    restart_edit = restart_edit_save;
1989 		else
1990 		    cap->retval |= CA_COMMAND_BUSY;
1991 	    }
1992 	    break;
1993 
1994 	case OP_REPLACE:
1995 	    VIsual_reselect = FALSE;	/* don't reselect now */
1996 	    if (empty_region_error)
1997 	    {
1998 		vim_beep(BO_OPER);
1999 		CancelRedo();
2000 	    }
2001 	    else
2002 	    {
2003 #ifdef FEAT_LINEBREAK
2004 		/* Restore linebreak, so that when the user edits it looks as
2005 		 * before. */
2006 		if (curwin->w_p_lbr != lbr_saved)
2007 		{
2008 		    curwin->w_p_lbr = lbr_saved;
2009 		    get_op_vcol(oap, redo_VIsual_mode, FALSE);
2010 		}
2011 #endif
2012 		op_replace(oap, cap->nchar);
2013 	    }
2014 	    break;
2015 
2016 #ifdef FEAT_FOLDING
2017 	case OP_FOLD:
2018 	    VIsual_reselect = FALSE;	/* don't reselect now */
2019 	    foldCreate(oap->start.lnum, oap->end.lnum);
2020 	    break;
2021 
2022 	case OP_FOLDOPEN:
2023 	case OP_FOLDOPENREC:
2024 	case OP_FOLDCLOSE:
2025 	case OP_FOLDCLOSEREC:
2026 	    VIsual_reselect = FALSE;	/* don't reselect now */
2027 	    opFoldRange(oap->start.lnum, oap->end.lnum,
2028 		    oap->op_type == OP_FOLDOPEN
2029 					    || oap->op_type == OP_FOLDOPENREC,
2030 		    oap->op_type == OP_FOLDOPENREC
2031 					  || oap->op_type == OP_FOLDCLOSEREC,
2032 					  oap->is_VIsual);
2033 	    break;
2034 
2035 	case OP_FOLDDEL:
2036 	case OP_FOLDDELREC:
2037 	    VIsual_reselect = FALSE;	/* don't reselect now */
2038 	    deleteFold(oap->start.lnum, oap->end.lnum,
2039 			       oap->op_type == OP_FOLDDELREC, oap->is_VIsual);
2040 	    break;
2041 #endif
2042 	case OP_NR_ADD:
2043 	case OP_NR_SUB:
2044 	    if (empty_region_error)
2045 	    {
2046 		vim_beep(BO_OPER);
2047 		CancelRedo();
2048 	    }
2049 	    else
2050 	    {
2051 		VIsual_active = TRUE;
2052 #ifdef FEAT_LINEBREAK
2053 		curwin->w_p_lbr = lbr_saved;
2054 #endif
2055 		op_addsub(oap, cap->count1, redo_VIsual_arg);
2056 		VIsual_active = FALSE;
2057 	    }
2058 	    check_cursor_col();
2059 	    break;
2060 	default:
2061 	    clearopbeep(oap);
2062 	}
2063 	virtual_op = MAYBE;
2064 	if (!gui_yank)
2065 	{
2066 	    /*
2067 	     * if 'sol' not set, go back to old column for some commands
2068 	     */
2069 	    if (!p_sol && oap->motion_type == MLINE && !oap->end_adjusted
2070 		    && (oap->op_type == OP_LSHIFT || oap->op_type == OP_RSHIFT
2071 						|| oap->op_type == OP_DELETE))
2072 	    {
2073 #ifdef FEAT_LINEBREAK
2074 		curwin->w_p_lbr = FALSE;
2075 #endif
2076 		coladvance(curwin->w_curswant = old_col);
2077 	    }
2078 	}
2079 	else
2080 	{
2081 	    curwin->w_cursor = old_cursor;
2082 	}
2083 	oap->block_mode = FALSE;
2084 	clearop(oap);
2085 	motion_force = NUL;
2086     }
2087 #ifdef FEAT_LINEBREAK
2088     curwin->w_p_lbr = lbr_saved;
2089 #endif
2090 }
2091 
2092 /*
2093  * Handle indent and format operators and visual mode ":".
2094  */
2095     static void
2096 op_colon(oparg_T *oap)
2097 {
2098     stuffcharReadbuff(':');
2099     if (oap->is_VIsual)
2100 	stuffReadbuff((char_u *)"'<,'>");
2101     else
2102     {
2103 	/*
2104 	 * Make the range look nice, so it can be repeated.
2105 	 */
2106 	if (oap->start.lnum == curwin->w_cursor.lnum)
2107 	    stuffcharReadbuff('.');
2108 	else
2109 	    stuffnumReadbuff((long)oap->start.lnum);
2110 	if (oap->end.lnum != oap->start.lnum)
2111 	{
2112 	    stuffcharReadbuff(',');
2113 	    if (oap->end.lnum == curwin->w_cursor.lnum)
2114 		stuffcharReadbuff('.');
2115 	    else if (oap->end.lnum == curbuf->b_ml.ml_line_count)
2116 		stuffcharReadbuff('$');
2117 	    else if (oap->start.lnum == curwin->w_cursor.lnum)
2118 	    {
2119 		stuffReadbuff((char_u *)".+");
2120 		stuffnumReadbuff((long)oap->line_count - 1);
2121 	    }
2122 	    else
2123 		stuffnumReadbuff((long)oap->end.lnum);
2124 	}
2125     }
2126     if (oap->op_type != OP_COLON)
2127 	stuffReadbuff((char_u *)"!");
2128     if (oap->op_type == OP_INDENT)
2129     {
2130 #ifndef FEAT_CINDENT
2131 	if (*get_equalprg() == NUL)
2132 	    stuffReadbuff((char_u *)"indent");
2133 	else
2134 #endif
2135 	    stuffReadbuff(get_equalprg());
2136 	stuffReadbuff((char_u *)"\n");
2137     }
2138     else if (oap->op_type == OP_FORMAT)
2139     {
2140 	if (*curbuf->b_p_fp != NUL)
2141 	    stuffReadbuff(curbuf->b_p_fp);
2142 	else if (*p_fp != NUL)
2143 	    stuffReadbuff(p_fp);
2144 	else
2145 	    stuffReadbuff((char_u *)"fmt");
2146 	stuffReadbuff((char_u *)"\n']");
2147     }
2148 
2149     /*
2150      * do_cmdline() does the rest
2151      */
2152 }
2153 
2154 /*
2155  * Handle the "g@" operator: call 'operatorfunc'.
2156  */
2157     static void
2158 op_function(oparg_T *oap UNUSED)
2159 {
2160 #ifdef FEAT_EVAL
2161     typval_T	argv[2];
2162     int		save_virtual_op = virtual_op;
2163 
2164     if (*p_opfunc == NUL)
2165 	emsg(_("E774: 'operatorfunc' is empty"));
2166     else
2167     {
2168 	/* Set '[ and '] marks to text to be operated on. */
2169 	curbuf->b_op_start = oap->start;
2170 	curbuf->b_op_end = oap->end;
2171 	if (oap->motion_type != MLINE && !oap->inclusive)
2172 	    /* Exclude the end position. */
2173 	    decl(&curbuf->b_op_end);
2174 
2175 	argv[0].v_type = VAR_STRING;
2176 	if (oap->block_mode)
2177 	    argv[0].vval.v_string = (char_u *)"block";
2178 	else if (oap->motion_type == MLINE)
2179 	    argv[0].vval.v_string = (char_u *)"line";
2180 	else
2181 	    argv[0].vval.v_string = (char_u *)"char";
2182 	argv[1].v_type = VAR_UNKNOWN;
2183 
2184 	/* Reset virtual_op so that 'virtualedit' can be changed in the
2185 	 * function. */
2186 	virtual_op = MAYBE;
2187 
2188 	(void)call_func_retnr(p_opfunc, 1, argv);
2189 
2190 	virtual_op = save_virtual_op;
2191     }
2192 #else
2193     emsg(_("E775: Eval feature not available"));
2194 #endif
2195 }
2196 
2197 #if defined(FEAT_MOUSE) || defined(PROTO)
2198 /*
2199  * Do the appropriate action for the current mouse click in the current mode.
2200  * Not used for Command-line mode.
2201  *
2202  * Normal and Visual Mode:
2203  * event	 modi-	position      visual	   change   action
2204  *		 fier	cursor			   window
2205  * left press	  -	yes	    end		    yes
2206  * left press	  C	yes	    end		    yes	    "^]" (2)
2207  * left press	  S	yes	end (popup: extend) yes	    "*" (2)
2208  * left drag	  -	yes	start if moved	    no
2209  * left relse	  -	yes	start if moved	    no
2210  * middle press	  -	yes	 if not active	    no	    put register
2211  * middle press	  -	yes	 if active	    no	    yank and put
2212  * right press	  -	yes	start or extend	    yes
2213  * right press	  S	yes	no change	    yes	    "#" (2)
2214  * right drag	  -	yes	extend		    no
2215  * right relse	  -	yes	extend		    no
2216  *
2217  * Insert or Replace Mode:
2218  * event	 modi-	position      visual	   change   action
2219  *		 fier	cursor			   window
2220  * left press	  -	yes	(cannot be active)  yes
2221  * left press	  C	yes	(cannot be active)  yes	    "CTRL-O^]" (2)
2222  * left press	  S	yes	(cannot be active)  yes	    "CTRL-O*" (2)
2223  * left drag	  -	yes	start or extend (1) no	    CTRL-O (1)
2224  * left relse	  -	yes	start or extend (1) no	    CTRL-O (1)
2225  * middle press	  -	no	(cannot be active)  no	    put register
2226  * right press	  -	yes	start or extend	    yes	    CTRL-O
2227  * right press	  S	yes	(cannot be active)  yes	    "CTRL-O#" (2)
2228  *
2229  * (1) only if mouse pointer moved since press
2230  * (2) only if click is in same buffer
2231  *
2232  * Return TRUE if start_arrow() should be called for edit mode.
2233  */
2234     int
2235 do_mouse(
2236     oparg_T	*oap,		/* operator argument, can be NULL */
2237     int		c,		/* K_LEFTMOUSE, etc */
2238     int		dir,		/* Direction to 'put' if necessary */
2239     long	count,
2240     int		fixindent)	/* PUT_FIXINDENT if fixing indent necessary */
2241 {
2242     static int	do_always = FALSE;	/* ignore 'mouse' setting next time */
2243     static int	got_click = FALSE;	/* got a click some time back */
2244 
2245     int		which_button;	/* MOUSE_LEFT, _MIDDLE or _RIGHT */
2246     int		is_click;	/* If FALSE it's a drag or release event */
2247     int		is_drag;	/* If TRUE it's a drag event */
2248     int		jump_flags = 0;	/* flags for jump_to_mouse() */
2249     pos_T	start_visual;
2250     int		moved;		/* Has cursor moved? */
2251     int		in_status_line;	/* mouse in status line */
2252     static int	in_tab_line = FALSE; /* mouse clicked in tab line */
2253     int		in_sep_line;	/* mouse in vertical separator line */
2254     int		c1, c2;
2255 #if defined(FEAT_FOLDING)
2256     pos_T	save_cursor;
2257 #endif
2258     win_T	*old_curwin = curwin;
2259     static pos_T orig_cursor;
2260     colnr_T	leftcol, rightcol;
2261     pos_T	end_visual;
2262     int		diff;
2263     int		old_active = VIsual_active;
2264     int		old_mode = VIsual_mode;
2265     int		regname;
2266 
2267 #if defined(FEAT_FOLDING)
2268     save_cursor = curwin->w_cursor;
2269 #endif
2270 
2271     /*
2272      * When GUI is active, always recognize mouse events, otherwise:
2273      * - Ignore mouse event in normal mode if 'mouse' doesn't include 'n'.
2274      * - Ignore mouse event in visual mode if 'mouse' doesn't include 'v'.
2275      * - For command line and insert mode 'mouse' is checked before calling
2276      *	 do_mouse().
2277      */
2278     if (do_always)
2279 	do_always = FALSE;
2280     else
2281 #ifdef FEAT_GUI
2282 	if (!gui.in_use)
2283 #endif
2284 	{
2285 	    if (VIsual_active)
2286 	    {
2287 		if (!mouse_has(MOUSE_VISUAL))
2288 		    return FALSE;
2289 	    }
2290 	    else if (State == NORMAL && !mouse_has(MOUSE_NORMAL))
2291 		return FALSE;
2292 	}
2293 
2294     for (;;)
2295     {
2296 	which_button = get_mouse_button(KEY2TERMCAP1(c), &is_click, &is_drag);
2297 	if (is_drag)
2298 	{
2299 	    /* If the next character is the same mouse event then use that
2300 	     * one. Speeds up dragging the status line. */
2301 	    if (vpeekc() != NUL)
2302 	    {
2303 		int nc;
2304 		int save_mouse_row = mouse_row;
2305 		int save_mouse_col = mouse_col;
2306 
2307 		/* Need to get the character, peeking doesn't get the actual
2308 		 * one. */
2309 		nc = safe_vgetc();
2310 		if (c == nc)
2311 		    continue;
2312 		vungetc(nc);
2313 		mouse_row = save_mouse_row;
2314 		mouse_col = save_mouse_col;
2315 	    }
2316 	}
2317 	break;
2318     }
2319 
2320     if (c == K_MOUSEMOVE)
2321     {
2322 	// Mouse moved without a button pressed.
2323 #ifdef FEAT_BEVAL_TERM
2324 	ui_may_remove_balloon();
2325 	if (p_bevalterm)
2326 	{
2327 	    profile_setlimit(p_bdlay, &bevalexpr_due);
2328 	    bevalexpr_due_set = TRUE;
2329 	}
2330 #endif
2331 	return FALSE;
2332     }
2333 
2334 #ifdef FEAT_MOUSESHAPE
2335     /* May have stopped dragging the status or separator line.  The pointer is
2336      * most likely still on the status or separator line. */
2337     if (!is_drag && drag_status_line)
2338     {
2339 	drag_status_line = FALSE;
2340 	update_mouseshape(SHAPE_IDX_STATUS);
2341     }
2342     if (!is_drag && drag_sep_line)
2343     {
2344 	drag_sep_line = FALSE;
2345 	update_mouseshape(SHAPE_IDX_VSEP);
2346     }
2347 #endif
2348 
2349     /*
2350      * Ignore drag and release events if we didn't get a click.
2351      */
2352     if (is_click)
2353 	got_click = TRUE;
2354     else
2355     {
2356 	if (!got_click)			/* didn't get click, ignore */
2357 	    return FALSE;
2358 	if (!is_drag)			/* release, reset got_click */
2359 	{
2360 	    got_click = FALSE;
2361 	    if (in_tab_line)
2362 	    {
2363 		in_tab_line = FALSE;
2364 		return FALSE;
2365 	    }
2366 	}
2367     }
2368 
2369     /*
2370      * CTRL right mouse button does CTRL-T
2371      */
2372     if (is_click && (mod_mask & MOD_MASK_CTRL) && which_button == MOUSE_RIGHT)
2373     {
2374 	if (State & INSERT)
2375 	    stuffcharReadbuff(Ctrl_O);
2376 	if (count > 1)
2377 	    stuffnumReadbuff(count);
2378 	stuffcharReadbuff(Ctrl_T);
2379 	got_click = FALSE;		/* ignore drag&release now */
2380 	return FALSE;
2381     }
2382 
2383     /*
2384      * CTRL only works with left mouse button
2385      */
2386     if ((mod_mask & MOD_MASK_CTRL) && which_button != MOUSE_LEFT)
2387 	return FALSE;
2388 
2389     /*
2390      * When a modifier is down, ignore drag and release events, as well as
2391      * multiple clicks and the middle mouse button.
2392      * Accept shift-leftmouse drags when 'mousemodel' is "popup.*".
2393      */
2394     if ((mod_mask & (MOD_MASK_SHIFT | MOD_MASK_CTRL | MOD_MASK_ALT
2395 							     | MOD_MASK_META))
2396 	    && (!is_click
2397 		|| (mod_mask & MOD_MASK_MULTI_CLICK)
2398 		|| which_button == MOUSE_MIDDLE)
2399 	    && !((mod_mask & (MOD_MASK_SHIFT|MOD_MASK_ALT))
2400 		&& mouse_model_popup()
2401 		&& which_button == MOUSE_LEFT)
2402 	    && !((mod_mask & MOD_MASK_ALT)
2403 		&& !mouse_model_popup()
2404 		&& which_button == MOUSE_RIGHT)
2405 	    )
2406 	return FALSE;
2407 
2408     /*
2409      * If the button press was used as the movement command for an operator
2410      * (eg "d<MOUSE>"), or it is the middle button that is held down, ignore
2411      * drag/release events.
2412      */
2413     if (!is_click && which_button == MOUSE_MIDDLE)
2414 	return FALSE;
2415 
2416     if (oap != NULL)
2417 	regname = oap->regname;
2418     else
2419 	regname = 0;
2420 
2421     /*
2422      * Middle mouse button does a 'put' of the selected text
2423      */
2424     if (which_button == MOUSE_MIDDLE)
2425     {
2426 	if (State == NORMAL)
2427 	{
2428 	    /*
2429 	     * If an operator was pending, we don't know what the user wanted
2430 	     * to do. Go back to normal mode: Clear the operator and beep().
2431 	     */
2432 	    if (oap != NULL && oap->op_type != OP_NOP)
2433 	    {
2434 		clearopbeep(oap);
2435 		return FALSE;
2436 	    }
2437 
2438 	    /*
2439 	     * If visual was active, yank the highlighted text and put it
2440 	     * before the mouse pointer position.
2441 	     * In Select mode replace the highlighted text with the clipboard.
2442 	     */
2443 	    if (VIsual_active)
2444 	    {
2445 		if (VIsual_select)
2446 		{
2447 		    stuffcharReadbuff(Ctrl_G);
2448 		    stuffReadbuff((char_u *)"\"+p");
2449 		}
2450 		else
2451 		{
2452 		    stuffcharReadbuff('y');
2453 		    stuffcharReadbuff(K_MIDDLEMOUSE);
2454 		}
2455 		do_always = TRUE;	/* ignore 'mouse' setting next time */
2456 		return FALSE;
2457 	    }
2458 	    /*
2459 	     * The rest is below jump_to_mouse()
2460 	     */
2461 	}
2462 
2463 	else if ((State & INSERT) == 0)
2464 	    return FALSE;
2465 
2466 	/*
2467 	 * Middle click in insert mode doesn't move the mouse, just insert the
2468 	 * contents of a register.  '.' register is special, can't insert that
2469 	 * with do_put().
2470 	 * Also paste at the cursor if the current mode isn't in 'mouse' (only
2471 	 * happens for the GUI).
2472 	 */
2473 	if ((State & INSERT) || !mouse_has(MOUSE_NORMAL))
2474 	{
2475 	    if (regname == '.')
2476 		insert_reg(regname, TRUE);
2477 	    else
2478 	    {
2479 #ifdef FEAT_CLIPBOARD
2480 		if (clip_star.available && regname == 0)
2481 		    regname = '*';
2482 #endif
2483 		if ((State & REPLACE_FLAG) && !yank_register_mline(regname))
2484 		    insert_reg(regname, TRUE);
2485 		else
2486 		{
2487 		    do_put(regname, BACKWARD, 1L, fixindent | PUT_CURSEND);
2488 
2489 		    /* Repeat it with CTRL-R CTRL-O r or CTRL-R CTRL-P r */
2490 		    AppendCharToRedobuff(Ctrl_R);
2491 		    AppendCharToRedobuff(fixindent ? Ctrl_P : Ctrl_O);
2492 		    AppendCharToRedobuff(regname == 0 ? '"' : regname);
2493 		}
2494 	    }
2495 	    return FALSE;
2496 	}
2497     }
2498 
2499     /* When dragging or button-up stay in the same window. */
2500     if (!is_click)
2501 	jump_flags |= MOUSE_FOCUS | MOUSE_DID_MOVE;
2502 
2503     start_visual.lnum = 0;
2504 
2505     /* Check for clicking in the tab page line. */
2506     if (mouse_row == 0 && firstwin->w_winrow > 0)
2507     {
2508 	if (is_drag)
2509 	{
2510 	    if (in_tab_line)
2511 	    {
2512 		c1 = TabPageIdxs[mouse_col];
2513 		tabpage_move(c1 <= 0 ? 9999 : c1 < tabpage_index(curtab)
2514 								? c1 - 1 : c1);
2515 	    }
2516 	    return FALSE;
2517 	}
2518 
2519 	/* click in a tab selects that tab page */
2520 	if (is_click
2521 # ifdef FEAT_CMDWIN
2522 		&& cmdwin_type == 0
2523 # endif
2524 		&& mouse_col < Columns)
2525 	{
2526 	    in_tab_line = TRUE;
2527 	    c1 = TabPageIdxs[mouse_col];
2528 	    if (c1 >= 0)
2529 	    {
2530 		if ((mod_mask & MOD_MASK_MULTI_CLICK) == MOD_MASK_2CLICK)
2531 		{
2532 		    /* double click opens new page */
2533 		    end_visual_mode();
2534 		    tabpage_new();
2535 		    tabpage_move(c1 == 0 ? 9999 : c1 - 1);
2536 		}
2537 		else
2538 		{
2539 		    /* Go to specified tab page, or next one if not clicking
2540 		     * on a label. */
2541 		    goto_tabpage(c1);
2542 
2543 		    /* It's like clicking on the status line of a window. */
2544 		    if (curwin != old_curwin)
2545 			end_visual_mode();
2546 		}
2547 	    }
2548 	    else
2549 	    {
2550 		tabpage_T	*tp;
2551 
2552 		/* Close the current or specified tab page. */
2553 		if (c1 == -999)
2554 		    tp = curtab;
2555 		else
2556 		    tp = find_tabpage(-c1);
2557 		if (tp == curtab)
2558 		{
2559 		    if (first_tabpage->tp_next != NULL)
2560 			tabpage_close(FALSE);
2561 		}
2562 		else if (tp != NULL)
2563 		    tabpage_close_other(tp, FALSE);
2564 	    }
2565 	}
2566 	return TRUE;
2567     }
2568     else if (is_drag && in_tab_line)
2569     {
2570 	c1 = TabPageIdxs[mouse_col];
2571 	tabpage_move(c1 <= 0 ? 9999 : c1 - 1);
2572 	return FALSE;
2573     }
2574 
2575     /*
2576      * When 'mousemodel' is "popup" or "popup_setpos", translate mouse events:
2577      * right button up   -> pop-up menu
2578      * shift-left button -> right button
2579      * alt-left button   -> alt-right button
2580      */
2581     if (mouse_model_popup())
2582     {
2583 	if (which_button == MOUSE_RIGHT
2584 			    && !(mod_mask & (MOD_MASK_SHIFT | MOD_MASK_CTRL)))
2585 	{
2586 #if defined(FEAT_GUI_MOTIF) || defined(FEAT_GUI_GTK) \
2587 	    || defined(FEAT_GUI_ATHENA) || defined(FEAT_GUI_MSWIN) \
2588 	    || defined(FEAT_GUI_MAC) || defined(FEAT_GUI_PHOTON) \
2589 	    || defined(FEAT_TERM_POPUP_MENU)
2590 # ifdef FEAT_GUI
2591 	    if (gui.in_use)
2592 	    {
2593 #  if defined(FEAT_GUI_MOTIF) || defined(FEAT_GUI_GTK) \
2594 			  || defined(FEAT_GUI_PHOTON) || defined(FEAT_GUI_MAC)
2595 		if (!is_click)
2596 		    /* Ignore right button release events, only shows the popup
2597 		     * menu on the button down event. */
2598 		    return FALSE;
2599 #  endif
2600 #  if defined(FEAT_GUI_ATHENA) || defined(FEAT_GUI_MSWIN)
2601 		if (is_click || is_drag)
2602 		    /* Ignore right button down and drag mouse events.  Windows
2603 		     * only shows the popup menu on the button up event. */
2604 		    return FALSE;
2605 #  endif
2606 	    }
2607 # endif
2608 # if defined(FEAT_GUI) && defined(FEAT_TERM_POPUP_MENU)
2609 	    else
2610 # endif
2611 # if defined(FEAT_TERM_POPUP_MENU)
2612 	    if (!is_click)
2613 		/* Ignore right button release events, only shows the popup
2614 		 * menu on the button down event. */
2615 		return FALSE;
2616 #endif
2617 
2618 	    jump_flags = 0;
2619 	    if (STRCMP(p_mousem, "popup_setpos") == 0)
2620 	    {
2621 		/* First set the cursor position before showing the popup
2622 		 * menu. */
2623 		if (VIsual_active)
2624 		{
2625 		    pos_T    m_pos;
2626 
2627 		    /*
2628 		     * set MOUSE_MAY_STOP_VIS if we are outside the
2629 		     * selection or the current window (might have false
2630 		     * negative here)
2631 		     */
2632 		    if (mouse_row < curwin->w_winrow
2633 			 || mouse_row
2634 				  > (curwin->w_winrow + curwin->w_height))
2635 			jump_flags = MOUSE_MAY_STOP_VIS;
2636 		    else if (get_fpos_of_mouse(&m_pos) != IN_BUFFER)
2637 			jump_flags = MOUSE_MAY_STOP_VIS;
2638 		    else
2639 		    {
2640 			if ((LT_POS(curwin->w_cursor, VIsual)
2641 				    && (LT_POS(m_pos, curwin->w_cursor)
2642 					|| LT_POS(VIsual, m_pos)))
2643 				|| (LT_POS(VIsual, curwin->w_cursor)
2644 				    && (LT_POS(m_pos, VIsual)
2645 				      || LT_POS(curwin->w_cursor, m_pos))))
2646 			{
2647 			    jump_flags = MOUSE_MAY_STOP_VIS;
2648 			}
2649 			else if (VIsual_mode == Ctrl_V)
2650 			{
2651 			    getvcols(curwin, &curwin->w_cursor, &VIsual,
2652 						     &leftcol, &rightcol);
2653 			    getvcol(curwin, &m_pos, NULL, &m_pos.col, NULL);
2654 			    if (m_pos.col < leftcol || m_pos.col > rightcol)
2655 				jump_flags = MOUSE_MAY_STOP_VIS;
2656 			}
2657 		    }
2658 		}
2659 		else
2660 		    jump_flags = MOUSE_MAY_STOP_VIS;
2661 	    }
2662 	    if (jump_flags)
2663 	    {
2664 		jump_flags = jump_to_mouse(jump_flags, NULL, which_button);
2665 		update_curbuf(VIsual_active ? INVERTED : VALID);
2666 		setcursor();
2667 		out_flush();    /* Update before showing popup menu */
2668 	    }
2669 # ifdef FEAT_MENU
2670 	    show_popupmenu();
2671 	    got_click = FALSE;	/* ignore release events */
2672 # endif
2673 	    return (jump_flags & CURSOR_MOVED) != 0;
2674 #else
2675 	    return FALSE;
2676 #endif
2677 	}
2678 	if (which_button == MOUSE_LEFT
2679 				&& (mod_mask & (MOD_MASK_SHIFT|MOD_MASK_ALT)))
2680 	{
2681 	    which_button = MOUSE_RIGHT;
2682 	    mod_mask &= ~MOD_MASK_SHIFT;
2683 	}
2684     }
2685 
2686     if ((State & (NORMAL | INSERT))
2687 			    && !(mod_mask & (MOD_MASK_SHIFT | MOD_MASK_CTRL)))
2688     {
2689 	if (which_button == MOUSE_LEFT)
2690 	{
2691 	    if (is_click)
2692 	    {
2693 		/* stop Visual mode for a left click in a window, but not when
2694 		 * on a status line */
2695 		if (VIsual_active)
2696 		    jump_flags |= MOUSE_MAY_STOP_VIS;
2697 	    }
2698 	    else if (mouse_has(MOUSE_VISUAL))
2699 		jump_flags |= MOUSE_MAY_VIS;
2700 	}
2701 	else if (which_button == MOUSE_RIGHT)
2702 	{
2703 	    if (is_click && VIsual_active)
2704 	    {
2705 		/*
2706 		 * Remember the start and end of visual before moving the
2707 		 * cursor.
2708 		 */
2709 		if (LT_POS(curwin->w_cursor, VIsual))
2710 		{
2711 		    start_visual = curwin->w_cursor;
2712 		    end_visual = VIsual;
2713 		}
2714 		else
2715 		{
2716 		    start_visual = VIsual;
2717 		    end_visual = curwin->w_cursor;
2718 		}
2719 	    }
2720 	    jump_flags |= MOUSE_FOCUS;
2721 	    if (mouse_has(MOUSE_VISUAL))
2722 		jump_flags |= MOUSE_MAY_VIS;
2723 	}
2724     }
2725 
2726     /*
2727      * If an operator is pending, ignore all drags and releases until the
2728      * next mouse click.
2729      */
2730     if (!is_drag && oap != NULL && oap->op_type != OP_NOP)
2731     {
2732 	got_click = FALSE;
2733 	oap->motion_type = MCHAR;
2734     }
2735 
2736     /* When releasing the button let jump_to_mouse() know. */
2737     if (!is_click && !is_drag)
2738 	jump_flags |= MOUSE_RELEASED;
2739 
2740     /*
2741      * JUMP!
2742      */
2743     jump_flags = jump_to_mouse(jump_flags,
2744 			oap == NULL ? NULL : &(oap->inclusive), which_button);
2745 
2746 #ifdef FEAT_MENU
2747     /* A click in the window toolbar has no side effects. */
2748     if (jump_flags & MOUSE_WINBAR)
2749 	return FALSE;
2750 #endif
2751     moved = (jump_flags & CURSOR_MOVED);
2752     in_status_line = (jump_flags & IN_STATUS_LINE);
2753     in_sep_line = (jump_flags & IN_SEP_LINE);
2754 
2755 #ifdef FEAT_NETBEANS_INTG
2756     if (isNetbeansBuffer(curbuf)
2757 			    && !(jump_flags & (IN_STATUS_LINE | IN_SEP_LINE)))
2758     {
2759 	int key = KEY2TERMCAP1(c);
2760 
2761 	if (key == (int)KE_LEFTRELEASE || key == (int)KE_MIDDLERELEASE
2762 					       || key == (int)KE_RIGHTRELEASE)
2763 	    netbeans_button_release(which_button);
2764     }
2765 #endif
2766 
2767     /* When jumping to another window, clear a pending operator.  That's a bit
2768      * friendlier than beeping and not jumping to that window. */
2769     if (curwin != old_curwin && oap != NULL && oap->op_type != OP_NOP)
2770 	clearop(oap);
2771 
2772 #ifdef FEAT_FOLDING
2773     if (mod_mask == 0
2774 	    && !is_drag
2775 	    && (jump_flags & (MOUSE_FOLD_CLOSE | MOUSE_FOLD_OPEN))
2776 	    && which_button == MOUSE_LEFT)
2777     {
2778 	/* open or close a fold at this line */
2779 	if (jump_flags & MOUSE_FOLD_OPEN)
2780 	    openFold(curwin->w_cursor.lnum, 1L);
2781 	else
2782 	    closeFold(curwin->w_cursor.lnum, 1L);
2783 	/* don't move the cursor if still in the same window */
2784 	if (curwin == old_curwin)
2785 	    curwin->w_cursor = save_cursor;
2786     }
2787 #endif
2788 
2789 #if defined(FEAT_CLIPBOARD) && defined(FEAT_CMDWIN)
2790     if ((jump_flags & IN_OTHER_WIN) && !VIsual_active && clip_star.available)
2791     {
2792 	clip_modeless(which_button, is_click, is_drag);
2793 	return FALSE;
2794     }
2795 #endif
2796 
2797     /* Set global flag that we are extending the Visual area with mouse
2798      * dragging; temporarily minimize 'scrolloff'. */
2799     if (VIsual_active && is_drag && get_scrolloff_value())
2800     {
2801 	/* In the very first line, allow scrolling one line */
2802 	if (mouse_row == 0)
2803 	    mouse_dragging = 2;
2804 	else
2805 	    mouse_dragging = 1;
2806     }
2807 
2808     /* When dragging the mouse above the window, scroll down. */
2809     if (is_drag && mouse_row < 0 && !in_status_line)
2810     {
2811 	scroll_redraw(FALSE, 1L);
2812 	mouse_row = 0;
2813     }
2814 
2815     if (start_visual.lnum)		/* right click in visual mode */
2816     {
2817        /* When ALT is pressed make Visual mode blockwise. */
2818        if (mod_mask & MOD_MASK_ALT)
2819 	   VIsual_mode = Ctrl_V;
2820 
2821 	/*
2822 	 * In Visual-block mode, divide the area in four, pick up the corner
2823 	 * that is in the quarter that the cursor is in.
2824 	 */
2825 	if (VIsual_mode == Ctrl_V)
2826 	{
2827 	    getvcols(curwin, &start_visual, &end_visual, &leftcol, &rightcol);
2828 	    if (curwin->w_curswant > (leftcol + rightcol) / 2)
2829 		end_visual.col = leftcol;
2830 	    else
2831 		end_visual.col = rightcol;
2832 	    if (curwin->w_cursor.lnum >=
2833 				    (start_visual.lnum + end_visual.lnum) / 2)
2834 		end_visual.lnum = start_visual.lnum;
2835 
2836 	    /* move VIsual to the right column */
2837 	    start_visual = curwin->w_cursor;	    /* save the cursor pos */
2838 	    curwin->w_cursor = end_visual;
2839 	    coladvance(end_visual.col);
2840 	    VIsual = curwin->w_cursor;
2841 	    curwin->w_cursor = start_visual;	    /* restore the cursor */
2842 	}
2843 	else
2844 	{
2845 	    /*
2846 	     * If the click is before the start of visual, change the start.
2847 	     * If the click is after the end of visual, change the end.  If
2848 	     * the click is inside the visual, change the closest side.
2849 	     */
2850 	    if (LT_POS(curwin->w_cursor, start_visual))
2851 		VIsual = end_visual;
2852 	    else if (LT_POS(end_visual, curwin->w_cursor))
2853 		VIsual = start_visual;
2854 	    else
2855 	    {
2856 		/* In the same line, compare column number */
2857 		if (end_visual.lnum == start_visual.lnum)
2858 		{
2859 		    if (curwin->w_cursor.col - start_visual.col >
2860 				    end_visual.col - curwin->w_cursor.col)
2861 			VIsual = start_visual;
2862 		    else
2863 			VIsual = end_visual;
2864 		}
2865 
2866 		/* In different lines, compare line number */
2867 		else
2868 		{
2869 		    diff = (curwin->w_cursor.lnum - start_visual.lnum) -
2870 				(end_visual.lnum - curwin->w_cursor.lnum);
2871 
2872 		    if (diff > 0)		/* closest to end */
2873 			VIsual = start_visual;
2874 		    else if (diff < 0)	/* closest to start */
2875 			VIsual = end_visual;
2876 		    else			/* in the middle line */
2877 		    {
2878 			if (curwin->w_cursor.col <
2879 					(start_visual.col + end_visual.col) / 2)
2880 			    VIsual = end_visual;
2881 			else
2882 			    VIsual = start_visual;
2883 		    }
2884 		}
2885 	    }
2886 	}
2887     }
2888     /*
2889      * If Visual mode started in insert mode, execute "CTRL-O"
2890      */
2891     else if ((State & INSERT) && VIsual_active)
2892 	stuffcharReadbuff(Ctrl_O);
2893 
2894     /*
2895      * Middle mouse click: Put text before cursor.
2896      */
2897     if (which_button == MOUSE_MIDDLE)
2898     {
2899 #ifdef FEAT_CLIPBOARD
2900 	if (clip_star.available && regname == 0)
2901 	    regname = '*';
2902 #endif
2903 	if (yank_register_mline(regname))
2904 	{
2905 	    if (mouse_past_bottom)
2906 		dir = FORWARD;
2907 	}
2908 	else if (mouse_past_eol)
2909 	    dir = FORWARD;
2910 
2911 	if (fixindent)
2912 	{
2913 	    c1 = (dir == BACKWARD) ? '[' : ']';
2914 	    c2 = 'p';
2915 	}
2916 	else
2917 	{
2918 	    c1 = (dir == FORWARD) ? 'p' : 'P';
2919 	    c2 = NUL;
2920 	}
2921 	prep_redo(regname, count, NUL, c1, NUL, c2, NUL);
2922 
2923 	/*
2924 	 * Remember where the paste started, so in edit() Insstart can be set
2925 	 * to this position
2926 	 */
2927 	if (restart_edit != 0)
2928 	    where_paste_started = curwin->w_cursor;
2929 	do_put(regname, dir, count, fixindent | PUT_CURSEND);
2930     }
2931 
2932 #if defined(FEAT_QUICKFIX)
2933     /*
2934      * Ctrl-Mouse click or double click in a quickfix window jumps to the
2935      * error under the mouse pointer.
2936      */
2937     else if (((mod_mask & MOD_MASK_CTRL)
2938 		|| (mod_mask & MOD_MASK_MULTI_CLICK) == MOD_MASK_2CLICK)
2939 	    && bt_quickfix(curbuf))
2940     {
2941 	if (curwin->w_llist_ref == NULL)	/* quickfix window */
2942 	    do_cmdline_cmd((char_u *)".cc");
2943 	else					/* location list window */
2944 	    do_cmdline_cmd((char_u *)".ll");
2945 	got_click = FALSE;		/* ignore drag&release now */
2946     }
2947 #endif
2948 
2949     /*
2950      * Ctrl-Mouse click (or double click in a help window) jumps to the tag
2951      * under the mouse pointer.
2952      */
2953     else if ((mod_mask & MOD_MASK_CTRL) || (curbuf->b_help
2954 		     && (mod_mask & MOD_MASK_MULTI_CLICK) == MOD_MASK_2CLICK))
2955     {
2956 	if (State & INSERT)
2957 	    stuffcharReadbuff(Ctrl_O);
2958 	stuffcharReadbuff(Ctrl_RSB);
2959 	got_click = FALSE;		/* ignore drag&release now */
2960     }
2961 
2962     /*
2963      * Shift-Mouse click searches for the next occurrence of the word under
2964      * the mouse pointer
2965      */
2966     else if ((mod_mask & MOD_MASK_SHIFT))
2967     {
2968 	if ((State & INSERT) || (VIsual_active && VIsual_select))
2969 	    stuffcharReadbuff(Ctrl_O);
2970 	if (which_button == MOUSE_LEFT)
2971 	    stuffcharReadbuff('*');
2972 	else	/* MOUSE_RIGHT */
2973 	    stuffcharReadbuff('#');
2974     }
2975 
2976     /* Handle double clicks, unless on status line */
2977     else if (in_status_line)
2978     {
2979 #ifdef FEAT_MOUSESHAPE
2980 	if ((is_drag || is_click) && !drag_status_line)
2981 	{
2982 	    drag_status_line = TRUE;
2983 	    update_mouseshape(-1);
2984 	}
2985 #endif
2986     }
2987     else if (in_sep_line)
2988     {
2989 #ifdef FEAT_MOUSESHAPE
2990 	if ((is_drag || is_click) && !drag_sep_line)
2991 	{
2992 	    drag_sep_line = TRUE;
2993 	    update_mouseshape(-1);
2994 	}
2995 #endif
2996     }
2997     else if ((mod_mask & MOD_MASK_MULTI_CLICK) && (State & (NORMAL | INSERT))
2998 	     && mouse_has(MOUSE_VISUAL))
2999     {
3000 	if (is_click || !VIsual_active)
3001 	{
3002 	    if (VIsual_active)
3003 		orig_cursor = VIsual;
3004 	    else
3005 	    {
3006 		check_visual_highlight();
3007 		VIsual = curwin->w_cursor;
3008 		orig_cursor = VIsual;
3009 		VIsual_active = TRUE;
3010 		VIsual_reselect = TRUE;
3011 		/* start Select mode if 'selectmode' contains "mouse" */
3012 		may_start_select('o');
3013 		setmouse();
3014 	    }
3015 	    if ((mod_mask & MOD_MASK_MULTI_CLICK) == MOD_MASK_2CLICK)
3016 	    {
3017 		/* Double click with ALT pressed makes it blockwise. */
3018 		if (mod_mask & MOD_MASK_ALT)
3019 		    VIsual_mode = Ctrl_V;
3020 		else
3021 		    VIsual_mode = 'v';
3022 	    }
3023 	    else if ((mod_mask & MOD_MASK_MULTI_CLICK) == MOD_MASK_3CLICK)
3024 		VIsual_mode = 'V';
3025 	    else if ((mod_mask & MOD_MASK_MULTI_CLICK) == MOD_MASK_4CLICK)
3026 		VIsual_mode = Ctrl_V;
3027 #ifdef FEAT_CLIPBOARD
3028 	    /* Make sure the clipboard gets updated.  Needed because start and
3029 	     * end may still be the same, and the selection needs to be owned */
3030 	    clip_star.vmode = NUL;
3031 #endif
3032 	}
3033 	/*
3034 	 * A double click selects a word or a block.
3035 	 */
3036 	if ((mod_mask & MOD_MASK_MULTI_CLICK) == MOD_MASK_2CLICK)
3037 	{
3038 	    pos_T	*pos = NULL;
3039 	    int		gc;
3040 
3041 	    if (is_click)
3042 	    {
3043 		/* If the character under the cursor (skipping white space) is
3044 		 * not a word character, try finding a match and select a (),
3045 		 * {}, [], #if/#endif, etc. block. */
3046 		end_visual = curwin->w_cursor;
3047 		while (gc = gchar_pos(&end_visual), VIM_ISWHITE(gc))
3048 		    inc(&end_visual);
3049 		if (oap != NULL)
3050 		    oap->motion_type = MCHAR;
3051 		if (oap != NULL
3052 			&& VIsual_mode == 'v'
3053 			&& !vim_iswordc(gchar_pos(&end_visual))
3054 			&& EQUAL_POS(curwin->w_cursor, VIsual)
3055 			&& (pos = findmatch(oap, NUL)) != NULL)
3056 		{
3057 		    curwin->w_cursor = *pos;
3058 		    if (oap->motion_type == MLINE)
3059 			VIsual_mode = 'V';
3060 		    else if (*p_sel == 'e')
3061 		    {
3062 			if (LT_POS(curwin->w_cursor, VIsual))
3063 			    ++VIsual.col;
3064 			else
3065 			    ++curwin->w_cursor.col;
3066 		    }
3067 		}
3068 	    }
3069 
3070 	    if (pos == NULL && (is_click || is_drag))
3071 	    {
3072 		/* When not found a match or when dragging: extend to include
3073 		 * a word. */
3074 		if (LT_POS(curwin->w_cursor, orig_cursor))
3075 		{
3076 		    find_start_of_word(&curwin->w_cursor);
3077 		    find_end_of_word(&VIsual);
3078 		}
3079 		else
3080 		{
3081 		    find_start_of_word(&VIsual);
3082 		    if (*p_sel == 'e' && *ml_get_cursor() != NUL)
3083 			curwin->w_cursor.col +=
3084 					 (*mb_ptr2len)(ml_get_cursor());
3085 		    find_end_of_word(&curwin->w_cursor);
3086 		}
3087 	    }
3088 	    curwin->w_set_curswant = TRUE;
3089 	}
3090 	if (is_click)
3091 	    redraw_curbuf_later(INVERTED);	/* update the inversion */
3092     }
3093     else if (VIsual_active && !old_active)
3094     {
3095 	if (mod_mask & MOD_MASK_ALT)
3096 	    VIsual_mode = Ctrl_V;
3097 	else
3098 	    VIsual_mode = 'v';
3099     }
3100 
3101     /* If Visual mode changed show it later. */
3102     if ((!VIsual_active && old_active && mode_displayed)
3103 	    || (VIsual_active && p_smd && msg_silent == 0
3104 				 && (!old_active || VIsual_mode != old_mode)))
3105 	redraw_cmdline = TRUE;
3106 
3107     return moved;
3108 }
3109 
3110 /*
3111  * Move "pos" back to the start of the word it's in.
3112  */
3113     static void
3114 find_start_of_word(pos_T *pos)
3115 {
3116     char_u	*line;
3117     int		cclass;
3118     int		col;
3119 
3120     line = ml_get(pos->lnum);
3121     cclass = get_mouse_class(line + pos->col);
3122 
3123     while (pos->col > 0)
3124     {
3125 	col = pos->col - 1;
3126 	col -= (*mb_head_off)(line, line + col);
3127 	if (get_mouse_class(line + col) != cclass)
3128 	    break;
3129 	pos->col = col;
3130     }
3131 }
3132 
3133 /*
3134  * Move "pos" forward to the end of the word it's in.
3135  * When 'selection' is "exclusive", the position is just after the word.
3136  */
3137     static void
3138 find_end_of_word(pos_T *pos)
3139 {
3140     char_u	*line;
3141     int		cclass;
3142     int		col;
3143 
3144     line = ml_get(pos->lnum);
3145     if (*p_sel == 'e' && pos->col > 0)
3146     {
3147 	--pos->col;
3148 	pos->col -= (*mb_head_off)(line, line + pos->col);
3149     }
3150     cclass = get_mouse_class(line + pos->col);
3151     while (line[pos->col] != NUL)
3152     {
3153 	col = pos->col + (*mb_ptr2len)(line + pos->col);
3154 	if (get_mouse_class(line + col) != cclass)
3155 	{
3156 	    if (*p_sel == 'e')
3157 		pos->col = col;
3158 	    break;
3159 	}
3160 	pos->col = col;
3161     }
3162 }
3163 
3164 /*
3165  * Get class of a character for selection: same class means same word.
3166  * 0: blank
3167  * 1: punctuation groups
3168  * 2: normal word character
3169  * >2: multi-byte word character.
3170  */
3171     static int
3172 get_mouse_class(char_u *p)
3173 {
3174     int		c;
3175 
3176     if (has_mbyte && MB_BYTE2LEN(p[0]) > 1)
3177 	return mb_get_class(p);
3178 
3179     c = *p;
3180     if (c == ' ' || c == '\t')
3181 	return 0;
3182 
3183     if (vim_iswordc(c))
3184 	return 2;
3185 
3186     /*
3187      * There are a few special cases where we want certain combinations of
3188      * characters to be considered as a single word.  These are things like
3189      * "->", "/ *", "*=", "+=", "&=", "<=", ">=", "!=" etc.  Otherwise, each
3190      * character is in its own class.
3191      */
3192     if (c != NUL && vim_strchr((char_u *)"-+*/%<>&|^!=", c) != NULL)
3193 	return 1;
3194     return c;
3195 }
3196 #endif /* FEAT_MOUSE */
3197 
3198 /*
3199  * Check if  highlighting for visual mode is possible, give a warning message
3200  * if not.
3201  */
3202     void
3203 check_visual_highlight(void)
3204 {
3205     static int	    did_check = FALSE;
3206 
3207     if (full_screen)
3208     {
3209 	if (!did_check && HL_ATTR(HLF_V) == 0)
3210 	    msg(_("Warning: terminal cannot highlight"));
3211 	did_check = TRUE;
3212     }
3213 }
3214 
3215 /*
3216  * End Visual mode.
3217  * This function should ALWAYS be called to end Visual mode, except from
3218  * do_pending_operator().
3219  */
3220     void
3221 end_visual_mode(void)
3222 {
3223 #ifdef FEAT_CLIPBOARD
3224     /*
3225      * If we are using the clipboard, then remember what was selected in case
3226      * we need to paste it somewhere while we still own the selection.
3227      * Only do this when the clipboard is already owned.  Don't want to grab
3228      * the selection when hitting ESC.
3229      */
3230     if (clip_star.available && clip_star.owned)
3231 	clip_auto_select();
3232 #endif
3233 
3234     VIsual_active = FALSE;
3235 #ifdef FEAT_MOUSE
3236     setmouse();
3237     mouse_dragging = 0;
3238 #endif
3239 
3240     /* Save the current VIsual area for '< and '> marks, and "gv" */
3241     curbuf->b_visual.vi_mode = VIsual_mode;
3242     curbuf->b_visual.vi_start = VIsual;
3243     curbuf->b_visual.vi_end = curwin->w_cursor;
3244     curbuf->b_visual.vi_curswant = curwin->w_curswant;
3245 #ifdef FEAT_EVAL
3246     curbuf->b_visual_mode_eval = VIsual_mode;
3247 #endif
3248     if (!virtual_active())
3249 	curwin->w_cursor.coladd = 0;
3250     may_clear_cmdline();
3251 
3252     adjust_cursor_eol();
3253 }
3254 
3255 /*
3256  * Reset VIsual_active and VIsual_reselect.
3257  */
3258     void
3259 reset_VIsual_and_resel(void)
3260 {
3261     if (VIsual_active)
3262     {
3263 	end_visual_mode();
3264 	redraw_curbuf_later(INVERTED);	/* delete the inversion later */
3265     }
3266     VIsual_reselect = FALSE;
3267 }
3268 
3269 /*
3270  * Reset VIsual_active and VIsual_reselect if it's set.
3271  */
3272     void
3273 reset_VIsual(void)
3274 {
3275     if (VIsual_active)
3276     {
3277 	end_visual_mode();
3278 	redraw_curbuf_later(INVERTED);	/* delete the inversion later */
3279 	VIsual_reselect = FALSE;
3280     }
3281 }
3282 
3283 /*
3284  * Check for a balloon-eval special item to include when searching for an
3285  * identifier.  When "dir" is BACKWARD "ptr[-1]" must be valid!
3286  * Returns TRUE if the character at "*ptr" should be included.
3287  * "dir" is FORWARD or BACKWARD, the direction of searching.
3288  * "*colp" is in/decremented if "ptr[-dir]" should also be included.
3289  * "bnp" points to a counter for square brackets.
3290  */
3291     static int
3292 find_is_eval_item(
3293     char_u	*ptr,
3294     int		*colp,
3295     int		*bnp,
3296     int		dir)
3297 {
3298     /* Accept everything inside []. */
3299     if ((*ptr == ']' && dir == BACKWARD) || (*ptr == '[' && dir == FORWARD))
3300 	++*bnp;
3301     if (*bnp > 0)
3302     {
3303 	if ((*ptr == '[' && dir == BACKWARD) || (*ptr == ']' && dir == FORWARD))
3304 	    --*bnp;
3305 	return TRUE;
3306     }
3307 
3308     /* skip over "s.var" */
3309     if (*ptr == '.')
3310 	return TRUE;
3311 
3312     /* two-character item: s->var */
3313     if (ptr[dir == BACKWARD ? 0 : 1] == '>'
3314 	    && ptr[dir == BACKWARD ? -1 : 0] == '-')
3315     {
3316 	*colp += dir;
3317 	return TRUE;
3318     }
3319     return FALSE;
3320 }
3321 
3322 /*
3323  * Find the identifier under or to the right of the cursor.
3324  * "find_type" can have one of three values:
3325  * FIND_IDENT:   find an identifier (keyword)
3326  * FIND_STRING:  find any non-white string
3327  * FIND_IDENT + FIND_STRING: find any non-white string, identifier preferred.
3328  * FIND_EVAL:	 find text useful for C program debugging
3329  *
3330  * There are three steps:
3331  * 1. Search forward for the start of an identifier/string.  Doesn't move if
3332  *    already on one.
3333  * 2. Search backward for the start of this identifier/string.
3334  *    This doesn't match the real Vi but I like it a little better and it
3335  *    shouldn't bother anyone.
3336  * 3. Search forward to the end of this identifier/string.
3337  *    When FIND_IDENT isn't defined, we backup until a blank.
3338  *
3339  * Returns the length of the string, or zero if no string is found.
3340  * If a string is found, a pointer to the string is put in "*string".  This
3341  * string is not always NUL terminated.
3342  */
3343     int
3344 find_ident_under_cursor(char_u **string, int find_type)
3345 {
3346     return find_ident_at_pos(curwin, curwin->w_cursor.lnum,
3347 				     curwin->w_cursor.col, string, find_type);
3348 }
3349 
3350 /*
3351  * Like find_ident_under_cursor(), but for any window and any position.
3352  * However: Uses 'iskeyword' from the current window!.
3353  */
3354     int
3355 find_ident_at_pos(
3356     win_T	*wp,
3357     linenr_T	lnum,
3358     colnr_T	startcol,
3359     char_u	**string,
3360     int		find_type)
3361 {
3362     char_u	*ptr;
3363     int		col = 0;	    /* init to shut up GCC */
3364     int		i;
3365     int		this_class = 0;
3366     int		prev_class;
3367     int		prevcol;
3368     int		bn = 0;	    /* bracket nesting */
3369 
3370     /*
3371      * if i == 0: try to find an identifier
3372      * if i == 1: try to find any non-white string
3373      */
3374     ptr = ml_get_buf(wp->w_buffer, lnum, FALSE);
3375     for (i = (find_type & FIND_IDENT) ? 0 : 1;	i < 2; ++i)
3376     {
3377 	/*
3378 	 * 1. skip to start of identifier/string
3379 	 */
3380 	col = startcol;
3381 	if (has_mbyte)
3382 	{
3383 	    while (ptr[col] != NUL)
3384 	    {
3385 		/* Stop at a ']' to evaluate "a[x]". */
3386 		if ((find_type & FIND_EVAL) && ptr[col] == ']')
3387 		    break;
3388 		this_class = mb_get_class(ptr + col);
3389 		if (this_class != 0 && (i == 1 || this_class != 1))
3390 		    break;
3391 		col += (*mb_ptr2len)(ptr + col);
3392 	    }
3393 	}
3394 	else
3395 	    while (ptr[col] != NUL
3396 		    && (i == 0 ? !vim_iswordc(ptr[col]) : VIM_ISWHITE(ptr[col]))
3397 		    && (!(find_type & FIND_EVAL) || ptr[col] != ']')
3398 		    )
3399 		++col;
3400 
3401 	/* When starting on a ']' count it, so that we include the '['. */
3402 	bn = ptr[col] == ']';
3403 
3404 	/*
3405 	 * 2. Back up to start of identifier/string.
3406 	 */
3407 	if (has_mbyte)
3408 	{
3409 	    /* Remember class of character under cursor. */
3410 	    if ((find_type & FIND_EVAL) && ptr[col] == ']')
3411 		this_class = mb_get_class((char_u *)"a");
3412 	    else
3413 		this_class = mb_get_class(ptr + col);
3414 	    while (col > 0 && this_class != 0)
3415 	    {
3416 		prevcol = col - 1 - (*mb_head_off)(ptr, ptr + col - 1);
3417 		prev_class = mb_get_class(ptr + prevcol);
3418 		if (this_class != prev_class
3419 			&& (i == 0
3420 			    || prev_class == 0
3421 			    || (find_type & FIND_IDENT))
3422 			&& (!(find_type & FIND_EVAL)
3423 			    || prevcol == 0
3424 			    || !find_is_eval_item(ptr + prevcol, &prevcol,
3425 							       &bn, BACKWARD))
3426 			)
3427 		    break;
3428 		col = prevcol;
3429 	    }
3430 
3431 	    /* If we don't want just any old string, or we've found an
3432 	     * identifier, stop searching. */
3433 	    if (this_class > 2)
3434 		this_class = 2;
3435 	    if (!(find_type & FIND_STRING) || this_class == 2)
3436 		break;
3437 	}
3438 	else
3439 	{
3440 	    while (col > 0
3441 		    && ((i == 0
3442 			    ? vim_iswordc(ptr[col - 1])
3443 			    : (!VIM_ISWHITE(ptr[col - 1])
3444 				&& (!(find_type & FIND_IDENT)
3445 				    || !vim_iswordc(ptr[col - 1]))))
3446 			|| ((find_type & FIND_EVAL)
3447 			    && col > 1
3448 			    && find_is_eval_item(ptr + col - 1, &col,
3449 							       &bn, BACKWARD))
3450 			))
3451 		--col;
3452 
3453 	    /* If we don't want just any old string, or we've found an
3454 	     * identifier, stop searching. */
3455 	    if (!(find_type & FIND_STRING) || vim_iswordc(ptr[col]))
3456 		break;
3457 	}
3458     }
3459 
3460     if (ptr[col] == NUL || (i == 0
3461 		&& (has_mbyte ? this_class != 2 : !vim_iswordc(ptr[col]))))
3462     {
3463 	/*
3464 	 * didn't find an identifier or string
3465 	 */
3466 	if (find_type & FIND_STRING)
3467 	    emsg(_("E348: No string under cursor"));
3468 	else
3469 	    emsg(_(e_noident));
3470 	return 0;
3471     }
3472     ptr += col;
3473     *string = ptr;
3474 
3475     /*
3476      * 3. Find the end if the identifier/string.
3477      */
3478     bn = 0;
3479     startcol -= col;
3480     col = 0;
3481     if (has_mbyte)
3482     {
3483 	/* Search for point of changing multibyte character class. */
3484 	this_class = mb_get_class(ptr);
3485 	while (ptr[col] != NUL
3486 		&& ((i == 0 ? mb_get_class(ptr + col) == this_class
3487 			    : mb_get_class(ptr + col) != 0)
3488 		    || ((find_type & FIND_EVAL)
3489 			&& col <= (int)startcol
3490 			&& find_is_eval_item(ptr + col, &col, &bn, FORWARD))
3491 		))
3492 	    col += (*mb_ptr2len)(ptr + col);
3493     }
3494     else
3495 	while ((i == 0 ? vim_iswordc(ptr[col])
3496 		       : (ptr[col] != NUL && !VIM_ISWHITE(ptr[col])))
3497 		    || ((find_type & FIND_EVAL)
3498 			&& col <= (int)startcol
3499 			&& find_is_eval_item(ptr + col, &col, &bn, FORWARD))
3500 		)
3501 	    ++col;
3502 
3503     return col;
3504 }
3505 
3506 /*
3507  * Prepare for redo of a normal command.
3508  */
3509     static void
3510 prep_redo_cmd(cmdarg_T *cap)
3511 {
3512     prep_redo(cap->oap->regname, cap->count0,
3513 				     NUL, cap->cmdchar, NUL, NUL, cap->nchar);
3514 }
3515 
3516 /*
3517  * Prepare for redo of any command.
3518  * Note that only the last argument can be a multi-byte char.
3519  */
3520     static void
3521 prep_redo(
3522     int	    regname,
3523     long    num,
3524     int	    cmd1,
3525     int	    cmd2,
3526     int	    cmd3,
3527     int	    cmd4,
3528     int	    cmd5)
3529 {
3530     ResetRedobuff();
3531     if (regname != 0)	/* yank from specified buffer */
3532     {
3533 	AppendCharToRedobuff('"');
3534 	AppendCharToRedobuff(regname);
3535     }
3536     if (num)
3537 	AppendNumberToRedobuff(num);
3538 
3539     if (cmd1 != NUL)
3540 	AppendCharToRedobuff(cmd1);
3541     if (cmd2 != NUL)
3542 	AppendCharToRedobuff(cmd2);
3543     if (cmd3 != NUL)
3544 	AppendCharToRedobuff(cmd3);
3545     if (cmd4 != NUL)
3546 	AppendCharToRedobuff(cmd4);
3547     if (cmd5 != NUL)
3548 	AppendCharToRedobuff(cmd5);
3549 }
3550 
3551 /*
3552  * check for operator active and clear it
3553  *
3554  * return TRUE if operator was active
3555  */
3556     static int
3557 checkclearop(oparg_T *oap)
3558 {
3559     if (oap->op_type == OP_NOP)
3560 	return FALSE;
3561     clearopbeep(oap);
3562     return TRUE;
3563 }
3564 
3565 /*
3566  * Check for operator or Visual active.  Clear active operator.
3567  *
3568  * Return TRUE if operator or Visual was active.
3569  */
3570     static int
3571 checkclearopq(oparg_T *oap)
3572 {
3573     if (oap->op_type == OP_NOP && !VIsual_active)
3574 	return FALSE;
3575     clearopbeep(oap);
3576     return TRUE;
3577 }
3578 
3579     static void
3580 clearop(oparg_T *oap)
3581 {
3582     oap->op_type = OP_NOP;
3583     oap->regname = 0;
3584     oap->motion_force = NUL;
3585     oap->use_reg_one = FALSE;
3586 }
3587 
3588     static void
3589 clearopbeep(oparg_T *oap)
3590 {
3591     clearop(oap);
3592     beep_flush();
3593 }
3594 
3595 /*
3596  * Remove the shift modifier from a special key.
3597  */
3598     static void
3599 unshift_special(cmdarg_T *cap)
3600 {
3601     switch (cap->cmdchar)
3602     {
3603 	case K_S_RIGHT:	cap->cmdchar = K_RIGHT; break;
3604 	case K_S_LEFT:	cap->cmdchar = K_LEFT; break;
3605 	case K_S_UP:	cap->cmdchar = K_UP; break;
3606 	case K_S_DOWN:	cap->cmdchar = K_DOWN; break;
3607 	case K_S_HOME:	cap->cmdchar = K_HOME; break;
3608 	case K_S_END:	cap->cmdchar = K_END; break;
3609     }
3610     cap->cmdchar = simplify_key(cap->cmdchar, &mod_mask);
3611 }
3612 
3613 /*
3614  * If the mode is currently displayed clear the command line or update the
3615  * command displayed.
3616  */
3617     static void
3618 may_clear_cmdline(void)
3619 {
3620     if (mode_displayed)
3621 	clear_cmdline = TRUE;   /* unshow visual mode later */
3622 #ifdef FEAT_CMDL_INFO
3623     else
3624 	clear_showcmd();
3625 #endif
3626 }
3627 
3628 #if defined(FEAT_CMDL_INFO) || defined(PROTO)
3629 /*
3630  * Routines for displaying a partly typed command
3631  */
3632 
3633 #define SHOWCMD_BUFLEN SHOWCMD_COLS + 1 + 30
3634 static char_u	showcmd_buf[SHOWCMD_BUFLEN];
3635 static char_u	old_showcmd_buf[SHOWCMD_BUFLEN];  /* For push_showcmd() */
3636 static int	showcmd_is_clear = TRUE;
3637 static int	showcmd_visual = FALSE;
3638 
3639 static void display_showcmd(void);
3640 
3641     void
3642 clear_showcmd(void)
3643 {
3644     if (!p_sc)
3645 	return;
3646 
3647     if (VIsual_active && !char_avail())
3648     {
3649 	int		cursor_bot = LT_POS(VIsual, curwin->w_cursor);
3650 	long		lines;
3651 	colnr_T		leftcol, rightcol;
3652 	linenr_T	top, bot;
3653 
3654 	/* Show the size of the Visual area. */
3655 	if (cursor_bot)
3656 	{
3657 	    top = VIsual.lnum;
3658 	    bot = curwin->w_cursor.lnum;
3659 	}
3660 	else
3661 	{
3662 	    top = curwin->w_cursor.lnum;
3663 	    bot = VIsual.lnum;
3664 	}
3665 # ifdef FEAT_FOLDING
3666 	/* Include closed folds as a whole. */
3667 	(void)hasFolding(top, &top, NULL);
3668 	(void)hasFolding(bot, NULL, &bot);
3669 # endif
3670 	lines = bot - top + 1;
3671 
3672 	if (VIsual_mode == Ctrl_V)
3673 	{
3674 # ifdef FEAT_LINEBREAK
3675 	    char_u *saved_sbr = p_sbr;
3676 
3677 	    /* Make 'sbr' empty for a moment to get the correct size. */
3678 	    p_sbr = empty_option;
3679 # endif
3680 	    getvcols(curwin, &curwin->w_cursor, &VIsual, &leftcol, &rightcol);
3681 # ifdef FEAT_LINEBREAK
3682 	    p_sbr = saved_sbr;
3683 # endif
3684 	    sprintf((char *)showcmd_buf, "%ldx%ld", lines,
3685 					      (long)(rightcol - leftcol + 1));
3686 	}
3687 	else if (VIsual_mode == 'V' || VIsual.lnum != curwin->w_cursor.lnum)
3688 	    sprintf((char *)showcmd_buf, "%ld", lines);
3689 	else
3690 	{
3691 	    char_u  *s, *e;
3692 	    int	    l;
3693 	    int	    bytes = 0;
3694 	    int	    chars = 0;
3695 
3696 	    if (cursor_bot)
3697 	    {
3698 		s = ml_get_pos(&VIsual);
3699 		e = ml_get_cursor();
3700 	    }
3701 	    else
3702 	    {
3703 		s = ml_get_cursor();
3704 		e = ml_get_pos(&VIsual);
3705 	    }
3706 	    while ((*p_sel != 'e') ? s <= e : s < e)
3707 	    {
3708 		l = (*mb_ptr2len)(s);
3709 		if (l == 0)
3710 		{
3711 		    ++bytes;
3712 		    ++chars;
3713 		    break;  /* end of line */
3714 		}
3715 		bytes += l;
3716 		++chars;
3717 		s += l;
3718 	    }
3719 	    if (bytes == chars)
3720 		sprintf((char *)showcmd_buf, "%d", chars);
3721 	    else
3722 		sprintf((char *)showcmd_buf, "%d-%d", chars, bytes);
3723 	}
3724 	showcmd_buf[SHOWCMD_COLS] = NUL;	/* truncate */
3725 	showcmd_visual = TRUE;
3726     }
3727     else
3728     {
3729 	showcmd_buf[0] = NUL;
3730 	showcmd_visual = FALSE;
3731 
3732 	/* Don't actually display something if there is nothing to clear. */
3733 	if (showcmd_is_clear)
3734 	    return;
3735     }
3736 
3737     display_showcmd();
3738 }
3739 
3740 /*
3741  * Add 'c' to string of shown command chars.
3742  * Return TRUE if output has been written (and setcursor() has been called).
3743  */
3744     int
3745 add_to_showcmd(int c)
3746 {
3747     char_u	*p;
3748     int		old_len;
3749     int		extra_len;
3750     int		overflow;
3751 #if defined(FEAT_MOUSE)
3752     int		i;
3753     static int	ignore[] =
3754     {
3755 # ifdef FEAT_GUI
3756 	K_VER_SCROLLBAR, K_HOR_SCROLLBAR,
3757 	K_LEFTMOUSE_NM, K_LEFTRELEASE_NM,
3758 # endif
3759 	K_IGNORE, K_PS,
3760 	K_LEFTMOUSE, K_LEFTDRAG, K_LEFTRELEASE, K_MOUSEMOVE,
3761 	K_MIDDLEMOUSE, K_MIDDLEDRAG, K_MIDDLERELEASE,
3762 	K_RIGHTMOUSE, K_RIGHTDRAG, K_RIGHTRELEASE,
3763 	K_MOUSEDOWN, K_MOUSEUP, K_MOUSELEFT, K_MOUSERIGHT,
3764 	K_X1MOUSE, K_X1DRAG, K_X1RELEASE, K_X2MOUSE, K_X2DRAG, K_X2RELEASE,
3765 	K_CURSORHOLD,
3766 	0
3767     };
3768 #endif
3769 
3770     if (!p_sc || msg_silent != 0)
3771 	return FALSE;
3772 
3773     if (showcmd_visual)
3774     {
3775 	showcmd_buf[0] = NUL;
3776 	showcmd_visual = FALSE;
3777     }
3778 
3779 #if defined(FEAT_MOUSE)
3780     /* Ignore keys that are scrollbar updates and mouse clicks */
3781     if (IS_SPECIAL(c))
3782 	for (i = 0; ignore[i] != 0; ++i)
3783 	    if (ignore[i] == c)
3784 		return FALSE;
3785 #endif
3786 
3787     p = transchar(c);
3788     if (*p == ' ')
3789 	STRCPY(p, "<20>");
3790     old_len = (int)STRLEN(showcmd_buf);
3791     extra_len = (int)STRLEN(p);
3792     overflow = old_len + extra_len - SHOWCMD_COLS;
3793     if (overflow > 0)
3794 	mch_memmove(showcmd_buf, showcmd_buf + overflow,
3795 						      old_len - overflow + 1);
3796     STRCAT(showcmd_buf, p);
3797 
3798     if (char_avail())
3799 	return FALSE;
3800 
3801     display_showcmd();
3802 
3803     return TRUE;
3804 }
3805 
3806     void
3807 add_to_showcmd_c(int c)
3808 {
3809     if (!add_to_showcmd(c))
3810 	setcursor();
3811 }
3812 
3813 /*
3814  * Delete 'len' characters from the end of the shown command.
3815  */
3816     static void
3817 del_from_showcmd(int len)
3818 {
3819     int	    old_len;
3820 
3821     if (!p_sc)
3822 	return;
3823 
3824     old_len = (int)STRLEN(showcmd_buf);
3825     if (len > old_len)
3826 	len = old_len;
3827     showcmd_buf[old_len - len] = NUL;
3828 
3829     if (!char_avail())
3830 	display_showcmd();
3831 }
3832 
3833 /*
3834  * push_showcmd() and pop_showcmd() are used when waiting for the user to type
3835  * something and there is a partial mapping.
3836  */
3837     void
3838 push_showcmd(void)
3839 {
3840     if (p_sc)
3841 	STRCPY(old_showcmd_buf, showcmd_buf);
3842 }
3843 
3844     void
3845 pop_showcmd(void)
3846 {
3847     if (!p_sc)
3848 	return;
3849 
3850     STRCPY(showcmd_buf, old_showcmd_buf);
3851 
3852     display_showcmd();
3853 }
3854 
3855     static void
3856 display_showcmd(void)
3857 {
3858     int	    len;
3859 
3860     cursor_off();
3861 
3862     len = (int)STRLEN(showcmd_buf);
3863     if (len == 0)
3864 	showcmd_is_clear = TRUE;
3865     else
3866     {
3867 	screen_puts(showcmd_buf, (int)Rows - 1, sc_col, 0);
3868 	showcmd_is_clear = FALSE;
3869     }
3870 
3871     /*
3872      * clear the rest of an old message by outputting up to SHOWCMD_COLS
3873      * spaces
3874      */
3875     screen_puts((char_u *)"          " + len, (int)Rows - 1, sc_col + len, 0);
3876 
3877     setcursor();	    /* put cursor back where it belongs */
3878 }
3879 #endif
3880 
3881 /*
3882  * When "check" is FALSE, prepare for commands that scroll the window.
3883  * When "check" is TRUE, take care of scroll-binding after the window has
3884  * scrolled.  Called from normal_cmd() and edit().
3885  */
3886     void
3887 do_check_scrollbind(int check)
3888 {
3889     static win_T	*old_curwin = NULL;
3890     static linenr_T	old_topline = 0;
3891 #ifdef FEAT_DIFF
3892     static int		old_topfill = 0;
3893 #endif
3894     static buf_T	*old_buf = NULL;
3895     static colnr_T	old_leftcol = 0;
3896 
3897     if (check && curwin->w_p_scb)
3898     {
3899 	/* If a ":syncbind" command was just used, don't scroll, only reset
3900 	 * the values. */
3901 	if (did_syncbind)
3902 	    did_syncbind = FALSE;
3903 	else if (curwin == old_curwin)
3904 	{
3905 	    /*
3906 	     * Synchronize other windows, as necessary according to
3907 	     * 'scrollbind'.  Don't do this after an ":edit" command, except
3908 	     * when 'diff' is set.
3909 	     */
3910 	    if ((curwin->w_buffer == old_buf
3911 #ifdef FEAT_DIFF
3912 			|| curwin->w_p_diff
3913 #endif
3914 		)
3915 		&& (curwin->w_topline != old_topline
3916 #ifdef FEAT_DIFF
3917 			|| curwin->w_topfill != old_topfill
3918 #endif
3919 			|| curwin->w_leftcol != old_leftcol))
3920 	    {
3921 		check_scrollbind(curwin->w_topline - old_topline,
3922 			(long)(curwin->w_leftcol - old_leftcol));
3923 	    }
3924 	}
3925 	else if (vim_strchr(p_sbo, 'j')) /* jump flag set in 'scrollopt' */
3926 	{
3927 	    /*
3928 	     * When switching between windows, make sure that the relative
3929 	     * vertical offset is valid for the new window.  The relative
3930 	     * offset is invalid whenever another 'scrollbind' window has
3931 	     * scrolled to a point that would force the current window to
3932 	     * scroll past the beginning or end of its buffer.  When the
3933 	     * resync is performed, some of the other 'scrollbind' windows may
3934 	     * need to jump so that the current window's relative position is
3935 	     * visible on-screen.
3936 	     */
3937 	    check_scrollbind(curwin->w_topline - curwin->w_scbind_pos, 0L);
3938 	}
3939 	curwin->w_scbind_pos = curwin->w_topline;
3940     }
3941 
3942     old_curwin = curwin;
3943     old_topline = curwin->w_topline;
3944 #ifdef FEAT_DIFF
3945     old_topfill = curwin->w_topfill;
3946 #endif
3947     old_buf = curwin->w_buffer;
3948     old_leftcol = curwin->w_leftcol;
3949 }
3950 
3951 /*
3952  * Synchronize any windows that have "scrollbind" set, based on the
3953  * number of rows by which the current window has changed
3954  * (1998-11-02 16:21:01  R. Edward Ralston <[email protected]>)
3955  */
3956     void
3957 check_scrollbind(linenr_T topline_diff, long leftcol_diff)
3958 {
3959     int		want_ver;
3960     int		want_hor;
3961     win_T	*old_curwin = curwin;
3962     buf_T	*old_curbuf = curbuf;
3963     int		old_VIsual_select = VIsual_select;
3964     int		old_VIsual_active = VIsual_active;
3965     colnr_T	tgt_leftcol = curwin->w_leftcol;
3966     long	topline;
3967     long	y;
3968 
3969     /*
3970      * check 'scrollopt' string for vertical and horizontal scroll options
3971      */
3972     want_ver = (vim_strchr(p_sbo, 'v') && topline_diff != 0);
3973 #ifdef FEAT_DIFF
3974     want_ver |= old_curwin->w_p_diff;
3975 #endif
3976     want_hor = (vim_strchr(p_sbo, 'h') && (leftcol_diff || topline_diff != 0));
3977 
3978     /*
3979      * loop through the scrollbound windows and scroll accordingly
3980      */
3981     VIsual_select = VIsual_active = 0;
3982     FOR_ALL_WINDOWS(curwin)
3983     {
3984 	curbuf = curwin->w_buffer;
3985 	/* skip original window  and windows with 'noscrollbind' */
3986 	if (curwin != old_curwin && curwin->w_p_scb)
3987 	{
3988 	    /*
3989 	     * do the vertical scroll
3990 	     */
3991 	    if (want_ver)
3992 	    {
3993 #ifdef FEAT_DIFF
3994 		if (old_curwin->w_p_diff && curwin->w_p_diff)
3995 		{
3996 		    diff_set_topline(old_curwin, curwin);
3997 		}
3998 		else
3999 #endif
4000 		{
4001 		    curwin->w_scbind_pos += topline_diff;
4002 		    topline = curwin->w_scbind_pos;
4003 		    if (topline > curbuf->b_ml.ml_line_count)
4004 			topline = curbuf->b_ml.ml_line_count;
4005 		    if (topline < 1)
4006 			topline = 1;
4007 
4008 		    y = topline - curwin->w_topline;
4009 		    if (y > 0)
4010 			scrollup(y, FALSE);
4011 		    else
4012 			scrolldown(-y, FALSE);
4013 		}
4014 
4015 		redraw_later(VALID);
4016 		cursor_correct();
4017 		curwin->w_redr_status = TRUE;
4018 	    }
4019 
4020 	    /*
4021 	     * do the horizontal scroll
4022 	     */
4023 	    if (want_hor && curwin->w_leftcol != tgt_leftcol)
4024 	    {
4025 		curwin->w_leftcol = tgt_leftcol;
4026 		leftcol_changed();
4027 	    }
4028 	}
4029     }
4030 
4031     /*
4032      * reset current-window
4033      */
4034     VIsual_select = old_VIsual_select;
4035     VIsual_active = old_VIsual_active;
4036     curwin = old_curwin;
4037     curbuf = old_curbuf;
4038 }
4039 
4040 /*
4041  * Command character that's ignored.
4042  * Used for CTRL-Q and CTRL-S to avoid problems with terminals that use
4043  * xon/xoff.
4044  */
4045     static void
4046 nv_ignore(cmdarg_T *cap)
4047 {
4048     cap->retval |= CA_COMMAND_BUSY;	/* don't call edit() now */
4049 }
4050 
4051 /*
4052  * Command character that doesn't do anything, but unlike nv_ignore() does
4053  * start edit().  Used for "startinsert" executed while starting up.
4054  */
4055     static void
4056 nv_nop(cmdarg_T *cap UNUSED)
4057 {
4058 }
4059 
4060 /*
4061  * Command character doesn't exist.
4062  */
4063     static void
4064 nv_error(cmdarg_T *cap)
4065 {
4066     clearopbeep(cap->oap);
4067 }
4068 
4069 /*
4070  * <Help> and <F1> commands.
4071  */
4072     static void
4073 nv_help(cmdarg_T *cap)
4074 {
4075     if (!checkclearopq(cap->oap))
4076 	ex_help(NULL);
4077 }
4078 
4079 /*
4080  * CTRL-A and CTRL-X: Add or subtract from letter or number under cursor.
4081  */
4082     static void
4083 nv_addsub(cmdarg_T *cap)
4084 {
4085 #ifdef FEAT_JOB_CHANNEL
4086     if (bt_prompt(curbuf) && !prompt_curpos_editable())
4087 	clearopbeep(cap->oap);
4088     else
4089 #endif
4090     if (!VIsual_active && cap->oap->op_type == OP_NOP)
4091     {
4092 	prep_redo_cmd(cap);
4093 	cap->oap->op_type = cap->cmdchar == Ctrl_A ?  OP_NR_ADD : OP_NR_SUB;
4094 	op_addsub(cap->oap, cap->count1, cap->arg);
4095 	cap->oap->op_type = OP_NOP;
4096     }
4097     else if (VIsual_active)
4098 	nv_operator(cap);
4099     else
4100 	clearop(cap->oap);
4101 }
4102 
4103 /*
4104  * CTRL-F, CTRL-B, etc: Scroll page up or down.
4105  */
4106     static void
4107 nv_page(cmdarg_T *cap)
4108 {
4109     if (!checkclearop(cap->oap))
4110     {
4111 	if (mod_mask & MOD_MASK_CTRL)
4112 	{
4113 	    /* <C-PageUp>: tab page back; <C-PageDown>: tab page forward */
4114 	    if (cap->arg == BACKWARD)
4115 		goto_tabpage(-(int)cap->count1);
4116 	    else
4117 		goto_tabpage((int)cap->count0);
4118 	}
4119 	else
4120 	    (void)onepage(cap->arg, cap->count1);
4121     }
4122 }
4123 
4124 /*
4125  * Implementation of "gd" and "gD" command.
4126  */
4127     static void
4128 nv_gd(
4129     oparg_T	*oap,
4130     int		nchar,
4131     int		thisblock)	/* 1 for "1gd" and "1gD" */
4132 {
4133     int		len;
4134     char_u	*ptr;
4135 
4136     if ((len = find_ident_under_cursor(&ptr, FIND_IDENT)) == 0
4137 	    || find_decl(ptr, len, nchar == 'd', thisblock, SEARCH_START)
4138 								      == FAIL)
4139 	clearopbeep(oap);
4140 #ifdef FEAT_FOLDING
4141     else if ((fdo_flags & FDO_SEARCH) && KeyTyped && oap->op_type == OP_NOP)
4142 	foldOpenCursor();
4143 #endif
4144 }
4145 
4146 /*
4147  * Return TRUE if line[offset] is not inside a C-style comment or string, FALSE
4148  * otherwise.
4149  */
4150     static int
4151 is_ident(char_u *line, int offset)
4152 {
4153     int	i;
4154     int	incomment = FALSE;
4155     int	instring = 0;
4156     int	prev = 0;
4157 
4158     for (i = 0; i < offset && line[i] != NUL; i++)
4159     {
4160 	if (instring != 0)
4161 	{
4162 	    if (prev != '\\' && line[i] == instring)
4163 		instring = 0;
4164 	}
4165 	else if ((line[i] == '"' || line[i] == '\'') && !incomment)
4166 	{
4167 	    instring = line[i];
4168 	}
4169 	else
4170 	{
4171 	    if (incomment)
4172 	    {
4173 		if (prev == '*' && line[i] == '/')
4174 		    incomment = FALSE;
4175 	    }
4176 	    else if (prev == '/' && line[i] == '*')
4177 	    {
4178 		incomment = TRUE;
4179 	    }
4180 	    else if (prev == '/' && line[i] == '/')
4181 	    {
4182 		return FALSE;
4183 	    }
4184 	}
4185 
4186 	prev = line[i];
4187     }
4188 
4189     return incomment == FALSE && instring == 0;
4190 }
4191 
4192 /*
4193  * Search for variable declaration of "ptr[len]".
4194  * When "locally" is TRUE in the current function ("gd"), otherwise in the
4195  * current file ("gD").
4196  * When "thisblock" is TRUE check the {} block scope.
4197  * Return FAIL when not found.
4198  */
4199     int
4200 find_decl(
4201     char_u	*ptr,
4202     int		len,
4203     int		locally,
4204     int		thisblock,
4205     int		flags_arg)	/* flags passed to searchit() */
4206 {
4207     char_u	*pat;
4208     pos_T	old_pos;
4209     pos_T	par_pos;
4210     pos_T	found_pos;
4211     int		t;
4212     int		save_p_ws;
4213     int		save_p_scs;
4214     int		retval = OK;
4215     int		incll;
4216     int		searchflags = flags_arg;
4217     int		valid;
4218 
4219     if ((pat = alloc(len + 7)) == NULL)
4220 	return FAIL;
4221 
4222     /* Put "\V" before the pattern to avoid that the special meaning of "."
4223      * and "~" causes trouble. */
4224     sprintf((char *)pat, vim_iswordp(ptr) ? "\\V\\<%.*s\\>" : "\\V%.*s",
4225 								    len, ptr);
4226     old_pos = curwin->w_cursor;
4227     save_p_ws = p_ws;
4228     save_p_scs = p_scs;
4229     p_ws = FALSE;	/* don't wrap around end of file now */
4230     p_scs = FALSE;	/* don't switch ignorecase off now */
4231 
4232     /*
4233      * With "gD" go to line 1.
4234      * With "gd" Search back for the start of the current function, then go
4235      * back until a blank line.  If this fails go to line 1.
4236      */
4237     if (!locally || !findpar(&incll, BACKWARD, 1L, '{', FALSE))
4238     {
4239 	setpcmark();			/* Set in findpar() otherwise */
4240 	curwin->w_cursor.lnum = 1;
4241 	par_pos = curwin->w_cursor;
4242     }
4243     else
4244     {
4245 	par_pos = curwin->w_cursor;
4246 	while (curwin->w_cursor.lnum > 1 && *skipwhite(ml_get_curline()) != NUL)
4247 	    --curwin->w_cursor.lnum;
4248     }
4249     curwin->w_cursor.col = 0;
4250 
4251     /* Search forward for the identifier, ignore comment lines. */
4252     CLEAR_POS(&found_pos);
4253     for (;;)
4254     {
4255 	t = searchit(curwin, curbuf, &curwin->w_cursor, NULL, FORWARD,
4256 		       pat, 1L, searchflags, RE_LAST, (linenr_T)0, NULL, NULL);
4257 	if (curwin->w_cursor.lnum >= old_pos.lnum)
4258 	    t = FAIL;	/* match after start is failure too */
4259 
4260 	if (thisblock && t != FAIL)
4261 	{
4262 	    pos_T	*pos;
4263 
4264 	    /* Check that the block the match is in doesn't end before the
4265 	     * position where we started the search from. */
4266 	    if ((pos = findmatchlimit(NULL, '}', FM_FORWARD,
4267 		     (int)(old_pos.lnum - curwin->w_cursor.lnum + 1))) != NULL
4268 		    && pos->lnum < old_pos.lnum)
4269 	    {
4270 		/* There can't be a useful match before the end of this block.
4271 		 * Skip to the end. */
4272 		curwin->w_cursor = *pos;
4273 		continue;
4274 	    }
4275 	}
4276 
4277 	if (t == FAIL)
4278 	{
4279 	    /* If we previously found a valid position, use it. */
4280 	    if (found_pos.lnum != 0)
4281 	    {
4282 		curwin->w_cursor = found_pos;
4283 		t = OK;
4284 	    }
4285 	    break;
4286 	}
4287 #ifdef FEAT_COMMENTS
4288 	if (get_leader_len(ml_get_curline(), NULL, FALSE, TRUE) > 0)
4289 	{
4290 	    /* Ignore this line, continue at start of next line. */
4291 	    ++curwin->w_cursor.lnum;
4292 	    curwin->w_cursor.col = 0;
4293 	    continue;
4294 	}
4295 #endif
4296 	valid = is_ident(ml_get_curline(), curwin->w_cursor.col);
4297 
4298 	/* If the current position is not a valid identifier and a previous
4299 	 * match is present, favor that one instead. */
4300 	if (!valid && found_pos.lnum != 0)
4301 	{
4302 	    curwin->w_cursor = found_pos;
4303 	    break;
4304 	}
4305 
4306 	/* Global search: use first valid match found */
4307 	if (valid && !locally)
4308 	    break;
4309 	if (valid && curwin->w_cursor.lnum >= par_pos.lnum)
4310 	{
4311 	    /* If we previously found a valid position, use it. */
4312 	    if (found_pos.lnum != 0)
4313 		curwin->w_cursor = found_pos;
4314 	    break;
4315 	}
4316 
4317 	/* For finding a local variable and the match is before the "{" or
4318 	 * inside a comment, continue searching.  For K&R style function
4319 	 * declarations this skips the function header without types. */
4320 	if (!valid)
4321 	    CLEAR_POS(&found_pos);
4322 	else
4323 	    found_pos = curwin->w_cursor;
4324 	/* Remove SEARCH_START from flags to avoid getting stuck at one
4325 	 * position. */
4326 	searchflags &= ~SEARCH_START;
4327     }
4328 
4329     if (t == FAIL)
4330     {
4331 	retval = FAIL;
4332 	curwin->w_cursor = old_pos;
4333     }
4334     else
4335     {
4336 	curwin->w_set_curswant = TRUE;
4337 	/* "n" searches forward now */
4338 	reset_search_dir();
4339     }
4340 
4341     vim_free(pat);
4342     p_ws = save_p_ws;
4343     p_scs = save_p_scs;
4344 
4345     return retval;
4346 }
4347 
4348 /*
4349  * Move 'dist' lines in direction 'dir', counting lines by *screen*
4350  * lines rather than lines in the file.
4351  * 'dist' must be positive.
4352  *
4353  * Return OK if able to move cursor, FAIL otherwise.
4354  */
4355     static int
4356 nv_screengo(oparg_T *oap, int dir, long dist)
4357 {
4358     int		linelen = linetabsize(ml_get_curline());
4359     int		retval = OK;
4360     int		atend = FALSE;
4361     int		n;
4362     int		col_off1;	/* margin offset for first screen line */
4363     int		col_off2;	/* margin offset for wrapped screen line */
4364     int		width1;		/* text width for first screen line */
4365     int		width2;		/* test width for wrapped screen line */
4366 
4367     oap->motion_type = MCHAR;
4368     oap->inclusive = (curwin->w_curswant == MAXCOL);
4369 
4370     col_off1 = curwin_col_off();
4371     col_off2 = col_off1 - curwin_col_off2();
4372     width1 = curwin->w_width - col_off1;
4373     width2 = curwin->w_width - col_off2;
4374     if (width2 == 0)
4375 	width2 = 1; /* avoid divide by zero */
4376 
4377     if (curwin->w_width != 0)
4378     {
4379       /*
4380        * Instead of sticking at the last character of the buffer line we
4381        * try to stick in the last column of the screen.
4382        */
4383       if (curwin->w_curswant == MAXCOL)
4384       {
4385 	atend = TRUE;
4386 	validate_virtcol();
4387 	if (width1 <= 0)
4388 	    curwin->w_curswant = 0;
4389 	else
4390 	{
4391 	    curwin->w_curswant = width1 - 1;
4392 	    if (curwin->w_virtcol > curwin->w_curswant)
4393 		curwin->w_curswant += ((curwin->w_virtcol
4394 			     - curwin->w_curswant - 1) / width2 + 1) * width2;
4395 	}
4396       }
4397       else
4398       {
4399 	if (linelen > width1)
4400 	    n = ((linelen - width1 - 1) / width2 + 1) * width2 + width1;
4401 	else
4402 	    n = width1;
4403 	if (curwin->w_curswant > (colnr_T)n + 1)
4404 	    curwin->w_curswant -= ((curwin->w_curswant - n) / width2 + 1)
4405 								     * width2;
4406       }
4407 
4408       while (dist--)
4409       {
4410 	if (dir == BACKWARD)
4411 	{
4412 	    if ((long)curwin->w_curswant >= width2)
4413 		/* move back within line */
4414 		curwin->w_curswant -= width2;
4415 	    else
4416 	    {
4417 		/* to previous line */
4418 		if (curwin->w_cursor.lnum == 1)
4419 		{
4420 		    retval = FAIL;
4421 		    break;
4422 		}
4423 		--curwin->w_cursor.lnum;
4424 #ifdef FEAT_FOLDING
4425 		/* Move to the start of a closed fold.  Don't do that when
4426 		 * 'foldopen' contains "all": it will open in a moment. */
4427 		if (!(fdo_flags & FDO_ALL))
4428 		    (void)hasFolding(curwin->w_cursor.lnum,
4429 						&curwin->w_cursor.lnum, NULL);
4430 #endif
4431 		linelen = linetabsize(ml_get_curline());
4432 		if (linelen > width1)
4433 		    curwin->w_curswant += (((linelen - width1 - 1) / width2)
4434 								+ 1) * width2;
4435 	    }
4436 	}
4437 	else /* dir == FORWARD */
4438 	{
4439 	    if (linelen > width1)
4440 		n = ((linelen - width1 - 1) / width2 + 1) * width2 + width1;
4441 	    else
4442 		n = width1;
4443 	    if (curwin->w_curswant + width2 < (colnr_T)n)
4444 		/* move forward within line */
4445 		curwin->w_curswant += width2;
4446 	    else
4447 	    {
4448 		/* to next line */
4449 #ifdef FEAT_FOLDING
4450 		/* Move to the end of a closed fold. */
4451 		(void)hasFolding(curwin->w_cursor.lnum, NULL,
4452 						      &curwin->w_cursor.lnum);
4453 #endif
4454 		if (curwin->w_cursor.lnum == curbuf->b_ml.ml_line_count)
4455 		{
4456 		    retval = FAIL;
4457 		    break;
4458 		}
4459 		curwin->w_cursor.lnum++;
4460 		curwin->w_curswant %= width2;
4461 		linelen = linetabsize(ml_get_curline());
4462 	    }
4463 	}
4464       }
4465     }
4466 
4467     if (virtual_active() && atend)
4468 	coladvance(MAXCOL);
4469     else
4470 	coladvance(curwin->w_curswant);
4471 
4472     if (curwin->w_cursor.col > 0 && curwin->w_p_wrap)
4473     {
4474 	colnr_T virtcol;
4475 
4476 	/*
4477 	 * Check for landing on a character that got split at the end of the
4478 	 * last line.  We want to advance a screenline, not end up in the same
4479 	 * screenline or move two screenlines.
4480 	 */
4481 	validate_virtcol();
4482 	virtcol = curwin->w_virtcol;
4483 #if defined(FEAT_LINEBREAK)
4484 	if (virtcol > (colnr_T)width1 && *p_sbr != NUL)
4485 	    virtcol -= vim_strsize(p_sbr);
4486 #endif
4487 
4488 	if (virtcol > curwin->w_curswant
4489 		&& (curwin->w_curswant < (colnr_T)width1
4490 		    ? (curwin->w_curswant > (colnr_T)width1 / 2)
4491 		    : ((curwin->w_curswant - width1) % width2
4492 						      > (colnr_T)width2 / 2)))
4493 	    --curwin->w_cursor.col;
4494     }
4495 
4496     if (atend)
4497 	curwin->w_curswant = MAXCOL;	    /* stick in the last column */
4498 
4499     return retval;
4500 }
4501 
4502 #ifdef FEAT_MOUSE
4503 /*
4504  * Mouse scroll wheel: Default action is to scroll three lines, or one page
4505  * when Shift or Ctrl is used.
4506  * K_MOUSEUP (cap->arg == 1) or K_MOUSEDOWN (cap->arg == 0) or
4507  * K_MOUSELEFT (cap->arg == -1) or K_MOUSERIGHT (cap->arg == -2)
4508  */
4509     static void
4510 nv_mousescroll(cmdarg_T *cap)
4511 {
4512     win_T *old_curwin = curwin, *wp;
4513 
4514     if (mouse_row >= 0 && mouse_col >= 0)
4515     {
4516 	int row, col;
4517 
4518 	row = mouse_row;
4519 	col = mouse_col;
4520 
4521 	/* find the window at the pointer coordinates */
4522 	wp = mouse_find_win(&row, &col);
4523 	if (wp == NULL)
4524 	    return;
4525 	curwin = wp;
4526 	curbuf = curwin->w_buffer;
4527     }
4528 
4529     if (cap->arg == MSCR_UP || cap->arg == MSCR_DOWN)
4530     {
4531 # ifdef FEAT_TERMINAL
4532 	if (term_use_loop())
4533 	    /* This window is a terminal window, send the mouse event there.
4534 	     * Set "typed" to FALSE to avoid an endless loop. */
4535 	    send_keys_to_term(curbuf->b_term, cap->cmdchar, FALSE);
4536 	else
4537 # endif
4538 	if (mod_mask & (MOD_MASK_SHIFT | MOD_MASK_CTRL))
4539 	{
4540 	    (void)onepage(cap->arg ? FORWARD : BACKWARD, 1L);
4541 	}
4542 	else
4543 	{
4544 	    cap->count1 = 3;
4545 	    cap->count0 = 3;
4546 	    nv_scroll_line(cap);
4547 	}
4548     }
4549 # ifdef FEAT_GUI
4550     else
4551     {
4552 	/* Horizontal scroll - only allowed when 'wrap' is disabled */
4553 	if (!curwin->w_p_wrap)
4554 	{
4555 	    int val, step = 6;
4556 
4557 	    if (mod_mask & (MOD_MASK_SHIFT | MOD_MASK_CTRL))
4558 		step = curwin->w_width;
4559 	    val = curwin->w_leftcol + (cap->arg == MSCR_RIGHT ? -step : +step);
4560 	    if (val < 0)
4561 		val = 0;
4562 
4563 	    gui_do_horiz_scroll(val, TRUE);
4564 	}
4565     }
4566 # endif
4567 # ifdef FEAT_SYN_HL
4568     if (curwin != old_curwin && curwin->w_p_cul)
4569 	redraw_for_cursorline(curwin);
4570 # endif
4571 
4572     curwin->w_redr_status = TRUE;
4573 
4574     curwin = old_curwin;
4575     curbuf = curwin->w_buffer;
4576 }
4577 
4578 /*
4579  * Mouse clicks and drags.
4580  */
4581     static void
4582 nv_mouse(cmdarg_T *cap)
4583 {
4584     (void)do_mouse(cap->oap, cap->cmdchar, BACKWARD, cap->count1, 0);
4585 }
4586 #endif
4587 
4588 /*
4589  * Handle CTRL-E and CTRL-Y commands: scroll a line up or down.
4590  * cap->arg must be TRUE for CTRL-E.
4591  */
4592     static void
4593 nv_scroll_line(cmdarg_T *cap)
4594 {
4595     if (!checkclearop(cap->oap))
4596 	scroll_redraw(cap->arg, cap->count1);
4597 }
4598 
4599 /*
4600  * Scroll "count" lines up or down, and redraw.
4601  */
4602     void
4603 scroll_redraw(int up, long count)
4604 {
4605     linenr_T	prev_topline = curwin->w_topline;
4606 #ifdef FEAT_DIFF
4607     int		prev_topfill = curwin->w_topfill;
4608 #endif
4609     linenr_T	prev_lnum = curwin->w_cursor.lnum;
4610 
4611     if (up)
4612 	scrollup(count, TRUE);
4613     else
4614 	scrolldown(count, TRUE);
4615     if (get_scrolloff_value())
4616     {
4617 	/* Adjust the cursor position for 'scrolloff'.  Mark w_topline as
4618 	 * valid, otherwise the screen jumps back at the end of the file. */
4619 	cursor_correct();
4620 	check_cursor_moved(curwin);
4621 	curwin->w_valid |= VALID_TOPLINE;
4622 
4623 	/* If moved back to where we were, at least move the cursor, otherwise
4624 	 * we get stuck at one position.  Don't move the cursor up if the
4625 	 * first line of the buffer is already on the screen */
4626 	while (curwin->w_topline == prev_topline
4627 #ifdef FEAT_DIFF
4628 		&& curwin->w_topfill == prev_topfill
4629 #endif
4630 		)
4631 	{
4632 	    if (up)
4633 	    {
4634 		if (curwin->w_cursor.lnum > prev_lnum
4635 			|| cursor_down(1L, FALSE) == FAIL)
4636 		    break;
4637 	    }
4638 	    else
4639 	    {
4640 		if (curwin->w_cursor.lnum < prev_lnum
4641 			|| prev_topline == 1L
4642 			|| cursor_up(1L, FALSE) == FAIL)
4643 		    break;
4644 	    }
4645 	    /* Mark w_topline as valid, otherwise the screen jumps back at the
4646 	     * end of the file. */
4647 	    check_cursor_moved(curwin);
4648 	    curwin->w_valid |= VALID_TOPLINE;
4649 	}
4650     }
4651     if (curwin->w_cursor.lnum != prev_lnum)
4652 	coladvance(curwin->w_curswant);
4653     redraw_later(VALID);
4654 }
4655 
4656 /*
4657  * Commands that start with "z".
4658  */
4659     static void
4660 nv_zet(cmdarg_T *cap)
4661 {
4662     long	n;
4663     colnr_T	col;
4664     int		nchar = cap->nchar;
4665 #ifdef FEAT_FOLDING
4666     long	old_fdl = curwin->w_p_fdl;
4667     int		old_fen = curwin->w_p_fen;
4668 #endif
4669 #ifdef FEAT_SPELL
4670     int		undo = FALSE;
4671 #endif
4672     long        siso = get_sidescrolloff_value();
4673 
4674     if (VIM_ISDIGIT(nchar))
4675     {
4676 	/*
4677 	 * "z123{nchar}": edit the count before obtaining {nchar}
4678 	 */
4679 	if (checkclearop(cap->oap))
4680 	    return;
4681 	n = nchar - '0';
4682 	for (;;)
4683 	{
4684 #ifdef USE_ON_FLY_SCROLL
4685 	    dont_scroll = TRUE;		/* disallow scrolling here */
4686 #endif
4687 	    ++no_mapping;
4688 	    ++allow_keys;   /* no mapping for nchar, but allow key codes */
4689 	    nchar = plain_vgetc();
4690 	    LANGMAP_ADJUST(nchar, TRUE);
4691 	    --no_mapping;
4692 	    --allow_keys;
4693 #ifdef FEAT_CMDL_INFO
4694 	    (void)add_to_showcmd(nchar);
4695 #endif
4696 	    if (nchar == K_DEL || nchar == K_KDEL)
4697 		n /= 10;
4698 	    else if (VIM_ISDIGIT(nchar))
4699 		n = n * 10 + (nchar - '0');
4700 	    else if (nchar == CAR)
4701 	    {
4702 #ifdef FEAT_GUI
4703 		need_mouse_correct = TRUE;
4704 #endif
4705 		win_setheight((int)n);
4706 		break;
4707 	    }
4708 	    else if (nchar == 'l'
4709 		    || nchar == 'h'
4710 		    || nchar == K_LEFT
4711 		    || nchar == K_RIGHT)
4712 	    {
4713 		cap->count1 = n ? n * cap->count1 : cap->count1;
4714 		goto dozet;
4715 	    }
4716 	    else
4717 	    {
4718 		clearopbeep(cap->oap);
4719 		break;
4720 	    }
4721 	}
4722 	cap->oap->op_type = OP_NOP;
4723 	return;
4724     }
4725 
4726 dozet:
4727     if (
4728 #ifdef FEAT_FOLDING
4729 	    /* "zf" and "zF" are always an operator, "zd", "zo", "zO", "zc"
4730 	     * and "zC" only in Visual mode.  "zj" and "zk" are motion
4731 	     * commands. */
4732 	    cap->nchar != 'f' && cap->nchar != 'F'
4733 	    && !(VIsual_active && vim_strchr((char_u *)"dcCoO", cap->nchar))
4734 	    && cap->nchar != 'j' && cap->nchar != 'k'
4735 	    &&
4736 #endif
4737 	    checkclearop(cap->oap))
4738 	return;
4739 
4740     /*
4741      * For "z+", "z<CR>", "zt", "z.", "zz", "z^", "z-", "zb":
4742      * If line number given, set cursor.
4743      */
4744     if ((vim_strchr((char_u *)"+\r\nt.z^-b", nchar) != NULL)
4745 	    && cap->count0
4746 	    && cap->count0 != curwin->w_cursor.lnum)
4747     {
4748 	setpcmark();
4749 	if (cap->count0 > curbuf->b_ml.ml_line_count)
4750 	    curwin->w_cursor.lnum = curbuf->b_ml.ml_line_count;
4751 	else
4752 	    curwin->w_cursor.lnum = cap->count0;
4753 	check_cursor_col();
4754     }
4755 
4756     switch (nchar)
4757     {
4758 		/* "z+", "z<CR>" and "zt": put cursor at top of screen */
4759     case '+':
4760 		if (cap->count0 == 0)
4761 		{
4762 		    /* No count given: put cursor at the line below screen */
4763 		    validate_botline();	/* make sure w_botline is valid */
4764 		    if (curwin->w_botline > curbuf->b_ml.ml_line_count)
4765 			curwin->w_cursor.lnum = curbuf->b_ml.ml_line_count;
4766 		    else
4767 			curwin->w_cursor.lnum = curwin->w_botline;
4768 		}
4769 		/* FALLTHROUGH */
4770     case NL:
4771     case CAR:
4772     case K_KENTER:
4773 		beginline(BL_WHITE | BL_FIX);
4774 		/* FALLTHROUGH */
4775 
4776     case 't':	scroll_cursor_top(0, TRUE);
4777 		redraw_later(VALID);
4778 		set_fraction(curwin);
4779 		break;
4780 
4781 		/* "z." and "zz": put cursor in middle of screen */
4782     case '.':	beginline(BL_WHITE | BL_FIX);
4783 		/* FALLTHROUGH */
4784 
4785     case 'z':	scroll_cursor_halfway(TRUE);
4786 		redraw_later(VALID);
4787 		set_fraction(curwin);
4788 		break;
4789 
4790 		/* "z^", "z-" and "zb": put cursor at bottom of screen */
4791     case '^':	/* Strange Vi behavior: <count>z^ finds line at top of window
4792 		 * when <count> is at bottom of window, and puts that one at
4793 		 * bottom of window. */
4794 		if (cap->count0 != 0)
4795 		{
4796 		    scroll_cursor_bot(0, TRUE);
4797 		    curwin->w_cursor.lnum = curwin->w_topline;
4798 		}
4799 		else if (curwin->w_topline == 1)
4800 		    curwin->w_cursor.lnum = 1;
4801 		else
4802 		    curwin->w_cursor.lnum = curwin->w_topline - 1;
4803 		/* FALLTHROUGH */
4804     case '-':
4805 		beginline(BL_WHITE | BL_FIX);
4806 		/* FALLTHROUGH */
4807 
4808     case 'b':	scroll_cursor_bot(0, TRUE);
4809 		redraw_later(VALID);
4810 		set_fraction(curwin);
4811 		break;
4812 
4813 		/* "zH" - scroll screen right half-page */
4814     case 'H':
4815 		cap->count1 *= curwin->w_width / 2;
4816 		/* FALLTHROUGH */
4817 
4818 		/* "zh" - scroll screen to the right */
4819     case 'h':
4820     case K_LEFT:
4821 		if (!curwin->w_p_wrap)
4822 		{
4823 		    if ((colnr_T)cap->count1 > curwin->w_leftcol)
4824 			curwin->w_leftcol = 0;
4825 		    else
4826 			curwin->w_leftcol -= (colnr_T)cap->count1;
4827 		    leftcol_changed();
4828 		}
4829 		break;
4830 
4831 		/* "zL" - scroll screen left half-page */
4832     case 'L':	cap->count1 *= curwin->w_width / 2;
4833 		/* FALLTHROUGH */
4834 
4835 		/* "zl" - scroll screen to the left */
4836     case 'l':
4837     case K_RIGHT:
4838 		if (!curwin->w_p_wrap)
4839 		{
4840 		    /* scroll the window left */
4841 		    curwin->w_leftcol += (colnr_T)cap->count1;
4842 		    leftcol_changed();
4843 		}
4844 		break;
4845 
4846 		/* "zs" - scroll screen, cursor at the start */
4847     case 's':	if (!curwin->w_p_wrap)
4848 		{
4849 #ifdef FEAT_FOLDING
4850 		    if (hasFolding(curwin->w_cursor.lnum, NULL, NULL))
4851 			col = 0;	/* like the cursor is in col 0 */
4852 		    else
4853 #endif
4854 		    getvcol(curwin, &curwin->w_cursor, &col, NULL, NULL);
4855 		    if ((long)col > siso)
4856 			col -= siso;
4857 		    else
4858 			col = 0;
4859 		    if (curwin->w_leftcol != col)
4860 		    {
4861 			curwin->w_leftcol = col;
4862 			redraw_later(NOT_VALID);
4863 		    }
4864 		}
4865 		break;
4866 
4867 		/* "ze" - scroll screen, cursor at the end */
4868     case 'e':	if (!curwin->w_p_wrap)
4869 		{
4870 #ifdef FEAT_FOLDING
4871 		    if (hasFolding(curwin->w_cursor.lnum, NULL, NULL))
4872 			col = 0;	/* like the cursor is in col 0 */
4873 		    else
4874 #endif
4875 		    getvcol(curwin, &curwin->w_cursor, NULL, NULL, &col);
4876 		    n = curwin->w_width - curwin_col_off();
4877 		    if ((long)col + siso < n)
4878 			col = 0;
4879 		    else
4880 			col = col + siso - n + 1;
4881 		    if (curwin->w_leftcol != col)
4882 		    {
4883 			curwin->w_leftcol = col;
4884 			redraw_later(NOT_VALID);
4885 		    }
4886 		}
4887 		break;
4888 
4889 #ifdef FEAT_FOLDING
4890 		/* "zF": create fold command */
4891 		/* "zf": create fold operator */
4892     case 'F':
4893     case 'f':   if (foldManualAllowed(TRUE))
4894 		{
4895 		    cap->nchar = 'f';
4896 		    nv_operator(cap);
4897 		    curwin->w_p_fen = TRUE;
4898 
4899 		    /* "zF" is like "zfzf" */
4900 		    if (nchar == 'F' && cap->oap->op_type == OP_FOLD)
4901 		    {
4902 			nv_operator(cap);
4903 			finish_op = TRUE;
4904 		    }
4905 		}
4906 		else
4907 		    clearopbeep(cap->oap);
4908 		break;
4909 
4910 		/* "zd": delete fold at cursor */
4911 		/* "zD": delete fold at cursor recursively */
4912     case 'd':
4913     case 'D':	if (foldManualAllowed(FALSE))
4914 		{
4915 		    if (VIsual_active)
4916 			nv_operator(cap);
4917 		    else
4918 			deleteFold(curwin->w_cursor.lnum,
4919 				  curwin->w_cursor.lnum, nchar == 'D', FALSE);
4920 		}
4921 		break;
4922 
4923 		/* "zE": erase all folds */
4924     case 'E':	if (foldmethodIsManual(curwin))
4925 		{
4926 		    clearFolding(curwin);
4927 		    changed_window_setting();
4928 		}
4929 		else if (foldmethodIsMarker(curwin))
4930 		    deleteFold((linenr_T)1, curbuf->b_ml.ml_line_count,
4931 								 TRUE, FALSE);
4932 		else
4933 		    emsg(_("E352: Cannot erase folds with current 'foldmethod'"));
4934 		break;
4935 
4936 		/* "zn": fold none: reset 'foldenable' */
4937     case 'n':	curwin->w_p_fen = FALSE;
4938 		break;
4939 
4940 		/* "zN": fold Normal: set 'foldenable' */
4941     case 'N':	curwin->w_p_fen = TRUE;
4942 		break;
4943 
4944 		/* "zi": invert folding: toggle 'foldenable' */
4945     case 'i':	curwin->w_p_fen = !curwin->w_p_fen;
4946 		break;
4947 
4948 		/* "za": open closed fold or close open fold at cursor */
4949     case 'a':	if (hasFolding(curwin->w_cursor.lnum, NULL, NULL))
4950 		    openFold(curwin->w_cursor.lnum, cap->count1);
4951 		else
4952 		{
4953 		    closeFold(curwin->w_cursor.lnum, cap->count1);
4954 		    curwin->w_p_fen = TRUE;
4955 		}
4956 		break;
4957 
4958 		/* "zA": open fold at cursor recursively */
4959     case 'A':	if (hasFolding(curwin->w_cursor.lnum, NULL, NULL))
4960 		    openFoldRecurse(curwin->w_cursor.lnum);
4961 		else
4962 		{
4963 		    closeFoldRecurse(curwin->w_cursor.lnum);
4964 		    curwin->w_p_fen = TRUE;
4965 		}
4966 		break;
4967 
4968 		/* "zo": open fold at cursor or Visual area */
4969     case 'o':	if (VIsual_active)
4970 		    nv_operator(cap);
4971 		else
4972 		    openFold(curwin->w_cursor.lnum, cap->count1);
4973 		break;
4974 
4975 		/* "zO": open fold recursively */
4976     case 'O':	if (VIsual_active)
4977 		    nv_operator(cap);
4978 		else
4979 		    openFoldRecurse(curwin->w_cursor.lnum);
4980 		break;
4981 
4982 		/* "zc": close fold at cursor or Visual area */
4983     case 'c':	if (VIsual_active)
4984 		    nv_operator(cap);
4985 		else
4986 		    closeFold(curwin->w_cursor.lnum, cap->count1);
4987 		curwin->w_p_fen = TRUE;
4988 		break;
4989 
4990 		/* "zC": close fold recursively */
4991     case 'C':	if (VIsual_active)
4992 		    nv_operator(cap);
4993 		else
4994 		    closeFoldRecurse(curwin->w_cursor.lnum);
4995 		curwin->w_p_fen = TRUE;
4996 		break;
4997 
4998 		/* "zv": open folds at the cursor */
4999     case 'v':	foldOpenCursor();
5000 		break;
5001 
5002 		/* "zx": re-apply 'foldlevel' and open folds at the cursor */
5003     case 'x':	curwin->w_p_fen = TRUE;
5004 		curwin->w_foldinvalid = TRUE;	/* recompute folds */
5005 		newFoldLevel();			/* update right now */
5006 		foldOpenCursor();
5007 		break;
5008 
5009 		/* "zX": undo manual opens/closes, re-apply 'foldlevel' */
5010     case 'X':	curwin->w_p_fen = TRUE;
5011 		curwin->w_foldinvalid = TRUE;	/* recompute folds */
5012 		old_fdl = -1;			/* force an update */
5013 		break;
5014 
5015 		/* "zm": fold more */
5016     case 'm':	if (curwin->w_p_fdl > 0)
5017 		{
5018 		    curwin->w_p_fdl -= cap->count1;
5019 		    if (curwin->w_p_fdl < 0)
5020 			curwin->w_p_fdl = 0;
5021 		}
5022 		old_fdl = -1;		/* force an update */
5023 		curwin->w_p_fen = TRUE;
5024 		break;
5025 
5026 		/* "zM": close all folds */
5027     case 'M':	curwin->w_p_fdl = 0;
5028 		old_fdl = -1;		/* force an update */
5029 		curwin->w_p_fen = TRUE;
5030 		break;
5031 
5032 		/* "zr": reduce folding */
5033     case 'r':	curwin->w_p_fdl += cap->count1;
5034 		{
5035 		    int d = getDeepestNesting();
5036 
5037 		    if (curwin->w_p_fdl >= d)
5038 			curwin->w_p_fdl = d;
5039 		}
5040 		break;
5041 
5042 		/* "zR": open all folds */
5043     case 'R':	curwin->w_p_fdl = getDeepestNesting();
5044 		old_fdl = -1;		/* force an update */
5045 		break;
5046 
5047     case 'j':	/* "zj" move to next fold downwards */
5048     case 'k':	/* "zk" move to next fold upwards */
5049 		if (foldMoveTo(TRUE, nchar == 'j' ? FORWARD : BACKWARD,
5050 							  cap->count1) == FAIL)
5051 		    clearopbeep(cap->oap);
5052 		break;
5053 
5054 #endif /* FEAT_FOLDING */
5055 
5056 #ifdef FEAT_SPELL
5057     case 'u':	/* "zug" and "zuw": undo "zg" and "zw" */
5058 		++no_mapping;
5059 		++allow_keys;   /* no mapping for nchar, but allow key codes */
5060 		nchar = plain_vgetc();
5061 		LANGMAP_ADJUST(nchar, TRUE);
5062 		--no_mapping;
5063 		--allow_keys;
5064 #ifdef FEAT_CMDL_INFO
5065 		(void)add_to_showcmd(nchar);
5066 #endif
5067 		if (vim_strchr((char_u *)"gGwW", nchar) == NULL)
5068 		{
5069 		    clearopbeep(cap->oap);
5070 		    break;
5071 		}
5072 		undo = TRUE;
5073 		/* FALLTHROUGH */
5074 
5075     case 'g':	/* "zg": add good word to word list */
5076     case 'w':	/* "zw": add wrong word to word list */
5077     case 'G':	/* "zG": add good word to temp word list */
5078     case 'W':	/* "zW": add wrong word to temp word list */
5079 		{
5080 		    char_u  *ptr = NULL;
5081 		    int	    len;
5082 
5083 		    if (checkclearop(cap->oap))
5084 			break;
5085 		    if (VIsual_active && get_visual_text(cap, &ptr, &len)
5086 								      == FAIL)
5087 			return;
5088 		    if (ptr == NULL)
5089 		    {
5090 			pos_T	pos = curwin->w_cursor;
5091 
5092 			/* Find bad word under the cursor.  When 'spell' is
5093 			 * off this fails and find_ident_under_cursor() is
5094 			 * used below. */
5095 			emsg_off++;
5096 			len = spell_move_to(curwin, FORWARD, TRUE, TRUE, NULL);
5097 			emsg_off--;
5098 			if (len != 0 && curwin->w_cursor.col <= pos.col)
5099 			    ptr = ml_get_pos(&curwin->w_cursor);
5100 			curwin->w_cursor = pos;
5101 		    }
5102 
5103 		    if (ptr == NULL && (len = find_ident_under_cursor(&ptr,
5104 							    FIND_IDENT)) == 0)
5105 			return;
5106 		    spell_add_word(ptr, len, nchar == 'w' || nchar == 'W',
5107 					    (nchar == 'G' || nchar == 'W')
5108 						       ? 0 : (int)cap->count1,
5109 					    undo);
5110 		}
5111 		break;
5112 
5113     case '=':	/* "z=": suggestions for a badly spelled word  */
5114 		if (!checkclearop(cap->oap))
5115 		    spell_suggest((int)cap->count0);
5116 		break;
5117 #endif
5118 
5119     default:	clearopbeep(cap->oap);
5120     }
5121 
5122 #ifdef FEAT_FOLDING
5123     /* Redraw when 'foldenable' changed */
5124     if (old_fen != curwin->w_p_fen)
5125     {
5126 # ifdef FEAT_DIFF
5127 	win_T	    *wp;
5128 
5129 	if (foldmethodIsDiff(curwin) && curwin->w_p_scb)
5130 	{
5131 	    /* Adjust 'foldenable' in diff-synced windows. */
5132 	    FOR_ALL_WINDOWS(wp)
5133 	    {
5134 		if (wp != curwin && foldmethodIsDiff(wp) && wp->w_p_scb)
5135 		{
5136 		    wp->w_p_fen = curwin->w_p_fen;
5137 		    changed_window_setting_win(wp);
5138 		}
5139 	    }
5140 	}
5141 # endif
5142 	changed_window_setting();
5143     }
5144 
5145     /* Redraw when 'foldlevel' changed. */
5146     if (old_fdl != curwin->w_p_fdl)
5147 	newFoldLevel();
5148 #endif
5149 }
5150 
5151 #ifdef FEAT_GUI
5152 /*
5153  * Vertical scrollbar movement.
5154  */
5155     static void
5156 nv_ver_scrollbar(cmdarg_T *cap)
5157 {
5158     if (cap->oap->op_type != OP_NOP)
5159 	clearopbeep(cap->oap);
5160 
5161     /* Even if an operator was pending, we still want to scroll */
5162     gui_do_scroll();
5163 }
5164 
5165 /*
5166  * Horizontal scrollbar movement.
5167  */
5168     static void
5169 nv_hor_scrollbar(cmdarg_T *cap)
5170 {
5171     if (cap->oap->op_type != OP_NOP)
5172 	clearopbeep(cap->oap);
5173 
5174     /* Even if an operator was pending, we still want to scroll */
5175     gui_do_horiz_scroll(scrollbar_value, FALSE);
5176 }
5177 #endif
5178 
5179 #if defined(FEAT_GUI_TABLINE) || defined(PROTO)
5180 /*
5181  * Click in GUI tab.
5182  */
5183     static void
5184 nv_tabline(cmdarg_T *cap)
5185 {
5186     if (cap->oap->op_type != OP_NOP)
5187 	clearopbeep(cap->oap);
5188 
5189     /* Even if an operator was pending, we still want to jump tabs. */
5190     goto_tabpage(current_tab);
5191 }
5192 
5193 /*
5194  * Selected item in tab line menu.
5195  */
5196     static void
5197 nv_tabmenu(cmdarg_T *cap)
5198 {
5199     if (cap->oap->op_type != OP_NOP)
5200 	clearopbeep(cap->oap);
5201 
5202     /* Even if an operator was pending, we still want to jump tabs. */
5203     handle_tabmenu();
5204 }
5205 
5206 /*
5207  * Handle selecting an item of the GUI tab line menu.
5208  * Used in Normal and Insert mode.
5209  */
5210     void
5211 handle_tabmenu(void)
5212 {
5213     switch (current_tabmenu)
5214     {
5215 	case TABLINE_MENU_CLOSE:
5216 	    if (current_tab == 0)
5217 		do_cmdline_cmd((char_u *)"tabclose");
5218 	    else
5219 	    {
5220 		vim_snprintf((char *)IObuff, IOSIZE, "tabclose %d",
5221 								 current_tab);
5222 		do_cmdline_cmd(IObuff);
5223 	    }
5224 	    break;
5225 
5226 	case TABLINE_MENU_NEW:
5227 	    if (current_tab == 0)
5228 		do_cmdline_cmd((char_u *)"$tabnew");
5229 	    else
5230 	    {
5231 		vim_snprintf((char *)IObuff, IOSIZE, "%dtabnew",
5232 							     current_tab - 1);
5233 		do_cmdline_cmd(IObuff);
5234 	    }
5235 	    break;
5236 
5237 	case TABLINE_MENU_OPEN:
5238 	    if (current_tab == 0)
5239 		do_cmdline_cmd((char_u *)"browse $tabnew");
5240 	    else
5241 	    {
5242 		vim_snprintf((char *)IObuff, IOSIZE, "browse %dtabnew",
5243 							     current_tab - 1);
5244 		do_cmdline_cmd(IObuff);
5245 	    }
5246 	    break;
5247     }
5248 }
5249 #endif
5250 
5251 /*
5252  * "Q" command.
5253  */
5254     static void
5255 nv_exmode(cmdarg_T *cap)
5256 {
5257     /*
5258      * Ignore 'Q' in Visual mode, just give a beep.
5259      */
5260     if (VIsual_active)
5261 	vim_beep(BO_EX);
5262     else if (!checkclearop(cap->oap))
5263 	do_exmode(FALSE);
5264 }
5265 
5266 /*
5267  * Handle a ":" command.
5268  */
5269     static void
5270 nv_colon(cmdarg_T *cap)
5271 {
5272     int	    old_p_im;
5273     int	    cmd_result;
5274 
5275     if (VIsual_active)
5276 	nv_operator(cap);
5277     else
5278     {
5279 	if (cap->oap->op_type != OP_NOP)
5280 	{
5281 	    /* Using ":" as a movement is characterwise exclusive. */
5282 	    cap->oap->motion_type = MCHAR;
5283 	    cap->oap->inclusive = FALSE;
5284 	}
5285 	else if (cap->count0)
5286 	{
5287 	    /* translate "count:" into ":.,.+(count - 1)" */
5288 	    stuffcharReadbuff('.');
5289 	    if (cap->count0 > 1)
5290 	    {
5291 		stuffReadbuff((char_u *)",.+");
5292 		stuffnumReadbuff((long)cap->count0 - 1L);
5293 	    }
5294 	}
5295 
5296 	/* When typing, don't type below an old message */
5297 	if (KeyTyped)
5298 	    compute_cmdrow();
5299 
5300 	old_p_im = p_im;
5301 
5302 	/* get a command line and execute it */
5303 	cmd_result = do_cmdline(NULL, getexline, NULL,
5304 			    cap->oap->op_type != OP_NOP ? DOCMD_KEEPLINE : 0);
5305 
5306 	/* If 'insertmode' changed, enter or exit Insert mode */
5307 	if (p_im != old_p_im)
5308 	{
5309 	    if (p_im)
5310 		restart_edit = 'i';
5311 	    else
5312 		restart_edit = 0;
5313 	}
5314 
5315 	if (cmd_result == FAIL)
5316 	    /* The Ex command failed, do not execute the operator. */
5317 	    clearop(cap->oap);
5318 	else if (cap->oap->op_type != OP_NOP
5319 		&& (cap->oap->start.lnum > curbuf->b_ml.ml_line_count
5320 		    || cap->oap->start.col >
5321 			       (colnr_T)STRLEN(ml_get(cap->oap->start.lnum))
5322 		    || did_emsg
5323 		    ))
5324 	    /* The start of the operator has become invalid by the Ex command.
5325 	     */
5326 	    clearopbeep(cap->oap);
5327     }
5328 }
5329 
5330 /*
5331  * Handle CTRL-G command.
5332  */
5333     static void
5334 nv_ctrlg(cmdarg_T *cap)
5335 {
5336     if (VIsual_active)	/* toggle Selection/Visual mode */
5337     {
5338 	VIsual_select = !VIsual_select;
5339 	showmode();
5340     }
5341     else if (!checkclearop(cap->oap))
5342 	/* print full name if count given or :cd used */
5343 	fileinfo((int)cap->count0, FALSE, TRUE);
5344 }
5345 
5346 /*
5347  * Handle CTRL-H <Backspace> command.
5348  */
5349     static void
5350 nv_ctrlh(cmdarg_T *cap)
5351 {
5352     if (VIsual_active && VIsual_select)
5353     {
5354 	cap->cmdchar = 'x';	/* BS key behaves like 'x' in Select mode */
5355 	v_visop(cap);
5356     }
5357     else
5358 	nv_left(cap);
5359 }
5360 
5361 /*
5362  * CTRL-L: clear screen and redraw.
5363  */
5364     static void
5365 nv_clear(cmdarg_T *cap)
5366 {
5367     if (!checkclearop(cap->oap))
5368     {
5369 #if defined(__BEOS__) && !USE_THREAD_FOR_INPUT_WITH_TIMEOUT
5370 	/*
5371 	 * Right now, the BeBox doesn't seem to have an easy way to detect
5372 	 * window resizing, so we cheat and make the user detect it
5373 	 * manually with CTRL-L instead
5374 	 */
5375 	ui_get_shellsize();
5376 #endif
5377 #ifdef FEAT_SYN_HL
5378 	/* Clear all syntax states to force resyncing. */
5379 	syn_stack_free_all(curwin->w_s);
5380 # ifdef FEAT_RELTIME
5381 	{
5382 	    win_T *wp;
5383 
5384 	    FOR_ALL_WINDOWS(wp)
5385 		wp->w_s->b_syn_slow = FALSE;
5386 	}
5387 # endif
5388 #endif
5389 	redraw_later(CLEAR);
5390 #if defined(MSWIN) && (!defined(FEAT_GUI_MSWIN) || defined(VIMDLL))
5391 # ifdef VIMDLL
5392 	if (!gui.in_use)
5393 # endif
5394 	    resize_console_buf();
5395 #endif
5396     }
5397 }
5398 
5399 /*
5400  * CTRL-O: In Select mode: switch to Visual mode for one command.
5401  * Otherwise: Go to older pcmark.
5402  */
5403     static void
5404 nv_ctrlo(cmdarg_T *cap)
5405 {
5406     if (VIsual_active && VIsual_select)
5407     {
5408 	VIsual_select = FALSE;
5409 	showmode();
5410 	restart_VIsual_select = 2;	/* restart Select mode later */
5411     }
5412     else
5413     {
5414 	cap->count1 = -cap->count1;
5415 	nv_pcmark(cap);
5416     }
5417 }
5418 
5419 /*
5420  * CTRL-^ command, short for ":e #".  Works even when the alternate buffer is
5421  * not named.
5422  */
5423     static void
5424 nv_hat(cmdarg_T *cap)
5425 {
5426     if (!checkclearopq(cap->oap))
5427 	(void)buflist_getfile((int)cap->count0, (linenr_T)0,
5428 						GETF_SETMARK|GETF_ALT, FALSE);
5429 }
5430 
5431 /*
5432  * "Z" commands.
5433  */
5434     static void
5435 nv_Zet(cmdarg_T *cap)
5436 {
5437     if (!checkclearopq(cap->oap))
5438     {
5439 	switch (cap->nchar)
5440 	{
5441 			/* "ZZ": equivalent to ":x". */
5442 	    case 'Z':	do_cmdline_cmd((char_u *)"x");
5443 			break;
5444 
5445 			/* "ZQ": equivalent to ":q!" (Elvis compatible). */
5446 	    case 'Q':	do_cmdline_cmd((char_u *)"q!");
5447 			break;
5448 
5449 	    default:	clearopbeep(cap->oap);
5450 	}
5451     }
5452 }
5453 
5454 /*
5455  * Call nv_ident() as if "c1" was used, with "c2" as next character.
5456  */
5457     void
5458 do_nv_ident(int c1, int c2)
5459 {
5460     oparg_T	oa;
5461     cmdarg_T	ca;
5462 
5463     clear_oparg(&oa);
5464     vim_memset(&ca, 0, sizeof(ca));
5465     ca.oap = &oa;
5466     ca.cmdchar = c1;
5467     ca.nchar = c2;
5468     nv_ident(&ca);
5469 }
5470 
5471 /*
5472  * Handle the commands that use the word under the cursor.
5473  * [g] CTRL-]	:ta to current identifier
5474  * [g] 'K'	run program for current identifier
5475  * [g] '*'	/ to current identifier or string
5476  * [g] '#'	? to current identifier or string
5477  *  g  ']'	:tselect for current identifier
5478  */
5479     static void
5480 nv_ident(cmdarg_T *cap)
5481 {
5482     char_u	*ptr = NULL;
5483     char_u	*buf;
5484     unsigned	buflen;
5485     char_u	*newbuf;
5486     char_u	*p;
5487     char_u	*kp;		/* value of 'keywordprg' */
5488     int		kp_help;	/* 'keywordprg' is ":he" */
5489     int		kp_ex;		/* 'keywordprg' starts with ":" */
5490     int		n = 0;		/* init for GCC */
5491     int		cmdchar;
5492     int		g_cmd;		/* "g" command */
5493     int		tag_cmd = FALSE;
5494     char_u	*aux_ptr;
5495     int		isman;
5496     int		isman_s;
5497 
5498     if (cap->cmdchar == 'g')	/* "g*", "g#", "g]" and "gCTRL-]" */
5499     {
5500 	cmdchar = cap->nchar;
5501 	g_cmd = TRUE;
5502     }
5503     else
5504     {
5505 	cmdchar = cap->cmdchar;
5506 	g_cmd = FALSE;
5507     }
5508 
5509     if (cmdchar == POUND)	/* the pound sign, '#' for English keyboards */
5510 	cmdchar = '#';
5511 
5512     /*
5513      * The "]", "CTRL-]" and "K" commands accept an argument in Visual mode.
5514      */
5515     if (cmdchar == ']' || cmdchar == Ctrl_RSB || cmdchar == 'K')
5516     {
5517 	if (VIsual_active && get_visual_text(cap, &ptr, &n) == FAIL)
5518 	    return;
5519 	if (checkclearopq(cap->oap))
5520 	    return;
5521     }
5522 
5523     if (ptr == NULL && (n = find_ident_under_cursor(&ptr,
5524 		    (cmdchar == '*' || cmdchar == '#')
5525 				 ? FIND_IDENT|FIND_STRING : FIND_IDENT)) == 0)
5526     {
5527 	clearop(cap->oap);
5528 	return;
5529     }
5530 
5531     /* Allocate buffer to put the command in.  Inserting backslashes can
5532      * double the length of the word.  p_kp / curbuf->b_p_kp could be added
5533      * and some numbers. */
5534     kp = (*curbuf->b_p_kp == NUL ? p_kp : curbuf->b_p_kp);
5535     kp_help = (*kp == NUL || STRCMP(kp, ":he") == 0
5536 						 || STRCMP(kp, ":help") == 0);
5537     if (kp_help && *skipwhite(ptr) == NUL)
5538     {
5539 	emsg(_(e_noident));	 /* found white space only */
5540 	return;
5541     }
5542     kp_ex = (*kp == ':');
5543     buflen = (unsigned)(n * 2 + 30 + STRLEN(kp));
5544     buf = alloc(buflen);
5545     if (buf == NULL)
5546 	return;
5547     buf[0] = NUL;
5548 
5549     switch (cmdchar)
5550     {
5551 	case '*':
5552 	case '#':
5553 	    /*
5554 	     * Put cursor at start of word, makes search skip the word
5555 	     * under the cursor.
5556 	     * Call setpcmark() first, so "*``" puts the cursor back where
5557 	     * it was.
5558 	     */
5559 	    setpcmark();
5560 	    curwin->w_cursor.col = (colnr_T) (ptr - ml_get_curline());
5561 
5562 	    if (!g_cmd && vim_iswordp(ptr))
5563 		STRCPY(buf, "\\<");
5564 	    no_smartcase = TRUE;	/* don't use 'smartcase' now */
5565 	    break;
5566 
5567 	case 'K':
5568 	    if (kp_help)
5569 		STRCPY(buf, "he! ");
5570 	    else if (kp_ex)
5571 	    {
5572 		if (cap->count0 != 0)
5573 		    vim_snprintf((char *)buf, buflen, "%s %ld",
5574 							     kp, cap->count0);
5575 		else
5576 		    STRCPY(buf, kp);
5577 		STRCAT(buf, " ");
5578 	    }
5579 	    else
5580 	    {
5581 		/* An external command will probably use an argument starting
5582 		 * with "-" as an option.  To avoid trouble we skip the "-". */
5583 		while (*ptr == '-' && n > 0)
5584 		{
5585 		    ++ptr;
5586 		    --n;
5587 		}
5588 		if (n == 0)
5589 		{
5590 		    emsg(_(e_noident));	 /* found dashes only */
5591 		    vim_free(buf);
5592 		    return;
5593 		}
5594 
5595 		/* When a count is given, turn it into a range.  Is this
5596 		 * really what we want? */
5597 		isman = (STRCMP(kp, "man") == 0);
5598 		isman_s = (STRCMP(kp, "man -s") == 0);
5599 		if (cap->count0 != 0 && !(isman || isman_s))
5600 		    sprintf((char *)buf, ".,.+%ld", cap->count0 - 1);
5601 
5602 		STRCAT(buf, "! ");
5603 		if (cap->count0 == 0 && isman_s)
5604 		    STRCAT(buf, "man");
5605 		else
5606 		    STRCAT(buf, kp);
5607 		STRCAT(buf, " ");
5608 		if (cap->count0 != 0 && (isman || isman_s))
5609 		{
5610 		    sprintf((char *)buf + STRLEN(buf), "%ld", cap->count0);
5611 		    STRCAT(buf, " ");
5612 		}
5613 	    }
5614 	    break;
5615 
5616 	case ']':
5617 	    tag_cmd = TRUE;
5618 #ifdef FEAT_CSCOPE
5619 	    if (p_cst)
5620 		STRCPY(buf, "cstag ");
5621 	    else
5622 #endif
5623 		STRCPY(buf, "ts ");
5624 	    break;
5625 
5626 	default:
5627 	    tag_cmd = TRUE;
5628 	    if (curbuf->b_help)
5629 		STRCPY(buf, "he! ");
5630 	    else
5631 	    {
5632 		if (g_cmd)
5633 		    STRCPY(buf, "tj ");
5634 		else
5635 		    sprintf((char *)buf, "%ldta ", cap->count0);
5636 	    }
5637     }
5638 
5639     /*
5640      * Now grab the chars in the identifier
5641      */
5642     if (cmdchar == 'K' && !kp_help)
5643     {
5644 	ptr = vim_strnsave(ptr, n);
5645 	if (kp_ex)
5646 	    /* Escape the argument properly for an Ex command */
5647 	    p = vim_strsave_fnameescape(ptr, FALSE);
5648 	else
5649 	    /* Escape the argument properly for a shell command */
5650 	    p = vim_strsave_shellescape(ptr, TRUE, TRUE);
5651 	vim_free(ptr);
5652 	if (p == NULL)
5653 	{
5654 	    vim_free(buf);
5655 	    return;
5656 	}
5657 	newbuf = (char_u *)vim_realloc(buf, STRLEN(buf) + STRLEN(p) + 1);
5658 	if (newbuf == NULL)
5659 	{
5660 	    vim_free(buf);
5661 	    vim_free(p);
5662 	    return;
5663 	}
5664 	buf = newbuf;
5665 	STRCAT(buf, p);
5666 	vim_free(p);
5667     }
5668     else
5669     {
5670 	if (cmdchar == '*')
5671 	    aux_ptr = (char_u *)(p_magic ? "/.*~[^$\\" : "/^$\\");
5672 	else if (cmdchar == '#')
5673 	    aux_ptr = (char_u *)(p_magic ? "/?.*~[^$\\" : "/?^$\\");
5674 	else if (tag_cmd)
5675 	{
5676 	    if (curbuf->b_help)
5677 		/* ":help" handles unescaped argument */
5678 		aux_ptr = (char_u *)"";
5679 	    else
5680 		aux_ptr = (char_u *)"\\|\"\n[";
5681 	}
5682 	else
5683 	    aux_ptr = (char_u *)"\\|\"\n*?[";
5684 
5685 	p = buf + STRLEN(buf);
5686 	while (n-- > 0)
5687 	{
5688 	    /* put a backslash before \ and some others */
5689 	    if (vim_strchr(aux_ptr, *ptr) != NULL)
5690 		*p++ = '\\';
5691 	    /* When current byte is a part of multibyte character, copy all
5692 	     * bytes of that character. */
5693 	    if (has_mbyte)
5694 	    {
5695 		int i;
5696 		int len = (*mb_ptr2len)(ptr) - 1;
5697 
5698 		for (i = 0; i < len && n >= 1; ++i, --n)
5699 		    *p++ = *ptr++;
5700 	    }
5701 	    *p++ = *ptr++;
5702 	}
5703 	*p = NUL;
5704     }
5705 
5706     /*
5707      * Execute the command.
5708      */
5709     if (cmdchar == '*' || cmdchar == '#')
5710     {
5711 	if (!g_cmd && (has_mbyte
5712 		    ? vim_iswordp(mb_prevptr(ml_get_curline(), ptr))
5713 		    : vim_iswordc(ptr[-1])))
5714 	    STRCAT(buf, "\\>");
5715 #ifdef FEAT_CMDHIST
5716 	/* put pattern in search history */
5717 	init_history();
5718 	add_to_history(HIST_SEARCH, buf, TRUE, NUL);
5719 #endif
5720 	(void)normal_search(cap, cmdchar == '*' ? '/' : '?', buf, 0);
5721     }
5722     else
5723     {
5724 	g_tag_at_cursor = TRUE;
5725 	do_cmdline_cmd(buf);
5726 	g_tag_at_cursor = FALSE;
5727     }
5728 
5729     vim_free(buf);
5730 }
5731 
5732 /*
5733  * Get visually selected text, within one line only.
5734  * Returns FAIL if more than one line selected.
5735  */
5736     int
5737 get_visual_text(
5738     cmdarg_T	*cap,
5739     char_u	**pp,	    /* return: start of selected text */
5740     int		*lenp)	    /* return: length of selected text */
5741 {
5742     if (VIsual_mode != 'V')
5743 	unadjust_for_sel();
5744     if (VIsual.lnum != curwin->w_cursor.lnum)
5745     {
5746 	if (cap != NULL)
5747 	    clearopbeep(cap->oap);
5748 	return FAIL;
5749     }
5750     if (VIsual_mode == 'V')
5751     {
5752 	*pp = ml_get_curline();
5753 	*lenp = (int)STRLEN(*pp);
5754     }
5755     else
5756     {
5757 	if (LT_POS(curwin->w_cursor, VIsual))
5758 	{
5759 	    *pp = ml_get_pos(&curwin->w_cursor);
5760 	    *lenp = VIsual.col - curwin->w_cursor.col + 1;
5761 	}
5762 	else
5763 	{
5764 	    *pp = ml_get_pos(&VIsual);
5765 	    *lenp = curwin->w_cursor.col - VIsual.col + 1;
5766 	}
5767 	if (has_mbyte)
5768 	    /* Correct the length to include the whole last character. */
5769 	    *lenp += (*mb_ptr2len)(*pp + (*lenp - 1)) - 1;
5770     }
5771     reset_VIsual_and_resel();
5772     return OK;
5773 }
5774 
5775 /*
5776  * CTRL-T: backwards in tag stack
5777  */
5778     static void
5779 nv_tagpop(cmdarg_T *cap)
5780 {
5781     if (!checkclearopq(cap->oap))
5782 	do_tag((char_u *)"", DT_POP, (int)cap->count1, FALSE, TRUE);
5783 }
5784 
5785 /*
5786  * Handle scrolling command 'H', 'L' and 'M'.
5787  */
5788     static void
5789 nv_scroll(cmdarg_T *cap)
5790 {
5791     int		used = 0;
5792     long	n;
5793 #ifdef FEAT_FOLDING
5794     linenr_T	lnum;
5795 #endif
5796     int		half;
5797 
5798     cap->oap->motion_type = MLINE;
5799     setpcmark();
5800 
5801     if (cap->cmdchar == 'L')
5802     {
5803 	validate_botline();	    /* make sure curwin->w_botline is valid */
5804 	curwin->w_cursor.lnum = curwin->w_botline - 1;
5805 	if (cap->count1 - 1 >= curwin->w_cursor.lnum)
5806 	    curwin->w_cursor.lnum = 1;
5807 	else
5808 	{
5809 #ifdef FEAT_FOLDING
5810 	    if (hasAnyFolding(curwin))
5811 	    {
5812 		/* Count a fold for one screen line. */
5813 		for (n = cap->count1 - 1; n > 0
5814 			    && curwin->w_cursor.lnum > curwin->w_topline; --n)
5815 		{
5816 		    (void)hasFolding(curwin->w_cursor.lnum,
5817 						&curwin->w_cursor.lnum, NULL);
5818 		    --curwin->w_cursor.lnum;
5819 		}
5820 	    }
5821 	    else
5822 #endif
5823 		curwin->w_cursor.lnum -= cap->count1 - 1;
5824 	}
5825     }
5826     else
5827     {
5828 	if (cap->cmdchar == 'M')
5829 	{
5830 #ifdef FEAT_DIFF
5831 	    /* Don't count filler lines above the window. */
5832 	    used -= diff_check_fill(curwin, curwin->w_topline)
5833 							  - curwin->w_topfill;
5834 #endif
5835 	    validate_botline();	    /* make sure w_empty_rows is valid */
5836 	    half = (curwin->w_height - curwin->w_empty_rows + 1) / 2;
5837 	    for (n = 0; curwin->w_topline + n < curbuf->b_ml.ml_line_count; ++n)
5838 	    {
5839 #ifdef FEAT_DIFF
5840 		/* Count half he number of filler lines to be "below this
5841 		 * line" and half to be "above the next line". */
5842 		if (n > 0 && used + diff_check_fill(curwin, curwin->w_topline
5843 							     + n) / 2 >= half)
5844 		{
5845 		    --n;
5846 		    break;
5847 		}
5848 #endif
5849 		used += plines(curwin->w_topline + n);
5850 		if (used >= half)
5851 		    break;
5852 #ifdef FEAT_FOLDING
5853 		if (hasFolding(curwin->w_topline + n, NULL, &lnum))
5854 		    n = lnum - curwin->w_topline;
5855 #endif
5856 	    }
5857 	    if (n > 0 && used > curwin->w_height)
5858 		--n;
5859 	}
5860 	else /* (cap->cmdchar == 'H') */
5861 	{
5862 	    n = cap->count1 - 1;
5863 #ifdef FEAT_FOLDING
5864 	    if (hasAnyFolding(curwin))
5865 	    {
5866 		/* Count a fold for one screen line. */
5867 		lnum = curwin->w_topline;
5868 		while (n-- > 0 && lnum < curwin->w_botline - 1)
5869 		{
5870 		    (void)hasFolding(lnum, NULL, &lnum);
5871 		    ++lnum;
5872 		}
5873 		n = lnum - curwin->w_topline;
5874 	    }
5875 #endif
5876 	}
5877 	curwin->w_cursor.lnum = curwin->w_topline + n;
5878 	if (curwin->w_cursor.lnum > curbuf->b_ml.ml_line_count)
5879 	    curwin->w_cursor.lnum = curbuf->b_ml.ml_line_count;
5880     }
5881 
5882     /* Correct for 'so', except when an operator is pending. */
5883     if (cap->oap->op_type == OP_NOP)
5884 	cursor_correct();
5885     beginline(BL_SOL | BL_FIX);
5886 }
5887 
5888 /*
5889  * Cursor right commands.
5890  */
5891     static void
5892 nv_right(cmdarg_T *cap)
5893 {
5894     long	n;
5895     int		past_line;
5896 
5897     if (mod_mask & (MOD_MASK_SHIFT | MOD_MASK_CTRL))
5898     {
5899 	/* <C-Right> and <S-Right> move a word or WORD right */
5900 	if (mod_mask & MOD_MASK_CTRL)
5901 	    cap->arg = TRUE;
5902 	nv_wordcmd(cap);
5903 	return;
5904     }
5905 
5906     cap->oap->motion_type = MCHAR;
5907     cap->oap->inclusive = FALSE;
5908     past_line = (VIsual_active && *p_sel != 'o');
5909 
5910     /*
5911      * In virtual edit mode, there's no such thing as "past_line", as lines
5912      * are (theoretically) infinitely long.
5913      */
5914     if (virtual_active())
5915 	past_line = 0;
5916 
5917     for (n = cap->count1; n > 0; --n)
5918     {
5919 	if ((!past_line && oneright() == FAIL)
5920 		|| (past_line && *ml_get_cursor() == NUL)
5921 		)
5922 	{
5923 	    /*
5924 	     *	  <Space> wraps to next line if 'whichwrap' has 's'.
5925 	     *	      'l' wraps to next line if 'whichwrap' has 'l'.
5926 	     * CURS_RIGHT wraps to next line if 'whichwrap' has '>'.
5927 	     */
5928 	    if (       ((cap->cmdchar == ' '
5929 			    && vim_strchr(p_ww, 's') != NULL)
5930 			|| (cap->cmdchar == 'l'
5931 			    && vim_strchr(p_ww, 'l') != NULL)
5932 			|| (cap->cmdchar == K_RIGHT
5933 			    && vim_strchr(p_ww, '>') != NULL))
5934 		    && curwin->w_cursor.lnum < curbuf->b_ml.ml_line_count)
5935 	    {
5936 		/* When deleting we also count the NL as a character.
5937 		 * Set cap->oap->inclusive when last char in the line is
5938 		 * included, move to next line after that */
5939 		if (	   cap->oap->op_type != OP_NOP
5940 			&& !cap->oap->inclusive
5941 			&& !LINEEMPTY(curwin->w_cursor.lnum))
5942 		    cap->oap->inclusive = TRUE;
5943 		else
5944 		{
5945 		    ++curwin->w_cursor.lnum;
5946 		    curwin->w_cursor.col = 0;
5947 		    curwin->w_cursor.coladd = 0;
5948 		    curwin->w_set_curswant = TRUE;
5949 		    cap->oap->inclusive = FALSE;
5950 		}
5951 		continue;
5952 	    }
5953 	    if (cap->oap->op_type == OP_NOP)
5954 	    {
5955 		/* Only beep and flush if not moved at all */
5956 		if (n == cap->count1)
5957 		    beep_flush();
5958 	    }
5959 	    else
5960 	    {
5961 		if (!LINEEMPTY(curwin->w_cursor.lnum))
5962 		    cap->oap->inclusive = TRUE;
5963 	    }
5964 	    break;
5965 	}
5966 	else if (past_line)
5967 	{
5968 	    curwin->w_set_curswant = TRUE;
5969 	    if (virtual_active())
5970 		oneright();
5971 	    else
5972 	    {
5973 		if (has_mbyte)
5974 		    curwin->w_cursor.col +=
5975 					 (*mb_ptr2len)(ml_get_cursor());
5976 		else
5977 		    ++curwin->w_cursor.col;
5978 	    }
5979 	}
5980     }
5981 #ifdef FEAT_FOLDING
5982     if (n != cap->count1 && (fdo_flags & FDO_HOR) && KeyTyped
5983 					       && cap->oap->op_type == OP_NOP)
5984 	foldOpenCursor();
5985 #endif
5986 }
5987 
5988 /*
5989  * Cursor left commands.
5990  *
5991  * Returns TRUE when operator end should not be adjusted.
5992  */
5993     static void
5994 nv_left(cmdarg_T *cap)
5995 {
5996     long	n;
5997 
5998     if (mod_mask & (MOD_MASK_SHIFT | MOD_MASK_CTRL))
5999     {
6000 	/* <C-Left> and <S-Left> move a word or WORD left */
6001 	if (mod_mask & MOD_MASK_CTRL)
6002 	    cap->arg = 1;
6003 	nv_bck_word(cap);
6004 	return;
6005     }
6006 
6007     cap->oap->motion_type = MCHAR;
6008     cap->oap->inclusive = FALSE;
6009     for (n = cap->count1; n > 0; --n)
6010     {
6011 	if (oneleft() == FAIL)
6012 	{
6013 	    /* <BS> and <Del> wrap to previous line if 'whichwrap' has 'b'.
6014 	     *		 'h' wraps to previous line if 'whichwrap' has 'h'.
6015 	     *	   CURS_LEFT wraps to previous line if 'whichwrap' has '<'.
6016 	     */
6017 	    if (       (((cap->cmdchar == K_BS
6018 				|| cap->cmdchar == Ctrl_H)
6019 			    && vim_strchr(p_ww, 'b') != NULL)
6020 			|| (cap->cmdchar == 'h'
6021 			    && vim_strchr(p_ww, 'h') != NULL)
6022 			|| (cap->cmdchar == K_LEFT
6023 			    && vim_strchr(p_ww, '<') != NULL))
6024 		    && curwin->w_cursor.lnum > 1)
6025 	    {
6026 		--(curwin->w_cursor.lnum);
6027 		coladvance((colnr_T)MAXCOL);
6028 		curwin->w_set_curswant = TRUE;
6029 
6030 		/* When the NL before the first char has to be deleted we
6031 		 * put the cursor on the NUL after the previous line.
6032 		 * This is a very special case, be careful!
6033 		 * Don't adjust op_end now, otherwise it won't work. */
6034 		if (	   (cap->oap->op_type == OP_DELETE
6035 			    || cap->oap->op_type == OP_CHANGE)
6036 			&& !LINEEMPTY(curwin->w_cursor.lnum))
6037 		{
6038 		    char_u *cp = ml_get_cursor();
6039 
6040 		    if (*cp != NUL)
6041 		    {
6042 			if (has_mbyte)
6043 			    curwin->w_cursor.col += (*mb_ptr2len)(cp);
6044 			else
6045 			    ++curwin->w_cursor.col;
6046 		    }
6047 		    cap->retval |= CA_NO_ADJ_OP_END;
6048 		}
6049 		continue;
6050 	    }
6051 	    /* Only beep and flush if not moved at all */
6052 	    else if (cap->oap->op_type == OP_NOP && n == cap->count1)
6053 		beep_flush();
6054 	    break;
6055 	}
6056     }
6057 #ifdef FEAT_FOLDING
6058     if (n != cap->count1 && (fdo_flags & FDO_HOR) && KeyTyped
6059 					       && cap->oap->op_type == OP_NOP)
6060 	foldOpenCursor();
6061 #endif
6062 }
6063 
6064 /*
6065  * Cursor up commands.
6066  * cap->arg is TRUE for "-": Move cursor to first non-blank.
6067  */
6068     static void
6069 nv_up(cmdarg_T *cap)
6070 {
6071     if (mod_mask & MOD_MASK_SHIFT)
6072     {
6073 	/* <S-Up> is page up */
6074 	cap->arg = BACKWARD;
6075 	nv_page(cap);
6076     }
6077     else
6078     {
6079 	cap->oap->motion_type = MLINE;
6080 	if (cursor_up(cap->count1, cap->oap->op_type == OP_NOP) == FAIL)
6081 	    clearopbeep(cap->oap);
6082 	else if (cap->arg)
6083 	    beginline(BL_WHITE | BL_FIX);
6084     }
6085 }
6086 
6087 /*
6088  * Cursor down commands.
6089  * cap->arg is TRUE for CR and "+": Move cursor to first non-blank.
6090  */
6091     static void
6092 nv_down(cmdarg_T *cap)
6093 {
6094     if (mod_mask & MOD_MASK_SHIFT)
6095     {
6096 	/* <S-Down> is page down */
6097 	cap->arg = FORWARD;
6098 	nv_page(cap);
6099     }
6100 #if defined(FEAT_QUICKFIX)
6101     /* Quickfix window only: view the result under the cursor. */
6102     else if (bt_quickfix(curbuf) && cap->cmdchar == CAR)
6103 	qf_view_result(FALSE);
6104 #endif
6105     else
6106     {
6107 #ifdef FEAT_CMDWIN
6108 	/* In the cmdline window a <CR> executes the command. */
6109 	if (cmdwin_type != 0 && cap->cmdchar == CAR)
6110 	    cmdwin_result = CAR;
6111 	else
6112 #endif
6113 #ifdef FEAT_JOB_CHANNEL
6114 	/* In a prompt buffer a <CR> in the last line invokes the callback. */
6115 	if (bt_prompt(curbuf) && cap->cmdchar == CAR
6116 		       && curwin->w_cursor.lnum == curbuf->b_ml.ml_line_count)
6117 	{
6118 	    invoke_prompt_callback();
6119 	    if (restart_edit == 0)
6120 		restart_edit = 'a';
6121 	}
6122 	else
6123 #endif
6124 	{
6125 	    cap->oap->motion_type = MLINE;
6126 	    if (cursor_down(cap->count1, cap->oap->op_type == OP_NOP) == FAIL)
6127 		clearopbeep(cap->oap);
6128 	    else if (cap->arg)
6129 		beginline(BL_WHITE | BL_FIX);
6130 	}
6131     }
6132 }
6133 
6134 #ifdef FEAT_SEARCHPATH
6135 /*
6136  * Grab the file name under the cursor and edit it.
6137  */
6138     static void
6139 nv_gotofile(cmdarg_T *cap)
6140 {
6141     char_u	*ptr;
6142     linenr_T	lnum = -1;
6143 
6144     if (text_locked())
6145     {
6146 	clearopbeep(cap->oap);
6147 	text_locked_msg();
6148 	return;
6149     }
6150     if (curbuf_locked())
6151     {
6152 	clearop(cap->oap);
6153 	return;
6154     }
6155 
6156     ptr = grab_file_name(cap->count1, &lnum);
6157 
6158     if (ptr != NULL)
6159     {
6160 	/* do autowrite if necessary */
6161 	if (curbufIsChanged() && curbuf->b_nwindows <= 1 && !buf_hide(curbuf))
6162 	    (void)autowrite(curbuf, FALSE);
6163 	setpcmark();
6164 	if (do_ecmd(0, ptr, NULL, NULL, ECMD_LAST,
6165 				buf_hide(curbuf) ? ECMD_HIDE : 0, curwin) == OK
6166 		&& cap->nchar == 'F' && lnum >= 0)
6167 	{
6168 	    curwin->w_cursor.lnum = lnum;
6169 	    check_cursor_lnum();
6170 	    beginline(BL_SOL | BL_FIX);
6171 	}
6172 	vim_free(ptr);
6173     }
6174     else
6175 	clearop(cap->oap);
6176 }
6177 #endif
6178 
6179 /*
6180  * <End> command: to end of current line or last line.
6181  */
6182     static void
6183 nv_end(cmdarg_T *cap)
6184 {
6185     if (cap->arg || (mod_mask & MOD_MASK_CTRL))	/* CTRL-END = goto last line */
6186     {
6187 	cap->arg = TRUE;
6188 	nv_goto(cap);
6189 	cap->count1 = 1;		/* to end of current line */
6190     }
6191     nv_dollar(cap);
6192 }
6193 
6194 /*
6195  * Handle the "$" command.
6196  */
6197     static void
6198 nv_dollar(cmdarg_T *cap)
6199 {
6200     cap->oap->motion_type = MCHAR;
6201     cap->oap->inclusive = TRUE;
6202     /* In virtual mode when off the edge of a line and an operator
6203      * is pending (whew!) keep the cursor where it is.
6204      * Otherwise, send it to the end of the line. */
6205     if (!virtual_active() || gchar_cursor() != NUL
6206 					       || cap->oap->op_type == OP_NOP)
6207 	curwin->w_curswant = MAXCOL;	/* so we stay at the end */
6208     if (cursor_down((long)(cap->count1 - 1),
6209 					 cap->oap->op_type == OP_NOP) == FAIL)
6210 	clearopbeep(cap->oap);
6211 #ifdef FEAT_FOLDING
6212     else if ((fdo_flags & FDO_HOR) && KeyTyped && cap->oap->op_type == OP_NOP)
6213 	foldOpenCursor();
6214 #endif
6215 }
6216 
6217 /*
6218  * Implementation of '?' and '/' commands.
6219  * If cap->arg is TRUE don't set PC mark.
6220  */
6221     static void
6222 nv_search(cmdarg_T *cap)
6223 {
6224     oparg_T	*oap = cap->oap;
6225     pos_T	save_cursor = curwin->w_cursor;
6226 
6227     if (cap->cmdchar == '?' && cap->oap->op_type == OP_ROT13)
6228     {
6229 	/* Translate "g??" to "g?g?" */
6230 	cap->cmdchar = 'g';
6231 	cap->nchar = '?';
6232 	nv_operator(cap);
6233 	return;
6234     }
6235 
6236     /* When using 'incsearch' the cursor may be moved to set a different search
6237      * start position. */
6238     cap->searchbuf = getcmdline(cap->cmdchar, cap->count1, 0);
6239 
6240     if (cap->searchbuf == NULL)
6241     {
6242 	clearop(oap);
6243 	return;
6244     }
6245 
6246     (void)normal_search(cap, cap->cmdchar, cap->searchbuf,
6247 			(cap->arg || !EQUAL_POS(save_cursor, curwin->w_cursor))
6248 							   ? 0 : SEARCH_MARK);
6249 }
6250 
6251 /*
6252  * Handle "N" and "n" commands.
6253  * cap->arg is SEARCH_REV for "N", 0 for "n".
6254  */
6255     static void
6256 nv_next(cmdarg_T *cap)
6257 {
6258     pos_T old = curwin->w_cursor;
6259     int   i = normal_search(cap, 0, NULL, SEARCH_MARK | cap->arg);
6260 
6261     if (i == 1 && EQUAL_POS(old, curwin->w_cursor))
6262     {
6263 	/* Avoid getting stuck on the current cursor position, which can
6264 	 * happen when an offset is given and the cursor is on the last char
6265 	 * in the buffer: Repeat with count + 1. */
6266 	cap->count1 += 1;
6267 	(void)normal_search(cap, 0, NULL, SEARCH_MARK | cap->arg);
6268 	cap->count1 -= 1;
6269     }
6270 }
6271 
6272 /*
6273  * Search for "pat" in direction "dir" ('/' or '?', 0 for repeat).
6274  * Uses only cap->count1 and cap->oap from "cap".
6275  * Return 0 for failure, 1 for found, 2 for found and line offset added.
6276  */
6277     static int
6278 normal_search(
6279     cmdarg_T	*cap,
6280     int		dir,
6281     char_u	*pat,
6282     int		opt)		/* extra flags for do_search() */
6283 {
6284     int		i;
6285 
6286     cap->oap->motion_type = MCHAR;
6287     cap->oap->inclusive = FALSE;
6288     cap->oap->use_reg_one = TRUE;
6289     curwin->w_set_curswant = TRUE;
6290 
6291     i = do_search(cap->oap, dir, pat, cap->count1,
6292 		      opt | SEARCH_OPT | SEARCH_ECHO | SEARCH_MSG, NULL, NULL);
6293     if (i == 0)
6294 	clearop(cap->oap);
6295     else
6296     {
6297 	if (i == 2)
6298 	    cap->oap->motion_type = MLINE;
6299 	curwin->w_cursor.coladd = 0;
6300 #ifdef FEAT_FOLDING
6301 	if (cap->oap->op_type == OP_NOP && (fdo_flags & FDO_SEARCH) && KeyTyped)
6302 	    foldOpenCursor();
6303 #endif
6304     }
6305 
6306     /* "/$" will put the cursor after the end of the line, may need to
6307      * correct that here */
6308     check_cursor();
6309     return i;
6310 }
6311 
6312 /*
6313  * Character search commands.
6314  * cap->arg is BACKWARD for 'F' and 'T', FORWARD for 'f' and 't', TRUE for
6315  * ',' and FALSE for ';'.
6316  * cap->nchar is NUL for ',' and ';' (repeat the search)
6317  */
6318     static void
6319 nv_csearch(cmdarg_T *cap)
6320 {
6321     int		t_cmd;
6322 
6323     if (cap->cmdchar == 't' || cap->cmdchar == 'T')
6324 	t_cmd = TRUE;
6325     else
6326 	t_cmd = FALSE;
6327 
6328     cap->oap->motion_type = MCHAR;
6329     if (IS_SPECIAL(cap->nchar) || searchc(cap, t_cmd) == FAIL)
6330 	clearopbeep(cap->oap);
6331     else
6332     {
6333 	curwin->w_set_curswant = TRUE;
6334 	/* Include a Tab for "tx" and for "dfx". */
6335 	if (gchar_cursor() == TAB && virtual_active() && cap->arg == FORWARD
6336 		&& (t_cmd || cap->oap->op_type != OP_NOP))
6337 	{
6338 	    colnr_T	scol, ecol;
6339 
6340 	    getvcol(curwin, &curwin->w_cursor, &scol, NULL, &ecol);
6341 	    curwin->w_cursor.coladd = ecol - scol;
6342 	}
6343 	else
6344 	    curwin->w_cursor.coladd = 0;
6345 	adjust_for_sel(cap);
6346 #ifdef FEAT_FOLDING
6347 	if ((fdo_flags & FDO_HOR) && KeyTyped && cap->oap->op_type == OP_NOP)
6348 	    foldOpenCursor();
6349 #endif
6350     }
6351 }
6352 
6353 /*
6354  * "[" and "]" commands.
6355  * cap->arg is BACKWARD for "[" and FORWARD for "]".
6356  */
6357     static void
6358 nv_brackets(cmdarg_T *cap)
6359 {
6360     pos_T	new_pos = {0, 0, 0};
6361     pos_T	prev_pos;
6362     pos_T	*pos = NULL;	    /* init for GCC */
6363     pos_T	old_pos;	    /* cursor position before command */
6364     int		flag;
6365     long	n;
6366     int		findc;
6367     int		c;
6368 
6369     cap->oap->motion_type = MCHAR;
6370     cap->oap->inclusive = FALSE;
6371     old_pos = curwin->w_cursor;
6372     curwin->w_cursor.coladd = 0;    // TODO: don't do this for an error.
6373 
6374 #ifdef FEAT_SEARCHPATH
6375     /*
6376      * "[f" or "]f" : Edit file under the cursor (same as "gf")
6377      */
6378     if (cap->nchar == 'f')
6379 	nv_gotofile(cap);
6380     else
6381 #endif
6382 
6383 #ifdef FEAT_FIND_ID
6384     /*
6385      * Find the occurrence(s) of the identifier or define under cursor
6386      * in current and included files or jump to the first occurrence.
6387      *
6388      *			search	     list	    jump
6389      *		      fwd   bwd    fwd	 bwd	 fwd	bwd
6390      * identifier     "]i"  "[i"   "]I"  "[I"	"]^I"  "[^I"
6391      * define	      "]d"  "[d"   "]D"  "[D"	"]^D"  "[^D"
6392      */
6393     if (vim_strchr((char_u *)
6394 # ifdef EBCDIC
6395 		"iI\005dD\067",
6396 # else
6397 		"iI\011dD\004",
6398 # endif
6399 		cap->nchar) != NULL)
6400     {
6401 	char_u	*ptr;
6402 	int	len;
6403 
6404 	if ((len = find_ident_under_cursor(&ptr, FIND_IDENT)) == 0)
6405 	    clearop(cap->oap);
6406 	else
6407 	{
6408 	    find_pattern_in_path(ptr, 0, len, TRUE,
6409 		cap->count0 == 0 ? !isupper(cap->nchar) : FALSE,
6410 		((cap->nchar & 0xf) == ('d' & 0xf)) ?  FIND_DEFINE : FIND_ANY,
6411 		cap->count1,
6412 		isupper(cap->nchar) ? ACTION_SHOW_ALL :
6413 			    islower(cap->nchar) ? ACTION_SHOW : ACTION_GOTO,
6414 		cap->cmdchar == ']' ? curwin->w_cursor.lnum + 1 : (linenr_T)1,
6415 		(linenr_T)MAXLNUM);
6416 	    curwin->w_set_curswant = TRUE;
6417 	}
6418     }
6419     else
6420 #endif
6421 
6422     /*
6423      * "[{", "[(", "]}" or "])": go to Nth unclosed '{', '(', '}' or ')'
6424      * "[#", "]#": go to start/end of Nth innermost #if..#endif construct.
6425      * "[/", "[*", "]/", "]*": go to Nth comment start/end.
6426      * "[m" or "]m" search for prev/next start of (Java) method.
6427      * "[M" or "]M" search for prev/next end of (Java) method.
6428      */
6429     if (  (cap->cmdchar == '['
6430 		&& vim_strchr((char_u *)"{(*/#mM", cap->nchar) != NULL)
6431 	    || (cap->cmdchar == ']'
6432 		&& vim_strchr((char_u *)"})*/#mM", cap->nchar) != NULL))
6433     {
6434 	if (cap->nchar == '*')
6435 	    cap->nchar = '/';
6436 	prev_pos.lnum = 0;
6437 	if (cap->nchar == 'm' || cap->nchar == 'M')
6438 	{
6439 	    if (cap->cmdchar == '[')
6440 		findc = '{';
6441 	    else
6442 		findc = '}';
6443 	    n = 9999;
6444 	}
6445 	else
6446 	{
6447 	    findc = cap->nchar;
6448 	    n = cap->count1;
6449 	}
6450 	for ( ; n > 0; --n)
6451 	{
6452 	    if ((pos = findmatchlimit(cap->oap, findc,
6453 		(cap->cmdchar == '[') ? FM_BACKWARD : FM_FORWARD, 0)) == NULL)
6454 	    {
6455 		if (new_pos.lnum == 0)	/* nothing found */
6456 		{
6457 		    if (cap->nchar != 'm' && cap->nchar != 'M')
6458 			clearopbeep(cap->oap);
6459 		}
6460 		else
6461 		    pos = &new_pos;	/* use last one found */
6462 		break;
6463 	    }
6464 	    prev_pos = new_pos;
6465 	    curwin->w_cursor = *pos;
6466 	    new_pos = *pos;
6467 	}
6468 	curwin->w_cursor = old_pos;
6469 
6470 	/*
6471 	 * Handle "[m", "]m", "[M" and "[M".  The findmatchlimit() only
6472 	 * brought us to the match for "[m" and "]M" when inside a method.
6473 	 * Try finding the '{' or '}' we want to be at.
6474 	 * Also repeat for the given count.
6475 	 */
6476 	if (cap->nchar == 'm' || cap->nchar == 'M')
6477 	{
6478 	    /* norm is TRUE for "]M" and "[m" */
6479 	    int	    norm = ((findc == '{') == (cap->nchar == 'm'));
6480 
6481 	    n = cap->count1;
6482 	    /* found a match: we were inside a method */
6483 	    if (prev_pos.lnum != 0)
6484 	    {
6485 		pos = &prev_pos;
6486 		curwin->w_cursor = prev_pos;
6487 		if (norm)
6488 		    --n;
6489 	    }
6490 	    else
6491 		pos = NULL;
6492 	    while (n > 0)
6493 	    {
6494 		for (;;)
6495 		{
6496 		    if ((findc == '{' ? dec_cursor() : inc_cursor()) < 0)
6497 		    {
6498 			/* if not found anything, that's an error */
6499 			if (pos == NULL)
6500 			    clearopbeep(cap->oap);
6501 			n = 0;
6502 			break;
6503 		    }
6504 		    c = gchar_cursor();
6505 		    if (c == '{' || c == '}')
6506 		    {
6507 			/* Must have found end/start of class: use it.
6508 			 * Or found the place to be at. */
6509 			if ((c == findc && norm) || (n == 1 && !norm))
6510 			{
6511 			    new_pos = curwin->w_cursor;
6512 			    pos = &new_pos;
6513 			    n = 0;
6514 			}
6515 			/* if no match found at all, we started outside of the
6516 			 * class and we're inside now.  Just go on. */
6517 			else if (new_pos.lnum == 0)
6518 			{
6519 			    new_pos = curwin->w_cursor;
6520 			    pos = &new_pos;
6521 			}
6522 			/* found start/end of other method: go to match */
6523 			else if ((pos = findmatchlimit(cap->oap, findc,
6524 			    (cap->cmdchar == '[') ? FM_BACKWARD : FM_FORWARD,
6525 								  0)) == NULL)
6526 			    n = 0;
6527 			else
6528 			    curwin->w_cursor = *pos;
6529 			break;
6530 		    }
6531 		}
6532 		--n;
6533 	    }
6534 	    curwin->w_cursor = old_pos;
6535 	    if (pos == NULL && new_pos.lnum != 0)
6536 		clearopbeep(cap->oap);
6537 	}
6538 	if (pos != NULL)
6539 	{
6540 	    setpcmark();
6541 	    curwin->w_cursor = *pos;
6542 	    curwin->w_set_curswant = TRUE;
6543 #ifdef FEAT_FOLDING
6544 	    if ((fdo_flags & FDO_BLOCK) && KeyTyped
6545 					       && cap->oap->op_type == OP_NOP)
6546 		foldOpenCursor();
6547 #endif
6548 	}
6549     }
6550 
6551     /*
6552      * "[[", "[]", "]]" and "][": move to start or end of function
6553      */
6554     else if (cap->nchar == '[' || cap->nchar == ']')
6555     {
6556 	if (cap->nchar == cap->cmdchar)		    /* "]]" or "[[" */
6557 	    flag = '{';
6558 	else
6559 	    flag = '}';		    /* "][" or "[]" */
6560 
6561 	curwin->w_set_curswant = TRUE;
6562 	/*
6563 	 * Imitate strange Vi behaviour: When using "]]" with an operator
6564 	 * we also stop at '}'.
6565 	 */
6566 	if (!findpar(&cap->oap->inclusive, cap->arg, cap->count1, flag,
6567 	      (cap->oap->op_type != OP_NOP
6568 				      && cap->arg == FORWARD && flag == '{')))
6569 	    clearopbeep(cap->oap);
6570 	else
6571 	{
6572 	    if (cap->oap->op_type == OP_NOP)
6573 		beginline(BL_WHITE | BL_FIX);
6574 #ifdef FEAT_FOLDING
6575 	    if ((fdo_flags & FDO_BLOCK) && KeyTyped && cap->oap->op_type == OP_NOP)
6576 		foldOpenCursor();
6577 #endif
6578 	}
6579     }
6580 
6581     /*
6582      * "[p", "[P", "]P" and "]p": put with indent adjustment
6583      */
6584     else if (cap->nchar == 'p' || cap->nchar == 'P')
6585     {
6586 	if (!checkclearop(cap->oap))
6587 	{
6588 	    int	    dir = (cap->cmdchar == ']' && cap->nchar == 'p')
6589 							 ? FORWARD : BACKWARD;
6590 	    int	    regname = cap->oap->regname;
6591 	    int	    was_visual = VIsual_active;
6592 	    int	    line_count = curbuf->b_ml.ml_line_count;
6593 	    pos_T   start, end;
6594 
6595 	    if (VIsual_active)
6596 	    {
6597 		start = LTOREQ_POS(VIsual, curwin->w_cursor)
6598 						  ? VIsual : curwin->w_cursor;
6599 		end =  EQUAL_POS(start,VIsual) ? curwin->w_cursor : VIsual;
6600 		curwin->w_cursor = (dir == BACKWARD ? start : end);
6601 	    }
6602 # ifdef FEAT_CLIPBOARD
6603 	    adjust_clip_reg(&regname);
6604 # endif
6605 	    prep_redo_cmd(cap);
6606 
6607 	    do_put(regname, dir, cap->count1, PUT_FIXINDENT);
6608 	    if (was_visual)
6609 	    {
6610 		VIsual = start;
6611 		curwin->w_cursor = end;
6612 		if (dir == BACKWARD)
6613 		{
6614 		    /* adjust lines */
6615 		    VIsual.lnum += curbuf->b_ml.ml_line_count - line_count;
6616 		    curwin->w_cursor.lnum +=
6617 				      curbuf->b_ml.ml_line_count - line_count;
6618 		}
6619 
6620 		VIsual_active = TRUE;
6621 		if (VIsual_mode == 'V')
6622 		{
6623 		    /* delete visually selected lines */
6624 		    cap->cmdchar = 'd';
6625 		    cap->nchar = NUL;
6626 		    cap->oap->regname = regname;
6627 		    nv_operator(cap);
6628 		    do_pending_operator(cap, 0, FALSE);
6629 		}
6630 		if (VIsual_active)
6631 		{
6632 		    end_visual_mode();
6633 		    redraw_later(SOME_VALID);
6634 		}
6635 	    }
6636 	}
6637     }
6638 
6639     /*
6640      * "['", "[`", "]'" and "]`": jump to next mark
6641      */
6642     else if (cap->nchar == '\'' || cap->nchar == '`')
6643     {
6644 	pos = &curwin->w_cursor;
6645 	for (n = cap->count1; n > 0; --n)
6646 	{
6647 	    prev_pos = *pos;
6648 	    pos = getnextmark(pos, cap->cmdchar == '[' ? BACKWARD : FORWARD,
6649 							  cap->nchar == '\'');
6650 	    if (pos == NULL)
6651 		break;
6652 	}
6653 	if (pos == NULL)
6654 	    pos = &prev_pos;
6655 	nv_cursormark(cap, cap->nchar == '\'', pos);
6656     }
6657 
6658 #ifdef FEAT_MOUSE
6659     /*
6660      * [ or ] followed by a middle mouse click: put selected text with
6661      * indent adjustment.  Any other button just does as usual.
6662      */
6663     else if (cap->nchar >= K_RIGHTRELEASE && cap->nchar <= K_LEFTMOUSE)
6664     {
6665 	(void)do_mouse(cap->oap, cap->nchar,
6666 		       (cap->cmdchar == ']') ? FORWARD : BACKWARD,
6667 		       cap->count1, PUT_FIXINDENT);
6668     }
6669 #endif /* FEAT_MOUSE */
6670 
6671 #ifdef FEAT_FOLDING
6672     /*
6673      * "[z" and "]z": move to start or end of open fold.
6674      */
6675     else if (cap->nchar == 'z')
6676     {
6677 	if (foldMoveTo(FALSE, cap->cmdchar == ']' ? FORWARD : BACKWARD,
6678 							 cap->count1) == FAIL)
6679 	    clearopbeep(cap->oap);
6680     }
6681 #endif
6682 
6683 #ifdef FEAT_DIFF
6684     /*
6685      * "[c" and "]c": move to next or previous diff-change.
6686      */
6687     else if (cap->nchar == 'c')
6688     {
6689 	if (diff_move_to(cap->cmdchar == ']' ? FORWARD : BACKWARD,
6690 							 cap->count1) == FAIL)
6691 	    clearopbeep(cap->oap);
6692     }
6693 #endif
6694 
6695 #ifdef FEAT_SPELL
6696     /*
6697      * "[s", "[S", "]s" and "]S": move to next spell error.
6698      */
6699     else if (cap->nchar == 's' || cap->nchar == 'S')
6700     {
6701 	setpcmark();
6702 	for (n = 0; n < cap->count1; ++n)
6703 	    if (spell_move_to(curwin, cap->cmdchar == ']' ? FORWARD : BACKWARD,
6704 			  cap->nchar == 's' ? TRUE : FALSE, FALSE, NULL) == 0)
6705 	    {
6706 		clearopbeep(cap->oap);
6707 		break;
6708 	    }
6709 	    else
6710 		curwin->w_set_curswant = TRUE;
6711 # ifdef FEAT_FOLDING
6712 	if (cap->oap->op_type == OP_NOP && (fdo_flags & FDO_SEARCH) && KeyTyped)
6713 	    foldOpenCursor();
6714 # endif
6715     }
6716 #endif
6717 
6718     /* Not a valid cap->nchar. */
6719     else
6720 	clearopbeep(cap->oap);
6721 }
6722 
6723 /*
6724  * Handle Normal mode "%" command.
6725  */
6726     static void
6727 nv_percent(cmdarg_T *cap)
6728 {
6729     pos_T	*pos;
6730 #if defined(FEAT_FOLDING)
6731     linenr_T	lnum = curwin->w_cursor.lnum;
6732 #endif
6733 
6734     cap->oap->inclusive = TRUE;
6735     if (cap->count0)	    /* {cnt}% : goto {cnt} percentage in file */
6736     {
6737 	if (cap->count0 > 100)
6738 	    clearopbeep(cap->oap);
6739 	else
6740 	{
6741 	    cap->oap->motion_type = MLINE;
6742 	    setpcmark();
6743 	    /* Round up, so CTRL-G will give same value.  Watch out for a
6744 	     * large line count, the line number must not go negative! */
6745 	    if (curbuf->b_ml.ml_line_count > 1000000)
6746 		curwin->w_cursor.lnum = (curbuf->b_ml.ml_line_count + 99L)
6747 							 / 100L * cap->count0;
6748 	    else
6749 		curwin->w_cursor.lnum = (curbuf->b_ml.ml_line_count *
6750 						    cap->count0 + 99L) / 100L;
6751 	    if (curwin->w_cursor.lnum > curbuf->b_ml.ml_line_count)
6752 		curwin->w_cursor.lnum = curbuf->b_ml.ml_line_count;
6753 	    beginline(BL_SOL | BL_FIX);
6754 	}
6755     }
6756     else		    /* "%" : go to matching paren */
6757     {
6758 	cap->oap->motion_type = MCHAR;
6759 	cap->oap->use_reg_one = TRUE;
6760 	if ((pos = findmatch(cap->oap, NUL)) == NULL)
6761 	    clearopbeep(cap->oap);
6762 	else
6763 	{
6764 	    setpcmark();
6765 	    curwin->w_cursor = *pos;
6766 	    curwin->w_set_curswant = TRUE;
6767 	    curwin->w_cursor.coladd = 0;
6768 	    adjust_for_sel(cap);
6769 	}
6770     }
6771 #ifdef FEAT_FOLDING
6772     if (cap->oap->op_type == OP_NOP
6773 	    && lnum != curwin->w_cursor.lnum
6774 	    && (fdo_flags & FDO_PERCENT)
6775 	    && KeyTyped)
6776 	foldOpenCursor();
6777 #endif
6778 }
6779 
6780 /*
6781  * Handle "(" and ")" commands.
6782  * cap->arg is BACKWARD for "(" and FORWARD for ")".
6783  */
6784     static void
6785 nv_brace(cmdarg_T *cap)
6786 {
6787     cap->oap->motion_type = MCHAR;
6788     cap->oap->use_reg_one = TRUE;
6789     /* The motion used to be inclusive for "(", but that is not what Vi does. */
6790     cap->oap->inclusive = FALSE;
6791     curwin->w_set_curswant = TRUE;
6792 
6793     if (findsent(cap->arg, cap->count1) == FAIL)
6794 	clearopbeep(cap->oap);
6795     else
6796     {
6797 	/* Don't leave the cursor on the NUL past end of line. */
6798 	adjust_cursor(cap->oap);
6799 	curwin->w_cursor.coladd = 0;
6800 #ifdef FEAT_FOLDING
6801 	if ((fdo_flags & FDO_BLOCK) && KeyTyped && cap->oap->op_type == OP_NOP)
6802 	    foldOpenCursor();
6803 #endif
6804     }
6805 }
6806 
6807 /*
6808  * "m" command: Mark a position.
6809  */
6810     static void
6811 nv_mark(cmdarg_T *cap)
6812 {
6813     if (!checkclearop(cap->oap))
6814     {
6815 	if (setmark(cap->nchar) == FAIL)
6816 	    clearopbeep(cap->oap);
6817     }
6818 }
6819 
6820 /*
6821  * "{" and "}" commands.
6822  * cmd->arg is BACKWARD for "{" and FORWARD for "}".
6823  */
6824     static void
6825 nv_findpar(cmdarg_T *cap)
6826 {
6827     cap->oap->motion_type = MCHAR;
6828     cap->oap->inclusive = FALSE;
6829     cap->oap->use_reg_one = TRUE;
6830     curwin->w_set_curswant = TRUE;
6831     if (!findpar(&cap->oap->inclusive, cap->arg, cap->count1, NUL, FALSE))
6832 	clearopbeep(cap->oap);
6833     else
6834     {
6835 	curwin->w_cursor.coladd = 0;
6836 #ifdef FEAT_FOLDING
6837 	if ((fdo_flags & FDO_BLOCK) && KeyTyped && cap->oap->op_type == OP_NOP)
6838 	    foldOpenCursor();
6839 #endif
6840     }
6841 }
6842 
6843 /*
6844  * "u" command: Undo or make lower case.
6845  */
6846     static void
6847 nv_undo(cmdarg_T *cap)
6848 {
6849     if (cap->oap->op_type == OP_LOWER || VIsual_active)
6850     {
6851 	/* translate "<Visual>u" to "<Visual>gu" and "guu" to "gugu" */
6852 	cap->cmdchar = 'g';
6853 	cap->nchar = 'u';
6854 	nv_operator(cap);
6855     }
6856     else
6857 	nv_kundo(cap);
6858 }
6859 
6860 /*
6861  * <Undo> command.
6862  */
6863     static void
6864 nv_kundo(cmdarg_T *cap)
6865 {
6866     if (!checkclearopq(cap->oap))
6867     {
6868 #ifdef FEAT_JOB_CHANNEL
6869 	if (bt_prompt(curbuf))
6870 	{
6871 	    clearopbeep(cap->oap);
6872 	    return;
6873 	}
6874 #endif
6875 	u_undo((int)cap->count1);
6876 	curwin->w_set_curswant = TRUE;
6877     }
6878 }
6879 
6880 /*
6881  * Handle the "r" command.
6882  */
6883     static void
6884 nv_replace(cmdarg_T *cap)
6885 {
6886     char_u	*ptr;
6887     int		had_ctrl_v;
6888     long	n;
6889 
6890     if (checkclearop(cap->oap))
6891 	return;
6892 #ifdef FEAT_JOB_CHANNEL
6893     if (bt_prompt(curbuf) && !prompt_curpos_editable())
6894     {
6895 	clearopbeep(cap->oap);
6896 	return;
6897     }
6898 #endif
6899 
6900     /* get another character */
6901     if (cap->nchar == Ctrl_V)
6902     {
6903 	had_ctrl_v = Ctrl_V;
6904 	cap->nchar = get_literal();
6905 	/* Don't redo a multibyte character with CTRL-V. */
6906 	if (cap->nchar > DEL)
6907 	    had_ctrl_v = NUL;
6908     }
6909     else
6910 	had_ctrl_v = NUL;
6911 
6912     /* Abort if the character is a special key. */
6913     if (IS_SPECIAL(cap->nchar))
6914     {
6915 	clearopbeep(cap->oap);
6916 	return;
6917     }
6918 
6919     /* Visual mode "r" */
6920     if (VIsual_active)
6921     {
6922 	if (got_int)
6923 	    reset_VIsual();
6924 	if (had_ctrl_v)
6925 	{
6926 	    /* Use a special (negative) number to make a difference between a
6927 	     * literal CR or NL and a line break. */
6928 	    if (cap->nchar == CAR)
6929 		cap->nchar = REPLACE_CR_NCHAR;
6930 	    else if (cap->nchar == NL)
6931 		cap->nchar = REPLACE_NL_NCHAR;
6932 	}
6933 	nv_operator(cap);
6934 	return;
6935     }
6936 
6937     /* Break tabs, etc. */
6938     if (virtual_active())
6939     {
6940 	if (u_save_cursor() == FAIL)
6941 	    return;
6942 	if (gchar_cursor() == NUL)
6943 	{
6944 	    /* Add extra space and put the cursor on the first one. */
6945 	    coladvance_force((colnr_T)(getviscol() + cap->count1));
6946 	    curwin->w_cursor.col -= cap->count1;
6947 	}
6948 	else if (gchar_cursor() == TAB)
6949 	    coladvance_force(getviscol());
6950     }
6951 
6952     /* Abort if not enough characters to replace. */
6953     ptr = ml_get_cursor();
6954     if (STRLEN(ptr) < (unsigned)cap->count1
6955 	    || (has_mbyte && mb_charlen(ptr) < cap->count1))
6956     {
6957 	clearopbeep(cap->oap);
6958 	return;
6959     }
6960 
6961     /*
6962      * Replacing with a TAB is done by edit() when it is complicated because
6963      * 'expandtab' or 'smarttab' is set.  CTRL-V TAB inserts a literal TAB.
6964      * Other characters are done below to avoid problems with things like
6965      * CTRL-V 048 (for edit() this would be R CTRL-V 0 ESC).
6966      */
6967     if (had_ctrl_v != Ctrl_V && cap->nchar == '\t' && (curbuf->b_p_et || p_sta))
6968     {
6969 	stuffnumReadbuff(cap->count1);
6970 	stuffcharReadbuff('R');
6971 	stuffcharReadbuff('\t');
6972 	stuffcharReadbuff(ESC);
6973 	return;
6974     }
6975 
6976     /* save line for undo */
6977     if (u_save_cursor() == FAIL)
6978 	return;
6979 
6980     if (had_ctrl_v != Ctrl_V && (cap->nchar == '\r' || cap->nchar == '\n'))
6981     {
6982 	/*
6983 	 * Replace character(s) by a single newline.
6984 	 * Strange vi behaviour: Only one newline is inserted.
6985 	 * Delete the characters here.
6986 	 * Insert the newline with an insert command, takes care of
6987 	 * autoindent.	The insert command depends on being on the last
6988 	 * character of a line or not.
6989 	 */
6990 	(void)del_chars(cap->count1, FALSE);	/* delete the characters */
6991 	stuffcharReadbuff('\r');
6992 	stuffcharReadbuff(ESC);
6993 
6994 	/* Give 'r' to edit(), to get the redo command right. */
6995 	invoke_edit(cap, TRUE, 'r', FALSE);
6996     }
6997     else
6998     {
6999 	prep_redo(cap->oap->regname, cap->count1,
7000 				       NUL, 'r', NUL, had_ctrl_v, cap->nchar);
7001 
7002 	curbuf->b_op_start = curwin->w_cursor;
7003 	if (has_mbyte)
7004 	{
7005 	    int		old_State = State;
7006 
7007 	    if (cap->ncharC1 != 0)
7008 		AppendCharToRedobuff(cap->ncharC1);
7009 	    if (cap->ncharC2 != 0)
7010 		AppendCharToRedobuff(cap->ncharC2);
7011 
7012 	    /* This is slow, but it handles replacing a single-byte with a
7013 	     * multi-byte and the other way around.  Also handles adding
7014 	     * composing characters for utf-8. */
7015 	    for (n = cap->count1; n > 0; --n)
7016 	    {
7017 		State = REPLACE;
7018 		if (cap->nchar == Ctrl_E || cap->nchar == Ctrl_Y)
7019 		{
7020 		    int c = ins_copychar(curwin->w_cursor.lnum
7021 					   + (cap->nchar == Ctrl_Y ? -1 : 1));
7022 		    if (c != NUL)
7023 			ins_char(c);
7024 		    else
7025 			/* will be decremented further down */
7026 			++curwin->w_cursor.col;
7027 		}
7028 		else
7029 		    ins_char(cap->nchar);
7030 		State = old_State;
7031 		if (cap->ncharC1 != 0)
7032 		    ins_char(cap->ncharC1);
7033 		if (cap->ncharC2 != 0)
7034 		    ins_char(cap->ncharC2);
7035 	    }
7036 	}
7037 	else
7038 	{
7039 	    /*
7040 	     * Replace the characters within one line.
7041 	     */
7042 	    for (n = cap->count1; n > 0; --n)
7043 	    {
7044 		/*
7045 		 * Get ptr again, because u_save and/or showmatch() will have
7046 		 * released the line.  At the same time we let know that the
7047 		 * line will be changed.
7048 		 */
7049 		ptr = ml_get_buf(curbuf, curwin->w_cursor.lnum, TRUE);
7050 		if (cap->nchar == Ctrl_E || cap->nchar == Ctrl_Y)
7051 		{
7052 		  int c = ins_copychar(curwin->w_cursor.lnum
7053 					   + (cap->nchar == Ctrl_Y ? -1 : 1));
7054 		  if (c != NUL)
7055 		    ptr[curwin->w_cursor.col] = c;
7056 		}
7057 		else
7058 		    ptr[curwin->w_cursor.col] = cap->nchar;
7059 		if (p_sm && msg_silent == 0)
7060 		    showmatch(cap->nchar);
7061 		++curwin->w_cursor.col;
7062 	    }
7063 #ifdef FEAT_NETBEANS_INTG
7064 	    if (netbeans_active())
7065 	    {
7066 		colnr_T  start = (colnr_T)(curwin->w_cursor.col - cap->count1);
7067 
7068 		netbeans_removed(curbuf, curwin->w_cursor.lnum, start,
7069 							   (long)cap->count1);
7070 		netbeans_inserted(curbuf, curwin->w_cursor.lnum, start,
7071 					       &ptr[start], (int)cap->count1);
7072 	    }
7073 #endif
7074 
7075 	    /* mark the buffer as changed and prepare for displaying */
7076 	    changed_bytes(curwin->w_cursor.lnum,
7077 			       (colnr_T)(curwin->w_cursor.col - cap->count1));
7078 	}
7079 	--curwin->w_cursor.col;	    /* cursor on the last replaced char */
7080 	/* if the character on the left of the current cursor is a multi-byte
7081 	 * character, move two characters left */
7082 	if (has_mbyte)
7083 	    mb_adjust_cursor();
7084 	curbuf->b_op_end = curwin->w_cursor;
7085 	curwin->w_set_curswant = TRUE;
7086 	set_last_insert(cap->nchar);
7087     }
7088 }
7089 
7090 /*
7091  * 'o': Exchange start and end of Visual area.
7092  * 'O': same, but in block mode exchange left and right corners.
7093  */
7094     static void
7095 v_swap_corners(int cmdchar)
7096 {
7097     pos_T	old_cursor;
7098     colnr_T	left, right;
7099 
7100     if (cmdchar == 'O' && VIsual_mode == Ctrl_V)
7101     {
7102 	old_cursor = curwin->w_cursor;
7103 	getvcols(curwin, &old_cursor, &VIsual, &left, &right);
7104 	curwin->w_cursor.lnum = VIsual.lnum;
7105 	coladvance(left);
7106 	VIsual = curwin->w_cursor;
7107 
7108 	curwin->w_cursor.lnum = old_cursor.lnum;
7109 	curwin->w_curswant = right;
7110 	/* 'selection "exclusive" and cursor at right-bottom corner: move it
7111 	 * right one column */
7112 	if (old_cursor.lnum >= VIsual.lnum && *p_sel == 'e')
7113 	    ++curwin->w_curswant;
7114 	coladvance(curwin->w_curswant);
7115 	if (curwin->w_cursor.col == old_cursor.col
7116 		&& (!virtual_active()
7117 		    || curwin->w_cursor.coladd == old_cursor.coladd))
7118 	{
7119 	    curwin->w_cursor.lnum = VIsual.lnum;
7120 	    if (old_cursor.lnum <= VIsual.lnum && *p_sel == 'e')
7121 		++right;
7122 	    coladvance(right);
7123 	    VIsual = curwin->w_cursor;
7124 
7125 	    curwin->w_cursor.lnum = old_cursor.lnum;
7126 	    coladvance(left);
7127 	    curwin->w_curswant = left;
7128 	}
7129     }
7130     else
7131     {
7132 	old_cursor = curwin->w_cursor;
7133 	curwin->w_cursor = VIsual;
7134 	VIsual = old_cursor;
7135 	curwin->w_set_curswant = TRUE;
7136     }
7137 }
7138 
7139 /*
7140  * "R" (cap->arg is FALSE) and "gR" (cap->arg is TRUE).
7141  */
7142     static void
7143 nv_Replace(cmdarg_T *cap)
7144 {
7145     if (VIsual_active)		/* "R" is replace lines */
7146     {
7147 	cap->cmdchar = 'c';
7148 	cap->nchar = NUL;
7149 	VIsual_mode_orig = VIsual_mode; /* remember original area for gv */
7150 	VIsual_mode = 'V';
7151 	nv_operator(cap);
7152     }
7153     else if (!checkclearopq(cap->oap))
7154     {
7155 	if (!curbuf->b_p_ma)
7156 	    emsg(_(e_modifiable));
7157 	else
7158 	{
7159 	    if (virtual_active())
7160 		coladvance(getviscol());
7161 	    invoke_edit(cap, FALSE, cap->arg ? 'V' : 'R', FALSE);
7162 	}
7163     }
7164 }
7165 
7166 /*
7167  * "gr".
7168  */
7169     static void
7170 nv_vreplace(cmdarg_T *cap)
7171 {
7172     if (VIsual_active)
7173     {
7174 	cap->cmdchar = 'r';
7175 	cap->nchar = cap->extra_char;
7176 	nv_replace(cap);	/* Do same as "r" in Visual mode for now */
7177     }
7178     else if (!checkclearopq(cap->oap))
7179     {
7180 	if (!curbuf->b_p_ma)
7181 	    emsg(_(e_modifiable));
7182 	else
7183 	{
7184 	    if (cap->extra_char == Ctrl_V)	/* get another character */
7185 		cap->extra_char = get_literal();
7186 	    stuffcharReadbuff(cap->extra_char);
7187 	    stuffcharReadbuff(ESC);
7188 	    if (virtual_active())
7189 		coladvance(getviscol());
7190 	    invoke_edit(cap, TRUE, 'v', FALSE);
7191 	}
7192     }
7193 }
7194 
7195 /*
7196  * Swap case for "~" command, when it does not work like an operator.
7197  */
7198     static void
7199 n_swapchar(cmdarg_T *cap)
7200 {
7201     long	n;
7202     pos_T	startpos;
7203     int		did_change = 0;
7204 #ifdef FEAT_NETBEANS_INTG
7205     pos_T	pos;
7206     char_u	*ptr;
7207     int		count;
7208 #endif
7209 
7210     if (checkclearopq(cap->oap))
7211 	return;
7212 
7213     if (LINEEMPTY(curwin->w_cursor.lnum) && vim_strchr(p_ww, '~') == NULL)
7214     {
7215 	clearopbeep(cap->oap);
7216 	return;
7217     }
7218 
7219     prep_redo_cmd(cap);
7220 
7221     if (u_save_cursor() == FAIL)
7222 	return;
7223 
7224     startpos = curwin->w_cursor;
7225 #ifdef FEAT_NETBEANS_INTG
7226     pos = startpos;
7227 #endif
7228     for (n = cap->count1; n > 0; --n)
7229     {
7230 	did_change |= swapchar(cap->oap->op_type, &curwin->w_cursor);
7231 	inc_cursor();
7232 	if (gchar_cursor() == NUL)
7233 	{
7234 	    if (vim_strchr(p_ww, '~') != NULL
7235 		    && curwin->w_cursor.lnum < curbuf->b_ml.ml_line_count)
7236 	    {
7237 #ifdef FEAT_NETBEANS_INTG
7238 		if (netbeans_active())
7239 		{
7240 		    if (did_change)
7241 		    {
7242 			ptr = ml_get(pos.lnum);
7243 			count = (int)STRLEN(ptr) - pos.col;
7244 			netbeans_removed(curbuf, pos.lnum, pos.col,
7245 								 (long)count);
7246 			netbeans_inserted(curbuf, pos.lnum, pos.col,
7247 							&ptr[pos.col], count);
7248 		    }
7249 		    pos.col = 0;
7250 		    pos.lnum++;
7251 		}
7252 #endif
7253 		++curwin->w_cursor.lnum;
7254 		curwin->w_cursor.col = 0;
7255 		if (n > 1)
7256 		{
7257 		    if (u_savesub(curwin->w_cursor.lnum) == FAIL)
7258 			break;
7259 		    u_clearline();
7260 		}
7261 	    }
7262 	    else
7263 		break;
7264 	}
7265     }
7266 #ifdef FEAT_NETBEANS_INTG
7267     if (did_change && netbeans_active())
7268     {
7269 	ptr = ml_get(pos.lnum);
7270 	count = curwin->w_cursor.col - pos.col;
7271 	netbeans_removed(curbuf, pos.lnum, pos.col, (long)count);
7272 	netbeans_inserted(curbuf, pos.lnum, pos.col, &ptr[pos.col], count);
7273     }
7274 #endif
7275 
7276 
7277     check_cursor();
7278     curwin->w_set_curswant = TRUE;
7279     if (did_change)
7280     {
7281 	changed_lines(startpos.lnum, startpos.col, curwin->w_cursor.lnum + 1,
7282 									  0L);
7283 	curbuf->b_op_start = startpos;
7284 	curbuf->b_op_end = curwin->w_cursor;
7285 	if (curbuf->b_op_end.col > 0)
7286 	    --curbuf->b_op_end.col;
7287     }
7288 }
7289 
7290 /*
7291  * Move cursor to mark.
7292  */
7293     static void
7294 nv_cursormark(cmdarg_T *cap, int flag, pos_T *pos)
7295 {
7296     if (check_mark(pos) == FAIL)
7297 	clearop(cap->oap);
7298     else
7299     {
7300 	if (cap->cmdchar == '\''
7301 		|| cap->cmdchar == '`'
7302 		|| cap->cmdchar == '['
7303 		|| cap->cmdchar == ']')
7304 	    setpcmark();
7305 	curwin->w_cursor = *pos;
7306 	if (flag)
7307 	    beginline(BL_WHITE | BL_FIX);
7308 	else
7309 	    check_cursor();
7310     }
7311     cap->oap->motion_type = flag ? MLINE : MCHAR;
7312     if (cap->cmdchar == '`')
7313 	cap->oap->use_reg_one = TRUE;
7314     cap->oap->inclusive = FALSE;		/* ignored if not MCHAR */
7315     curwin->w_set_curswant = TRUE;
7316 }
7317 
7318 /*
7319  * Handle commands that are operators in Visual mode.
7320  */
7321     static void
7322 v_visop(cmdarg_T *cap)
7323 {
7324     static char_u trans[] = "YyDdCcxdXdAAIIrr";
7325 
7326     /* Uppercase means linewise, except in block mode, then "D" deletes till
7327      * the end of the line, and "C" replaces till EOL */
7328     if (isupper(cap->cmdchar))
7329     {
7330 	if (VIsual_mode != Ctrl_V)
7331 	{
7332 	    VIsual_mode_orig = VIsual_mode;
7333 	    VIsual_mode = 'V';
7334 	}
7335 	else if (cap->cmdchar == 'C' || cap->cmdchar == 'D')
7336 	    curwin->w_curswant = MAXCOL;
7337     }
7338     cap->cmdchar = *(vim_strchr(trans, cap->cmdchar) + 1);
7339     nv_operator(cap);
7340 }
7341 
7342 /*
7343  * "s" and "S" commands.
7344  */
7345     static void
7346 nv_subst(cmdarg_T *cap)
7347 {
7348 #ifdef FEAT_TERMINAL
7349     /* When showing output of term_dumpdiff() swap the top and botom. */
7350     if (term_swap_diff() == OK)
7351 	return;
7352 #endif
7353 #ifdef FEAT_JOB_CHANNEL
7354     if (bt_prompt(curbuf) && !prompt_curpos_editable())
7355     {
7356 	clearopbeep(cap->oap);
7357 	return;
7358     }
7359 #endif
7360     if (VIsual_active)	/* "vs" and "vS" are the same as "vc" */
7361     {
7362 	if (cap->cmdchar == 'S')
7363 	{
7364 	    VIsual_mode_orig = VIsual_mode;
7365 	    VIsual_mode = 'V';
7366 	}
7367 	cap->cmdchar = 'c';
7368 	nv_operator(cap);
7369     }
7370     else
7371 	nv_optrans(cap);
7372 }
7373 
7374 /*
7375  * Abbreviated commands.
7376  */
7377     static void
7378 nv_abbrev(cmdarg_T *cap)
7379 {
7380     if (cap->cmdchar == K_DEL || cap->cmdchar == K_KDEL)
7381 	cap->cmdchar = 'x';		/* DEL key behaves like 'x' */
7382 
7383     /* in Visual mode these commands are operators */
7384     if (VIsual_active)
7385 	v_visop(cap);
7386     else
7387 	nv_optrans(cap);
7388 }
7389 
7390 /*
7391  * Translate a command into another command.
7392  */
7393     static void
7394 nv_optrans(cmdarg_T *cap)
7395 {
7396     static char_u *(ar[8]) = {(char_u *)"dl", (char_u *)"dh",
7397 			      (char_u *)"d$", (char_u *)"c$",
7398 			      (char_u *)"cl", (char_u *)"cc",
7399 			      (char_u *)"yy", (char_u *)":s\r"};
7400     static char_u *str = (char_u *)"xXDCsSY&";
7401 
7402     if (!checkclearopq(cap->oap))
7403     {
7404 	/* In Vi "2D" doesn't delete the next line.  Can't translate it
7405 	 * either, because "2." should also not use the count. */
7406 	if (cap->cmdchar == 'D' && vim_strchr(p_cpo, CPO_HASH) != NULL)
7407 	{
7408 	    cap->oap->start = curwin->w_cursor;
7409 	    cap->oap->op_type = OP_DELETE;
7410 #ifdef FEAT_EVAL
7411 	    set_op_var(OP_DELETE);
7412 #endif
7413 	    cap->count1 = 1;
7414 	    nv_dollar(cap);
7415 	    finish_op = TRUE;
7416 	    ResetRedobuff();
7417 	    AppendCharToRedobuff('D');
7418 	}
7419 	else
7420 	{
7421 	    if (cap->count0)
7422 		stuffnumReadbuff(cap->count0);
7423 	    stuffReadbuff(ar[(int)(vim_strchr(str, cap->cmdchar) - str)]);
7424 	}
7425     }
7426     cap->opcount = 0;
7427 }
7428 
7429 /*
7430  * "'" and "`" commands.  Also for "g'" and "g`".
7431  * cap->arg is TRUE for "'" and "g'".
7432  */
7433     static void
7434 nv_gomark(cmdarg_T *cap)
7435 {
7436     pos_T	*pos;
7437     int		c;
7438 #ifdef FEAT_FOLDING
7439     pos_T	old_cursor = curwin->w_cursor;
7440     int		old_KeyTyped = KeyTyped;    /* getting file may reset it */
7441 #endif
7442 
7443     if (cap->cmdchar == 'g')
7444 	c = cap->extra_char;
7445     else
7446 	c = cap->nchar;
7447     pos = getmark(c, (cap->oap->op_type == OP_NOP));
7448     if (pos == (pos_T *)-1)	    /* jumped to other file */
7449     {
7450 	if (cap->arg)
7451 	{
7452 	    check_cursor_lnum();
7453 	    beginline(BL_WHITE | BL_FIX);
7454 	}
7455 	else
7456 	    check_cursor();
7457     }
7458     else
7459 	nv_cursormark(cap, cap->arg, pos);
7460 
7461     /* May need to clear the coladd that a mark includes. */
7462     if (!virtual_active())
7463 	curwin->w_cursor.coladd = 0;
7464     check_cursor_col();
7465 #ifdef FEAT_FOLDING
7466     if (cap->oap->op_type == OP_NOP
7467 	    && pos != NULL
7468 	    && (pos == (pos_T *)-1 || !EQUAL_POS(old_cursor, *pos))
7469 	    && (fdo_flags & FDO_MARK)
7470 	    && old_KeyTyped)
7471 	foldOpenCursor();
7472 #endif
7473 }
7474 
7475 /*
7476  * Handle CTRL-O, CTRL-I, "g;" and "g," commands.
7477  */
7478     static void
7479 nv_pcmark(cmdarg_T *cap)
7480 {
7481 #ifdef FEAT_JUMPLIST
7482     pos_T	*pos;
7483 # ifdef FEAT_FOLDING
7484     linenr_T	lnum = curwin->w_cursor.lnum;
7485     int		old_KeyTyped = KeyTyped;    /* getting file may reset it */
7486 # endif
7487 
7488     if (!checkclearopq(cap->oap))
7489     {
7490 	if (cap->cmdchar == 'g')
7491 	    pos = movechangelist((int)cap->count1);
7492 	else
7493 	    pos = movemark((int)cap->count1);
7494 	if (pos == (pos_T *)-1)		/* jump to other file */
7495 	{
7496 	    curwin->w_set_curswant = TRUE;
7497 	    check_cursor();
7498 	}
7499 	else if (pos != NULL)		    /* can jump */
7500 	    nv_cursormark(cap, FALSE, pos);
7501 	else if (cap->cmdchar == 'g')
7502 	{
7503 	    if (curbuf->b_changelistlen == 0)
7504 		emsg(_("E664: changelist is empty"));
7505 	    else if (cap->count1 < 0)
7506 		emsg(_("E662: At start of changelist"));
7507 	    else
7508 		emsg(_("E663: At end of changelist"));
7509 	}
7510 	else
7511 	    clearopbeep(cap->oap);
7512 # ifdef FEAT_FOLDING
7513 	if (cap->oap->op_type == OP_NOP
7514 		&& (pos == (pos_T *)-1 || lnum != curwin->w_cursor.lnum)
7515 		&& (fdo_flags & FDO_MARK)
7516 		&& old_KeyTyped)
7517 	    foldOpenCursor();
7518 # endif
7519     }
7520 #else
7521     clearopbeep(cap->oap);
7522 #endif
7523 }
7524 
7525 /*
7526  * Handle '"' command.
7527  */
7528     static void
7529 nv_regname(cmdarg_T *cap)
7530 {
7531     if (checkclearop(cap->oap))
7532 	return;
7533 #ifdef FEAT_EVAL
7534     if (cap->nchar == '=')
7535 	cap->nchar = get_expr_register();
7536 #endif
7537     if (cap->nchar != NUL && valid_yank_reg(cap->nchar, FALSE))
7538     {
7539 	cap->oap->regname = cap->nchar;
7540 	cap->opcount = cap->count0;	/* remember count before '"' */
7541 #ifdef FEAT_EVAL
7542 	set_reg_var(cap->oap->regname);
7543 #endif
7544     }
7545     else
7546 	clearopbeep(cap->oap);
7547 }
7548 
7549 /*
7550  * Handle "v", "V" and "CTRL-V" commands.
7551  * Also for "gh", "gH" and "g^H" commands: Always start Select mode, cap->arg
7552  * is TRUE.
7553  * Handle CTRL-Q just like CTRL-V.
7554  */
7555     static void
7556 nv_visual(cmdarg_T *cap)
7557 {
7558     if (cap->cmdchar == Ctrl_Q)
7559 	cap->cmdchar = Ctrl_V;
7560 
7561     /* 'v', 'V' and CTRL-V can be used while an operator is pending to make it
7562      * characterwise, linewise, or blockwise. */
7563     if (cap->oap->op_type != OP_NOP)
7564     {
7565 	motion_force = cap->oap->motion_force = cap->cmdchar;
7566 	finish_op = FALSE;	/* operator doesn't finish now but later */
7567 	return;
7568     }
7569 
7570     VIsual_select = cap->arg;
7571     if (VIsual_active)	    /* change Visual mode */
7572     {
7573 	if (VIsual_mode == cap->cmdchar)    /* stop visual mode */
7574 	    end_visual_mode();
7575 	else				    /* toggle char/block mode */
7576 	{				    /*	   or char/line mode */
7577 	    VIsual_mode = cap->cmdchar;
7578 	    showmode();
7579 	}
7580 	redraw_curbuf_later(INVERTED);	    /* update the inversion */
7581     }
7582     else		    /* start Visual mode */
7583     {
7584 	check_visual_highlight();
7585 	if (cap->count0 > 0 && resel_VIsual_mode != NUL)
7586 	{
7587 	    /* use previously selected part */
7588 	    VIsual = curwin->w_cursor;
7589 
7590 	    VIsual_active = TRUE;
7591 	    VIsual_reselect = TRUE;
7592 	    if (!cap->arg)
7593 		/* start Select mode when 'selectmode' contains "cmd" */
7594 		may_start_select('c');
7595 #ifdef FEAT_MOUSE
7596 	    setmouse();
7597 #endif
7598 	    if (p_smd && msg_silent == 0)
7599 		redraw_cmdline = TRUE;	    /* show visual mode later */
7600 	    /*
7601 	     * For V and ^V, we multiply the number of lines even if there
7602 	     * was only one -- webb
7603 	     */
7604 	    if (resel_VIsual_mode != 'v' || resel_VIsual_line_count > 1)
7605 	    {
7606 		curwin->w_cursor.lnum +=
7607 				    resel_VIsual_line_count * cap->count0 - 1;
7608 		if (curwin->w_cursor.lnum > curbuf->b_ml.ml_line_count)
7609 		    curwin->w_cursor.lnum = curbuf->b_ml.ml_line_count;
7610 	    }
7611 	    VIsual_mode = resel_VIsual_mode;
7612 	    if (VIsual_mode == 'v')
7613 	    {
7614 		if (resel_VIsual_line_count <= 1)
7615 		{
7616 		    validate_virtcol();
7617 		    curwin->w_curswant = curwin->w_virtcol
7618 					+ resel_VIsual_vcol * cap->count0 - 1;
7619 		}
7620 		else
7621 		    curwin->w_curswant = resel_VIsual_vcol;
7622 		coladvance(curwin->w_curswant);
7623 	    }
7624 	    if (resel_VIsual_vcol == MAXCOL)
7625 	    {
7626 		curwin->w_curswant = MAXCOL;
7627 		coladvance((colnr_T)MAXCOL);
7628 	    }
7629 	    else if (VIsual_mode == Ctrl_V)
7630 	    {
7631 		validate_virtcol();
7632 		curwin->w_curswant = curwin->w_virtcol
7633 					+ resel_VIsual_vcol * cap->count0 - 1;
7634 		coladvance(curwin->w_curswant);
7635 	    }
7636 	    else
7637 		curwin->w_set_curswant = TRUE;
7638 	    redraw_curbuf_later(INVERTED);	/* show the inversion */
7639 	}
7640 	else
7641 	{
7642 	    if (!cap->arg)
7643 		/* start Select mode when 'selectmode' contains "cmd" */
7644 		may_start_select('c');
7645 	    n_start_visual_mode(cap->cmdchar);
7646 	    if (VIsual_mode != 'V' && *p_sel == 'e')
7647 		++cap->count1;  /* include one more char */
7648 	    if (cap->count0 > 0 && --cap->count1 > 0)
7649 	    {
7650 		/* With a count select that many characters or lines. */
7651 		if (VIsual_mode == 'v' || VIsual_mode == Ctrl_V)
7652 		    nv_right(cap);
7653 		else if (VIsual_mode == 'V')
7654 		    nv_down(cap);
7655 	    }
7656 	}
7657     }
7658 }
7659 
7660 /*
7661  * Start selection for Shift-movement keys.
7662  */
7663     void
7664 start_selection(void)
7665 {
7666     /* if 'selectmode' contains "key", start Select mode */
7667     may_start_select('k');
7668     n_start_visual_mode('v');
7669 }
7670 
7671 /*
7672  * Start Select mode, if "c" is in 'selectmode' and not in a mapping or menu.
7673  */
7674     void
7675 may_start_select(int c)
7676 {
7677     VIsual_select = (stuff_empty() && typebuf_typed()
7678 		    && (vim_strchr(p_slm, c) != NULL));
7679 }
7680 
7681 /*
7682  * Start Visual mode "c".
7683  * Should set VIsual_select before calling this.
7684  */
7685     static void
7686 n_start_visual_mode(int c)
7687 {
7688 #ifdef FEAT_CONCEAL
7689     /* Check for redraw before changing the state. */
7690     conceal_check_cursor_line();
7691 #endif
7692 
7693     VIsual_mode = c;
7694     VIsual_active = TRUE;
7695     VIsual_reselect = TRUE;
7696 
7697     // Corner case: the 0 position in a tab may change when going into
7698     // virtualedit.  Recalculate curwin->w_cursor to avoid bad hilighting.
7699     if (c == Ctrl_V && (ve_flags & VE_BLOCK) && gchar_cursor() == TAB)
7700     {
7701 	validate_virtcol();
7702 	coladvance(curwin->w_virtcol);
7703     }
7704     VIsual = curwin->w_cursor;
7705 
7706 #ifdef FEAT_FOLDING
7707     foldAdjustVisual();
7708 #endif
7709 
7710 #ifdef FEAT_MOUSE
7711     setmouse();
7712 #endif
7713 #ifdef FEAT_CONCEAL
7714     /* Check for redraw after changing the state. */
7715     conceal_check_cursor_line();
7716 #endif
7717 
7718     if (p_smd && msg_silent == 0)
7719 	redraw_cmdline = TRUE;	/* show visual mode later */
7720 #ifdef FEAT_CLIPBOARD
7721     /* Make sure the clipboard gets updated.  Needed because start and
7722      * end may still be the same, and the selection needs to be owned */
7723     clip_star.vmode = NUL;
7724 #endif
7725 
7726     /* Only need to redraw this line, unless still need to redraw an old
7727      * Visual area (when 'lazyredraw' is set). */
7728     if (curwin->w_redr_type < INVERTED)
7729     {
7730 	curwin->w_old_cursor_lnum = curwin->w_cursor.lnum;
7731 	curwin->w_old_visual_lnum = curwin->w_cursor.lnum;
7732     }
7733 }
7734 
7735 
7736 /*
7737  * CTRL-W: Window commands
7738  */
7739     static void
7740 nv_window(cmdarg_T *cap)
7741 {
7742     if (cap->nchar == ':')
7743     {
7744 	/* "CTRL-W :" is the same as typing ":"; useful in a terminal window */
7745 	cap->cmdchar = ':';
7746 	cap->nchar = NUL;
7747 	nv_colon(cap);
7748     }
7749     else if (!checkclearop(cap->oap))
7750 	do_window(cap->nchar, cap->count0, NUL); /* everything is in window.c */
7751 }
7752 
7753 /*
7754  * CTRL-Z: Suspend
7755  */
7756     static void
7757 nv_suspend(cmdarg_T *cap)
7758 {
7759     clearop(cap->oap);
7760     if (VIsual_active)
7761 	end_visual_mode();		/* stop Visual mode */
7762     do_cmdline_cmd((char_u *)"st");
7763 }
7764 
7765 /*
7766  * Commands starting with "g".
7767  */
7768     static void
7769 nv_g_cmd(cmdarg_T *cap)
7770 {
7771     oparg_T	*oap = cap->oap;
7772     pos_T	tpos;
7773     int		i;
7774     int		flag = FALSE;
7775 
7776     switch (cap->nchar)
7777     {
7778     case Ctrl_A:
7779     case Ctrl_X:
7780 #ifdef MEM_PROFILE
7781     /*
7782      * "g^A": dump log of used memory.
7783      */
7784 	if (!VIsual_active && cap->nchar == Ctrl_A)
7785 	    vim_mem_profile_dump();
7786 	else
7787 #endif
7788     /*
7789      * "g^A/g^X": sequentially increment visually selected region
7790      */
7791 	     if (VIsual_active)
7792 	{
7793 	    cap->arg = TRUE;
7794 	    cap->cmdchar = cap->nchar;
7795 	    cap->nchar = NUL;
7796 	    nv_addsub(cap);
7797 	}
7798 	else
7799 	    clearopbeep(oap);
7800 	break;
7801 
7802     /*
7803      * "gR": Enter virtual replace mode.
7804      */
7805     case 'R':
7806 	cap->arg = TRUE;
7807 	nv_Replace(cap);
7808 	break;
7809 
7810     case 'r':
7811 	nv_vreplace(cap);
7812 	break;
7813 
7814     case '&':
7815 	do_cmdline_cmd((char_u *)"%s//~/&");
7816 	break;
7817 
7818     /*
7819      * "gv": Reselect the previous Visual area.  If Visual already active,
7820      *	     exchange previous and current Visual area.
7821      */
7822     case 'v':
7823 	if (checkclearop(oap))
7824 	    break;
7825 
7826 	if (	   curbuf->b_visual.vi_start.lnum == 0
7827 		|| curbuf->b_visual.vi_start.lnum > curbuf->b_ml.ml_line_count
7828 		|| curbuf->b_visual.vi_end.lnum == 0)
7829 	    beep_flush();
7830 	else
7831 	{
7832 	    /* set w_cursor to the start of the Visual area, tpos to the end */
7833 	    if (VIsual_active)
7834 	    {
7835 		i = VIsual_mode;
7836 		VIsual_mode = curbuf->b_visual.vi_mode;
7837 		curbuf->b_visual.vi_mode = i;
7838 # ifdef FEAT_EVAL
7839 		curbuf->b_visual_mode_eval = i;
7840 # endif
7841 		i = curwin->w_curswant;
7842 		curwin->w_curswant = curbuf->b_visual.vi_curswant;
7843 		curbuf->b_visual.vi_curswant = i;
7844 
7845 		tpos = curbuf->b_visual.vi_end;
7846 		curbuf->b_visual.vi_end = curwin->w_cursor;
7847 		curwin->w_cursor = curbuf->b_visual.vi_start;
7848 		curbuf->b_visual.vi_start = VIsual;
7849 	    }
7850 	    else
7851 	    {
7852 		VIsual_mode = curbuf->b_visual.vi_mode;
7853 		curwin->w_curswant = curbuf->b_visual.vi_curswant;
7854 		tpos = curbuf->b_visual.vi_end;
7855 		curwin->w_cursor = curbuf->b_visual.vi_start;
7856 	    }
7857 
7858 	    VIsual_active = TRUE;
7859 	    VIsual_reselect = TRUE;
7860 
7861 	    /* Set Visual to the start and w_cursor to the end of the Visual
7862 	     * area.  Make sure they are on an existing character. */
7863 	    check_cursor();
7864 	    VIsual = curwin->w_cursor;
7865 	    curwin->w_cursor = tpos;
7866 	    check_cursor();
7867 	    update_topline();
7868 	    /*
7869 	     * When called from normal "g" command: start Select mode when
7870 	     * 'selectmode' contains "cmd".  When called for K_SELECT, always
7871 	     * start Select mode.
7872 	     */
7873 	    if (cap->arg)
7874 		VIsual_select = TRUE;
7875 	    else
7876 		may_start_select('c');
7877 #ifdef FEAT_MOUSE
7878 	    setmouse();
7879 #endif
7880 #ifdef FEAT_CLIPBOARD
7881 	    /* Make sure the clipboard gets updated.  Needed because start and
7882 	     * end are still the same, and the selection needs to be owned */
7883 	    clip_star.vmode = NUL;
7884 #endif
7885 	    redraw_curbuf_later(INVERTED);
7886 	    showmode();
7887 	}
7888 	break;
7889     /*
7890      * "gV": Don't reselect the previous Visual area after a Select mode
7891      *	     mapping of menu.
7892      */
7893     case 'V':
7894 	VIsual_reselect = FALSE;
7895 	break;
7896 
7897     /*
7898      * "gh":  start Select mode.
7899      * "gH":  start Select line mode.
7900      * "g^H": start Select block mode.
7901      */
7902     case K_BS:
7903 	cap->nchar = Ctrl_H;
7904 	/* FALLTHROUGH */
7905     case 'h':
7906     case 'H':
7907     case Ctrl_H:
7908 # ifdef EBCDIC
7909 	/* EBCDIC: 'v'-'h' != '^v'-'^h' */
7910 	if (cap->nchar == Ctrl_H)
7911 	    cap->cmdchar = Ctrl_V;
7912 	else
7913 # endif
7914 	cap->cmdchar = cap->nchar + ('v' - 'h');
7915 	cap->arg = TRUE;
7916 	nv_visual(cap);
7917 	break;
7918 
7919     /* "gn", "gN" visually select next/previous search match
7920      * "gn" selects next match
7921      * "gN" selects previous match
7922      */
7923     case 'N':
7924     case 'n':
7925 	if (!current_search(cap->count1, cap->nchar == 'n'))
7926 	    clearopbeep(oap);
7927 	break;
7928 
7929     /*
7930      * "gj" and "gk" two new funny movement keys -- up and down
7931      * movement based on *screen* line rather than *file* line.
7932      */
7933     case 'j':
7934     case K_DOWN:
7935 	/* with 'nowrap' it works just like the normal "j" command; also when
7936 	 * in a closed fold */
7937 	if (!curwin->w_p_wrap
7938 #ifdef FEAT_FOLDING
7939 		|| hasFolding(curwin->w_cursor.lnum, NULL, NULL)
7940 #endif
7941 		)
7942 	{
7943 	    oap->motion_type = MLINE;
7944 	    i = cursor_down(cap->count1, oap->op_type == OP_NOP);
7945 	}
7946 	else
7947 	    i = nv_screengo(oap, FORWARD, cap->count1);
7948 	if (i == FAIL)
7949 	    clearopbeep(oap);
7950 	break;
7951 
7952     case 'k':
7953     case K_UP:
7954 	/* with 'nowrap' it works just like the normal "k" command; also when
7955 	 * in a closed fold */
7956 	if (!curwin->w_p_wrap
7957 #ifdef FEAT_FOLDING
7958 		|| hasFolding(curwin->w_cursor.lnum, NULL, NULL)
7959 #endif
7960 	   )
7961 	{
7962 	    oap->motion_type = MLINE;
7963 	    i = cursor_up(cap->count1, oap->op_type == OP_NOP);
7964 	}
7965 	else
7966 	    i = nv_screengo(oap, BACKWARD, cap->count1);
7967 	if (i == FAIL)
7968 	    clearopbeep(oap);
7969 	break;
7970 
7971     /*
7972      * "gJ": join two lines without inserting a space.
7973      */
7974     case 'J':
7975 	nv_join(cap);
7976 	break;
7977 
7978     /*
7979      * "g0", "g^" and "g$": Like "0", "^" and "$" but for screen lines.
7980      * "gm": middle of "g0" and "g$".
7981      */
7982     case '^':
7983 	flag = TRUE;
7984 	/* FALLTHROUGH */
7985 
7986     case '0':
7987     case 'm':
7988     case K_HOME:
7989     case K_KHOME:
7990 	oap->motion_type = MCHAR;
7991 	oap->inclusive = FALSE;
7992 	if (curwin->w_p_wrap && curwin->w_width != 0)
7993 	{
7994 	    int		width1 = curwin->w_width - curwin_col_off();
7995 	    int		width2 = width1 + curwin_col_off2();
7996 
7997 	    validate_virtcol();
7998 	    i = 0;
7999 	    if (curwin->w_virtcol >= (colnr_T)width1 && width2 > 0)
8000 		i = (curwin->w_virtcol - width1) / width2 * width2 + width1;
8001 	}
8002 	else
8003 	    i = curwin->w_leftcol;
8004 	/* Go to the middle of the screen line.  When 'number' or
8005 	 * 'relativenumber' is on and lines are wrapping the middle can be more
8006 	 * to the left. */
8007 	if (cap->nchar == 'm')
8008 	    i += (curwin->w_width - curwin_col_off()
8009 		    + ((curwin->w_p_wrap && i > 0)
8010 			? curwin_col_off2() : 0)) / 2;
8011 	coladvance((colnr_T)i);
8012 	if (flag)
8013 	{
8014 	    do
8015 		i = gchar_cursor();
8016 	    while (VIM_ISWHITE(i) && oneright() == OK);
8017 	    curwin->w_valid &= ~VALID_WCOL;
8018 	}
8019 	curwin->w_set_curswant = TRUE;
8020 	break;
8021 
8022     case '_':
8023 	/* "g_": to the last non-blank character in the line or <count> lines
8024 	 * downward. */
8025 	cap->oap->motion_type = MCHAR;
8026 	cap->oap->inclusive = TRUE;
8027 	curwin->w_curswant = MAXCOL;
8028 	if (cursor_down((long)(cap->count1 - 1),
8029 					 cap->oap->op_type == OP_NOP) == FAIL)
8030 	    clearopbeep(cap->oap);
8031 	else
8032 	{
8033 	    char_u  *ptr = ml_get_curline();
8034 
8035 	    /* In Visual mode we may end up after the line. */
8036 	    if (curwin->w_cursor.col > 0 && ptr[curwin->w_cursor.col] == NUL)
8037 		--curwin->w_cursor.col;
8038 
8039 	    /* Decrease the cursor column until it's on a non-blank. */
8040 	    while (curwin->w_cursor.col > 0
8041 				    && VIM_ISWHITE(ptr[curwin->w_cursor.col]))
8042 		--curwin->w_cursor.col;
8043 	    curwin->w_set_curswant = TRUE;
8044 	    adjust_for_sel(cap);
8045 	}
8046 	break;
8047 
8048     case '$':
8049     case K_END:
8050     case K_KEND:
8051 	{
8052 	    int col_off = curwin_col_off();
8053 
8054 	    oap->motion_type = MCHAR;
8055 	    oap->inclusive = TRUE;
8056 	    if (curwin->w_p_wrap && curwin->w_width != 0)
8057 	    {
8058 		curwin->w_curswant = MAXCOL;    /* so we stay at the end */
8059 		if (cap->count1 == 1)
8060 		{
8061 		    int		width1 = curwin->w_width - col_off;
8062 		    int		width2 = width1 + curwin_col_off2();
8063 
8064 		    validate_virtcol();
8065 		    i = width1 - 1;
8066 		    if (curwin->w_virtcol >= (colnr_T)width1)
8067 			i += ((curwin->w_virtcol - width1) / width2 + 1)
8068 								     * width2;
8069 		    coladvance((colnr_T)i);
8070 
8071 		    /* Make sure we stick in this column. */
8072 		    validate_virtcol();
8073 		    curwin->w_curswant = curwin->w_virtcol;
8074 		    curwin->w_set_curswant = FALSE;
8075 		    if (curwin->w_cursor.col > 0 && curwin->w_p_wrap)
8076 		    {
8077 			/*
8078 			 * Check for landing on a character that got split at
8079 			 * the end of the line.  We do not want to advance to
8080 			 * the next screen line.
8081 			 */
8082 			if (curwin->w_virtcol > (colnr_T)i)
8083 			    --curwin->w_cursor.col;
8084 		    }
8085 		}
8086 		else if (nv_screengo(oap, FORWARD, cap->count1 - 1) == FAIL)
8087 		    clearopbeep(oap);
8088 	    }
8089 	    else
8090 	    {
8091 		i = curwin->w_leftcol + curwin->w_width - col_off - 1;
8092 		coladvance((colnr_T)i);
8093 
8094 		/* Make sure we stick in this column. */
8095 		validate_virtcol();
8096 		curwin->w_curswant = curwin->w_virtcol;
8097 		curwin->w_set_curswant = FALSE;
8098 	    }
8099 	}
8100 	break;
8101 
8102     /*
8103      * "g*" and "g#", like "*" and "#" but without using "\<" and "\>"
8104      */
8105     case '*':
8106     case '#':
8107 #if POUND != '#'
8108     case POUND:		/* pound sign (sometimes equal to '#') */
8109 #endif
8110     case Ctrl_RSB:		/* :tag or :tselect for current identifier */
8111     case ']':			/* :tselect for current identifier */
8112 	nv_ident(cap);
8113 	break;
8114 
8115     /*
8116      * ge and gE: go back to end of word
8117      */
8118     case 'e':
8119     case 'E':
8120 	oap->motion_type = MCHAR;
8121 	curwin->w_set_curswant = TRUE;
8122 	oap->inclusive = TRUE;
8123 	if (bckend_word(cap->count1, cap->nchar == 'E', FALSE) == FAIL)
8124 	    clearopbeep(oap);
8125 	break;
8126 
8127     /*
8128      * "g CTRL-G": display info about cursor position
8129      */
8130     case Ctrl_G:
8131 	cursor_pos_info(NULL);
8132 	break;
8133 
8134     /*
8135      * "gi": start Insert at the last position.
8136      */
8137     case 'i':
8138 	if (curbuf->b_last_insert.lnum != 0)
8139 	{
8140 	    curwin->w_cursor = curbuf->b_last_insert;
8141 	    check_cursor_lnum();
8142 	    i = (int)STRLEN(ml_get_curline());
8143 	    if (curwin->w_cursor.col > (colnr_T)i)
8144 	    {
8145 		if (virtual_active())
8146 		    curwin->w_cursor.coladd += curwin->w_cursor.col - i;
8147 		curwin->w_cursor.col = i;
8148 	    }
8149 	}
8150 	cap->cmdchar = 'i';
8151 	nv_edit(cap);
8152 	break;
8153 
8154     /*
8155      * "gI": Start insert in column 1.
8156      */
8157     case 'I':
8158 	beginline(0);
8159 	if (!checkclearopq(oap))
8160 	    invoke_edit(cap, FALSE, 'g', FALSE);
8161 	break;
8162 
8163 #ifdef FEAT_SEARCHPATH
8164     /*
8165      * "gf": goto file, edit file under cursor
8166      * "]f" and "[f": can also be used.
8167      */
8168     case 'f':
8169     case 'F':
8170 	nv_gotofile(cap);
8171 	break;
8172 #endif
8173 
8174 	/* "g'm" and "g`m": jump to mark without setting pcmark */
8175     case '\'':
8176 	cap->arg = TRUE;
8177 	/* FALLTHROUGH */
8178     case '`':
8179 	nv_gomark(cap);
8180 	break;
8181 
8182     /*
8183      * "gs": Goto sleep.
8184      */
8185     case 's':
8186 	do_sleep(cap->count1 * 1000L);
8187 	break;
8188 
8189     /*
8190      * "ga": Display the ascii value of the character under the
8191      * cursor.	It is displayed in decimal, hex, and octal. -- webb
8192      */
8193     case 'a':
8194 	do_ascii(NULL);
8195 	break;
8196 
8197     /*
8198      * "g8": Display the bytes used for the UTF-8 character under the
8199      * cursor.	It is displayed in hex.
8200      * "8g8" finds illegal byte sequence.
8201      */
8202     case '8':
8203 	if (cap->count0 == 8)
8204 	    utf_find_illegal();
8205 	else
8206 	    show_utf8();
8207 	break;
8208 
8209     /* "g<": show scrollback text */
8210     case '<':
8211 	show_sb_text();
8212 	break;
8213 
8214     /*
8215      * "gg": Goto the first line in file.  With a count it goes to
8216      * that line number like for "G". -- webb
8217      */
8218     case 'g':
8219 	cap->arg = FALSE;
8220 	nv_goto(cap);
8221 	break;
8222 
8223     /*
8224      *	 Two-character operators:
8225      *	 "gq"	    Format text
8226      *	 "gw"	    Format text and keep cursor position
8227      *	 "g~"	    Toggle the case of the text.
8228      *	 "gu"	    Change text to lower case.
8229      *	 "gU"	    Change text to upper case.
8230      *   "g?"	    rot13 encoding
8231      *   "g@"	    call 'operatorfunc'
8232      */
8233     case 'q':
8234     case 'w':
8235 	oap->cursor_start = curwin->w_cursor;
8236 	/* FALLTHROUGH */
8237     case '~':
8238     case 'u':
8239     case 'U':
8240     case '?':
8241     case '@':
8242 	nv_operator(cap);
8243 	break;
8244 
8245     /*
8246      * "gd": Find first occurrence of pattern under the cursor in the
8247      *	 current function
8248      * "gD": idem, but in the current file.
8249      */
8250     case 'd':
8251     case 'D':
8252 	nv_gd(oap, cap->nchar, (int)cap->count0);
8253 	break;
8254 
8255 #ifdef FEAT_MOUSE
8256     /*
8257      * g<*Mouse> : <C-*mouse>
8258      */
8259     case K_MIDDLEMOUSE:
8260     case K_MIDDLEDRAG:
8261     case K_MIDDLERELEASE:
8262     case K_LEFTMOUSE:
8263     case K_LEFTDRAG:
8264     case K_LEFTRELEASE:
8265     case K_MOUSEMOVE:
8266     case K_RIGHTMOUSE:
8267     case K_RIGHTDRAG:
8268     case K_RIGHTRELEASE:
8269     case K_X1MOUSE:
8270     case K_X1DRAG:
8271     case K_X1RELEASE:
8272     case K_X2MOUSE:
8273     case K_X2DRAG:
8274     case K_X2RELEASE:
8275 	mod_mask = MOD_MASK_CTRL;
8276 	(void)do_mouse(oap, cap->nchar, BACKWARD, cap->count1, 0);
8277 	break;
8278 #endif
8279 
8280     case K_IGNORE:
8281 	break;
8282 
8283     /*
8284      * "gP" and "gp": same as "P" and "p" but leave cursor just after new text
8285      */
8286     case 'p':
8287     case 'P':
8288 	nv_put(cap);
8289 	break;
8290 
8291 #ifdef FEAT_BYTEOFF
8292     /* "go": goto byte count from start of buffer */
8293     case 'o':
8294 	goto_byte(cap->count0);
8295 	break;
8296 #endif
8297 
8298     /* "gQ": improved Ex mode */
8299     case 'Q':
8300 	if (text_locked())
8301 	{
8302 	    clearopbeep(cap->oap);
8303 	    text_locked_msg();
8304 	    break;
8305 	}
8306 
8307 	if (!checkclearopq(oap))
8308 	    do_exmode(TRUE);
8309 	break;
8310 
8311 #ifdef FEAT_JUMPLIST
8312     case ',':
8313 	nv_pcmark(cap);
8314 	break;
8315 
8316     case ';':
8317 	cap->count1 = -cap->count1;
8318 	nv_pcmark(cap);
8319 	break;
8320 #endif
8321 
8322     case 't':
8323 	if (!checkclearop(oap))
8324 	    goto_tabpage((int)cap->count0);
8325 	break;
8326     case 'T':
8327 	if (!checkclearop(oap))
8328 	    goto_tabpage(-(int)cap->count1);
8329 	break;
8330 
8331     case '+':
8332     case '-': /* "g+" and "g-": undo or redo along the timeline */
8333 	if (!checkclearopq(oap))
8334 	    undo_time(cap->nchar == '-' ? -cap->count1 : cap->count1,
8335 							 FALSE, FALSE, FALSE);
8336 	break;
8337 
8338     default:
8339 	clearopbeep(oap);
8340 	break;
8341     }
8342 }
8343 
8344 /*
8345  * Handle "o" and "O" commands.
8346  */
8347     static void
8348 n_opencmd(cmdarg_T *cap)
8349 {
8350 #ifdef FEAT_CONCEAL
8351     linenr_T	oldline = curwin->w_cursor.lnum;
8352 #endif
8353 
8354     if (!checkclearopq(cap->oap))
8355     {
8356 #ifdef FEAT_FOLDING
8357 	if (cap->cmdchar == 'O')
8358 	    /* Open above the first line of a folded sequence of lines */
8359 	    (void)hasFolding(curwin->w_cursor.lnum,
8360 						&curwin->w_cursor.lnum, NULL);
8361 	else
8362 	    /* Open below the last line of a folded sequence of lines */
8363 	    (void)hasFolding(curwin->w_cursor.lnum,
8364 						NULL, &curwin->w_cursor.lnum);
8365 #endif
8366 	if (u_save((linenr_T)(curwin->w_cursor.lnum -
8367 					       (cap->cmdchar == 'O' ? 1 : 0)),
8368 		   (linenr_T)(curwin->w_cursor.lnum +
8369 					       (cap->cmdchar == 'o' ? 1 : 0))
8370 		       ) == OK
8371 		&& open_line(cap->cmdchar == 'O' ? BACKWARD : FORWARD,
8372 #ifdef FEAT_COMMENTS
8373 		    has_format_option(FO_OPEN_COMS) ? OPENLINE_DO_COM :
8374 #endif
8375 		    0, 0) == OK)
8376 	{
8377 #ifdef FEAT_CONCEAL
8378 	    if (curwin->w_p_cole > 0 && oldline != curwin->w_cursor.lnum)
8379 		redrawWinline(curwin, oldline);
8380 #endif
8381 #ifdef FEAT_SYN_HL
8382 	    if (curwin->w_p_cul)
8383 		/* force redraw of cursorline */
8384 		curwin->w_valid &= ~VALID_CROW;
8385 #endif
8386 	    /* When '#' is in 'cpoptions' ignore the count. */
8387 	    if (vim_strchr(p_cpo, CPO_HASH) != NULL)
8388 		cap->count1 = 1;
8389 	    invoke_edit(cap, FALSE, cap->cmdchar, TRUE);
8390 	}
8391     }
8392 }
8393 
8394 /*
8395  * "." command: redo last change.
8396  */
8397     static void
8398 nv_dot(cmdarg_T *cap)
8399 {
8400     if (!checkclearopq(cap->oap))
8401     {
8402 	/*
8403 	 * If "restart_edit" is TRUE, the last but one command is repeated
8404 	 * instead of the last command (inserting text). This is used for
8405 	 * CTRL-O <.> in insert mode.
8406 	 */
8407 	if (start_redo(cap->count0, restart_edit != 0 && !arrow_used) == FAIL)
8408 	    clearopbeep(cap->oap);
8409     }
8410 }
8411 
8412 /*
8413  * CTRL-R: undo undo
8414  */
8415     static void
8416 nv_redo(cmdarg_T *cap)
8417 {
8418     if (!checkclearopq(cap->oap))
8419     {
8420 	u_redo((int)cap->count1);
8421 	curwin->w_set_curswant = TRUE;
8422     }
8423 }
8424 
8425 /*
8426  * Handle "U" command.
8427  */
8428     static void
8429 nv_Undo(cmdarg_T *cap)
8430 {
8431     /* In Visual mode and typing "gUU" triggers an operator */
8432     if (cap->oap->op_type == OP_UPPER || VIsual_active)
8433     {
8434 	/* translate "gUU" to "gUgU" */
8435 	cap->cmdchar = 'g';
8436 	cap->nchar = 'U';
8437 	nv_operator(cap);
8438     }
8439     else if (!checkclearopq(cap->oap))
8440     {
8441 	u_undoline();
8442 	curwin->w_set_curswant = TRUE;
8443     }
8444 }
8445 
8446 /*
8447  * '~' command: If tilde is not an operator and Visual is off: swap case of a
8448  * single character.
8449  */
8450     static void
8451 nv_tilde(cmdarg_T *cap)
8452 {
8453     if (!p_to && !VIsual_active && cap->oap->op_type != OP_TILDE)
8454     {
8455 #ifdef FEAT_JOB_CHANNEL
8456 	if (bt_prompt(curbuf) && !prompt_curpos_editable())
8457 	{
8458 	    clearopbeep(cap->oap);
8459 	    return;
8460 	}
8461 #endif
8462 	n_swapchar(cap);
8463     }
8464     else
8465 	nv_operator(cap);
8466 }
8467 
8468 /*
8469  * Handle an operator command.
8470  * The actual work is done by do_pending_operator().
8471  */
8472     static void
8473 nv_operator(cmdarg_T *cap)
8474 {
8475     int	    op_type;
8476 
8477     op_type = get_op_type(cap->cmdchar, cap->nchar);
8478 #ifdef FEAT_JOB_CHANNEL
8479     if (bt_prompt(curbuf) && op_is_change(op_type) && !prompt_curpos_editable())
8480     {
8481 	clearopbeep(cap->oap);
8482 	return;
8483     }
8484 #endif
8485 
8486     if (op_type == cap->oap->op_type)	    /* double operator works on lines */
8487 	nv_lineop(cap);
8488     else if (!checkclearop(cap->oap))
8489     {
8490 	cap->oap->start = curwin->w_cursor;
8491 	cap->oap->op_type = op_type;
8492 #ifdef FEAT_EVAL
8493 	set_op_var(op_type);
8494 #endif
8495     }
8496 }
8497 
8498 #ifdef FEAT_EVAL
8499 /*
8500  * Set v:operator to the characters for "optype".
8501  */
8502     static void
8503 set_op_var(int optype)
8504 {
8505     char_u	opchars[3];
8506 
8507     if (optype == OP_NOP)
8508 	set_vim_var_string(VV_OP, NULL, 0);
8509     else
8510     {
8511 	opchars[0] = get_op_char(optype);
8512 	opchars[1] = get_extra_op_char(optype);
8513 	opchars[2] = NUL;
8514 	set_vim_var_string(VV_OP, opchars, -1);
8515     }
8516 }
8517 #endif
8518 
8519 /*
8520  * Handle linewise operator "dd", "yy", etc.
8521  *
8522  * "_" is is a strange motion command that helps make operators more logical.
8523  * It is actually implemented, but not documented in the real Vi.  This motion
8524  * command actually refers to "the current line".  Commands like "dd" and "yy"
8525  * are really an alternate form of "d_" and "y_".  It does accept a count, so
8526  * "d3_" works to delete 3 lines.
8527  */
8528     static void
8529 nv_lineop(cmdarg_T *cap)
8530 {
8531     cap->oap->motion_type = MLINE;
8532     if (cursor_down(cap->count1 - 1L, cap->oap->op_type == OP_NOP) == FAIL)
8533 	clearopbeep(cap->oap);
8534     else if (  (cap->oap->op_type == OP_DELETE /* only with linewise motions */
8535 		&& cap->oap->motion_force != 'v'
8536 		&& cap->oap->motion_force != Ctrl_V)
8537 	    || cap->oap->op_type == OP_LSHIFT
8538 	    || cap->oap->op_type == OP_RSHIFT)
8539 	beginline(BL_SOL | BL_FIX);
8540     else if (cap->oap->op_type != OP_YANK)	/* 'Y' does not move cursor */
8541 	beginline(BL_WHITE | BL_FIX);
8542 }
8543 
8544 /*
8545  * <Home> command.
8546  */
8547     static void
8548 nv_home(cmdarg_T *cap)
8549 {
8550     /* CTRL-HOME is like "gg" */
8551     if (mod_mask & MOD_MASK_CTRL)
8552 	nv_goto(cap);
8553     else
8554     {
8555 	cap->count0 = 1;
8556 	nv_pipe(cap);
8557     }
8558     ins_at_eol = FALSE;	    /* Don't move cursor past eol (only necessary in a
8559 			       one-character line). */
8560 }
8561 
8562 /*
8563  * "|" command.
8564  */
8565     static void
8566 nv_pipe(cmdarg_T *cap)
8567 {
8568     cap->oap->motion_type = MCHAR;
8569     cap->oap->inclusive = FALSE;
8570     beginline(0);
8571     if (cap->count0 > 0)
8572     {
8573 	coladvance((colnr_T)(cap->count0 - 1));
8574 	curwin->w_curswant = (colnr_T)(cap->count0 - 1);
8575     }
8576     else
8577 	curwin->w_curswant = 0;
8578     /* keep curswant at the column where we wanted to go, not where
8579      * we ended; differs if line is too short */
8580     curwin->w_set_curswant = FALSE;
8581 }
8582 
8583 /*
8584  * Handle back-word command "b" and "B".
8585  * cap->arg is 1 for "B"
8586  */
8587     static void
8588 nv_bck_word(cmdarg_T *cap)
8589 {
8590     cap->oap->motion_type = MCHAR;
8591     cap->oap->inclusive = FALSE;
8592     curwin->w_set_curswant = TRUE;
8593     if (bck_word(cap->count1, cap->arg, FALSE) == FAIL)
8594 	clearopbeep(cap->oap);
8595 #ifdef FEAT_FOLDING
8596     else if ((fdo_flags & FDO_HOR) && KeyTyped && cap->oap->op_type == OP_NOP)
8597 	foldOpenCursor();
8598 #endif
8599 }
8600 
8601 /*
8602  * Handle word motion commands "e", "E", "w" and "W".
8603  * cap->arg is TRUE for "E" and "W".
8604  */
8605     static void
8606 nv_wordcmd(cmdarg_T *cap)
8607 {
8608     int		n;
8609     int		word_end;
8610     int		flag = FALSE;
8611     pos_T	startpos = curwin->w_cursor;
8612 
8613     /*
8614      * Set inclusive for the "E" and "e" command.
8615      */
8616     if (cap->cmdchar == 'e' || cap->cmdchar == 'E')
8617 	word_end = TRUE;
8618     else
8619 	word_end = FALSE;
8620     cap->oap->inclusive = word_end;
8621 
8622     /*
8623      * "cw" and "cW" are a special case.
8624      */
8625     if (!word_end && cap->oap->op_type == OP_CHANGE)
8626     {
8627 	n = gchar_cursor();
8628 	if (n != NUL)			/* not an empty line */
8629 	{
8630 	    if (VIM_ISWHITE(n))
8631 	    {
8632 		/*
8633 		 * Reproduce a funny Vi behaviour: "cw" on a blank only
8634 		 * changes one character, not all blanks until the start of
8635 		 * the next word.  Only do this when the 'w' flag is included
8636 		 * in 'cpoptions'.
8637 		 */
8638 		if (cap->count1 == 1 && vim_strchr(p_cpo, CPO_CW) != NULL)
8639 		{
8640 		    cap->oap->inclusive = TRUE;
8641 		    cap->oap->motion_type = MCHAR;
8642 		    return;
8643 		}
8644 	    }
8645 	    else
8646 	    {
8647 		/*
8648 		 * This is a little strange. To match what the real Vi does,
8649 		 * we effectively map 'cw' to 'ce', and 'cW' to 'cE', provided
8650 		 * that we are not on a space or a TAB.  This seems impolite
8651 		 * at first, but it's really more what we mean when we say
8652 		 * 'cw'.
8653 		 * Another strangeness: When standing on the end of a word
8654 		 * "ce" will change until the end of the next word, but "cw"
8655 		 * will change only one character! This is done by setting
8656 		 * flag.
8657 		 */
8658 		cap->oap->inclusive = TRUE;
8659 		word_end = TRUE;
8660 		flag = TRUE;
8661 	    }
8662 	}
8663     }
8664 
8665     cap->oap->motion_type = MCHAR;
8666     curwin->w_set_curswant = TRUE;
8667     if (word_end)
8668 	n = end_word(cap->count1, cap->arg, flag, FALSE);
8669     else
8670 	n = fwd_word(cap->count1, cap->arg, cap->oap->op_type != OP_NOP);
8671 
8672     /* Don't leave the cursor on the NUL past the end of line. Unless we
8673      * didn't move it forward. */
8674     if (LT_POS(startpos, curwin->w_cursor))
8675 	adjust_cursor(cap->oap);
8676 
8677     if (n == FAIL && cap->oap->op_type == OP_NOP)
8678 	clearopbeep(cap->oap);
8679     else
8680     {
8681 	adjust_for_sel(cap);
8682 #ifdef FEAT_FOLDING
8683 	if ((fdo_flags & FDO_HOR) && KeyTyped && cap->oap->op_type == OP_NOP)
8684 	    foldOpenCursor();
8685 #endif
8686     }
8687 }
8688 
8689 /*
8690  * Used after a movement command: If the cursor ends up on the NUL after the
8691  * end of the line, may move it back to the last character and make the motion
8692  * inclusive.
8693  */
8694     static void
8695 adjust_cursor(oparg_T *oap)
8696 {
8697     /* The cursor cannot remain on the NUL when:
8698      * - the column is > 0
8699      * - not in Visual mode or 'selection' is "o"
8700      * - 'virtualedit' is not "all" and not "onemore".
8701      */
8702     if (curwin->w_cursor.col > 0 && gchar_cursor() == NUL
8703 		&& (!VIsual_active || *p_sel == 'o')
8704 		&& !virtual_active() && (ve_flags & VE_ONEMORE) == 0)
8705     {
8706 	--curwin->w_cursor.col;
8707 	/* prevent cursor from moving on the trail byte */
8708 	if (has_mbyte)
8709 	    mb_adjust_cursor();
8710 	oap->inclusive = TRUE;
8711     }
8712 }
8713 
8714 /*
8715  * "0" and "^" commands.
8716  * cap->arg is the argument for beginline().
8717  */
8718     static void
8719 nv_beginline(cmdarg_T *cap)
8720 {
8721     cap->oap->motion_type = MCHAR;
8722     cap->oap->inclusive = FALSE;
8723     beginline(cap->arg);
8724 #ifdef FEAT_FOLDING
8725     if ((fdo_flags & FDO_HOR) && KeyTyped && cap->oap->op_type == OP_NOP)
8726 	foldOpenCursor();
8727 #endif
8728     ins_at_eol = FALSE;	    /* Don't move cursor past eol (only necessary in a
8729 			       one-character line). */
8730 }
8731 
8732 /*
8733  * In exclusive Visual mode, may include the last character.
8734  */
8735     static void
8736 adjust_for_sel(cmdarg_T *cap)
8737 {
8738     if (VIsual_active && cap->oap->inclusive && *p_sel == 'e'
8739 	    && gchar_cursor() != NUL && LT_POS(VIsual, curwin->w_cursor))
8740     {
8741 	if (has_mbyte)
8742 	    inc_cursor();
8743 	else
8744 	    ++curwin->w_cursor.col;
8745 	cap->oap->inclusive = FALSE;
8746     }
8747 }
8748 
8749 /*
8750  * Exclude last character at end of Visual area for 'selection' == "exclusive".
8751  * Should check VIsual_mode before calling this.
8752  * Returns TRUE when backed up to the previous line.
8753  */
8754     static int
8755 unadjust_for_sel(void)
8756 {
8757     pos_T	*pp;
8758 
8759     if (*p_sel == 'e' && !EQUAL_POS(VIsual, curwin->w_cursor))
8760     {
8761 	if (LT_POS(VIsual, curwin->w_cursor))
8762 	    pp = &curwin->w_cursor;
8763 	else
8764 	    pp = &VIsual;
8765 	if (pp->coladd > 0)
8766 	    --pp->coladd;
8767 	else
8768 	if (pp->col > 0)
8769 	{
8770 	    --pp->col;
8771 	    mb_adjustpos(curbuf, pp);
8772 	}
8773 	else if (pp->lnum > 1)
8774 	{
8775 	    --pp->lnum;
8776 	    pp->col = (colnr_T)STRLEN(ml_get(pp->lnum));
8777 	    return TRUE;
8778 	}
8779     }
8780     return FALSE;
8781 }
8782 
8783 /*
8784  * SELECT key in Normal or Visual mode: end of Select mode mapping.
8785  */
8786     static void
8787 nv_select(cmdarg_T *cap)
8788 {
8789     if (VIsual_active)
8790 	VIsual_select = TRUE;
8791     else if (VIsual_reselect)
8792     {
8793 	cap->nchar = 'v';	    /* fake "gv" command */
8794 	cap->arg = TRUE;
8795 	nv_g_cmd(cap);
8796     }
8797 }
8798 
8799 
8800 /*
8801  * "G", "gg", CTRL-END, CTRL-HOME.
8802  * cap->arg is TRUE for "G".
8803  */
8804     static void
8805 nv_goto(cmdarg_T *cap)
8806 {
8807     linenr_T	lnum;
8808 
8809     if (cap->arg)
8810 	lnum = curbuf->b_ml.ml_line_count;
8811     else
8812 	lnum = 1L;
8813     cap->oap->motion_type = MLINE;
8814     setpcmark();
8815 
8816     /* When a count is given, use it instead of the default lnum */
8817     if (cap->count0 != 0)
8818 	lnum = cap->count0;
8819     if (lnum < 1L)
8820 	lnum = 1L;
8821     else if (lnum > curbuf->b_ml.ml_line_count)
8822 	lnum = curbuf->b_ml.ml_line_count;
8823     curwin->w_cursor.lnum = lnum;
8824     beginline(BL_SOL | BL_FIX);
8825 #ifdef FEAT_FOLDING
8826     if ((fdo_flags & FDO_JUMP) && KeyTyped && cap->oap->op_type == OP_NOP)
8827 	foldOpenCursor();
8828 #endif
8829 }
8830 
8831 /*
8832  * CTRL-\ in Normal mode.
8833  */
8834     static void
8835 nv_normal(cmdarg_T *cap)
8836 {
8837     if (cap->nchar == Ctrl_N || cap->nchar == Ctrl_G)
8838     {
8839 	clearop(cap->oap);
8840 	if (restart_edit != 0 && mode_displayed)
8841 	    clear_cmdline = TRUE;		/* unshow mode later */
8842 	restart_edit = 0;
8843 #ifdef FEAT_CMDWIN
8844 	if (cmdwin_type != 0)
8845 	    cmdwin_result = Ctrl_C;
8846 #endif
8847 	if (VIsual_active)
8848 	{
8849 	    end_visual_mode();		/* stop Visual */
8850 	    redraw_curbuf_later(INVERTED);
8851 	}
8852 	/* CTRL-\ CTRL-G restarts Insert mode when 'insertmode' is set. */
8853 	if (cap->nchar == Ctrl_G && p_im)
8854 	    restart_edit = 'a';
8855     }
8856     else
8857 	clearopbeep(cap->oap);
8858 }
8859 
8860 /*
8861  * ESC in Normal mode: beep, but don't flush buffers.
8862  * Don't even beep if we are canceling a command.
8863  */
8864     static void
8865 nv_esc(cmdarg_T *cap)
8866 {
8867     int		no_reason;
8868 
8869     no_reason = (cap->oap->op_type == OP_NOP
8870 		&& cap->opcount == 0
8871 		&& cap->count0 == 0
8872 		&& cap->oap->regname == 0
8873 		&& !p_im);
8874 
8875     if (cap->arg)		/* TRUE for CTRL-C */
8876     {
8877 	if (restart_edit == 0
8878 #ifdef FEAT_CMDWIN
8879 		&& cmdwin_type == 0
8880 #endif
8881 		&& !VIsual_active
8882 		&& no_reason)
8883 	{
8884 	    if (anyBufIsChanged())
8885 		msg(_("Type  :qa!  and press <Enter> to abandon all changes and exit Vim"));
8886 	    else
8887 		msg(_("Type  :qa  and press <Enter> to exit Vim"));
8888 	}
8889 
8890 	/* Don't reset "restart_edit" when 'insertmode' is set, it won't be
8891 	 * set again below when halfway a mapping. */
8892 	if (!p_im)
8893 	    restart_edit = 0;
8894 #ifdef FEAT_CMDWIN
8895 	if (cmdwin_type != 0)
8896 	{
8897 	    cmdwin_result = K_IGNORE;
8898 	    got_int = FALSE;	/* don't stop executing autocommands et al. */
8899 	    return;
8900 	}
8901 #endif
8902     }
8903 
8904     if (VIsual_active)
8905     {
8906 	end_visual_mode();	/* stop Visual */
8907 	check_cursor_col();	/* make sure cursor is not beyond EOL */
8908 	curwin->w_set_curswant = TRUE;
8909 	redraw_curbuf_later(INVERTED);
8910     }
8911     else if (no_reason)
8912 	vim_beep(BO_ESC);
8913     clearop(cap->oap);
8914 
8915     /* A CTRL-C is often used at the start of a menu.  When 'insertmode' is
8916      * set return to Insert mode afterwards. */
8917     if (restart_edit == 0 && goto_im() && ex_normal_busy == 0)
8918 	restart_edit = 'a';
8919 }
8920 
8921 /*
8922  * Handle "A", "a", "I", "i" and <Insert> commands.
8923  * Also handle K_PS, start bracketed paste.
8924  */
8925     static void
8926 nv_edit(cmdarg_T *cap)
8927 {
8928     /* <Insert> is equal to "i" */
8929     if (cap->cmdchar == K_INS || cap->cmdchar == K_KINS)
8930 	cap->cmdchar = 'i';
8931 
8932     /* in Visual mode "A" and "I" are an operator */
8933     if (VIsual_active && (cap->cmdchar == 'A' || cap->cmdchar == 'I'))
8934     {
8935 #ifdef FEAT_TERMINAL
8936 	if (term_in_normal_mode())
8937 	{
8938 	    end_visual_mode();
8939 	    clearop(cap->oap);
8940 	    term_enter_job_mode();
8941 	    return;
8942 	}
8943 #endif
8944 	v_visop(cap);
8945     }
8946 
8947     /* in Visual mode and after an operator "a" and "i" are for text objects */
8948     else if ((cap->cmdchar == 'a' || cap->cmdchar == 'i')
8949 	    && (cap->oap->op_type != OP_NOP || VIsual_active))
8950     {
8951 #ifdef FEAT_TEXTOBJ
8952 	nv_object(cap);
8953 #else
8954 	clearopbeep(cap->oap);
8955 #endif
8956     }
8957 #ifdef FEAT_TERMINAL
8958     else if (term_in_normal_mode())
8959     {
8960 	clearop(cap->oap);
8961 	term_enter_job_mode();
8962 	return;
8963     }
8964 #endif
8965     else if (!curbuf->b_p_ma && !p_im)
8966     {
8967 	/* Only give this error when 'insertmode' is off. */
8968 	emsg(_(e_modifiable));
8969 	clearop(cap->oap);
8970 	if (cap->cmdchar == K_PS)
8971 	    /* drop the pasted text */
8972 	    bracketed_paste(PASTE_INSERT, TRUE, NULL);
8973     }
8974     else if (cap->cmdchar == K_PS && VIsual_active)
8975     {
8976 	pos_T old_pos = curwin->w_cursor;
8977 	pos_T old_visual = VIsual;
8978 
8979 	/* In Visual mode the selected text is deleted. */
8980 	if (VIsual_mode == 'V' || curwin->w_cursor.lnum != VIsual.lnum)
8981 	{
8982 	    shift_delete_registers();
8983 	    cap->oap->regname = '1';
8984 	}
8985 	else
8986 	    cap->oap->regname = '-';
8987 	cap->cmdchar = 'd';
8988 	cap->nchar = NUL;
8989 	nv_operator(cap);
8990 	do_pending_operator(cap, 0, FALSE);
8991 	cap->cmdchar = K_PS;
8992 
8993 	/* When the last char in the line was deleted then append. Detect this
8994 	 * by checking if the cursor moved to before the Visual area. */
8995 	if (*ml_get_cursor() != NUL && LT_POS(curwin->w_cursor, old_pos)
8996 				       && LT_POS(curwin->w_cursor, old_visual))
8997 	    inc_cursor();
8998 
8999 	/* Insert to replace the deleted text with the pasted text. */
9000 	invoke_edit(cap, FALSE, cap->cmdchar, FALSE);
9001     }
9002     else if (!checkclearopq(cap->oap))
9003     {
9004 	switch (cap->cmdchar)
9005 	{
9006 	    case 'A':	/* "A"ppend after the line */
9007 		curwin->w_set_curswant = TRUE;
9008 		if (ve_flags == VE_ALL)
9009 		{
9010 		    int save_State = State;
9011 
9012 		    /* Pretend Insert mode here to allow the cursor on the
9013 		     * character past the end of the line */
9014 		    State = INSERT;
9015 		    coladvance((colnr_T)MAXCOL);
9016 		    State = save_State;
9017 		}
9018 		else
9019 		    curwin->w_cursor.col += (colnr_T)STRLEN(ml_get_cursor());
9020 		break;
9021 
9022 	    case 'I':	/* "I"nsert before the first non-blank */
9023 		if (vim_strchr(p_cpo, CPO_INSEND) == NULL)
9024 		    beginline(BL_WHITE);
9025 		else
9026 		    beginline(BL_WHITE|BL_FIX);
9027 		break;
9028 
9029 	    case K_PS:
9030 		/* Bracketed paste works like "a"ppend, unless the cursor is in
9031 		 * the first column, then it inserts. */
9032 		if (curwin->w_cursor.col == 0)
9033 		    break;
9034 		/* FALLTHROUGH */
9035 
9036 	    case 'a':	/* "a"ppend is like "i"nsert on the next character. */
9037 		/* increment coladd when in virtual space, increment the
9038 		 * column otherwise, also to append after an unprintable char */
9039 		if (virtual_active()
9040 			&& (curwin->w_cursor.coladd > 0
9041 			    || *ml_get_cursor() == NUL
9042 			    || *ml_get_cursor() == TAB))
9043 		    curwin->w_cursor.coladd++;
9044 		else if (*ml_get_cursor() != NUL)
9045 		    inc_cursor();
9046 		break;
9047 	}
9048 
9049 	if (curwin->w_cursor.coladd && cap->cmdchar != 'A')
9050 	{
9051 	    int save_State = State;
9052 
9053 	    /* Pretend Insert mode here to allow the cursor on the
9054 	     * character past the end of the line */
9055 	    State = INSERT;
9056 	    coladvance(getviscol());
9057 	    State = save_State;
9058 	}
9059 
9060 	invoke_edit(cap, FALSE, cap->cmdchar, FALSE);
9061     }
9062     else if (cap->cmdchar == K_PS)
9063 	/* drop the pasted text */
9064 	bracketed_paste(PASTE_INSERT, TRUE, NULL);
9065 }
9066 
9067 /*
9068  * Invoke edit() and take care of "restart_edit" and the return value.
9069  */
9070     static void
9071 invoke_edit(
9072     cmdarg_T	*cap,
9073     int		repl,		/* "r" or "gr" command */
9074     int		cmd,
9075     int		startln)
9076 {
9077     int		restart_edit_save = 0;
9078 
9079     /* Complicated: When the user types "a<C-O>a" we don't want to do Insert
9080      * mode recursively.  But when doing "a<C-O>." or "a<C-O>rx" we do allow
9081      * it. */
9082     if (repl || !stuff_empty())
9083 	restart_edit_save = restart_edit;
9084     else
9085 	restart_edit_save = 0;
9086 
9087     /* Always reset "restart_edit", this is not a restarted edit. */
9088     restart_edit = 0;
9089 
9090     if (edit(cmd, startln, cap->count1))
9091 	cap->retval |= CA_COMMAND_BUSY;
9092 
9093     if (restart_edit == 0)
9094 	restart_edit = restart_edit_save;
9095 }
9096 
9097 #ifdef FEAT_TEXTOBJ
9098 /*
9099  * "a" or "i" while an operator is pending or in Visual mode: object motion.
9100  */
9101     static void
9102 nv_object(
9103     cmdarg_T	*cap)
9104 {
9105     int		flag;
9106     int		include;
9107     char_u	*mps_save;
9108 
9109     if (cap->cmdchar == 'i')
9110 	include = FALSE;    /* "ix" = inner object: exclude white space */
9111     else
9112 	include = TRUE;	    /* "ax" = an object: include white space */
9113 
9114     /* Make sure (), [], {} and <> are in 'matchpairs' */
9115     mps_save = curbuf->b_p_mps;
9116     curbuf->b_p_mps = (char_u *)"(:),{:},[:],<:>";
9117 
9118     switch (cap->nchar)
9119     {
9120 	case 'w': /* "aw" = a word */
9121 		flag = current_word(cap->oap, cap->count1, include, FALSE);
9122 		break;
9123 	case 'W': /* "aW" = a WORD */
9124 		flag = current_word(cap->oap, cap->count1, include, TRUE);
9125 		break;
9126 	case 'b': /* "ab" = a braces block */
9127 	case '(':
9128 	case ')':
9129 		flag = current_block(cap->oap, cap->count1, include, '(', ')');
9130 		break;
9131 	case 'B': /* "aB" = a Brackets block */
9132 	case '{':
9133 	case '}':
9134 		flag = current_block(cap->oap, cap->count1, include, '{', '}');
9135 		break;
9136 	case '[': /* "a[" = a [] block */
9137 	case ']':
9138 		flag = current_block(cap->oap, cap->count1, include, '[', ']');
9139 		break;
9140 	case '<': /* "a<" = a <> block */
9141 	case '>':
9142 		flag = current_block(cap->oap, cap->count1, include, '<', '>');
9143 		break;
9144 	case 't': /* "at" = a tag block (xml and html) */
9145 		/* Do not adjust oap->end in do_pending_operator()
9146 		 * otherwise there are different results for 'dit'
9147 		 * (note leading whitespace in last line):
9148 		 * 1) <b>      2) <b>
9149 		 *    foobar      foobar
9150 		 *    </b>            </b>
9151 		 */
9152 		cap->retval |= CA_NO_ADJ_OP_END;
9153 		flag = current_tagblock(cap->oap, cap->count1, include);
9154 		break;
9155 	case 'p': /* "ap" = a paragraph */
9156 		flag = current_par(cap->oap, cap->count1, include, 'p');
9157 		break;
9158 	case 's': /* "as" = a sentence */
9159 		flag = current_sent(cap->oap, cap->count1, include);
9160 		break;
9161 	case '"': /* "a"" = a double quoted string */
9162 	case '\'': /* "a'" = a single quoted string */
9163 	case '`': /* "a`" = a backtick quoted string */
9164 		flag = current_quote(cap->oap, cap->count1, include,
9165 								  cap->nchar);
9166 		break;
9167 #if 0	/* TODO */
9168 	case 'S': /* "aS" = a section */
9169 	case 'f': /* "af" = a filename */
9170 	case 'u': /* "au" = a URL */
9171 #endif
9172 	default:
9173 		flag = FAIL;
9174 		break;
9175     }
9176 
9177     curbuf->b_p_mps = mps_save;
9178     if (flag == FAIL)
9179 	clearopbeep(cap->oap);
9180     adjust_cursor_col();
9181     curwin->w_set_curswant = TRUE;
9182 }
9183 #endif
9184 
9185 /*
9186  * "q" command: Start/stop recording.
9187  * "q:", "q/", "q?": edit command-line in command-line window.
9188  */
9189     static void
9190 nv_record(cmdarg_T *cap)
9191 {
9192     if (cap->oap->op_type == OP_FORMAT)
9193     {
9194 	/* "gqq" is the same as "gqgq": format line */
9195 	cap->cmdchar = 'g';
9196 	cap->nchar = 'q';
9197 	nv_operator(cap);
9198     }
9199     else if (!checkclearop(cap->oap))
9200     {
9201 #ifdef FEAT_CMDWIN
9202 	if (cap->nchar == ':' || cap->nchar == '/' || cap->nchar == '?')
9203 	{
9204 	    stuffcharReadbuff(cap->nchar);
9205 	    stuffcharReadbuff(K_CMDWIN);
9206 	}
9207 	else
9208 #endif
9209 	    /* (stop) recording into a named register, unless executing a
9210 	     * register */
9211 	    if (reg_executing == 0 && do_record(cap->nchar) == FAIL)
9212 		clearopbeep(cap->oap);
9213     }
9214 }
9215 
9216 /*
9217  * Handle the "@r" command.
9218  */
9219     static void
9220 nv_at(cmdarg_T *cap)
9221 {
9222     if (checkclearop(cap->oap))
9223 	return;
9224 #ifdef FEAT_EVAL
9225     if (cap->nchar == '=')
9226     {
9227 	if (get_expr_register() == NUL)
9228 	    return;
9229     }
9230 #endif
9231     while (cap->count1-- && !got_int)
9232     {
9233 	if (do_execreg(cap->nchar, FALSE, FALSE, FALSE) == FAIL)
9234 	{
9235 	    clearopbeep(cap->oap);
9236 	    break;
9237 	}
9238 	line_breakcheck();
9239     }
9240 }
9241 
9242 /*
9243  * Handle the CTRL-U and CTRL-D commands.
9244  */
9245     static void
9246 nv_halfpage(cmdarg_T *cap)
9247 {
9248     if ((cap->cmdchar == Ctrl_U && curwin->w_cursor.lnum == 1)
9249 	    || (cap->cmdchar == Ctrl_D
9250 		&& curwin->w_cursor.lnum == curbuf->b_ml.ml_line_count))
9251 	clearopbeep(cap->oap);
9252     else if (!checkclearop(cap->oap))
9253 	halfpage(cap->cmdchar == Ctrl_D, cap->count0);
9254 }
9255 
9256 /*
9257  * Handle "J" or "gJ" command.
9258  */
9259     static void
9260 nv_join(cmdarg_T *cap)
9261 {
9262     if (VIsual_active)	/* join the visual lines */
9263 	nv_operator(cap);
9264     else if (!checkclearop(cap->oap))
9265     {
9266 	if (cap->count0 <= 1)
9267 	    cap->count0 = 2;	    /* default for join is two lines! */
9268 	if (curwin->w_cursor.lnum + cap->count0 - 1 >
9269 						   curbuf->b_ml.ml_line_count)
9270 	{
9271 	    /* can't join when on the last line */
9272 	    if (cap->count0 <= 2)
9273 	    {
9274 		clearopbeep(cap->oap);
9275 		return;
9276 	    }
9277 	    cap->count0 = curbuf->b_ml.ml_line_count
9278 						  - curwin->w_cursor.lnum + 1;
9279 	}
9280 
9281 	prep_redo(cap->oap->regname, cap->count0,
9282 				     NUL, cap->cmdchar, NUL, NUL, cap->nchar);
9283 	(void)do_join(cap->count0, cap->nchar == NUL, TRUE, TRUE, TRUE);
9284     }
9285 }
9286 
9287 /*
9288  * "P", "gP", "p" and "gp" commands.
9289  */
9290     static void
9291 nv_put(cmdarg_T *cap)
9292 {
9293     int		regname = 0;
9294     void	*reg1 = NULL, *reg2 = NULL;
9295     int		empty = FALSE;
9296     int		was_visual = FALSE;
9297     int		dir;
9298     int		flags = 0;
9299 
9300     if (cap->oap->op_type != OP_NOP)
9301     {
9302 #ifdef FEAT_DIFF
9303 	/* "dp" is ":diffput" */
9304 	if (cap->oap->op_type == OP_DELETE && cap->cmdchar == 'p')
9305 	{
9306 	    clearop(cap->oap);
9307 	    nv_diffgetput(TRUE, cap->opcount);
9308 	}
9309 	else
9310 #endif
9311 	clearopbeep(cap->oap);
9312     }
9313 #ifdef FEAT_JOB_CHANNEL
9314     else if (bt_prompt(curbuf) && !prompt_curpos_editable())
9315     {
9316 	clearopbeep(cap->oap);
9317     }
9318 #endif
9319     else
9320     {
9321 	dir = (cap->cmdchar == 'P'
9322 		|| (cap->cmdchar == 'g' && cap->nchar == 'P'))
9323 							 ? BACKWARD : FORWARD;
9324 	prep_redo_cmd(cap);
9325 	if (cap->cmdchar == 'g')
9326 	    flags |= PUT_CURSEND;
9327 
9328 	if (VIsual_active)
9329 	{
9330 	    /* Putting in Visual mode: The put text replaces the selected
9331 	     * text.  First delete the selected text, then put the new text.
9332 	     * Need to save and restore the registers that the delete
9333 	     * overwrites if the old contents is being put.
9334 	     */
9335 	    was_visual = TRUE;
9336 	    regname = cap->oap->regname;
9337 #ifdef FEAT_CLIPBOARD
9338 	    adjust_clip_reg(&regname);
9339 #endif
9340 	   if (regname == 0 || regname == '"'
9341 				     || VIM_ISDIGIT(regname) || regname == '-'
9342 #ifdef FEAT_CLIPBOARD
9343 		    || (clip_unnamed && (regname == '*' || regname == '+'))
9344 #endif
9345 
9346 		    )
9347 	    {
9348 		/* The delete is going to overwrite the register we want to
9349 		 * put, save it first. */
9350 		reg1 = get_register(regname, TRUE);
9351 	    }
9352 
9353 	    /* Now delete the selected text. */
9354 	    cap->cmdchar = 'd';
9355 	    cap->nchar = NUL;
9356 	    cap->oap->regname = NUL;
9357 	    nv_operator(cap);
9358 	    do_pending_operator(cap, 0, FALSE);
9359 	    empty = (curbuf->b_ml.ml_flags & ML_EMPTY);
9360 
9361 	    /* delete PUT_LINE_BACKWARD; */
9362 	    cap->oap->regname = regname;
9363 
9364 	    if (reg1 != NULL)
9365 	    {
9366 		/* Delete probably changed the register we want to put, save
9367 		 * it first. Then put back what was there before the delete. */
9368 		reg2 = get_register(regname, FALSE);
9369 		put_register(regname, reg1);
9370 	    }
9371 
9372 	    /* When deleted a linewise Visual area, put the register as
9373 	     * lines to avoid it joined with the next line.  When deletion was
9374 	     * characterwise, split a line when putting lines. */
9375 	    if (VIsual_mode == 'V')
9376 		flags |= PUT_LINE;
9377 	    else if (VIsual_mode == 'v')
9378 		flags |= PUT_LINE_SPLIT;
9379 	    if (VIsual_mode == Ctrl_V && dir == FORWARD)
9380 		flags |= PUT_LINE_FORWARD;
9381 	    dir = BACKWARD;
9382 	    if ((VIsual_mode != 'V'
9383 			&& curwin->w_cursor.col < curbuf->b_op_start.col)
9384 		    || (VIsual_mode == 'V'
9385 			&& curwin->w_cursor.lnum < curbuf->b_op_start.lnum))
9386 		/* cursor is at the end of the line or end of file, put
9387 		 * forward. */
9388 		dir = FORWARD;
9389 	    /* May have been reset in do_put(). */
9390 	    VIsual_active = TRUE;
9391 	}
9392 	do_put(cap->oap->regname, dir, cap->count1, flags);
9393 
9394 	/* If a register was saved, put it back now. */
9395 	if (reg2 != NULL)
9396 	    put_register(regname, reg2);
9397 
9398 	/* What to reselect with "gv"?  Selecting the just put text seems to
9399 	 * be the most useful, since the original text was removed. */
9400 	if (was_visual)
9401 	{
9402 	    curbuf->b_visual.vi_start = curbuf->b_op_start;
9403 	    curbuf->b_visual.vi_end = curbuf->b_op_end;
9404 	    /* need to adjust cursor position */
9405 	    if (*p_sel == 'e')
9406 		inc(&curbuf->b_visual.vi_end);
9407 	}
9408 
9409 	/* When all lines were selected and deleted do_put() leaves an empty
9410 	 * line that needs to be deleted now. */
9411 	if (empty && *ml_get(curbuf->b_ml.ml_line_count) == NUL)
9412 	{
9413 	    ml_delete(curbuf->b_ml.ml_line_count, TRUE);
9414 
9415 	    /* If the cursor was in that line, move it to the end of the last
9416 	     * line. */
9417 	    if (curwin->w_cursor.lnum > curbuf->b_ml.ml_line_count)
9418 	    {
9419 		curwin->w_cursor.lnum = curbuf->b_ml.ml_line_count;
9420 		coladvance((colnr_T)MAXCOL);
9421 	    }
9422 	}
9423 	auto_format(FALSE, TRUE);
9424     }
9425 }
9426 
9427 /*
9428  * "o" and "O" commands.
9429  */
9430     static void
9431 nv_open(cmdarg_T *cap)
9432 {
9433 #ifdef FEAT_DIFF
9434     /* "do" is ":diffget" */
9435     if (cap->oap->op_type == OP_DELETE && cap->cmdchar == 'o')
9436     {
9437 	clearop(cap->oap);
9438 	nv_diffgetput(FALSE, cap->opcount);
9439     }
9440     else
9441 #endif
9442     if (VIsual_active)  /* switch start and end of visual */
9443 	v_swap_corners(cap->cmdchar);
9444 #ifdef FEAT_JOB_CHANNEL
9445     else if (bt_prompt(curbuf))
9446 	clearopbeep(cap->oap);
9447 #endif
9448     else
9449 	n_opencmd(cap);
9450 }
9451 
9452 #ifdef FEAT_NETBEANS_INTG
9453     static void
9454 nv_nbcmd(cmdarg_T *cap)
9455 {
9456     netbeans_keycommand(cap->nchar);
9457 }
9458 #endif
9459 
9460 #ifdef FEAT_DND
9461     static void
9462 nv_drop(cmdarg_T *cap UNUSED)
9463 {
9464     do_put('~', BACKWARD, 1L, PUT_CURSEND);
9465 }
9466 #endif
9467 
9468 /*
9469  * Trigger CursorHold event.
9470  * When waiting for a character for 'updatetime' K_CURSORHOLD is put in the
9471  * input buffer.  "did_cursorhold" is set to avoid retriggering.
9472  */
9473     static void
9474 nv_cursorhold(cmdarg_T *cap)
9475 {
9476     apply_autocmds(EVENT_CURSORHOLD, NULL, NULL, FALSE, curbuf);
9477     did_cursorhold = TRUE;
9478     cap->retval |= CA_COMMAND_BUSY;	/* don't call edit() now */
9479 }
9480 
9481 /*
9482  * Calculate start/end virtual columns for operating in block mode.
9483  */
9484     static void
9485 get_op_vcol(
9486     oparg_T	*oap,
9487     colnr_T	redo_VIsual_vcol,
9488     int		initial)    /* when TRUE adjust position for 'selectmode' */
9489 {
9490     colnr_T	    start, end;
9491 
9492     if (VIsual_mode != Ctrl_V
9493 	    || (!initial && oap->end.col < curwin->w_width))
9494 	return;
9495 
9496     oap->block_mode = TRUE;
9497 
9498     /* prevent from moving onto a trail byte */
9499     if (has_mbyte)
9500 	mb_adjustpos(curwin->w_buffer, &oap->end);
9501 
9502     getvvcol(curwin, &(oap->start), &oap->start_vcol, NULL, &oap->end_vcol);
9503 
9504     if (!redo_VIsual_busy)
9505     {
9506 	getvvcol(curwin, &(oap->end), &start, NULL, &end);
9507 
9508 	if (start < oap->start_vcol)
9509 	    oap->start_vcol = start;
9510 	if (end > oap->end_vcol)
9511 	{
9512 	    if (initial && *p_sel == 'e' && start >= 1
9513 				    && start - 1 >= oap->end_vcol)
9514 		oap->end_vcol = start - 1;
9515 	    else
9516 		oap->end_vcol = end;
9517 	}
9518     }
9519 
9520     /* if '$' was used, get oap->end_vcol from longest line */
9521     if (curwin->w_curswant == MAXCOL)
9522     {
9523 	curwin->w_cursor.col = MAXCOL;
9524 	oap->end_vcol = 0;
9525 	for (curwin->w_cursor.lnum = oap->start.lnum;
9526 		curwin->w_cursor.lnum <= oap->end.lnum;
9527 					++curwin->w_cursor.lnum)
9528 	{
9529 	    getvvcol(curwin, &curwin->w_cursor, NULL, NULL, &end);
9530 	    if (end > oap->end_vcol)
9531 		oap->end_vcol = end;
9532 	}
9533     }
9534     else if (redo_VIsual_busy)
9535 	oap->end_vcol = oap->start_vcol + redo_VIsual_vcol - 1;
9536     /*
9537     * Correct oap->end.col and oap->start.col to be the
9538     * upper-left and lower-right corner of the block area.
9539     *
9540     * (Actually, this does convert column positions into character
9541     * positions)
9542     */
9543     curwin->w_cursor.lnum = oap->end.lnum;
9544     coladvance(oap->end_vcol);
9545     oap->end = curwin->w_cursor;
9546 
9547     curwin->w_cursor = oap->start;
9548     coladvance(oap->start_vcol);
9549     oap->start = curwin->w_cursor;
9550 }
9551