xref: /vim-8.2.3635/src/normal.c (revision 4e63f942)
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_put_opt(cmdarg_T *cap, int fix_indent);
147 static void	nv_open(cmdarg_T *cap);
148 #ifdef FEAT_NETBEANS_INTG
149 static void	nv_nbcmd(cmdarg_T *cap);
150 #endif
151 #ifdef FEAT_DND
152 static void	nv_drop(cmdarg_T *cap);
153 #endif
154 static void	nv_cursorhold(cmdarg_T *cap);
155 static void	get_op_vcol(oparg_T *oap, colnr_T col, int initial);
156 
157 static char *e_noident = N_("E349: No identifier under cursor");
158 
159 /*
160  * Function to be called for a Normal or Visual mode command.
161  * The argument is a cmdarg_T.
162  */
163 typedef void (*nv_func_T)(cmdarg_T *cap);
164 
165 /* Values for cmd_flags. */
166 #define NV_NCH	    0x01	  /* may need to get a second char */
167 #define NV_NCH_NOP  (0x02|NV_NCH) /* get second char when no operator pending */
168 #define NV_NCH_ALW  (0x04|NV_NCH) /* always get a second char */
169 #define NV_LANG	    0x08	/* second char needs language adjustment */
170 
171 #define NV_SS	    0x10	/* may start selection */
172 #define NV_SSS	    0x20	/* may start selection with shift modifier */
173 #define NV_STS	    0x40	/* may stop selection without shift modif. */
174 #define NV_RL	    0x80	/* 'rightleft' modifies command */
175 #define NV_KEEPREG  0x100	/* don't clear regname */
176 #define NV_NCW	    0x200	/* not allowed in command-line window */
177 
178 /*
179  * Generally speaking, every Normal mode command should either clear any
180  * pending operator (with *clearop*()), or set the motion type variable
181  * oap->motion_type.
182  *
183  * When a cursor motion command is made, it is marked as being a character or
184  * line oriented motion.  Then, if an operator is in effect, the operation
185  * becomes character or line oriented accordingly.
186  */
187 
188 /*
189  * This table contains one entry for every Normal or Visual mode command.
190  * The order doesn't matter, init_normal_cmds() will create a sorted index.
191  * It is faster when all keys from zero to '~' are present.
192  */
193 static const struct nv_cmd
194 {
195     int		cmd_char;	/* (first) command character */
196     nv_func_T   cmd_func;	/* function for this command */
197     short_u	cmd_flags;	/* NV_ flags */
198     short	cmd_arg;	/* value for ca.arg */
199 } nv_cmds[] =
200 {
201     {NUL,	nv_error,	0,			0},
202     {Ctrl_A,	nv_addsub,	0,			0},
203     {Ctrl_B,	nv_page,	NV_STS,			BACKWARD},
204     {Ctrl_C,	nv_esc,		0,			TRUE},
205     {Ctrl_D,	nv_halfpage,	0,			0},
206     {Ctrl_E,	nv_scroll_line,	0,			TRUE},
207     {Ctrl_F,	nv_page,	NV_STS,			FORWARD},
208     {Ctrl_G,	nv_ctrlg,	0,			0},
209     {Ctrl_H,	nv_ctrlh,	0,			0},
210     {Ctrl_I,	nv_pcmark,	0,			0},
211     {NL,	nv_down,	0,			FALSE},
212     {Ctrl_K,	nv_error,	0,			0},
213     {Ctrl_L,	nv_clear,	0,			0},
214     {CAR,	nv_down,	0,			TRUE},
215     {Ctrl_N,	nv_down,	NV_STS,			FALSE},
216     {Ctrl_O,	nv_ctrlo,	0,			0},
217     {Ctrl_P,	nv_up,		NV_STS,			FALSE},
218     {Ctrl_Q,	nv_visual,	0,			FALSE},
219     {Ctrl_R,	nv_redo,	0,			0},
220     {Ctrl_S,	nv_ignore,	0,			0},
221     {Ctrl_T,	nv_tagpop,	NV_NCW,			0},
222     {Ctrl_U,	nv_halfpage,	0,			0},
223     {Ctrl_V,	nv_visual,	0,			FALSE},
224     {'V',	nv_visual,	0,			FALSE},
225     {'v',	nv_visual,	0,			FALSE},
226     {Ctrl_W,	nv_window,	0,			0},
227     {Ctrl_X,	nv_addsub,	0,			0},
228     {Ctrl_Y,	nv_scroll_line,	0,			FALSE},
229     {Ctrl_Z,	nv_suspend,	0,			0},
230     {ESC,	nv_esc,		0,			FALSE},
231     {Ctrl_BSL,	nv_normal,	NV_NCH_ALW,		0},
232     {Ctrl_RSB,	nv_ident,	NV_NCW,			0},
233     {Ctrl_HAT,	nv_hat,		NV_NCW,			0},
234     {Ctrl__,	nv_error,	0,			0},
235     {' ',	nv_right,	0,			0},
236     {'!',	nv_operator,	0,			0},
237     {'"',	nv_regname,	NV_NCH_NOP|NV_KEEPREG,	0},
238     {'#',	nv_ident,	0,			0},
239     {'$',	nv_dollar,	0,			0},
240     {'%',	nv_percent,	0,			0},
241     {'&',	nv_optrans,	0,			0},
242     {'\'',	nv_gomark,	NV_NCH_ALW,		TRUE},
243     {'(',	nv_brace,	0,			BACKWARD},
244     {')',	nv_brace,	0,			FORWARD},
245     {'*',	nv_ident,	0,			0},
246     {'+',	nv_down,	0,			TRUE},
247     {',',	nv_csearch,	0,			TRUE},
248     {'-',	nv_up,		0,			TRUE},
249     {'.',	nv_dot,		NV_KEEPREG,		0},
250     {'/',	nv_search,	0,			FALSE},
251     {'0',	nv_beginline,	0,			0},
252     {'1',	nv_ignore,	0,			0},
253     {'2',	nv_ignore,	0,			0},
254     {'3',	nv_ignore,	0,			0},
255     {'4',	nv_ignore,	0,			0},
256     {'5',	nv_ignore,	0,			0},
257     {'6',	nv_ignore,	0,			0},
258     {'7',	nv_ignore,	0,			0},
259     {'8',	nv_ignore,	0,			0},
260     {'9',	nv_ignore,	0,			0},
261     {':',	nv_colon,	0,			0},
262     {';',	nv_csearch,	0,			FALSE},
263     {'<',	nv_operator,	NV_RL,			0},
264     {'=',	nv_operator,	0,			0},
265     {'>',	nv_operator,	NV_RL,			0},
266     {'?',	nv_search,	0,			FALSE},
267     {'@',	nv_at,		NV_NCH_NOP,		FALSE},
268     {'A',	nv_edit,	0,			0},
269     {'B',	nv_bck_word,	0,			1},
270     {'C',	nv_abbrev,	NV_KEEPREG,		0},
271     {'D',	nv_abbrev,	NV_KEEPREG,		0},
272     {'E',	nv_wordcmd,	0,			TRUE},
273     {'F',	nv_csearch,	NV_NCH_ALW|NV_LANG,	BACKWARD},
274     {'G',	nv_goto,	0,			TRUE},
275     {'H',	nv_scroll,	0,			0},
276     {'I',	nv_edit,	0,			0},
277     {'J',	nv_join,	0,			0},
278     {'K',	nv_ident,	0,			0},
279     {'L',	nv_scroll,	0,			0},
280     {'M',	nv_scroll,	0,			0},
281     {'N',	nv_next,	0,			SEARCH_REV},
282     {'O',	nv_open,	0,			0},
283     {'P',	nv_put,		0,			0},
284     {'Q',	nv_exmode,	NV_NCW,			0},
285     {'R',	nv_Replace,	0,			FALSE},
286     {'S',	nv_subst,	NV_KEEPREG,		0},
287     {'T',	nv_csearch,	NV_NCH_ALW|NV_LANG,	BACKWARD},
288     {'U',	nv_Undo,	0,			0},
289     {'W',	nv_wordcmd,	0,			TRUE},
290     {'X',	nv_abbrev,	NV_KEEPREG,		0},
291     {'Y',	nv_abbrev,	NV_KEEPREG,		0},
292     {'Z',	nv_Zet,		NV_NCH_NOP|NV_NCW,	0},
293     {'[',	nv_brackets,	NV_NCH_ALW,		BACKWARD},
294     {'\\',	nv_error,	0,			0},
295     {']',	nv_brackets,	NV_NCH_ALW,		FORWARD},
296     {'^',	nv_beginline,	0,			BL_WHITE | BL_FIX},
297     {'_',	nv_lineop,	0,			0},
298     {'`',	nv_gomark,	NV_NCH_ALW,		FALSE},
299     {'a',	nv_edit,	NV_NCH,			0},
300     {'b',	nv_bck_word,	0,			0},
301     {'c',	nv_operator,	0,			0},
302     {'d',	nv_operator,	0,			0},
303     {'e',	nv_wordcmd,	0,			FALSE},
304     {'f',	nv_csearch,	NV_NCH_ALW|NV_LANG,	FORWARD},
305     {'g',	nv_g_cmd,	NV_NCH_ALW,		FALSE},
306     {'h',	nv_left,	NV_RL,			0},
307     {'i',	nv_edit,	NV_NCH,			0},
308     {'j',	nv_down,	0,			FALSE},
309     {'k',	nv_up,		0,			FALSE},
310     {'l',	nv_right,	NV_RL,			0},
311     {'m',	nv_mark,	NV_NCH_NOP,		0},
312     {'n',	nv_next,	0,			0},
313     {'o',	nv_open,	0,			0},
314     {'p',	nv_put,		0,			0},
315     {'q',	nv_record,	NV_NCH,			0},
316     {'r',	nv_replace,	NV_NCH_NOP|NV_LANG,	0},
317     {'s',	nv_subst,	NV_KEEPREG,		0},
318     {'t',	nv_csearch,	NV_NCH_ALW|NV_LANG,	FORWARD},
319     {'u',	nv_undo,	0,			0},
320     {'w',	nv_wordcmd,	0,			FALSE},
321     {'x',	nv_abbrev,	NV_KEEPREG,		0},
322     {'y',	nv_operator,	0,			0},
323     {'z',	nv_zet,		NV_NCH_ALW,		0},
324     {'{',	nv_findpar,	0,			BACKWARD},
325     {'|',	nv_pipe,	0,			0},
326     {'}',	nv_findpar,	0,			FORWARD},
327     {'~',	nv_tilde,	0,			0},
328 
329     /* pound sign */
330     {POUND,	nv_ident,	0,			0},
331 #ifdef FEAT_MOUSE
332     {K_MOUSEUP, nv_mousescroll,	0,			MSCR_UP},
333     {K_MOUSEDOWN, nv_mousescroll, 0,			MSCR_DOWN},
334     {K_MOUSELEFT, nv_mousescroll, 0,			MSCR_LEFT},
335     {K_MOUSERIGHT, nv_mousescroll, 0,			MSCR_RIGHT},
336     {K_LEFTMOUSE, nv_mouse,	0,			0},
337     {K_LEFTMOUSE_NM, nv_mouse,	0,			0},
338     {K_LEFTDRAG, nv_mouse,	0,			0},
339     {K_LEFTRELEASE, nv_mouse,	0,			0},
340     {K_LEFTRELEASE_NM, nv_mouse, 0,			0},
341     {K_MOUSEMOVE, nv_mouse,	0,			0},
342     {K_MIDDLEMOUSE, nv_mouse,	0,			0},
343     {K_MIDDLEDRAG, nv_mouse,	0,			0},
344     {K_MIDDLERELEASE, nv_mouse,	0,			0},
345     {K_RIGHTMOUSE, nv_mouse,	0,			0},
346     {K_RIGHTDRAG, nv_mouse,	0,			0},
347     {K_RIGHTRELEASE, nv_mouse,	0,			0},
348     {K_X1MOUSE, nv_mouse,	0,			0},
349     {K_X1DRAG, nv_mouse,	0,			0},
350     {K_X1RELEASE, nv_mouse,	0,			0},
351     {K_X2MOUSE, nv_mouse,	0,			0},
352     {K_X2DRAG, nv_mouse,	0,			0},
353     {K_X2RELEASE, nv_mouse,	0,			0},
354 #endif
355     {K_IGNORE,	nv_ignore,	NV_KEEPREG,		0},
356     {K_NOP,	nv_nop,		0,			0},
357     {K_INS,	nv_edit,	0,			0},
358     {K_KINS,	nv_edit,	0,			0},
359     {K_BS,	nv_ctrlh,	0,			0},
360     {K_UP,	nv_up,		NV_SSS|NV_STS,		FALSE},
361     {K_S_UP,	nv_page,	NV_SS,			BACKWARD},
362     {K_DOWN,	nv_down,	NV_SSS|NV_STS,		FALSE},
363     {K_S_DOWN,	nv_page,	NV_SS,			FORWARD},
364     {K_LEFT,	nv_left,	NV_SSS|NV_STS|NV_RL,	0},
365     {K_S_LEFT,	nv_bck_word,	NV_SS|NV_RL,		0},
366     {K_C_LEFT,	nv_bck_word,	NV_SSS|NV_RL|NV_STS,	1},
367     {K_RIGHT,	nv_right,	NV_SSS|NV_STS|NV_RL,	0},
368     {K_S_RIGHT,	nv_wordcmd,	NV_SS|NV_RL,		FALSE},
369     {K_C_RIGHT,	nv_wordcmd,	NV_SSS|NV_RL|NV_STS,	TRUE},
370     {K_PAGEUP,	nv_page,	NV_SSS|NV_STS,		BACKWARD},
371     {K_KPAGEUP,	nv_page,	NV_SSS|NV_STS,		BACKWARD},
372     {K_PAGEDOWN, nv_page,	NV_SSS|NV_STS,		FORWARD},
373     {K_KPAGEDOWN, nv_page,	NV_SSS|NV_STS,		FORWARD},
374     {K_END,	nv_end,		NV_SSS|NV_STS,		FALSE},
375     {K_KEND,	nv_end,		NV_SSS|NV_STS,		FALSE},
376     {K_S_END,	nv_end,		NV_SS,			FALSE},
377     {K_C_END,	nv_end,		NV_SSS|NV_STS,		TRUE},
378     {K_HOME,	nv_home,	NV_SSS|NV_STS,		0},
379     {K_KHOME,	nv_home,	NV_SSS|NV_STS,		0},
380     {K_S_HOME,	nv_home,	NV_SS,			0},
381     {K_C_HOME,	nv_goto,	NV_SSS|NV_STS,		FALSE},
382     {K_DEL,	nv_abbrev,	0,			0},
383     {K_KDEL,	nv_abbrev,	0,			0},
384     {K_UNDO,	nv_kundo,	0,			0},
385     {K_HELP,	nv_help,	NV_NCW,			0},
386     {K_F1,	nv_help,	NV_NCW,			0},
387     {K_XF1,	nv_help,	NV_NCW,			0},
388     {K_SELECT,	nv_select,	0,			0},
389 #ifdef FEAT_GUI
390     {K_VER_SCROLLBAR, nv_ver_scrollbar, 0,		0},
391     {K_HOR_SCROLLBAR, nv_hor_scrollbar, 0,		0},
392 #endif
393 #ifdef FEAT_GUI_TABLINE
394     {K_TABLINE, nv_tabline,	0,			0},
395     {K_TABMENU, nv_tabmenu,	0,			0},
396 #endif
397 #ifdef FEAT_NETBEANS_INTG
398     {K_F21,	nv_nbcmd,	NV_NCH_ALW,		0},
399 #endif
400 #ifdef FEAT_DND
401     {K_DROP,	nv_drop,	NV_STS,			0},
402 #endif
403     {K_CURSORHOLD, nv_cursorhold, NV_KEEPREG,		0},
404     {K_PS,	nv_edit,	0,			0},
405 };
406 
407 /* Number of commands in nv_cmds[]. */
408 #define NV_CMDS_SIZE (sizeof(nv_cmds) / sizeof(struct nv_cmd))
409 
410 /* Sorted index of commands in nv_cmds[]. */
411 static short nv_cmd_idx[NV_CMDS_SIZE];
412 
413 /* The highest index for which
414  * nv_cmds[idx].cmd_char == nv_cmd_idx[nv_cmds[idx].cmd_char] */
415 static int nv_max_linear;
416 
417 /*
418  * Compare functions for qsort() below, that checks the command character
419  * through the index in nv_cmd_idx[].
420  */
421     static int
422 nv_compare(const void *s1, const void *s2)
423 {
424     int		c1, c2;
425 
426     /* The commands are sorted on absolute value. */
427     c1 = nv_cmds[*(const short *)s1].cmd_char;
428     c2 = nv_cmds[*(const short *)s2].cmd_char;
429     if (c1 < 0)
430 	c1 = -c1;
431     if (c2 < 0)
432 	c2 = -c2;
433     return c1 - c2;
434 }
435 
436 /*
437  * Initialize the nv_cmd_idx[] table.
438  */
439     void
440 init_normal_cmds(void)
441 {
442     int		i;
443 
444     /* Fill the index table with a one to one relation. */
445     for (i = 0; i < (int)NV_CMDS_SIZE; ++i)
446 	nv_cmd_idx[i] = i;
447 
448     /* Sort the commands by the command character.  */
449     qsort((void *)&nv_cmd_idx, (size_t)NV_CMDS_SIZE, sizeof(short), nv_compare);
450 
451     /* Find the first entry that can't be indexed by the command character. */
452     for (i = 0; i < (int)NV_CMDS_SIZE; ++i)
453 	if (i != nv_cmds[nv_cmd_idx[i]].cmd_char)
454 	    break;
455     nv_max_linear = i - 1;
456 }
457 
458 /*
459  * Search for a command in the commands table.
460  * Returns -1 for invalid command.
461  */
462     static int
463 find_command(int cmdchar)
464 {
465     int		i;
466     int		idx;
467     int		top, bot;
468     int		c;
469 
470     /* A multi-byte character is never a command. */
471     if (cmdchar >= 0x100)
472 	return -1;
473 
474     /* We use the absolute value of the character.  Special keys have a
475      * negative value, but are sorted on their absolute value. */
476     if (cmdchar < 0)
477 	cmdchar = -cmdchar;
478 
479     /* If the character is in the first part: The character is the index into
480      * nv_cmd_idx[]. */
481     if (cmdchar <= nv_max_linear)
482 	return nv_cmd_idx[cmdchar];
483 
484     /* Perform a binary search. */
485     bot = nv_max_linear + 1;
486     top = NV_CMDS_SIZE - 1;
487     idx = -1;
488     while (bot <= top)
489     {
490 	i = (top + bot) / 2;
491 	c = nv_cmds[nv_cmd_idx[i]].cmd_char;
492 	if (c < 0)
493 	    c = -c;
494 	if (cmdchar == c)
495 	{
496 	    idx = nv_cmd_idx[i];
497 	    break;
498 	}
499 	if (cmdchar > c)
500 	    bot = i + 1;
501 	else
502 	    top = i - 1;
503     }
504     return idx;
505 }
506 
507 /*
508  * Execute a command in Normal mode.
509  */
510     void
511 normal_cmd(
512     oparg_T	*oap,
513     int		toplevel UNUSED)	/* TRUE when called from main() */
514 {
515     cmdarg_T	ca;			/* command arguments */
516     int		c;
517     int		ctrl_w = FALSE;		/* got CTRL-W command */
518     int		old_col = curwin->w_curswant;
519 #ifdef FEAT_CMDL_INFO
520     int		need_flushbuf;		/* need to call out_flush() */
521 #endif
522     pos_T	old_pos;		/* cursor position before command */
523     int		mapped_len;
524     static int	old_mapped_len = 0;
525     int		idx;
526 #ifdef FEAT_EVAL
527     int		set_prevcount = FALSE;
528 #endif
529 
530     vim_memset(&ca, 0, sizeof(ca));	/* also resets ca.retval */
531     ca.oap = oap;
532 
533     /* Use a count remembered from before entering an operator.  After typing
534      * "3d" we return from normal_cmd() and come back here, the "3" is
535      * remembered in "opcount". */
536     ca.opcount = opcount;
537 
538     /*
539      * If there is an operator pending, then the command we take this time
540      * will terminate it. Finish_op tells us to finish the operation before
541      * returning this time (unless the operation was cancelled).
542      */
543 #ifdef CURSOR_SHAPE
544     c = finish_op;
545 #endif
546     finish_op = (oap->op_type != OP_NOP);
547 #ifdef CURSOR_SHAPE
548     if (finish_op != c)
549     {
550 	ui_cursor_shape();		/* may show different cursor shape */
551 # ifdef FEAT_MOUSESHAPE
552 	update_mouseshape(-1);
553 # endif
554     }
555 #endif
556 
557     /* When not finishing an operator and no register name typed, reset the
558      * count. */
559     if (!finish_op && !oap->regname)
560     {
561 	ca.opcount = 0;
562 #ifdef FEAT_EVAL
563 	set_prevcount = TRUE;
564 #endif
565     }
566 
567     /* Restore counts from before receiving K_CURSORHOLD.  This means after
568      * typing "3", handling K_CURSORHOLD and then typing "2" we get "32", not
569      * "3 * 2". */
570     if (oap->prev_opcount > 0 || oap->prev_count0 > 0)
571     {
572 	ca.opcount = oap->prev_opcount;
573 	ca.count0 = oap->prev_count0;
574 	oap->prev_opcount = 0;
575 	oap->prev_count0 = 0;
576     }
577 
578     mapped_len = typebuf_maplen();
579 
580     State = NORMAL_BUSY;
581 #ifdef USE_ON_FLY_SCROLL
582     dont_scroll = FALSE;	/* allow scrolling here */
583 #endif
584 
585 #ifdef FEAT_EVAL
586     /* Set v:count here, when called from main() and not a stuffed
587      * command, so that v:count can be used in an expression mapping
588      * when there is no count. Do set it for redo. */
589     if (toplevel && readbuf1_empty())
590 	set_vcount_ca(&ca, &set_prevcount);
591 #endif
592 
593     /*
594      * Get the command character from the user.
595      */
596     c = safe_vgetc();
597     LANGMAP_ADJUST(c, get_real_state() != SELECTMODE);
598 
599     /*
600      * If a mapping was started in Visual or Select mode, remember the length
601      * of the mapping.  This is used below to not return to Insert mode for as
602      * long as the mapping is being executed.
603      */
604     if (restart_edit == 0)
605 	old_mapped_len = 0;
606     else if (old_mapped_len
607 		|| (VIsual_active && mapped_len == 0 && typebuf_maplen() > 0))
608 	old_mapped_len = typebuf_maplen();
609 
610     if (c == NUL)
611 	c = K_ZERO;
612 
613     /*
614      * In Select mode, typed text replaces the selection.
615      */
616     if (VIsual_active
617 	    && VIsual_select
618 	    && (vim_isprintc(c) || c == NL || c == CAR || c == K_KENTER))
619     {
620 	/* Fake a "c"hange command.  When "restart_edit" is set (e.g., because
621 	 * 'insertmode' is set) fake a "d"elete command, Insert mode will
622 	 * restart automatically.
623 	 * Insert the typed character in the typeahead buffer, so that it can
624 	 * be mapped in Insert mode.  Required for ":lmap" to work. */
625 	ins_char_typebuf(c);
626 	if (restart_edit != 0)
627 	    c = 'd';
628 	else
629 	    c = 'c';
630 	msg_nowait = TRUE;	/* don't delay going to insert mode */
631 	old_mapped_len = 0;	/* do go to Insert mode */
632     }
633 
634 #ifdef FEAT_CMDL_INFO
635     need_flushbuf = add_to_showcmd(c);
636 #endif
637 
638 getcount:
639     if (!(VIsual_active && VIsual_select))
640     {
641 	/*
642 	 * Handle a count before a command and compute ca.count0.
643 	 * Note that '0' is a command and not the start of a count, but it's
644 	 * part of a count after other digits.
645 	 */
646 	while (    (c >= '1' && c <= '9')
647 		|| (ca.count0 != 0 && (c == K_DEL || c == K_KDEL || c == '0')))
648 	{
649 	    if (c == K_DEL || c == K_KDEL)
650 	    {
651 		ca.count0 /= 10;
652 #ifdef FEAT_CMDL_INFO
653 		del_from_showcmd(4);	/* delete the digit and ~@% */
654 #endif
655 	    }
656 	    else
657 		ca.count0 = ca.count0 * 10 + (c - '0');
658 	    if (ca.count0 < 0)	    /* got too large! */
659 		ca.count0 = 999999999L;
660 #ifdef FEAT_EVAL
661 	    /* Set v:count here, when called from main() and not a stuffed
662 	     * command, so that v:count can be used in an expression mapping
663 	     * right after the count. Do set it for redo. */
664 	    if (toplevel && readbuf1_empty())
665 		set_vcount_ca(&ca, &set_prevcount);
666 #endif
667 	    if (ctrl_w)
668 	    {
669 		++no_mapping;
670 		++allow_keys;		/* no mapping for nchar, but keys */
671 	    }
672 	    ++no_zero_mapping;		/* don't map zero here */
673 	    c = plain_vgetc();
674 	    LANGMAP_ADJUST(c, TRUE);
675 	    --no_zero_mapping;
676 	    if (ctrl_w)
677 	    {
678 		--no_mapping;
679 		--allow_keys;
680 	    }
681 #ifdef FEAT_CMDL_INFO
682 	    need_flushbuf |= add_to_showcmd(c);
683 #endif
684 	}
685 
686 	/*
687 	 * If we got CTRL-W there may be a/another count
688 	 */
689 	if (c == Ctrl_W && !ctrl_w && oap->op_type == OP_NOP)
690 	{
691 	    ctrl_w = TRUE;
692 	    ca.opcount = ca.count0;	/* remember first count */
693 	    ca.count0 = 0;
694 	    ++no_mapping;
695 	    ++allow_keys;		/* no mapping for nchar, but keys */
696 	    c = plain_vgetc();		/* get next character */
697 	    LANGMAP_ADJUST(c, TRUE);
698 	    --no_mapping;
699 	    --allow_keys;
700 #ifdef FEAT_CMDL_INFO
701 	    need_flushbuf |= add_to_showcmd(c);
702 #endif
703 	    goto getcount;		/* jump back */
704 	}
705     }
706 
707     if (c == K_CURSORHOLD)
708     {
709 	/* Save the count values so that ca.opcount and ca.count0 are exactly
710 	 * the same when coming back here after handling K_CURSORHOLD. */
711 	oap->prev_opcount = ca.opcount;
712 	oap->prev_count0 = ca.count0;
713     }
714     else if (ca.opcount != 0)
715     {
716 	/*
717 	 * If we're in the middle of an operator (including after entering a
718 	 * yank buffer with '"') AND we had a count before the operator, then
719 	 * that count overrides the current value of ca.count0.
720 	 * What this means effectively, is that commands like "3dw" get turned
721 	 * into "d3w" which makes things fall into place pretty neatly.
722 	 * If you give a count before AND after the operator, they are
723 	 * multiplied.
724 	 */
725 	if (ca.count0)
726 	    ca.count0 *= ca.opcount;
727 	else
728 	    ca.count0 = ca.opcount;
729     }
730 
731     /*
732      * Always remember the count.  It will be set to zero (on the next call,
733      * above) when there is no pending operator.
734      * When called from main(), save the count for use by the "count" built-in
735      * variable.
736      */
737     ca.opcount = ca.count0;
738     ca.count1 = (ca.count0 == 0 ? 1 : ca.count0);
739 
740 #ifdef FEAT_EVAL
741     /*
742      * Only set v:count when called from main() and not a stuffed command.
743      * Do set it for redo.
744      */
745     if (toplevel && readbuf1_empty())
746 	set_vcount(ca.count0, ca.count1, set_prevcount);
747 #endif
748 
749     /*
750      * Find the command character in the table of commands.
751      * For CTRL-W we already got nchar when looking for a count.
752      */
753     if (ctrl_w)
754     {
755 	ca.nchar = c;
756 	ca.cmdchar = Ctrl_W;
757     }
758     else
759 	ca.cmdchar = c;
760     idx = find_command(ca.cmdchar);
761     if (idx < 0)
762     {
763 	/* Not a known command: beep. */
764 	clearopbeep(oap);
765 	goto normal_end;
766     }
767 
768     if (text_locked() && (nv_cmds[idx].cmd_flags & NV_NCW))
769     {
770 	/* This command is not allowed while editing a cmdline: beep. */
771 	clearopbeep(oap);
772 	text_locked_msg();
773 	goto normal_end;
774     }
775     if ((nv_cmds[idx].cmd_flags & NV_NCW) && curbuf_locked())
776 	goto normal_end;
777 
778     /*
779      * In Visual/Select mode, a few keys are handled in a special way.
780      */
781     if (VIsual_active)
782     {
783 	/* when 'keymodel' contains "stopsel" may stop Select/Visual mode */
784 	if (km_stopsel
785 		&& (nv_cmds[idx].cmd_flags & NV_STS)
786 		&& !(mod_mask & MOD_MASK_SHIFT))
787 	{
788 	    end_visual_mode();
789 	    redraw_curbuf_later(INVERTED);
790 	}
791 
792 	/* Keys that work different when 'keymodel' contains "startsel" */
793 	if (km_startsel)
794 	{
795 	    if (nv_cmds[idx].cmd_flags & NV_SS)
796 	    {
797 		unshift_special(&ca);
798 		idx = find_command(ca.cmdchar);
799 		if (idx < 0)
800 		{
801 		    /* Just in case */
802 		    clearopbeep(oap);
803 		    goto normal_end;
804 		}
805 	    }
806 	    else if ((nv_cmds[idx].cmd_flags & NV_SSS)
807 					       && (mod_mask & MOD_MASK_SHIFT))
808 		mod_mask &= ~MOD_MASK_SHIFT;
809 	}
810     }
811 
812 #ifdef FEAT_RIGHTLEFT
813     if (curwin->w_p_rl && KeyTyped && !KeyStuffed
814 					  && (nv_cmds[idx].cmd_flags & NV_RL))
815     {
816 	/* Invert horizontal movements and operations.  Only when typed by the
817 	 * user directly, not when the result of a mapping or "x" translated
818 	 * to "dl". */
819 	switch (ca.cmdchar)
820 	{
821 	    case 'l':	    ca.cmdchar = 'h'; break;
822 	    case K_RIGHT:   ca.cmdchar = K_LEFT; break;
823 	    case K_S_RIGHT: ca.cmdchar = K_S_LEFT; break;
824 	    case K_C_RIGHT: ca.cmdchar = K_C_LEFT; break;
825 	    case 'h':	    ca.cmdchar = 'l'; break;
826 	    case K_LEFT:    ca.cmdchar = K_RIGHT; break;
827 	    case K_S_LEFT:  ca.cmdchar = K_S_RIGHT; break;
828 	    case K_C_LEFT:  ca.cmdchar = K_C_RIGHT; break;
829 	    case '>':	    ca.cmdchar = '<'; break;
830 	    case '<':	    ca.cmdchar = '>'; break;
831 	}
832 	idx = find_command(ca.cmdchar);
833     }
834 #endif
835 
836     /*
837      * Get an additional character if we need one.
838      */
839     if ((nv_cmds[idx].cmd_flags & NV_NCH)
840 	    && (((nv_cmds[idx].cmd_flags & NV_NCH_NOP) == NV_NCH_NOP
841 		    && oap->op_type == OP_NOP)
842 		|| (nv_cmds[idx].cmd_flags & NV_NCH_ALW) == NV_NCH_ALW
843 		|| (ca.cmdchar == 'q'
844 		    && oap->op_type == OP_NOP
845 		    && reg_recording == 0
846 		    && reg_executing == 0)
847 		|| ((ca.cmdchar == 'a' || ca.cmdchar == 'i')
848 		    && (oap->op_type != OP_NOP || VIsual_active))))
849     {
850 	int	*cp;
851 	int	repl = FALSE;	/* get character for replace mode */
852 	int	lit = FALSE;	/* get extra character literally */
853 	int	langmap_active = FALSE;    /* using :lmap mappings */
854 	int	lang;		/* getting a text character */
855 #ifdef HAVE_INPUT_METHOD
856 	int	save_smd;	/* saved value of p_smd */
857 #endif
858 
859 	++no_mapping;
860 	++allow_keys;		/* no mapping for nchar, but allow key codes */
861 	/* Don't generate a CursorHold event here, most commands can't handle
862 	 * it, e.g., nv_replace(), nv_csearch(). */
863 	did_cursorhold = TRUE;
864 	if (ca.cmdchar == 'g')
865 	{
866 	    /*
867 	     * For 'g' get the next character now, so that we can check for
868 	     * "gr", "g'" and "g`".
869 	     */
870 	    ca.nchar = plain_vgetc();
871 	    LANGMAP_ADJUST(ca.nchar, TRUE);
872 #ifdef FEAT_CMDL_INFO
873 	    need_flushbuf |= add_to_showcmd(ca.nchar);
874 #endif
875 	    if (ca.nchar == 'r' || ca.nchar == '\'' || ca.nchar == '`'
876 						       || ca.nchar == Ctrl_BSL)
877 	    {
878 		cp = &ca.extra_char;	/* need to get a third character */
879 		if (ca.nchar != 'r')
880 		    lit = TRUE;			/* get it literally */
881 		else
882 		    repl = TRUE;		/* get it in replace mode */
883 	    }
884 	    else
885 		cp = NULL;		/* no third character needed */
886 	}
887 	else
888 	{
889 	    if (ca.cmdchar == 'r')		/* get it in replace mode */
890 		repl = TRUE;
891 	    cp = &ca.nchar;
892 	}
893 	lang = (repl || (nv_cmds[idx].cmd_flags & NV_LANG));
894 
895 	/*
896 	 * Get a second or third character.
897 	 */
898 	if (cp != NULL)
899 	{
900 #ifdef CURSOR_SHAPE
901 	    if (repl)
902 	    {
903 		State = REPLACE;	/* pretend Replace mode */
904 		ui_cursor_shape();	/* show different cursor shape */
905 	    }
906 #endif
907 	    if (lang && curbuf->b_p_iminsert == B_IMODE_LMAP)
908 	    {
909 		/* Allow mappings defined with ":lmap". */
910 		--no_mapping;
911 		--allow_keys;
912 		if (repl)
913 		    State = LREPLACE;
914 		else
915 		    State = LANGMAP;
916 		langmap_active = TRUE;
917 	    }
918 #ifdef HAVE_INPUT_METHOD
919 	    save_smd = p_smd;
920 	    p_smd = FALSE;	/* Don't let the IM code show the mode here */
921 	    if (lang && curbuf->b_p_iminsert == B_IMODE_IM)
922 		im_set_active(TRUE);
923 #endif
924 
925 	    *cp = plain_vgetc();
926 
927 	    if (langmap_active)
928 	    {
929 		/* Undo the decrement done above */
930 		++no_mapping;
931 		++allow_keys;
932 		State = NORMAL_BUSY;
933 	    }
934 #ifdef HAVE_INPUT_METHOD
935 	    if (lang)
936 	    {
937 		if (curbuf->b_p_iminsert != B_IMODE_LMAP)
938 		    im_save_status(&curbuf->b_p_iminsert);
939 		im_set_active(FALSE);
940 	    }
941 	    p_smd = save_smd;
942 #endif
943 #ifdef CURSOR_SHAPE
944 	    State = NORMAL_BUSY;
945 #endif
946 #ifdef FEAT_CMDL_INFO
947 	    need_flushbuf |= add_to_showcmd(*cp);
948 #endif
949 
950 	    if (!lit)
951 	    {
952 #ifdef FEAT_DIGRAPHS
953 		/* Typing CTRL-K gets a digraph. */
954 		if (*cp == Ctrl_K
955 			&& ((nv_cmds[idx].cmd_flags & NV_LANG)
956 			    || cp == &ca.extra_char)
957 			&& vim_strchr(p_cpo, CPO_DIGRAPH) == NULL)
958 		{
959 		    c = get_digraph(FALSE);
960 		    if (c > 0)
961 		    {
962 			*cp = c;
963 # ifdef FEAT_CMDL_INFO
964 			/* Guessing how to update showcmd here... */
965 			del_from_showcmd(3);
966 			need_flushbuf |= add_to_showcmd(*cp);
967 # endif
968 		    }
969 		}
970 #endif
971 
972 		/* adjust chars > 127, except after "tTfFr" commands */
973 		LANGMAP_ADJUST(*cp, !lang);
974 #ifdef FEAT_RIGHTLEFT
975 		/* adjust Hebrew mapped char */
976 		if (p_hkmap && lang && KeyTyped)
977 		    *cp = hkmap(*cp);
978 #endif
979 	    }
980 
981 	    /*
982 	     * When the next character is CTRL-\ a following CTRL-N means the
983 	     * command is aborted and we go to Normal mode.
984 	     */
985 	    if (cp == &ca.extra_char
986 		    && ca.nchar == Ctrl_BSL
987 		    && (ca.extra_char == Ctrl_N || ca.extra_char == Ctrl_G))
988 	    {
989 		ca.cmdchar = Ctrl_BSL;
990 		ca.nchar = ca.extra_char;
991 		idx = find_command(ca.cmdchar);
992 	    }
993 	    else if ((ca.nchar == 'n' || ca.nchar == 'N') && ca.cmdchar == 'g')
994 		ca.oap->op_type = get_op_type(*cp, NUL);
995 	    else if (*cp == Ctrl_BSL)
996 	    {
997 		long towait = (p_ttm >= 0 ? p_ttm : p_tm);
998 
999 		/* There is a busy wait here when typing "f<C-\>" and then
1000 		 * something different from CTRL-N.  Can't be avoided. */
1001 		while ((c = vpeekc()) <= 0 && towait > 0L)
1002 		{
1003 		    do_sleep(towait > 50L ? 50L : towait);
1004 		    towait -= 50L;
1005 		}
1006 		if (c > 0)
1007 		{
1008 		    c = plain_vgetc();
1009 		    if (c != Ctrl_N && c != Ctrl_G)
1010 			vungetc(c);
1011 		    else
1012 		    {
1013 			ca.cmdchar = Ctrl_BSL;
1014 			ca.nchar = c;
1015 			idx = find_command(ca.cmdchar);
1016 		    }
1017 		}
1018 	    }
1019 
1020 	    /* When getting a text character and the next character is a
1021 	     * multi-byte character, it could be a composing character.
1022 	     * However, don't wait for it to arrive. Also, do enable mapping,
1023 	     * because if it's put back with vungetc() it's too late to apply
1024 	     * mapping. */
1025 	    --no_mapping;
1026 	    while (enc_utf8 && lang && (c = vpeekc()) > 0
1027 				 && (c >= 0x100 || MB_BYTE2LEN(vpeekc()) > 1))
1028 	    {
1029 		c = plain_vgetc();
1030 		if (!utf_iscomposing(c))
1031 		{
1032 		    vungetc(c);		/* it wasn't, put it back */
1033 		    break;
1034 		}
1035 		else if (ca.ncharC1 == 0)
1036 		    ca.ncharC1 = c;
1037 		else
1038 		    ca.ncharC2 = c;
1039 	    }
1040 	    ++no_mapping;
1041 	}
1042 	--no_mapping;
1043 	--allow_keys;
1044     }
1045 
1046 #ifdef FEAT_CMDL_INFO
1047     /*
1048      * Flush the showcmd characters onto the screen so we can see them while
1049      * the command is being executed.  Only do this when the shown command was
1050      * actually displayed, otherwise this will slow down a lot when executing
1051      * mappings.
1052      */
1053     if (need_flushbuf)
1054 	out_flush();
1055 #endif
1056     if (ca.cmdchar != K_IGNORE)
1057 	did_cursorhold = FALSE;
1058 
1059     State = NORMAL;
1060 
1061     if (ca.nchar == ESC)
1062     {
1063 	clearop(oap);
1064 	if (restart_edit == 0 && goto_im())
1065 	    restart_edit = 'a';
1066 	goto normal_end;
1067     }
1068 
1069     if (ca.cmdchar != K_IGNORE)
1070     {
1071 	msg_didout = FALSE;    /* don't scroll screen up for normal command */
1072 	msg_col = 0;
1073     }
1074 
1075     old_pos = curwin->w_cursor;		/* remember where cursor was */
1076 
1077     /* When 'keymodel' contains "startsel" some keys start Select/Visual
1078      * mode. */
1079     if (!VIsual_active && km_startsel)
1080     {
1081 	if (nv_cmds[idx].cmd_flags & NV_SS)
1082 	{
1083 	    start_selection();
1084 	    unshift_special(&ca);
1085 	    idx = find_command(ca.cmdchar);
1086 	}
1087 	else if ((nv_cmds[idx].cmd_flags & NV_SSS)
1088 					   && (mod_mask & MOD_MASK_SHIFT))
1089 	{
1090 	    start_selection();
1091 	    mod_mask &= ~MOD_MASK_SHIFT;
1092 	}
1093     }
1094 
1095     /*
1096      * Execute the command!
1097      * Call the command function found in the commands table.
1098      */
1099     ca.arg = nv_cmds[idx].cmd_arg;
1100     (nv_cmds[idx].cmd_func)(&ca);
1101 
1102     /*
1103      * If we didn't start or finish an operator, reset oap->regname, unless we
1104      * need it later.
1105      */
1106     if (!finish_op
1107 	    && !oap->op_type
1108 	    && (idx < 0 || !(nv_cmds[idx].cmd_flags & NV_KEEPREG)))
1109     {
1110 	clearop(oap);
1111 #ifdef FEAT_EVAL
1112 	{
1113 	    int regname = 0;
1114 
1115 	    /* Adjust the register according to 'clipboard', so that when
1116 	     * "unnamed" is present it becomes '*' or '+' instead of '"'. */
1117 # ifdef FEAT_CLIPBOARD
1118 	    adjust_clip_reg(&regname);
1119 # endif
1120 	    set_reg_var(regname);
1121 	}
1122 #endif
1123     }
1124 
1125     /* Get the length of mapped chars again after typing a count, second
1126      * character or "z333<cr>". */
1127     if (old_mapped_len > 0)
1128 	old_mapped_len = typebuf_maplen();
1129 
1130     /*
1131      * If an operation is pending, handle it...
1132      */
1133     do_pending_operator(&ca, old_col, FALSE);
1134 
1135     /*
1136      * Wait for a moment when a message is displayed that will be overwritten
1137      * by the mode message.
1138      * In Visual mode and with "^O" in Insert mode, a short message will be
1139      * overwritten by the mode message.  Wait a bit, until a key is hit.
1140      * In Visual mode, it's more important to keep the Visual area updated
1141      * than keeping a message (e.g. from a /pat search).
1142      * Only do this if the command was typed, not from a mapping.
1143      * Don't wait when emsg_silent is non-zero.
1144      * Also wait a bit after an error message, e.g. for "^O:".
1145      * Don't redraw the screen, it would remove the message.
1146      */
1147     if (       ((p_smd
1148 		    && msg_silent == 0
1149 		    && (restart_edit != 0
1150 			|| (VIsual_active
1151 			    && old_pos.lnum == curwin->w_cursor.lnum
1152 			    && old_pos.col == curwin->w_cursor.col)
1153 		       )
1154 		    && (clear_cmdline
1155 			|| redraw_cmdline)
1156 		    && (msg_didout || (msg_didany && msg_scroll))
1157 		    && !msg_nowait
1158 		    && KeyTyped)
1159 		|| (restart_edit != 0
1160 		    && !VIsual_active
1161 		    && (msg_scroll
1162 			|| emsg_on_display)))
1163 	    && oap->regname == 0
1164 	    && !(ca.retval & CA_COMMAND_BUSY)
1165 	    && stuff_empty()
1166 	    && typebuf_typed()
1167 	    && emsg_silent == 0
1168 	    && !did_wait_return
1169 	    && oap->op_type == OP_NOP)
1170     {
1171 	int	save_State = State;
1172 
1173 	/* Draw the cursor with the right shape here */
1174 	if (restart_edit != 0)
1175 	    State = INSERT;
1176 
1177 	/* If need to redraw, and there is a "keep_msg", redraw before the
1178 	 * delay */
1179 	if (must_redraw && keep_msg != NULL && !emsg_on_display)
1180 	{
1181 	    char_u	*kmsg;
1182 
1183 	    kmsg = keep_msg;
1184 	    keep_msg = NULL;
1185 	    /* showmode() will clear keep_msg, but we want to use it anyway */
1186 	    update_screen(0);
1187 	    /* now reset it, otherwise it's put in the history again */
1188 	    keep_msg = kmsg;
1189 	    msg_attr((char *)kmsg, keep_msg_attr);
1190 	    vim_free(kmsg);
1191 	}
1192 	setcursor();
1193 	cursor_on();
1194 	out_flush();
1195 	if (msg_scroll || emsg_on_display)
1196 	    ui_delay(1000L, TRUE);	/* wait at least one second */
1197 	ui_delay(3000L, FALSE);		/* wait up to three seconds */
1198 	State = save_State;
1199 
1200 	msg_scroll = FALSE;
1201 	emsg_on_display = FALSE;
1202     }
1203 
1204     /*
1205      * Finish up after executing a Normal mode command.
1206      */
1207 normal_end:
1208 
1209     msg_nowait = FALSE;
1210 
1211     /* Reset finish_op, in case it was set */
1212 #ifdef CURSOR_SHAPE
1213     c = finish_op;
1214 #endif
1215     finish_op = FALSE;
1216 #ifdef CURSOR_SHAPE
1217     /* Redraw the cursor with another shape, if we were in Operator-pending
1218      * mode or did a replace command. */
1219     if (c || ca.cmdchar == 'r')
1220     {
1221 	ui_cursor_shape();		/* may show different cursor shape */
1222 # ifdef FEAT_MOUSESHAPE
1223 	update_mouseshape(-1);
1224 # endif
1225     }
1226 #endif
1227 
1228 #ifdef FEAT_CMDL_INFO
1229     if (oap->op_type == OP_NOP && oap->regname == 0
1230 	    && ca.cmdchar != K_CURSORHOLD)
1231 	clear_showcmd();
1232 #endif
1233 
1234     checkpcmark();		/* check if we moved since setting pcmark */
1235     vim_free(ca.searchbuf);
1236 
1237     if (has_mbyte)
1238 	mb_adjust_cursor();
1239 
1240     if (curwin->w_p_scb && toplevel)
1241     {
1242 	validate_cursor();	/* may need to update w_leftcol */
1243 	do_check_scrollbind(TRUE);
1244     }
1245 
1246     if (curwin->w_p_crb && toplevel)
1247     {
1248 	validate_cursor();	/* may need to update w_leftcol */
1249 	do_check_cursorbind();
1250     }
1251 
1252 #ifdef FEAT_TERMINAL
1253     /* don't go to Insert mode if a terminal has a running job */
1254     if (term_job_running(curbuf->b_term))
1255 	restart_edit = 0;
1256 #endif
1257 
1258     /*
1259      * May restart edit(), if we got here with CTRL-O in Insert mode (but not
1260      * if still inside a mapping that started in Visual mode).
1261      * May switch from Visual to Select mode after CTRL-O command.
1262      */
1263     if (       oap->op_type == OP_NOP
1264 	    && ((restart_edit != 0 && !VIsual_active && old_mapped_len == 0)
1265 		|| restart_VIsual_select == 1)
1266 	    && !(ca.retval & CA_COMMAND_BUSY)
1267 	    && stuff_empty()
1268 	    && oap->regname == 0)
1269     {
1270 	if (restart_VIsual_select == 1)
1271 	{
1272 	    VIsual_select = TRUE;
1273 	    showmode();
1274 	    restart_VIsual_select = 0;
1275 	}
1276 	if (restart_edit != 0 && !VIsual_active && old_mapped_len == 0)
1277 	    (void)edit(restart_edit, FALSE, 1L);
1278     }
1279 
1280     if (restart_VIsual_select == 2)
1281 	restart_VIsual_select = 1;
1282 
1283     /* Save count before an operator for next time. */
1284     opcount = ca.opcount;
1285 }
1286 
1287 #ifdef FEAT_EVAL
1288 /*
1289  * Set v:count and v:count1 according to "cap".
1290  * Set v:prevcount only when "set_prevcount" is TRUE.
1291  */
1292     static void
1293 set_vcount_ca(cmdarg_T *cap, int *set_prevcount)
1294 {
1295     long count = cap->count0;
1296 
1297     /* multiply with cap->opcount the same way as above */
1298     if (cap->opcount != 0)
1299 	count = cap->opcount * (count == 0 ? 1 : count);
1300     set_vcount(count, count == 0 ? 1 : count, *set_prevcount);
1301     *set_prevcount = FALSE;  /* only set v:prevcount once */
1302 }
1303 #endif
1304 
1305 /*
1306  * Handle an operator after Visual mode or when the movement is finished.
1307  * "gui_yank" is true when yanking text for the clipboard.
1308  */
1309     void
1310 do_pending_operator(cmdarg_T *cap, int old_col, int gui_yank)
1311 {
1312     oparg_T	*oap = cap->oap;
1313     pos_T	old_cursor;
1314     int		empty_region_error;
1315     int		restart_edit_save;
1316 #ifdef FEAT_LINEBREAK
1317     int		lbr_saved = curwin->w_p_lbr;
1318 #endif
1319 
1320     /* The visual area is remembered for redo */
1321     static int	    redo_VIsual_mode = NUL; /* 'v', 'V', or Ctrl-V */
1322     static linenr_T redo_VIsual_line_count; /* number of lines */
1323     static colnr_T  redo_VIsual_vcol;	    /* number of cols or end column */
1324     static long	    redo_VIsual_count;	    /* count for Visual operator */
1325     static int	    redo_VIsual_arg;	    /* extra argument */
1326     int		    include_line_break = FALSE;
1327 
1328 #if defined(FEAT_CLIPBOARD)
1329     /*
1330      * Yank the visual area into the GUI selection register before we operate
1331      * on it and lose it forever.
1332      * Don't do it if a specific register was specified, so that ""x"*P works.
1333      * This could call do_pending_operator() recursively, but that's OK
1334      * because gui_yank will be TRUE for the nested call.
1335      */
1336     if ((clip_star.available || clip_plus.available)
1337 	    && oap->op_type != OP_NOP
1338 	    && !gui_yank
1339 	    && VIsual_active
1340 	    && !redo_VIsual_busy
1341 	    && oap->regname == 0)
1342 	clip_auto_select();
1343 #endif
1344     old_cursor = curwin->w_cursor;
1345 
1346     /*
1347      * If an operation is pending, handle it...
1348      */
1349     if ((finish_op || VIsual_active) && oap->op_type != OP_NOP)
1350     {
1351 	// Yank can be redone when 'y' is in 'cpoptions', but not when yanking
1352 	// for the clipboard.
1353 	int	redo_yank = vim_strchr(p_cpo, CPO_YANK) != NULL && !gui_yank;
1354 
1355 #ifdef FEAT_LINEBREAK
1356 	/* Avoid a problem with unwanted linebreaks in block mode. */
1357 	if (curwin->w_p_lbr)
1358 	    curwin->w_valid &= ~VALID_VIRTCOL;
1359 	curwin->w_p_lbr = FALSE;
1360 #endif
1361 	oap->is_VIsual = VIsual_active;
1362 	if (oap->motion_force == 'V')
1363 	    oap->motion_type = MLINE;
1364 	else if (oap->motion_force == 'v')
1365 	{
1366 	    /* If the motion was linewise, "inclusive" will not have been set.
1367 	     * Use "exclusive" to be consistent.  Makes "dvj" work nice. */
1368 	    if (oap->motion_type == MLINE)
1369 		oap->inclusive = FALSE;
1370 	    /* If the motion already was characterwise, toggle "inclusive" */
1371 	    else if (oap->motion_type == MCHAR)
1372 		oap->inclusive = !oap->inclusive;
1373 	    oap->motion_type = MCHAR;
1374 	}
1375 	else if (oap->motion_force == Ctrl_V)
1376 	{
1377 	    /* Change line- or characterwise motion into Visual block mode. */
1378 	    if (!VIsual_active)
1379 	    {
1380 		VIsual_active = TRUE;
1381 		VIsual = oap->start;
1382 	    }
1383 	    VIsual_mode = Ctrl_V;
1384 	    VIsual_select = FALSE;
1385 	    VIsual_reselect = FALSE;
1386 	}
1387 
1388 	/* Only redo yank when 'y' flag is in 'cpoptions'. */
1389 	/* Never redo "zf" (define fold). */
1390 	if ((redo_yank || oap->op_type != OP_YANK)
1391 		&& ((!VIsual_active || oap->motion_force)
1392 		    /* Also redo Operator-pending Visual mode mappings */
1393 		    || (VIsual_active && cap->cmdchar == ':'
1394 						 && oap->op_type != OP_COLON))
1395 		&& cap->cmdchar != 'D'
1396 #ifdef FEAT_FOLDING
1397 		&& oap->op_type != OP_FOLD
1398 		&& oap->op_type != OP_FOLDOPEN
1399 		&& oap->op_type != OP_FOLDOPENREC
1400 		&& oap->op_type != OP_FOLDCLOSE
1401 		&& oap->op_type != OP_FOLDCLOSEREC
1402 		&& oap->op_type != OP_FOLDDEL
1403 		&& oap->op_type != OP_FOLDDELREC
1404 #endif
1405 		)
1406 	{
1407 	    prep_redo(oap->regname, cap->count0,
1408 		    get_op_char(oap->op_type), get_extra_op_char(oap->op_type),
1409 		    oap->motion_force, cap->cmdchar, cap->nchar);
1410 	    if (cap->cmdchar == '/' || cap->cmdchar == '?') /* was a search */
1411 	    {
1412 		/*
1413 		 * If 'cpoptions' does not contain 'r', insert the search
1414 		 * pattern to really repeat the same command.
1415 		 */
1416 		if (vim_strchr(p_cpo, CPO_REDO) == NULL)
1417 		    AppendToRedobuffLit(cap->searchbuf, -1);
1418 		AppendToRedobuff(NL_STR);
1419 	    }
1420 	    else if (cap->cmdchar == ':')
1421 	    {
1422 		/* do_cmdline() has stored the first typed line in
1423 		 * "repeat_cmdline".  When several lines are typed repeating
1424 		 * won't be possible. */
1425 		if (repeat_cmdline == NULL)
1426 		    ResetRedobuff();
1427 		else
1428 		{
1429 		    AppendToRedobuffLit(repeat_cmdline, -1);
1430 		    AppendToRedobuff(NL_STR);
1431 		    VIM_CLEAR(repeat_cmdline);
1432 		}
1433 	    }
1434 	}
1435 
1436 	if (redo_VIsual_busy)
1437 	{
1438 	    /* Redo of an operation on a Visual area. Use the same size from
1439 	     * redo_VIsual_line_count and redo_VIsual_vcol. */
1440 	    oap->start = curwin->w_cursor;
1441 	    curwin->w_cursor.lnum += redo_VIsual_line_count - 1;
1442 	    if (curwin->w_cursor.lnum > curbuf->b_ml.ml_line_count)
1443 		curwin->w_cursor.lnum = curbuf->b_ml.ml_line_count;
1444 	    VIsual_mode = redo_VIsual_mode;
1445 	    if (redo_VIsual_vcol == MAXCOL || VIsual_mode == 'v')
1446 	    {
1447 		if (VIsual_mode == 'v')
1448 		{
1449 		    if (redo_VIsual_line_count <= 1)
1450 		    {
1451 			validate_virtcol();
1452 			curwin->w_curswant =
1453 				     curwin->w_virtcol + redo_VIsual_vcol - 1;
1454 		    }
1455 		    else
1456 			curwin->w_curswant = redo_VIsual_vcol;
1457 		}
1458 		else
1459 		{
1460 		    curwin->w_curswant = MAXCOL;
1461 		}
1462 		coladvance(curwin->w_curswant);
1463 	    }
1464 	    cap->count0 = redo_VIsual_count;
1465 	    if (redo_VIsual_count != 0)
1466 		cap->count1 = redo_VIsual_count;
1467 	    else
1468 		cap->count1 = 1;
1469 	}
1470 	else if (VIsual_active)
1471 	{
1472 	    if (!gui_yank)
1473 	    {
1474 		/* Save the current VIsual area for '< and '> marks, and "gv" */
1475 		curbuf->b_visual.vi_start = VIsual;
1476 		curbuf->b_visual.vi_end = curwin->w_cursor;
1477 		curbuf->b_visual.vi_mode = VIsual_mode;
1478 		if (VIsual_mode_orig != NUL)
1479 		{
1480 		    curbuf->b_visual.vi_mode = VIsual_mode_orig;
1481 		    VIsual_mode_orig = NUL;
1482 		}
1483 		curbuf->b_visual.vi_curswant = curwin->w_curswant;
1484 # ifdef FEAT_EVAL
1485 		curbuf->b_visual_mode_eval = VIsual_mode;
1486 # endif
1487 	    }
1488 
1489 	    /* In Select mode, a linewise selection is operated upon like a
1490 	     * characterwise selection.
1491 	     * Special case: gH<Del> deletes the last line. */
1492 	    if (VIsual_select && VIsual_mode == 'V'
1493 					    && cap->oap->op_type != OP_DELETE)
1494 	    {
1495 		if (LT_POS(VIsual, curwin->w_cursor))
1496 		{
1497 		    VIsual.col = 0;
1498 		    curwin->w_cursor.col =
1499 			       (colnr_T)STRLEN(ml_get(curwin->w_cursor.lnum));
1500 		}
1501 		else
1502 		{
1503 		    curwin->w_cursor.col = 0;
1504 		    VIsual.col = (colnr_T)STRLEN(ml_get(VIsual.lnum));
1505 		}
1506 		VIsual_mode = 'v';
1507 	    }
1508 	    /* If 'selection' is "exclusive", backup one character for
1509 	     * charwise selections. */
1510 	    else if (VIsual_mode == 'v')
1511 		include_line_break = unadjust_for_sel();
1512 
1513 	    oap->start = VIsual;
1514 	    if (VIsual_mode == 'V')
1515 	    {
1516 		oap->start.col = 0;
1517 		oap->start.coladd = 0;
1518 	    }
1519 	}
1520 
1521 	/*
1522 	 * Set oap->start to the first position of the operated text, oap->end
1523 	 * to the end of the operated text.  w_cursor is equal to oap->start.
1524 	 */
1525 	if (LT_POS(oap->start, curwin->w_cursor))
1526 	{
1527 #ifdef FEAT_FOLDING
1528 	    /* Include folded lines completely. */
1529 	    if (!VIsual_active)
1530 	    {
1531 		if (hasFolding(oap->start.lnum, &oap->start.lnum, NULL))
1532 		    oap->start.col = 0;
1533 		if (hasFolding(curwin->w_cursor.lnum, NULL,
1534 						      &curwin->w_cursor.lnum))
1535 		    curwin->w_cursor.col = (colnr_T)STRLEN(ml_get_curline());
1536 	    }
1537 #endif
1538 	    oap->end = curwin->w_cursor;
1539 	    curwin->w_cursor = oap->start;
1540 
1541 	    /* w_virtcol may have been updated; if the cursor goes back to its
1542 	     * previous position w_virtcol becomes invalid and isn't updated
1543 	     * automatically. */
1544 	    curwin->w_valid &= ~VALID_VIRTCOL;
1545 	}
1546 	else
1547 	{
1548 #ifdef FEAT_FOLDING
1549 	    /* Include folded lines completely. */
1550 	    if (!VIsual_active && oap->motion_type == MLINE)
1551 	    {
1552 		if (hasFolding(curwin->w_cursor.lnum, &curwin->w_cursor.lnum,
1553 									NULL))
1554 		    curwin->w_cursor.col = 0;
1555 		if (hasFolding(oap->start.lnum, NULL, &oap->start.lnum))
1556 		    oap->start.col = (colnr_T)STRLEN(ml_get(oap->start.lnum));
1557 	    }
1558 #endif
1559 	    oap->end = oap->start;
1560 	    oap->start = curwin->w_cursor;
1561 	}
1562 
1563 	/* Just in case lines were deleted that make the position invalid. */
1564 	check_pos(curwin->w_buffer, &oap->end);
1565 	oap->line_count = oap->end.lnum - oap->start.lnum + 1;
1566 
1567 	/* Set "virtual_op" before resetting VIsual_active. */
1568 	virtual_op = virtual_active();
1569 
1570 	if (VIsual_active || redo_VIsual_busy)
1571 	{
1572 	    get_op_vcol(oap, redo_VIsual_vcol, TRUE);
1573 
1574 	    if (!redo_VIsual_busy && !gui_yank)
1575 	    {
1576 		/*
1577 		 * Prepare to reselect and redo Visual: this is based on the
1578 		 * size of the Visual text
1579 		 */
1580 		resel_VIsual_mode = VIsual_mode;
1581 		if (curwin->w_curswant == MAXCOL)
1582 		    resel_VIsual_vcol = MAXCOL;
1583 		else
1584 		{
1585 		    if (VIsual_mode != Ctrl_V)
1586 			getvvcol(curwin, &(oap->end),
1587 						  NULL, NULL, &oap->end_vcol);
1588 		    if (VIsual_mode == Ctrl_V || oap->line_count <= 1)
1589 		    {
1590 			if (VIsual_mode != Ctrl_V)
1591 			    getvvcol(curwin, &(oap->start),
1592 						&oap->start_vcol, NULL, NULL);
1593 			resel_VIsual_vcol = oap->end_vcol - oap->start_vcol + 1;
1594 		    }
1595 		    else
1596 			resel_VIsual_vcol = oap->end_vcol;
1597 		}
1598 		resel_VIsual_line_count = oap->line_count;
1599 	    }
1600 
1601 	    /* can't redo yank (unless 'y' is in 'cpoptions') and ":" */
1602 	    if ((redo_yank || oap->op_type != OP_YANK)
1603 		    && oap->op_type != OP_COLON
1604 #ifdef FEAT_FOLDING
1605 		    && oap->op_type != OP_FOLD
1606 		    && oap->op_type != OP_FOLDOPEN
1607 		    && oap->op_type != OP_FOLDOPENREC
1608 		    && oap->op_type != OP_FOLDCLOSE
1609 		    && oap->op_type != OP_FOLDCLOSEREC
1610 		    && oap->op_type != OP_FOLDDEL
1611 		    && oap->op_type != OP_FOLDDELREC
1612 #endif
1613 		    && oap->motion_force == NUL
1614 		    )
1615 	    {
1616 		/* Prepare for redoing.  Only use the nchar field for "r",
1617 		 * otherwise it might be the second char of the operator. */
1618 		if (cap->cmdchar == 'g' && (cap->nchar == 'n'
1619 							|| cap->nchar == 'N'))
1620 		    prep_redo(oap->regname, cap->count0,
1621 			    get_op_char(oap->op_type), get_extra_op_char(oap->op_type),
1622 			    oap->motion_force, cap->cmdchar, cap->nchar);
1623 		else if (cap->cmdchar != ':')
1624 		{
1625 		    int nchar = oap->op_type == OP_REPLACE ? cap->nchar : NUL;
1626 
1627 		    /* reverse what nv_replace() did */
1628 		    if (nchar == REPLACE_CR_NCHAR)
1629 			nchar = CAR;
1630 		    else if (nchar == REPLACE_NL_NCHAR)
1631 			nchar = NL;
1632 		    prep_redo(oap->regname, 0L, NUL, 'v',
1633 					get_op_char(oap->op_type),
1634 					get_extra_op_char(oap->op_type),
1635 					nchar);
1636 		}
1637 		if (!redo_VIsual_busy)
1638 		{
1639 		    redo_VIsual_mode = resel_VIsual_mode;
1640 		    redo_VIsual_vcol = resel_VIsual_vcol;
1641 		    redo_VIsual_line_count = resel_VIsual_line_count;
1642 		    redo_VIsual_count = cap->count0;
1643 		    redo_VIsual_arg = cap->arg;
1644 		}
1645 	    }
1646 
1647 	    /*
1648 	     * oap->inclusive defaults to TRUE.
1649 	     * If oap->end is on a NUL (empty line) oap->inclusive becomes
1650 	     * FALSE.  This makes "d}P" and "v}dP" work the same.
1651 	     */
1652 	    if (oap->motion_force == NUL || oap->motion_type == MLINE)
1653 		oap->inclusive = TRUE;
1654 	    if (VIsual_mode == 'V')
1655 		oap->motion_type = MLINE;
1656 	    else
1657 	    {
1658 		oap->motion_type = MCHAR;
1659 		if (VIsual_mode != Ctrl_V && *ml_get_pos(&(oap->end)) == NUL
1660 			&& (include_line_break || !virtual_op))
1661 		{
1662 		    oap->inclusive = FALSE;
1663 		    /* Try to include the newline, unless it's an operator
1664 		     * that works on lines only. */
1665 		    if (*p_sel != 'o'
1666 			    && !op_on_lines(oap->op_type)
1667 			    && oap->end.lnum < curbuf->b_ml.ml_line_count)
1668 		    {
1669 			++oap->end.lnum;
1670 			oap->end.col = 0;
1671 			oap->end.coladd = 0;
1672 			++oap->line_count;
1673 		    }
1674 		}
1675 	    }
1676 
1677 	    redo_VIsual_busy = FALSE;
1678 
1679 	    /*
1680 	     * Switch Visual off now, so screen updating does
1681 	     * not show inverted text when the screen is redrawn.
1682 	     * With OP_YANK and sometimes with OP_COLON and OP_FILTER there is
1683 	     * no screen redraw, so it is done here to remove the inverted
1684 	     * part.
1685 	     */
1686 	    if (!gui_yank)
1687 	    {
1688 		VIsual_active = FALSE;
1689 #ifdef FEAT_MOUSE
1690 		setmouse();
1691 		mouse_dragging = 0;
1692 #endif
1693 		may_clear_cmdline();
1694 		if ((oap->op_type == OP_YANK
1695 			    || oap->op_type == OP_COLON
1696 			    || oap->op_type == OP_FUNCTION
1697 			    || oap->op_type == OP_FILTER)
1698 			&& oap->motion_force == NUL)
1699 		{
1700 #ifdef FEAT_LINEBREAK
1701 		    /* make sure redrawing is correct */
1702 		    curwin->w_p_lbr = lbr_saved;
1703 #endif
1704 		    redraw_curbuf_later(INVERTED);
1705 		}
1706 	    }
1707 	}
1708 
1709 	/* Include the trailing byte of a multi-byte char. */
1710 	if (has_mbyte && oap->inclusive)
1711 	{
1712 	    int		l;
1713 
1714 	    l = (*mb_ptr2len)(ml_get_pos(&oap->end));
1715 	    if (l > 1)
1716 		oap->end.col += l - 1;
1717 	}
1718 	curwin->w_set_curswant = TRUE;
1719 
1720 	/*
1721 	 * oap->empty is set when start and end are the same.  The inclusive
1722 	 * flag affects this too, unless yanking and the end is on a NUL.
1723 	 */
1724 	oap->empty = (oap->motion_type == MCHAR
1725 		    && (!oap->inclusive
1726 			|| (oap->op_type == OP_YANK
1727 			    && gchar_pos(&oap->end) == NUL))
1728 		    && EQUAL_POS(oap->start, oap->end)
1729 		    && !(virtual_op && oap->start.coladd != oap->end.coladd));
1730 	/*
1731 	 * For delete, change and yank, it's an error to operate on an
1732 	 * empty region, when 'E' included in 'cpoptions' (Vi compatible).
1733 	 */
1734 	empty_region_error = (oap->empty
1735 				&& vim_strchr(p_cpo, CPO_EMPTYREGION) != NULL);
1736 
1737 	/* Force a redraw when operating on an empty Visual region, when
1738 	 * 'modifiable is off or creating a fold. */
1739 	if (oap->is_VIsual && (oap->empty || !curbuf->b_p_ma
1740 #ifdef FEAT_FOLDING
1741 		    || oap->op_type == OP_FOLD
1742 #endif
1743 		    ))
1744 	{
1745 #ifdef FEAT_LINEBREAK
1746 	    curwin->w_p_lbr = lbr_saved;
1747 #endif
1748 	    redraw_curbuf_later(INVERTED);
1749 	}
1750 
1751 	/*
1752 	 * If the end of an operator is in column one while oap->motion_type
1753 	 * is MCHAR and oap->inclusive is FALSE, we put op_end after the last
1754 	 * character in the previous line. If op_start is on or before the
1755 	 * first non-blank in the line, the operator becomes linewise
1756 	 * (strange, but that's the way vi does it).
1757 	 */
1758 	if (	   oap->motion_type == MCHAR
1759 		&& oap->inclusive == FALSE
1760 		&& !(cap->retval & CA_NO_ADJ_OP_END)
1761 		&& oap->end.col == 0
1762 		&& (!oap->is_VIsual || *p_sel == 'o')
1763 		&& !oap->block_mode
1764 		&& oap->line_count > 1)
1765 	{
1766 	    oap->end_adjusted = TRUE;	    /* remember that we did this */
1767 	    --oap->line_count;
1768 	    --oap->end.lnum;
1769 	    if (inindent(0))
1770 		oap->motion_type = MLINE;
1771 	    else
1772 	    {
1773 		oap->end.col = (colnr_T)STRLEN(ml_get(oap->end.lnum));
1774 		if (oap->end.col)
1775 		{
1776 		    --oap->end.col;
1777 		    oap->inclusive = TRUE;
1778 		}
1779 	    }
1780 	}
1781 	else
1782 	    oap->end_adjusted = FALSE;
1783 
1784 	switch (oap->op_type)
1785 	{
1786 	case OP_LSHIFT:
1787 	case OP_RSHIFT:
1788 	    op_shift(oap, TRUE, oap->is_VIsual ? (int)cap->count1 : 1);
1789 	    auto_format(FALSE, TRUE);
1790 	    break;
1791 
1792 	case OP_JOIN_NS:
1793 	case OP_JOIN:
1794 	    if (oap->line_count < 2)
1795 		oap->line_count = 2;
1796 	    if (curwin->w_cursor.lnum + oap->line_count - 1 >
1797 						   curbuf->b_ml.ml_line_count)
1798 		beep_flush();
1799 	    else
1800 	    {
1801 		(void)do_join(oap->line_count, oap->op_type == OP_JOIN,
1802 							    TRUE, TRUE, TRUE);
1803 		auto_format(FALSE, TRUE);
1804 	    }
1805 	    break;
1806 
1807 	case OP_DELETE:
1808 	    VIsual_reselect = FALSE;	    /* don't reselect now */
1809 	    if (empty_region_error)
1810 	    {
1811 		vim_beep(BO_OPER);
1812 		CancelRedo();
1813 	    }
1814 	    else
1815 	    {
1816 		(void)op_delete(oap);
1817 		if (oap->motion_type == MLINE && has_format_option(FO_AUTO))
1818 		    u_save_cursor();	    /* cursor line wasn't saved yet */
1819 		auto_format(FALSE, TRUE);
1820 	    }
1821 	    break;
1822 
1823 	case OP_YANK:
1824 	    if (empty_region_error)
1825 	    {
1826 		if (!gui_yank)
1827 		{
1828 		    vim_beep(BO_OPER);
1829 		    CancelRedo();
1830 		}
1831 	    }
1832 	    else
1833 	    {
1834 #ifdef FEAT_LINEBREAK
1835 		curwin->w_p_lbr = lbr_saved;
1836 #endif
1837 		(void)op_yank(oap, FALSE, !gui_yank);
1838 	    }
1839 	    check_cursor_col();
1840 	    break;
1841 
1842 	case OP_CHANGE:
1843 	    VIsual_reselect = FALSE;	    /* don't reselect now */
1844 	    if (empty_region_error)
1845 	    {
1846 		vim_beep(BO_OPER);
1847 		CancelRedo();
1848 	    }
1849 	    else
1850 	    {
1851 		/* This is a new edit command, not a restart.  Need to
1852 		 * remember it to make 'insertmode' work with mappings for
1853 		 * Visual mode.  But do this only once and not when typed and
1854 		 * 'insertmode' isn't set. */
1855 		if (p_im || !KeyTyped)
1856 		    restart_edit_save = restart_edit;
1857 		else
1858 		    restart_edit_save = 0;
1859 		restart_edit = 0;
1860 #ifdef FEAT_LINEBREAK
1861 		/* Restore linebreak, so that when the user edits it looks as
1862 		 * before. */
1863 		if (curwin->w_p_lbr != lbr_saved)
1864 		{
1865 		    curwin->w_p_lbr = lbr_saved;
1866 		    get_op_vcol(oap, redo_VIsual_mode, FALSE);
1867 		}
1868 #endif
1869 		/* Reset finish_op now, don't want it set inside edit(). */
1870 		finish_op = FALSE;
1871 		if (op_change(oap))	/* will call edit() */
1872 		    cap->retval |= CA_COMMAND_BUSY;
1873 		if (restart_edit == 0)
1874 		    restart_edit = restart_edit_save;
1875 	    }
1876 	    break;
1877 
1878 	case OP_FILTER:
1879 	    if (vim_strchr(p_cpo, CPO_FILTER) != NULL)
1880 		AppendToRedobuff((char_u *)"!\r");  /* use any last used !cmd */
1881 	    else
1882 		bangredo = TRUE;    /* do_bang() will put cmd in redo buffer */
1883 	    /* FALLTHROUGH */
1884 
1885 	case OP_INDENT:
1886 	case OP_COLON:
1887 
1888 #if defined(FEAT_LISP) || defined(FEAT_CINDENT)
1889 	    /*
1890 	     * If 'equalprg' is empty, do the indenting internally.
1891 	     */
1892 	    if (oap->op_type == OP_INDENT && *get_equalprg() == NUL)
1893 	    {
1894 # ifdef FEAT_LISP
1895 		if (curbuf->b_p_lisp)
1896 		{
1897 		    op_reindent(oap, get_lisp_indent);
1898 		    break;
1899 		}
1900 # endif
1901 # ifdef FEAT_CINDENT
1902 		op_reindent(oap,
1903 #  ifdef FEAT_EVAL
1904 			*curbuf->b_p_inde != NUL ? get_expr_indent :
1905 #  endif
1906 			    get_c_indent);
1907 		break;
1908 # endif
1909 	    }
1910 #endif
1911 
1912 	    op_colon(oap);
1913 	    break;
1914 
1915 	case OP_TILDE:
1916 	case OP_UPPER:
1917 	case OP_LOWER:
1918 	case OP_ROT13:
1919 	    if (empty_region_error)
1920 	    {
1921 		vim_beep(BO_OPER);
1922 		CancelRedo();
1923 	    }
1924 	    else
1925 		op_tilde(oap);
1926 	    check_cursor_col();
1927 	    break;
1928 
1929 	case OP_FORMAT:
1930 #if defined(FEAT_EVAL)
1931 	    if (*curbuf->b_p_fex != NUL)
1932 		op_formatexpr(oap);	/* use expression */
1933 	    else
1934 #endif
1935 		if (*p_fp != NUL || *curbuf->b_p_fp != NUL)
1936 		op_colon(oap);		/* use external command */
1937 	    else
1938 		op_format(oap, FALSE);	/* use internal function */
1939 	    break;
1940 
1941 	case OP_FORMAT2:
1942 	    op_format(oap, TRUE);	/* use internal function */
1943 	    break;
1944 
1945 	case OP_FUNCTION:
1946 #ifdef FEAT_LINEBREAK
1947 	    /* Restore linebreak, so that when the user edits it looks as
1948 	     * before. */
1949 	    curwin->w_p_lbr = lbr_saved;
1950 #endif
1951 	    op_function(oap);		/* call 'operatorfunc' */
1952 	    break;
1953 
1954 	case OP_INSERT:
1955 	case OP_APPEND:
1956 	    VIsual_reselect = FALSE;	/* don't reselect now */
1957 	    if (empty_region_error)
1958 	    {
1959 		vim_beep(BO_OPER);
1960 		CancelRedo();
1961 	    }
1962 	    else
1963 	    {
1964 		/* This is a new edit command, not a restart.  Need to
1965 		 * remember it to make 'insertmode' work with mappings for
1966 		 * Visual mode.  But do this only once. */
1967 		restart_edit_save = restart_edit;
1968 		restart_edit = 0;
1969 #ifdef FEAT_LINEBREAK
1970 		/* Restore linebreak, so that when the user edits it looks as
1971 		 * before. */
1972 		if (curwin->w_p_lbr != lbr_saved)
1973 		{
1974 		    curwin->w_p_lbr = lbr_saved;
1975 		    get_op_vcol(oap, redo_VIsual_mode, FALSE);
1976 		}
1977 #endif
1978 		op_insert(oap, cap->count1);
1979 #ifdef FEAT_LINEBREAK
1980 		/* Reset linebreak, so that formatting works correctly. */
1981 		curwin->w_p_lbr = FALSE;
1982 #endif
1983 
1984 		/* TODO: when inserting in several lines, should format all
1985 		 * the lines. */
1986 		auto_format(FALSE, TRUE);
1987 
1988 		if (restart_edit == 0)
1989 		    restart_edit = restart_edit_save;
1990 		else
1991 		    cap->retval |= CA_COMMAND_BUSY;
1992 	    }
1993 	    break;
1994 
1995 	case OP_REPLACE:
1996 	    VIsual_reselect = FALSE;	/* don't reselect now */
1997 	    if (empty_region_error)
1998 	    {
1999 		vim_beep(BO_OPER);
2000 		CancelRedo();
2001 	    }
2002 	    else
2003 	    {
2004 #ifdef FEAT_LINEBREAK
2005 		/* Restore linebreak, so that when the user edits it looks as
2006 		 * before. */
2007 		if (curwin->w_p_lbr != lbr_saved)
2008 		{
2009 		    curwin->w_p_lbr = lbr_saved;
2010 		    get_op_vcol(oap, redo_VIsual_mode, FALSE);
2011 		}
2012 #endif
2013 		op_replace(oap, cap->nchar);
2014 	    }
2015 	    break;
2016 
2017 #ifdef FEAT_FOLDING
2018 	case OP_FOLD:
2019 	    VIsual_reselect = FALSE;	/* don't reselect now */
2020 	    foldCreate(oap->start.lnum, oap->end.lnum);
2021 	    break;
2022 
2023 	case OP_FOLDOPEN:
2024 	case OP_FOLDOPENREC:
2025 	case OP_FOLDCLOSE:
2026 	case OP_FOLDCLOSEREC:
2027 	    VIsual_reselect = FALSE;	/* don't reselect now */
2028 	    opFoldRange(oap->start.lnum, oap->end.lnum,
2029 		    oap->op_type == OP_FOLDOPEN
2030 					    || oap->op_type == OP_FOLDOPENREC,
2031 		    oap->op_type == OP_FOLDOPENREC
2032 					  || oap->op_type == OP_FOLDCLOSEREC,
2033 					  oap->is_VIsual);
2034 	    break;
2035 
2036 	case OP_FOLDDEL:
2037 	case OP_FOLDDELREC:
2038 	    VIsual_reselect = FALSE;	/* don't reselect now */
2039 	    deleteFold(oap->start.lnum, oap->end.lnum,
2040 			       oap->op_type == OP_FOLDDELREC, oap->is_VIsual);
2041 	    break;
2042 #endif
2043 	case OP_NR_ADD:
2044 	case OP_NR_SUB:
2045 	    if (empty_region_error)
2046 	    {
2047 		vim_beep(BO_OPER);
2048 		CancelRedo();
2049 	    }
2050 	    else
2051 	    {
2052 		VIsual_active = TRUE;
2053 #ifdef FEAT_LINEBREAK
2054 		curwin->w_p_lbr = lbr_saved;
2055 #endif
2056 		op_addsub(oap, cap->count1, redo_VIsual_arg);
2057 		VIsual_active = FALSE;
2058 	    }
2059 	    check_cursor_col();
2060 	    break;
2061 	default:
2062 	    clearopbeep(oap);
2063 	}
2064 	virtual_op = MAYBE;
2065 	if (!gui_yank)
2066 	{
2067 	    /*
2068 	     * if 'sol' not set, go back to old column for some commands
2069 	     */
2070 	    if (!p_sol && oap->motion_type == MLINE && !oap->end_adjusted
2071 		    && (oap->op_type == OP_LSHIFT || oap->op_type == OP_RSHIFT
2072 						|| oap->op_type == OP_DELETE))
2073 	    {
2074 #ifdef FEAT_LINEBREAK
2075 		curwin->w_p_lbr = FALSE;
2076 #endif
2077 		coladvance(curwin->w_curswant = old_col);
2078 	    }
2079 	}
2080 	else
2081 	{
2082 	    curwin->w_cursor = old_cursor;
2083 	}
2084 	oap->block_mode = FALSE;
2085 	clearop(oap);
2086 	motion_force = NUL;
2087     }
2088 #ifdef FEAT_LINEBREAK
2089     curwin->w_p_lbr = lbr_saved;
2090 #endif
2091 }
2092 
2093 /*
2094  * Handle indent and format operators and visual mode ":".
2095  */
2096     static void
2097 op_colon(oparg_T *oap)
2098 {
2099     stuffcharReadbuff(':');
2100     if (oap->is_VIsual)
2101 	stuffReadbuff((char_u *)"'<,'>");
2102     else
2103     {
2104 	/*
2105 	 * Make the range look nice, so it can be repeated.
2106 	 */
2107 	if (oap->start.lnum == curwin->w_cursor.lnum)
2108 	    stuffcharReadbuff('.');
2109 	else
2110 	    stuffnumReadbuff((long)oap->start.lnum);
2111 	if (oap->end.lnum != oap->start.lnum)
2112 	{
2113 	    stuffcharReadbuff(',');
2114 	    if (oap->end.lnum == curwin->w_cursor.lnum)
2115 		stuffcharReadbuff('.');
2116 	    else if (oap->end.lnum == curbuf->b_ml.ml_line_count)
2117 		stuffcharReadbuff('$');
2118 	    else if (oap->start.lnum == curwin->w_cursor.lnum)
2119 	    {
2120 		stuffReadbuff((char_u *)".+");
2121 		stuffnumReadbuff((long)oap->line_count - 1);
2122 	    }
2123 	    else
2124 		stuffnumReadbuff((long)oap->end.lnum);
2125 	}
2126     }
2127     if (oap->op_type != OP_COLON)
2128 	stuffReadbuff((char_u *)"!");
2129     if (oap->op_type == OP_INDENT)
2130     {
2131 #ifndef FEAT_CINDENT
2132 	if (*get_equalprg() == NUL)
2133 	    stuffReadbuff((char_u *)"indent");
2134 	else
2135 #endif
2136 	    stuffReadbuff(get_equalprg());
2137 	stuffReadbuff((char_u *)"\n");
2138     }
2139     else if (oap->op_type == OP_FORMAT)
2140     {
2141 	if (*curbuf->b_p_fp != NUL)
2142 	    stuffReadbuff(curbuf->b_p_fp);
2143 	else if (*p_fp != NUL)
2144 	    stuffReadbuff(p_fp);
2145 	else
2146 	    stuffReadbuff((char_u *)"fmt");
2147 	stuffReadbuff((char_u *)"\n']");
2148     }
2149 
2150     /*
2151      * do_cmdline() does the rest
2152      */
2153 }
2154 
2155 /*
2156  * Handle the "g@" operator: call 'operatorfunc'.
2157  */
2158     static void
2159 op_function(oparg_T *oap UNUSED)
2160 {
2161 #ifdef FEAT_EVAL
2162     typval_T	argv[2];
2163     int		save_virtual_op = virtual_op;
2164 
2165     if (*p_opfunc == NUL)
2166 	emsg(_("E774: 'operatorfunc' is empty"));
2167     else
2168     {
2169 	/* Set '[ and '] marks to text to be operated on. */
2170 	curbuf->b_op_start = oap->start;
2171 	curbuf->b_op_end = oap->end;
2172 	if (oap->motion_type != MLINE && !oap->inclusive)
2173 	    /* Exclude the end position. */
2174 	    decl(&curbuf->b_op_end);
2175 
2176 	argv[0].v_type = VAR_STRING;
2177 	if (oap->block_mode)
2178 	    argv[0].vval.v_string = (char_u *)"block";
2179 	else if (oap->motion_type == MLINE)
2180 	    argv[0].vval.v_string = (char_u *)"line";
2181 	else
2182 	    argv[0].vval.v_string = (char_u *)"char";
2183 	argv[1].v_type = VAR_UNKNOWN;
2184 
2185 	/* Reset virtual_op so that 'virtualedit' can be changed in the
2186 	 * function. */
2187 	virtual_op = MAYBE;
2188 
2189 	(void)call_func_retnr(p_opfunc, 1, argv);
2190 
2191 	virtual_op = save_virtual_op;
2192     }
2193 #else
2194     emsg(_("E775: Eval feature not available"));
2195 #endif
2196 }
2197 
2198 #if defined(FEAT_MOUSE) || defined(PROTO)
2199 /*
2200  * Do the appropriate action for the current mouse click in the current mode.
2201  * Not used for Command-line mode.
2202  *
2203  * Normal and Visual Mode:
2204  * event	 modi-	position      visual	   change   action
2205  *		 fier	cursor			   window
2206  * left press	  -	yes	    end		    yes
2207  * left press	  C	yes	    end		    yes	    "^]" (2)
2208  * left press	  S	yes	end (popup: extend) yes	    "*" (2)
2209  * left drag	  -	yes	start if moved	    no
2210  * left relse	  -	yes	start if moved	    no
2211  * middle press	  -	yes	 if not active	    no	    put register
2212  * middle press	  -	yes	 if active	    no	    yank and put
2213  * right press	  -	yes	start or extend	    yes
2214  * right press	  S	yes	no change	    yes	    "#" (2)
2215  * right drag	  -	yes	extend		    no
2216  * right relse	  -	yes	extend		    no
2217  *
2218  * Insert or Replace Mode:
2219  * event	 modi-	position      visual	   change   action
2220  *		 fier	cursor			   window
2221  * left press	  -	yes	(cannot be active)  yes
2222  * left press	  C	yes	(cannot be active)  yes	    "CTRL-O^]" (2)
2223  * left press	  S	yes	(cannot be active)  yes	    "CTRL-O*" (2)
2224  * left drag	  -	yes	start or extend (1) no	    CTRL-O (1)
2225  * left relse	  -	yes	start or extend (1) no	    CTRL-O (1)
2226  * middle press	  -	no	(cannot be active)  no	    put register
2227  * right press	  -	yes	start or extend	    yes	    CTRL-O
2228  * right press	  S	yes	(cannot be active)  yes	    "CTRL-O#" (2)
2229  *
2230  * (1) only if mouse pointer moved since press
2231  * (2) only if click is in same buffer
2232  *
2233  * Return TRUE if start_arrow() should be called for edit mode.
2234  */
2235     int
2236 do_mouse(
2237     oparg_T	*oap,		/* operator argument, can be NULL */
2238     int		c,		/* K_LEFTMOUSE, etc */
2239     int		dir,		/* Direction to 'put' if necessary */
2240     long	count,
2241     int		fixindent)	/* PUT_FIXINDENT if fixing indent necessary */
2242 {
2243     static int	do_always = FALSE;	/* ignore 'mouse' setting next time */
2244     static int	got_click = FALSE;	/* got a click some time back */
2245 
2246     int		which_button;	/* MOUSE_LEFT, _MIDDLE or _RIGHT */
2247     int		is_click;	/* If FALSE it's a drag or release event */
2248     int		is_drag;	/* If TRUE it's a drag event */
2249     int		jump_flags = 0;	/* flags for jump_to_mouse() */
2250     pos_T	start_visual;
2251     int		moved;		/* Has cursor moved? */
2252     int		in_status_line;	/* mouse in status line */
2253     static int	in_tab_line = FALSE; /* mouse clicked in tab line */
2254     int		in_sep_line;	/* mouse in vertical separator line */
2255     int		c1, c2;
2256 #if defined(FEAT_FOLDING)
2257     pos_T	save_cursor;
2258 #endif
2259     win_T	*old_curwin = curwin;
2260     static pos_T orig_cursor;
2261     colnr_T	leftcol, rightcol;
2262     pos_T	end_visual;
2263     int		diff;
2264     int		old_active = VIsual_active;
2265     int		old_mode = VIsual_mode;
2266     int		regname;
2267 
2268 #if defined(FEAT_FOLDING)
2269     save_cursor = curwin->w_cursor;
2270 #endif
2271 
2272     /*
2273      * When GUI is active, always recognize mouse events, otherwise:
2274      * - Ignore mouse event in normal mode if 'mouse' doesn't include 'n'.
2275      * - Ignore mouse event in visual mode if 'mouse' doesn't include 'v'.
2276      * - For command line and insert mode 'mouse' is checked before calling
2277      *	 do_mouse().
2278      */
2279     if (do_always)
2280 	do_always = FALSE;
2281     else
2282 #ifdef FEAT_GUI
2283 	if (!gui.in_use)
2284 #endif
2285 	{
2286 	    if (VIsual_active)
2287 	    {
2288 		if (!mouse_has(MOUSE_VISUAL))
2289 		    return FALSE;
2290 	    }
2291 	    else if (State == NORMAL && !mouse_has(MOUSE_NORMAL))
2292 		return FALSE;
2293 	}
2294 
2295     for (;;)
2296     {
2297 	which_button = get_mouse_button(KEY2TERMCAP1(c), &is_click, &is_drag);
2298 	if (is_drag)
2299 	{
2300 	    /* If the next character is the same mouse event then use that
2301 	     * one. Speeds up dragging the status line. */
2302 	    if (vpeekc() != NUL)
2303 	    {
2304 		int nc;
2305 		int save_mouse_row = mouse_row;
2306 		int save_mouse_col = mouse_col;
2307 
2308 		/* Need to get the character, peeking doesn't get the actual
2309 		 * one. */
2310 		nc = safe_vgetc();
2311 		if (c == nc)
2312 		    continue;
2313 		vungetc(nc);
2314 		mouse_row = save_mouse_row;
2315 		mouse_col = save_mouse_col;
2316 	    }
2317 	}
2318 	break;
2319     }
2320 
2321     if (c == K_MOUSEMOVE)
2322     {
2323 	// Mouse moved without a button pressed.
2324 #ifdef FEAT_BEVAL_TERM
2325 	ui_may_remove_balloon();
2326 	if (p_bevalterm)
2327 	{
2328 	    profile_setlimit(p_bdlay, &bevalexpr_due);
2329 	    bevalexpr_due_set = TRUE;
2330 	}
2331 #endif
2332 #ifdef FEAT_TEXT_PROP
2333 	popup_handle_mouse_moved();
2334 #endif
2335 	return FALSE;
2336     }
2337 
2338 #ifdef FEAT_MOUSESHAPE
2339     /* May have stopped dragging the status or separator line.  The pointer is
2340      * most likely still on the status or separator line. */
2341     if (!is_drag && drag_status_line)
2342     {
2343 	drag_status_line = FALSE;
2344 	update_mouseshape(SHAPE_IDX_STATUS);
2345     }
2346     if (!is_drag && drag_sep_line)
2347     {
2348 	drag_sep_line = FALSE;
2349 	update_mouseshape(SHAPE_IDX_VSEP);
2350     }
2351 #endif
2352 
2353     /*
2354      * Ignore drag and release events if we didn't get a click.
2355      */
2356     if (is_click)
2357 	got_click = TRUE;
2358     else
2359     {
2360 	if (!got_click)			/* didn't get click, ignore */
2361 	    return FALSE;
2362 	if (!is_drag)			/* release, reset got_click */
2363 	{
2364 	    got_click = FALSE;
2365 	    if (in_tab_line)
2366 	    {
2367 		in_tab_line = FALSE;
2368 		return FALSE;
2369 	    }
2370 	}
2371     }
2372 
2373     /*
2374      * CTRL right mouse button does CTRL-T
2375      */
2376     if (is_click && (mod_mask & MOD_MASK_CTRL) && which_button == MOUSE_RIGHT)
2377     {
2378 	if (State & INSERT)
2379 	    stuffcharReadbuff(Ctrl_O);
2380 	if (count > 1)
2381 	    stuffnumReadbuff(count);
2382 	stuffcharReadbuff(Ctrl_T);
2383 	got_click = FALSE;		/* ignore drag&release now */
2384 	return FALSE;
2385     }
2386 
2387     /*
2388      * CTRL only works with left mouse button
2389      */
2390     if ((mod_mask & MOD_MASK_CTRL) && which_button != MOUSE_LEFT)
2391 	return FALSE;
2392 
2393     /*
2394      * When a modifier is down, ignore drag and release events, as well as
2395      * multiple clicks and the middle mouse button.
2396      * Accept shift-leftmouse drags when 'mousemodel' is "popup.*".
2397      */
2398     if ((mod_mask & (MOD_MASK_SHIFT | MOD_MASK_CTRL | MOD_MASK_ALT
2399 							     | MOD_MASK_META))
2400 	    && (!is_click
2401 		|| (mod_mask & MOD_MASK_MULTI_CLICK)
2402 		|| which_button == MOUSE_MIDDLE)
2403 	    && !((mod_mask & (MOD_MASK_SHIFT|MOD_MASK_ALT))
2404 		&& mouse_model_popup()
2405 		&& which_button == MOUSE_LEFT)
2406 	    && !((mod_mask & MOD_MASK_ALT)
2407 		&& !mouse_model_popup()
2408 		&& which_button == MOUSE_RIGHT)
2409 	    )
2410 	return FALSE;
2411 
2412     /*
2413      * If the button press was used as the movement command for an operator
2414      * (eg "d<MOUSE>"), or it is the middle button that is held down, ignore
2415      * drag/release events.
2416      */
2417     if (!is_click && which_button == MOUSE_MIDDLE)
2418 	return FALSE;
2419 
2420     if (oap != NULL)
2421 	regname = oap->regname;
2422     else
2423 	regname = 0;
2424 
2425     /*
2426      * Middle mouse button does a 'put' of the selected text
2427      */
2428     if (which_button == MOUSE_MIDDLE)
2429     {
2430 	if (State == NORMAL)
2431 	{
2432 	    /*
2433 	     * If an operator was pending, we don't know what the user wanted
2434 	     * to do. Go back to normal mode: Clear the operator and beep().
2435 	     */
2436 	    if (oap != NULL && oap->op_type != OP_NOP)
2437 	    {
2438 		clearopbeep(oap);
2439 		return FALSE;
2440 	    }
2441 
2442 	    /*
2443 	     * If visual was active, yank the highlighted text and put it
2444 	     * before the mouse pointer position.
2445 	     * In Select mode replace the highlighted text with the clipboard.
2446 	     */
2447 	    if (VIsual_active)
2448 	    {
2449 		if (VIsual_select)
2450 		{
2451 		    stuffcharReadbuff(Ctrl_G);
2452 		    stuffReadbuff((char_u *)"\"+p");
2453 		}
2454 		else
2455 		{
2456 		    stuffcharReadbuff('y');
2457 		    stuffcharReadbuff(K_MIDDLEMOUSE);
2458 		}
2459 		do_always = TRUE;	/* ignore 'mouse' setting next time */
2460 		return FALSE;
2461 	    }
2462 	    /*
2463 	     * The rest is below jump_to_mouse()
2464 	     */
2465 	}
2466 
2467 	else if ((State & INSERT) == 0)
2468 	    return FALSE;
2469 
2470 	/*
2471 	 * Middle click in insert mode doesn't move the mouse, just insert the
2472 	 * contents of a register.  '.' register is special, can't insert that
2473 	 * with do_put().
2474 	 * Also paste at the cursor if the current mode isn't in 'mouse' (only
2475 	 * happens for the GUI).
2476 	 */
2477 	if ((State & INSERT) || !mouse_has(MOUSE_NORMAL))
2478 	{
2479 	    if (regname == '.')
2480 		insert_reg(regname, TRUE);
2481 	    else
2482 	    {
2483 #ifdef FEAT_CLIPBOARD
2484 		if (clip_star.available && regname == 0)
2485 		    regname = '*';
2486 #endif
2487 		if ((State & REPLACE_FLAG) && !yank_register_mline(regname))
2488 		    insert_reg(regname, TRUE);
2489 		else
2490 		{
2491 		    do_put(regname, BACKWARD, 1L, fixindent | PUT_CURSEND);
2492 
2493 		    /* Repeat it with CTRL-R CTRL-O r or CTRL-R CTRL-P r */
2494 		    AppendCharToRedobuff(Ctrl_R);
2495 		    AppendCharToRedobuff(fixindent ? Ctrl_P : Ctrl_O);
2496 		    AppendCharToRedobuff(regname == 0 ? '"' : regname);
2497 		}
2498 	    }
2499 	    return FALSE;
2500 	}
2501     }
2502 
2503     /* When dragging or button-up stay in the same window. */
2504     if (!is_click)
2505 	jump_flags |= MOUSE_FOCUS | MOUSE_DID_MOVE;
2506 
2507     start_visual.lnum = 0;
2508 
2509     /* Check for clicking in the tab page line. */
2510     if (mouse_row == 0 && firstwin->w_winrow > 0)
2511     {
2512 	if (is_drag)
2513 	{
2514 	    if (in_tab_line)
2515 	    {
2516 		c1 = TabPageIdxs[mouse_col];
2517 		tabpage_move(c1 <= 0 ? 9999 : c1 < tabpage_index(curtab)
2518 								? c1 - 1 : c1);
2519 	    }
2520 	    return FALSE;
2521 	}
2522 
2523 	/* click in a tab selects that tab page */
2524 	if (is_click
2525 # ifdef FEAT_CMDWIN
2526 		&& cmdwin_type == 0
2527 # endif
2528 		&& mouse_col < Columns)
2529 	{
2530 	    in_tab_line = TRUE;
2531 	    c1 = TabPageIdxs[mouse_col];
2532 	    if (c1 >= 0)
2533 	    {
2534 		if ((mod_mask & MOD_MASK_MULTI_CLICK) == MOD_MASK_2CLICK)
2535 		{
2536 		    /* double click opens new page */
2537 		    end_visual_mode();
2538 		    tabpage_new();
2539 		    tabpage_move(c1 == 0 ? 9999 : c1 - 1);
2540 		}
2541 		else
2542 		{
2543 		    /* Go to specified tab page, or next one if not clicking
2544 		     * on a label. */
2545 		    goto_tabpage(c1);
2546 
2547 		    /* It's like clicking on the status line of a window. */
2548 		    if (curwin != old_curwin)
2549 			end_visual_mode();
2550 		}
2551 	    }
2552 	    else
2553 	    {
2554 		tabpage_T	*tp;
2555 
2556 		/* Close the current or specified tab page. */
2557 		if (c1 == -999)
2558 		    tp = curtab;
2559 		else
2560 		    tp = find_tabpage(-c1);
2561 		if (tp == curtab)
2562 		{
2563 		    if (first_tabpage->tp_next != NULL)
2564 			tabpage_close(FALSE);
2565 		}
2566 		else if (tp != NULL)
2567 		    tabpage_close_other(tp, FALSE);
2568 	    }
2569 	}
2570 	return TRUE;
2571     }
2572     else if (is_drag && in_tab_line)
2573     {
2574 	c1 = TabPageIdxs[mouse_col];
2575 	tabpage_move(c1 <= 0 ? 9999 : c1 - 1);
2576 	return FALSE;
2577     }
2578 
2579     /*
2580      * When 'mousemodel' is "popup" or "popup_setpos", translate mouse events:
2581      * right button up   -> pop-up menu
2582      * shift-left button -> right button
2583      * alt-left button   -> alt-right button
2584      */
2585     if (mouse_model_popup())
2586     {
2587 	if (which_button == MOUSE_RIGHT
2588 			    && !(mod_mask & (MOD_MASK_SHIFT | MOD_MASK_CTRL)))
2589 	{
2590 #if defined(FEAT_GUI_MOTIF) || defined(FEAT_GUI_GTK) \
2591 	    || defined(FEAT_GUI_ATHENA) || defined(FEAT_GUI_MSWIN) \
2592 	    || defined(FEAT_GUI_MAC) || defined(FEAT_GUI_PHOTON) \
2593 	    || defined(FEAT_TERM_POPUP_MENU)
2594 # ifdef FEAT_GUI
2595 	    if (gui.in_use)
2596 	    {
2597 #  if defined(FEAT_GUI_MOTIF) || defined(FEAT_GUI_GTK) \
2598 			  || defined(FEAT_GUI_PHOTON) || defined(FEAT_GUI_MAC)
2599 		if (!is_click)
2600 		    /* Ignore right button release events, only shows the popup
2601 		     * menu on the button down event. */
2602 		    return FALSE;
2603 #  endif
2604 #  if defined(FEAT_GUI_ATHENA) || defined(FEAT_GUI_MSWIN)
2605 		if (is_click || is_drag)
2606 		    /* Ignore right button down and drag mouse events.  Windows
2607 		     * only shows the popup menu on the button up event. */
2608 		    return FALSE;
2609 #  endif
2610 	    }
2611 # endif
2612 # if defined(FEAT_GUI) && defined(FEAT_TERM_POPUP_MENU)
2613 	    else
2614 # endif
2615 # if defined(FEAT_TERM_POPUP_MENU)
2616 	    if (!is_click)
2617 		/* Ignore right button release events, only shows the popup
2618 		 * menu on the button down event. */
2619 		return FALSE;
2620 #endif
2621 
2622 	    jump_flags = 0;
2623 	    if (STRCMP(p_mousem, "popup_setpos") == 0)
2624 	    {
2625 		/* First set the cursor position before showing the popup
2626 		 * menu. */
2627 		if (VIsual_active)
2628 		{
2629 		    pos_T    m_pos;
2630 
2631 		    /*
2632 		     * set MOUSE_MAY_STOP_VIS if we are outside the
2633 		     * selection or the current window (might have false
2634 		     * negative here)
2635 		     */
2636 		    if (mouse_row < curwin->w_winrow
2637 			 || mouse_row
2638 				  > (curwin->w_winrow + curwin->w_height))
2639 			jump_flags = MOUSE_MAY_STOP_VIS;
2640 		    else if (get_fpos_of_mouse(&m_pos) != IN_BUFFER)
2641 			jump_flags = MOUSE_MAY_STOP_VIS;
2642 		    else
2643 		    {
2644 			if ((LT_POS(curwin->w_cursor, VIsual)
2645 				    && (LT_POS(m_pos, curwin->w_cursor)
2646 					|| LT_POS(VIsual, m_pos)))
2647 				|| (LT_POS(VIsual, curwin->w_cursor)
2648 				    && (LT_POS(m_pos, VIsual)
2649 				      || LT_POS(curwin->w_cursor, m_pos))))
2650 			{
2651 			    jump_flags = MOUSE_MAY_STOP_VIS;
2652 			}
2653 			else if (VIsual_mode == Ctrl_V)
2654 			{
2655 			    getvcols(curwin, &curwin->w_cursor, &VIsual,
2656 						     &leftcol, &rightcol);
2657 			    getvcol(curwin, &m_pos, NULL, &m_pos.col, NULL);
2658 			    if (m_pos.col < leftcol || m_pos.col > rightcol)
2659 				jump_flags = MOUSE_MAY_STOP_VIS;
2660 			}
2661 		    }
2662 		}
2663 		else
2664 		    jump_flags = MOUSE_MAY_STOP_VIS;
2665 	    }
2666 	    if (jump_flags)
2667 	    {
2668 		jump_flags = jump_to_mouse(jump_flags, NULL, which_button);
2669 		update_curbuf(VIsual_active ? INVERTED : VALID);
2670 		setcursor();
2671 		out_flush();    /* Update before showing popup menu */
2672 	    }
2673 # ifdef FEAT_MENU
2674 	    show_popupmenu();
2675 	    got_click = FALSE;	/* ignore release events */
2676 # endif
2677 	    return (jump_flags & CURSOR_MOVED) != 0;
2678 #else
2679 	    return FALSE;
2680 #endif
2681 	}
2682 	if (which_button == MOUSE_LEFT
2683 				&& (mod_mask & (MOD_MASK_SHIFT|MOD_MASK_ALT)))
2684 	{
2685 	    which_button = MOUSE_RIGHT;
2686 	    mod_mask &= ~MOD_MASK_SHIFT;
2687 	}
2688     }
2689 
2690     if ((State & (NORMAL | INSERT))
2691 			    && !(mod_mask & (MOD_MASK_SHIFT | MOD_MASK_CTRL)))
2692     {
2693 	if (which_button == MOUSE_LEFT)
2694 	{
2695 	    if (is_click)
2696 	    {
2697 		/* stop Visual mode for a left click in a window, but not when
2698 		 * on a status line */
2699 		if (VIsual_active)
2700 		    jump_flags |= MOUSE_MAY_STOP_VIS;
2701 	    }
2702 	    else if (mouse_has(MOUSE_VISUAL))
2703 		jump_flags |= MOUSE_MAY_VIS;
2704 	}
2705 	else if (which_button == MOUSE_RIGHT)
2706 	{
2707 	    if (is_click && VIsual_active)
2708 	    {
2709 		/*
2710 		 * Remember the start and end of visual before moving the
2711 		 * cursor.
2712 		 */
2713 		if (LT_POS(curwin->w_cursor, VIsual))
2714 		{
2715 		    start_visual = curwin->w_cursor;
2716 		    end_visual = VIsual;
2717 		}
2718 		else
2719 		{
2720 		    start_visual = VIsual;
2721 		    end_visual = curwin->w_cursor;
2722 		}
2723 	    }
2724 	    jump_flags |= MOUSE_FOCUS;
2725 	    if (mouse_has(MOUSE_VISUAL))
2726 		jump_flags |= MOUSE_MAY_VIS;
2727 	}
2728     }
2729 
2730     /*
2731      * If an operator is pending, ignore all drags and releases until the
2732      * next mouse click.
2733      */
2734     if (!is_drag && oap != NULL && oap->op_type != OP_NOP)
2735     {
2736 	got_click = FALSE;
2737 	oap->motion_type = MCHAR;
2738     }
2739 
2740     /* When releasing the button let jump_to_mouse() know. */
2741     if (!is_click && !is_drag)
2742 	jump_flags |= MOUSE_RELEASED;
2743 
2744     /*
2745      * JUMP!
2746      */
2747     jump_flags = jump_to_mouse(jump_flags,
2748 			oap == NULL ? NULL : &(oap->inclusive), which_button);
2749 
2750 #ifdef FEAT_MENU
2751     /* A click in the window toolbar has no side effects. */
2752     if (jump_flags & MOUSE_WINBAR)
2753 	return FALSE;
2754 #endif
2755     moved = (jump_flags & CURSOR_MOVED);
2756     in_status_line = (jump_flags & IN_STATUS_LINE);
2757     in_sep_line = (jump_flags & IN_SEP_LINE);
2758 
2759 #ifdef FEAT_NETBEANS_INTG
2760     if (isNetbeansBuffer(curbuf)
2761 			    && !(jump_flags & (IN_STATUS_LINE | IN_SEP_LINE)))
2762     {
2763 	int key = KEY2TERMCAP1(c);
2764 
2765 	if (key == (int)KE_LEFTRELEASE || key == (int)KE_MIDDLERELEASE
2766 					       || key == (int)KE_RIGHTRELEASE)
2767 	    netbeans_button_release(which_button);
2768     }
2769 #endif
2770 
2771     /* When jumping to another window, clear a pending operator.  That's a bit
2772      * friendlier than beeping and not jumping to that window. */
2773     if (curwin != old_curwin && oap != NULL && oap->op_type != OP_NOP)
2774 	clearop(oap);
2775 
2776 #ifdef FEAT_FOLDING
2777     if (mod_mask == 0
2778 	    && !is_drag
2779 	    && (jump_flags & (MOUSE_FOLD_CLOSE | MOUSE_FOLD_OPEN))
2780 	    && which_button == MOUSE_LEFT)
2781     {
2782 	/* open or close a fold at this line */
2783 	if (jump_flags & MOUSE_FOLD_OPEN)
2784 	    openFold(curwin->w_cursor.lnum, 1L);
2785 	else
2786 	    closeFold(curwin->w_cursor.lnum, 1L);
2787 	/* don't move the cursor if still in the same window */
2788 	if (curwin == old_curwin)
2789 	    curwin->w_cursor = save_cursor;
2790     }
2791 #endif
2792 
2793 #if defined(FEAT_CLIPBOARD) && defined(FEAT_CMDWIN)
2794     if ((jump_flags & IN_OTHER_WIN) && !VIsual_active && clip_star.available)
2795     {
2796 	clip_modeless(which_button, is_click, is_drag);
2797 	return FALSE;
2798     }
2799 #endif
2800 
2801     /* Set global flag that we are extending the Visual area with mouse
2802      * dragging; temporarily minimize 'scrolloff'. */
2803     if (VIsual_active && is_drag && get_scrolloff_value())
2804     {
2805 	/* In the very first line, allow scrolling one line */
2806 	if (mouse_row == 0)
2807 	    mouse_dragging = 2;
2808 	else
2809 	    mouse_dragging = 1;
2810     }
2811 
2812     /* When dragging the mouse above the window, scroll down. */
2813     if (is_drag && mouse_row < 0 && !in_status_line)
2814     {
2815 	scroll_redraw(FALSE, 1L);
2816 	mouse_row = 0;
2817     }
2818 
2819     if (start_visual.lnum)		/* right click in visual mode */
2820     {
2821        /* When ALT is pressed make Visual mode blockwise. */
2822        if (mod_mask & MOD_MASK_ALT)
2823 	   VIsual_mode = Ctrl_V;
2824 
2825 	/*
2826 	 * In Visual-block mode, divide the area in four, pick up the corner
2827 	 * that is in the quarter that the cursor is in.
2828 	 */
2829 	if (VIsual_mode == Ctrl_V)
2830 	{
2831 	    getvcols(curwin, &start_visual, &end_visual, &leftcol, &rightcol);
2832 	    if (curwin->w_curswant > (leftcol + rightcol) / 2)
2833 		end_visual.col = leftcol;
2834 	    else
2835 		end_visual.col = rightcol;
2836 	    if (curwin->w_cursor.lnum >=
2837 				    (start_visual.lnum + end_visual.lnum) / 2)
2838 		end_visual.lnum = start_visual.lnum;
2839 
2840 	    /* move VIsual to the right column */
2841 	    start_visual = curwin->w_cursor;	    /* save the cursor pos */
2842 	    curwin->w_cursor = end_visual;
2843 	    coladvance(end_visual.col);
2844 	    VIsual = curwin->w_cursor;
2845 	    curwin->w_cursor = start_visual;	    /* restore the cursor */
2846 	}
2847 	else
2848 	{
2849 	    /*
2850 	     * If the click is before the start of visual, change the start.
2851 	     * If the click is after the end of visual, change the end.  If
2852 	     * the click is inside the visual, change the closest side.
2853 	     */
2854 	    if (LT_POS(curwin->w_cursor, start_visual))
2855 		VIsual = end_visual;
2856 	    else if (LT_POS(end_visual, curwin->w_cursor))
2857 		VIsual = start_visual;
2858 	    else
2859 	    {
2860 		/* In the same line, compare column number */
2861 		if (end_visual.lnum == start_visual.lnum)
2862 		{
2863 		    if (curwin->w_cursor.col - start_visual.col >
2864 				    end_visual.col - curwin->w_cursor.col)
2865 			VIsual = start_visual;
2866 		    else
2867 			VIsual = end_visual;
2868 		}
2869 
2870 		/* In different lines, compare line number */
2871 		else
2872 		{
2873 		    diff = (curwin->w_cursor.lnum - start_visual.lnum) -
2874 				(end_visual.lnum - curwin->w_cursor.lnum);
2875 
2876 		    if (diff > 0)		/* closest to end */
2877 			VIsual = start_visual;
2878 		    else if (diff < 0)	/* closest to start */
2879 			VIsual = end_visual;
2880 		    else			/* in the middle line */
2881 		    {
2882 			if (curwin->w_cursor.col <
2883 					(start_visual.col + end_visual.col) / 2)
2884 			    VIsual = end_visual;
2885 			else
2886 			    VIsual = start_visual;
2887 		    }
2888 		}
2889 	    }
2890 	}
2891     }
2892     /*
2893      * If Visual mode started in insert mode, execute "CTRL-O"
2894      */
2895     else if ((State & INSERT) && VIsual_active)
2896 	stuffcharReadbuff(Ctrl_O);
2897 
2898     /*
2899      * Middle mouse click: Put text before cursor.
2900      */
2901     if (which_button == MOUSE_MIDDLE)
2902     {
2903 #ifdef FEAT_CLIPBOARD
2904 	if (clip_star.available && regname == 0)
2905 	    regname = '*';
2906 #endif
2907 	if (yank_register_mline(regname))
2908 	{
2909 	    if (mouse_past_bottom)
2910 		dir = FORWARD;
2911 	}
2912 	else if (mouse_past_eol)
2913 	    dir = FORWARD;
2914 
2915 	if (fixindent)
2916 	{
2917 	    c1 = (dir == BACKWARD) ? '[' : ']';
2918 	    c2 = 'p';
2919 	}
2920 	else
2921 	{
2922 	    c1 = (dir == FORWARD) ? 'p' : 'P';
2923 	    c2 = NUL;
2924 	}
2925 	prep_redo(regname, count, NUL, c1, NUL, c2, NUL);
2926 
2927 	/*
2928 	 * Remember where the paste started, so in edit() Insstart can be set
2929 	 * to this position
2930 	 */
2931 	if (restart_edit != 0)
2932 	    where_paste_started = curwin->w_cursor;
2933 	do_put(regname, dir, count, fixindent | PUT_CURSEND);
2934     }
2935 
2936 #if defined(FEAT_QUICKFIX)
2937     /*
2938      * Ctrl-Mouse click or double click in a quickfix window jumps to the
2939      * error under the mouse pointer.
2940      */
2941     else if (((mod_mask & MOD_MASK_CTRL)
2942 		|| (mod_mask & MOD_MASK_MULTI_CLICK) == MOD_MASK_2CLICK)
2943 	    && bt_quickfix(curbuf))
2944     {
2945 	if (curwin->w_llist_ref == NULL)	/* quickfix window */
2946 	    do_cmdline_cmd((char_u *)".cc");
2947 	else					/* location list window */
2948 	    do_cmdline_cmd((char_u *)".ll");
2949 	got_click = FALSE;		/* ignore drag&release now */
2950     }
2951 #endif
2952 
2953     /*
2954      * Ctrl-Mouse click (or double click in a help window) jumps to the tag
2955      * under the mouse pointer.
2956      */
2957     else if ((mod_mask & MOD_MASK_CTRL) || (curbuf->b_help
2958 		     && (mod_mask & MOD_MASK_MULTI_CLICK) == MOD_MASK_2CLICK))
2959     {
2960 	if (State & INSERT)
2961 	    stuffcharReadbuff(Ctrl_O);
2962 	stuffcharReadbuff(Ctrl_RSB);
2963 	got_click = FALSE;		/* ignore drag&release now */
2964     }
2965 
2966     /*
2967      * Shift-Mouse click searches for the next occurrence of the word under
2968      * the mouse pointer
2969      */
2970     else if ((mod_mask & MOD_MASK_SHIFT))
2971     {
2972 	if ((State & INSERT) || (VIsual_active && VIsual_select))
2973 	    stuffcharReadbuff(Ctrl_O);
2974 	if (which_button == MOUSE_LEFT)
2975 	    stuffcharReadbuff('*');
2976 	else	/* MOUSE_RIGHT */
2977 	    stuffcharReadbuff('#');
2978     }
2979 
2980     /* Handle double clicks, unless on status line */
2981     else if (in_status_line)
2982     {
2983 #ifdef FEAT_MOUSESHAPE
2984 	if ((is_drag || is_click) && !drag_status_line)
2985 	{
2986 	    drag_status_line = TRUE;
2987 	    update_mouseshape(-1);
2988 	}
2989 #endif
2990     }
2991     else if (in_sep_line)
2992     {
2993 #ifdef FEAT_MOUSESHAPE
2994 	if ((is_drag || is_click) && !drag_sep_line)
2995 	{
2996 	    drag_sep_line = TRUE;
2997 	    update_mouseshape(-1);
2998 	}
2999 #endif
3000     }
3001     else if ((mod_mask & MOD_MASK_MULTI_CLICK) && (State & (NORMAL | INSERT))
3002 	     && mouse_has(MOUSE_VISUAL))
3003     {
3004 	if (is_click || !VIsual_active)
3005 	{
3006 	    if (VIsual_active)
3007 		orig_cursor = VIsual;
3008 	    else
3009 	    {
3010 		check_visual_highlight();
3011 		VIsual = curwin->w_cursor;
3012 		orig_cursor = VIsual;
3013 		VIsual_active = TRUE;
3014 		VIsual_reselect = TRUE;
3015 		/* start Select mode if 'selectmode' contains "mouse" */
3016 		may_start_select('o');
3017 		setmouse();
3018 	    }
3019 	    if ((mod_mask & MOD_MASK_MULTI_CLICK) == MOD_MASK_2CLICK)
3020 	    {
3021 		/* Double click with ALT pressed makes it blockwise. */
3022 		if (mod_mask & MOD_MASK_ALT)
3023 		    VIsual_mode = Ctrl_V;
3024 		else
3025 		    VIsual_mode = 'v';
3026 	    }
3027 	    else if ((mod_mask & MOD_MASK_MULTI_CLICK) == MOD_MASK_3CLICK)
3028 		VIsual_mode = 'V';
3029 	    else if ((mod_mask & MOD_MASK_MULTI_CLICK) == MOD_MASK_4CLICK)
3030 		VIsual_mode = Ctrl_V;
3031 #ifdef FEAT_CLIPBOARD
3032 	    /* Make sure the clipboard gets updated.  Needed because start and
3033 	     * end may still be the same, and the selection needs to be owned */
3034 	    clip_star.vmode = NUL;
3035 #endif
3036 	}
3037 	/*
3038 	 * A double click selects a word or a block.
3039 	 */
3040 	if ((mod_mask & MOD_MASK_MULTI_CLICK) == MOD_MASK_2CLICK)
3041 	{
3042 	    pos_T	*pos = NULL;
3043 	    int		gc;
3044 
3045 	    if (is_click)
3046 	    {
3047 		/* If the character under the cursor (skipping white space) is
3048 		 * not a word character, try finding a match and select a (),
3049 		 * {}, [], #if/#endif, etc. block. */
3050 		end_visual = curwin->w_cursor;
3051 		while (gc = gchar_pos(&end_visual), VIM_ISWHITE(gc))
3052 		    inc(&end_visual);
3053 		if (oap != NULL)
3054 		    oap->motion_type = MCHAR;
3055 		if (oap != NULL
3056 			&& VIsual_mode == 'v'
3057 			&& !vim_iswordc(gchar_pos(&end_visual))
3058 			&& EQUAL_POS(curwin->w_cursor, VIsual)
3059 			&& (pos = findmatch(oap, NUL)) != NULL)
3060 		{
3061 		    curwin->w_cursor = *pos;
3062 		    if (oap->motion_type == MLINE)
3063 			VIsual_mode = 'V';
3064 		    else if (*p_sel == 'e')
3065 		    {
3066 			if (LT_POS(curwin->w_cursor, VIsual))
3067 			    ++VIsual.col;
3068 			else
3069 			    ++curwin->w_cursor.col;
3070 		    }
3071 		}
3072 	    }
3073 
3074 	    if (pos == NULL && (is_click || is_drag))
3075 	    {
3076 		/* When not found a match or when dragging: extend to include
3077 		 * a word. */
3078 		if (LT_POS(curwin->w_cursor, orig_cursor))
3079 		{
3080 		    find_start_of_word(&curwin->w_cursor);
3081 		    find_end_of_word(&VIsual);
3082 		}
3083 		else
3084 		{
3085 		    find_start_of_word(&VIsual);
3086 		    if (*p_sel == 'e' && *ml_get_cursor() != NUL)
3087 			curwin->w_cursor.col +=
3088 					 (*mb_ptr2len)(ml_get_cursor());
3089 		    find_end_of_word(&curwin->w_cursor);
3090 		}
3091 	    }
3092 	    curwin->w_set_curswant = TRUE;
3093 	}
3094 	if (is_click)
3095 	    redraw_curbuf_later(INVERTED);	/* update the inversion */
3096     }
3097     else if (VIsual_active && !old_active)
3098     {
3099 	if (mod_mask & MOD_MASK_ALT)
3100 	    VIsual_mode = Ctrl_V;
3101 	else
3102 	    VIsual_mode = 'v';
3103     }
3104 
3105     /* If Visual mode changed show it later. */
3106     if ((!VIsual_active && old_active && mode_displayed)
3107 	    || (VIsual_active && p_smd && msg_silent == 0
3108 				 && (!old_active || VIsual_mode != old_mode)))
3109 	redraw_cmdline = TRUE;
3110 
3111     return moved;
3112 }
3113 
3114 /*
3115  * Move "pos" back to the start of the word it's in.
3116  */
3117     static void
3118 find_start_of_word(pos_T *pos)
3119 {
3120     char_u	*line;
3121     int		cclass;
3122     int		col;
3123 
3124     line = ml_get(pos->lnum);
3125     cclass = get_mouse_class(line + pos->col);
3126 
3127     while (pos->col > 0)
3128     {
3129 	col = pos->col - 1;
3130 	col -= (*mb_head_off)(line, line + col);
3131 	if (get_mouse_class(line + col) != cclass)
3132 	    break;
3133 	pos->col = col;
3134     }
3135 }
3136 
3137 /*
3138  * Move "pos" forward to the end of the word it's in.
3139  * When 'selection' is "exclusive", the position is just after the word.
3140  */
3141     static void
3142 find_end_of_word(pos_T *pos)
3143 {
3144     char_u	*line;
3145     int		cclass;
3146     int		col;
3147 
3148     line = ml_get(pos->lnum);
3149     if (*p_sel == 'e' && pos->col > 0)
3150     {
3151 	--pos->col;
3152 	pos->col -= (*mb_head_off)(line, line + pos->col);
3153     }
3154     cclass = get_mouse_class(line + pos->col);
3155     while (line[pos->col] != NUL)
3156     {
3157 	col = pos->col + (*mb_ptr2len)(line + pos->col);
3158 	if (get_mouse_class(line + col) != cclass)
3159 	{
3160 	    if (*p_sel == 'e')
3161 		pos->col = col;
3162 	    break;
3163 	}
3164 	pos->col = col;
3165     }
3166 }
3167 
3168 /*
3169  * Get class of a character for selection: same class means same word.
3170  * 0: blank
3171  * 1: punctuation groups
3172  * 2: normal word character
3173  * >2: multi-byte word character.
3174  */
3175     static int
3176 get_mouse_class(char_u *p)
3177 {
3178     int		c;
3179 
3180     if (has_mbyte && MB_BYTE2LEN(p[0]) > 1)
3181 	return mb_get_class(p);
3182 
3183     c = *p;
3184     if (c == ' ' || c == '\t')
3185 	return 0;
3186 
3187     if (vim_iswordc(c))
3188 	return 2;
3189 
3190     /*
3191      * There are a few special cases where we want certain combinations of
3192      * characters to be considered as a single word.  These are things like
3193      * "->", "/ *", "*=", "+=", "&=", "<=", ">=", "!=" etc.  Otherwise, each
3194      * character is in its own class.
3195      */
3196     if (c != NUL && vim_strchr((char_u *)"-+*/%<>&|^!=", c) != NULL)
3197 	return 1;
3198     return c;
3199 }
3200 #endif /* FEAT_MOUSE */
3201 
3202 /*
3203  * Check if  highlighting for visual mode is possible, give a warning message
3204  * if not.
3205  */
3206     void
3207 check_visual_highlight(void)
3208 {
3209     static int	    did_check = FALSE;
3210 
3211     if (full_screen)
3212     {
3213 	if (!did_check && HL_ATTR(HLF_V) == 0)
3214 	    msg(_("Warning: terminal cannot highlight"));
3215 	did_check = TRUE;
3216     }
3217 }
3218 
3219 /*
3220  * End Visual mode.
3221  * This function should ALWAYS be called to end Visual mode, except from
3222  * do_pending_operator().
3223  */
3224     void
3225 end_visual_mode(void)
3226 {
3227 #ifdef FEAT_CLIPBOARD
3228     /*
3229      * If we are using the clipboard, then remember what was selected in case
3230      * we need to paste it somewhere while we still own the selection.
3231      * Only do this when the clipboard is already owned.  Don't want to grab
3232      * the selection when hitting ESC.
3233      */
3234     if (clip_star.available && clip_star.owned)
3235 	clip_auto_select();
3236 #endif
3237 
3238     VIsual_active = FALSE;
3239 #ifdef FEAT_MOUSE
3240     setmouse();
3241     mouse_dragging = 0;
3242 #endif
3243 
3244     /* Save the current VIsual area for '< and '> marks, and "gv" */
3245     curbuf->b_visual.vi_mode = VIsual_mode;
3246     curbuf->b_visual.vi_start = VIsual;
3247     curbuf->b_visual.vi_end = curwin->w_cursor;
3248     curbuf->b_visual.vi_curswant = curwin->w_curswant;
3249 #ifdef FEAT_EVAL
3250     curbuf->b_visual_mode_eval = VIsual_mode;
3251 #endif
3252     if (!virtual_active())
3253 	curwin->w_cursor.coladd = 0;
3254     may_clear_cmdline();
3255 
3256     adjust_cursor_eol();
3257 }
3258 
3259 /*
3260  * Reset VIsual_active and VIsual_reselect.
3261  */
3262     void
3263 reset_VIsual_and_resel(void)
3264 {
3265     if (VIsual_active)
3266     {
3267 	end_visual_mode();
3268 	redraw_curbuf_later(INVERTED);	/* delete the inversion later */
3269     }
3270     VIsual_reselect = FALSE;
3271 }
3272 
3273 /*
3274  * Reset VIsual_active and VIsual_reselect if it's set.
3275  */
3276     void
3277 reset_VIsual(void)
3278 {
3279     if (VIsual_active)
3280     {
3281 	end_visual_mode();
3282 	redraw_curbuf_later(INVERTED);	/* delete the inversion later */
3283 	VIsual_reselect = FALSE;
3284     }
3285 }
3286 
3287 /*
3288  * Check for a balloon-eval special item to include when searching for an
3289  * identifier.  When "dir" is BACKWARD "ptr[-1]" must be valid!
3290  * Returns TRUE if the character at "*ptr" should be included.
3291  * "dir" is FORWARD or BACKWARD, the direction of searching.
3292  * "*colp" is in/decremented if "ptr[-dir]" should also be included.
3293  * "bnp" points to a counter for square brackets.
3294  */
3295     static int
3296 find_is_eval_item(
3297     char_u	*ptr,
3298     int		*colp,
3299     int		*bnp,
3300     int		dir)
3301 {
3302     /* Accept everything inside []. */
3303     if ((*ptr == ']' && dir == BACKWARD) || (*ptr == '[' && dir == FORWARD))
3304 	++*bnp;
3305     if (*bnp > 0)
3306     {
3307 	if ((*ptr == '[' && dir == BACKWARD) || (*ptr == ']' && dir == FORWARD))
3308 	    --*bnp;
3309 	return TRUE;
3310     }
3311 
3312     /* skip over "s.var" */
3313     if (*ptr == '.')
3314 	return TRUE;
3315 
3316     /* two-character item: s->var */
3317     if (ptr[dir == BACKWARD ? 0 : 1] == '>'
3318 	    && ptr[dir == BACKWARD ? -1 : 0] == '-')
3319     {
3320 	*colp += dir;
3321 	return TRUE;
3322     }
3323     return FALSE;
3324 }
3325 
3326 /*
3327  * Find the identifier under or to the right of the cursor.
3328  * "find_type" can have one of three values:
3329  * FIND_IDENT:   find an identifier (keyword)
3330  * FIND_STRING:  find any non-white text
3331  * FIND_IDENT + FIND_STRING: find any non-white text, identifier preferred.
3332  * FIND_EVAL:	 find text useful for C program debugging
3333  *
3334  * There are three steps:
3335  * 1. Search forward for the start of an identifier/text.  Doesn't move if
3336  *    already on one.
3337  * 2. Search backward for the start of this identifier/text.
3338  *    This doesn't match the real Vi but I like it a little better and it
3339  *    shouldn't bother anyone.
3340  * 3. Search forward to the end of this identifier/text.
3341  *    When FIND_IDENT isn't defined, we backup until a blank.
3342  *
3343  * Returns the length of the text, or zero if no text is found.
3344  * If text is found, a pointer to the text is put in "*text".  This
3345  * points into the current buffer line and is not always NUL terminated.
3346  */
3347     int
3348 find_ident_under_cursor(char_u **text, int find_type)
3349 {
3350     return find_ident_at_pos(curwin, curwin->w_cursor.lnum,
3351 				curwin->w_cursor.col, text, NULL, find_type);
3352 }
3353 
3354 /*
3355  * Like find_ident_under_cursor(), but for any window and any position.
3356  * However: Uses 'iskeyword' from the current window!.
3357  */
3358     int
3359 find_ident_at_pos(
3360     win_T	*wp,
3361     linenr_T	lnum,
3362     colnr_T	startcol,
3363     char_u	**text,
3364     int		*textcol,	// column where "text" starts, can be NULL
3365     int		find_type)
3366 {
3367     char_u	*ptr;
3368     int		col = 0;	// init to shut up GCC
3369     int		i;
3370     int		this_class = 0;
3371     int		prev_class;
3372     int		prevcol;
3373     int		bn = 0;		// bracket nesting
3374 
3375     /*
3376      * if i == 0: try to find an identifier
3377      * if i == 1: try to find any non-white text
3378      */
3379     ptr = ml_get_buf(wp->w_buffer, lnum, FALSE);
3380     for (i = (find_type & FIND_IDENT) ? 0 : 1;	i < 2; ++i)
3381     {
3382 	/*
3383 	 * 1. skip to start of identifier/text
3384 	 */
3385 	col = startcol;
3386 	if (has_mbyte)
3387 	{
3388 	    while (ptr[col] != NUL)
3389 	    {
3390 		// Stop at a ']' to evaluate "a[x]".
3391 		if ((find_type & FIND_EVAL) && ptr[col] == ']')
3392 		    break;
3393 		this_class = mb_get_class(ptr + col);
3394 		if (this_class != 0 && (i == 1 || this_class != 1))
3395 		    break;
3396 		col += (*mb_ptr2len)(ptr + col);
3397 	    }
3398 	}
3399 	else
3400 	    while (ptr[col] != NUL
3401 		    && (i == 0 ? !vim_iswordc(ptr[col]) : VIM_ISWHITE(ptr[col]))
3402 		    && (!(find_type & FIND_EVAL) || ptr[col] != ']')
3403 		    )
3404 		++col;
3405 
3406 	// When starting on a ']' count it, so that we include the '['.
3407 	bn = ptr[col] == ']';
3408 
3409 	/*
3410 	 * 2. Back up to start of identifier/text.
3411 	 */
3412 	if (has_mbyte)
3413 	{
3414 	    /* Remember class of character under cursor. */
3415 	    if ((find_type & FIND_EVAL) && ptr[col] == ']')
3416 		this_class = mb_get_class((char_u *)"a");
3417 	    else
3418 		this_class = mb_get_class(ptr + col);
3419 	    while (col > 0 && this_class != 0)
3420 	    {
3421 		prevcol = col - 1 - (*mb_head_off)(ptr, ptr + col - 1);
3422 		prev_class = mb_get_class(ptr + prevcol);
3423 		if (this_class != prev_class
3424 			&& (i == 0
3425 			    || prev_class == 0
3426 			    || (find_type & FIND_IDENT))
3427 			&& (!(find_type & FIND_EVAL)
3428 			    || prevcol == 0
3429 			    || !find_is_eval_item(ptr + prevcol, &prevcol,
3430 							       &bn, BACKWARD))
3431 			)
3432 		    break;
3433 		col = prevcol;
3434 	    }
3435 
3436 	    // If we don't want just any old text, or we've found an
3437 	    // identifier, stop searching.
3438 	    if (this_class > 2)
3439 		this_class = 2;
3440 	    if (!(find_type & FIND_STRING) || this_class == 2)
3441 		break;
3442 	}
3443 	else
3444 	{
3445 	    while (col > 0
3446 		    && ((i == 0
3447 			    ? vim_iswordc(ptr[col - 1])
3448 			    : (!VIM_ISWHITE(ptr[col - 1])
3449 				&& (!(find_type & FIND_IDENT)
3450 				    || !vim_iswordc(ptr[col - 1]))))
3451 			|| ((find_type & FIND_EVAL)
3452 			    && col > 1
3453 			    && find_is_eval_item(ptr + col - 1, &col,
3454 							       &bn, BACKWARD))
3455 			))
3456 		--col;
3457 
3458 	    // If we don't want just any old text, or we've found an
3459 	    // identifier, stop searching.
3460 	    if (!(find_type & FIND_STRING) || vim_iswordc(ptr[col]))
3461 		break;
3462 	}
3463     }
3464 
3465     if (ptr[col] == NUL || (i == 0
3466 		&& (has_mbyte ? this_class != 2 : !vim_iswordc(ptr[col]))))
3467     {
3468 	// didn't find an identifier or text
3469 	if ((find_type & FIND_NOERROR) == 0)
3470 	{
3471 	    if (find_type & FIND_STRING)
3472 		emsg(_("E348: No string under cursor"));
3473 	    else
3474 		emsg(_(e_noident));
3475 	}
3476 	return 0;
3477     }
3478     ptr += col;
3479     *text = ptr;
3480     if (textcol != NULL)
3481 	*textcol = col;
3482 
3483     /*
3484      * 3. Find the end if the identifier/text.
3485      */
3486     bn = 0;
3487     startcol -= col;
3488     col = 0;
3489     if (has_mbyte)
3490     {
3491 	// Search for point of changing multibyte character class.
3492 	this_class = mb_get_class(ptr);
3493 	while (ptr[col] != NUL
3494 		&& ((i == 0 ? mb_get_class(ptr + col) == this_class
3495 			    : mb_get_class(ptr + col) != 0)
3496 		    || ((find_type & FIND_EVAL)
3497 			&& col <= (int)startcol
3498 			&& find_is_eval_item(ptr + col, &col, &bn, FORWARD))
3499 		))
3500 	    col += (*mb_ptr2len)(ptr + col);
3501     }
3502     else
3503 	while ((i == 0 ? vim_iswordc(ptr[col])
3504 		       : (ptr[col] != NUL && !VIM_ISWHITE(ptr[col])))
3505 		    || ((find_type & FIND_EVAL)
3506 			&& col <= (int)startcol
3507 			&& find_is_eval_item(ptr + col, &col, &bn, FORWARD))
3508 		)
3509 	    ++col;
3510 
3511     return col;
3512 }
3513 
3514 /*
3515  * Prepare for redo of a normal command.
3516  */
3517     static void
3518 prep_redo_cmd(cmdarg_T *cap)
3519 {
3520     prep_redo(cap->oap->regname, cap->count0,
3521 				     NUL, cap->cmdchar, NUL, NUL, cap->nchar);
3522 }
3523 
3524 /*
3525  * Prepare for redo of any command.
3526  * Note that only the last argument can be a multi-byte char.
3527  */
3528     static void
3529 prep_redo(
3530     int	    regname,
3531     long    num,
3532     int	    cmd1,
3533     int	    cmd2,
3534     int	    cmd3,
3535     int	    cmd4,
3536     int	    cmd5)
3537 {
3538     ResetRedobuff();
3539     if (regname != 0)	/* yank from specified buffer */
3540     {
3541 	AppendCharToRedobuff('"');
3542 	AppendCharToRedobuff(regname);
3543     }
3544     if (num)
3545 	AppendNumberToRedobuff(num);
3546 
3547     if (cmd1 != NUL)
3548 	AppendCharToRedobuff(cmd1);
3549     if (cmd2 != NUL)
3550 	AppendCharToRedobuff(cmd2);
3551     if (cmd3 != NUL)
3552 	AppendCharToRedobuff(cmd3);
3553     if (cmd4 != NUL)
3554 	AppendCharToRedobuff(cmd4);
3555     if (cmd5 != NUL)
3556 	AppendCharToRedobuff(cmd5);
3557 }
3558 
3559 /*
3560  * check for operator active and clear it
3561  *
3562  * return TRUE if operator was active
3563  */
3564     static int
3565 checkclearop(oparg_T *oap)
3566 {
3567     if (oap->op_type == OP_NOP)
3568 	return FALSE;
3569     clearopbeep(oap);
3570     return TRUE;
3571 }
3572 
3573 /*
3574  * Check for operator or Visual active.  Clear active operator.
3575  *
3576  * Return TRUE if operator or Visual was active.
3577  */
3578     static int
3579 checkclearopq(oparg_T *oap)
3580 {
3581     if (oap->op_type == OP_NOP && !VIsual_active)
3582 	return FALSE;
3583     clearopbeep(oap);
3584     return TRUE;
3585 }
3586 
3587     static void
3588 clearop(oparg_T *oap)
3589 {
3590     oap->op_type = OP_NOP;
3591     oap->regname = 0;
3592     oap->motion_force = NUL;
3593     oap->use_reg_one = FALSE;
3594 }
3595 
3596     static void
3597 clearopbeep(oparg_T *oap)
3598 {
3599     clearop(oap);
3600     beep_flush();
3601 }
3602 
3603 /*
3604  * Remove the shift modifier from a special key.
3605  */
3606     static void
3607 unshift_special(cmdarg_T *cap)
3608 {
3609     switch (cap->cmdchar)
3610     {
3611 	case K_S_RIGHT:	cap->cmdchar = K_RIGHT; break;
3612 	case K_S_LEFT:	cap->cmdchar = K_LEFT; break;
3613 	case K_S_UP:	cap->cmdchar = K_UP; break;
3614 	case K_S_DOWN:	cap->cmdchar = K_DOWN; break;
3615 	case K_S_HOME:	cap->cmdchar = K_HOME; break;
3616 	case K_S_END:	cap->cmdchar = K_END; break;
3617     }
3618     cap->cmdchar = simplify_key(cap->cmdchar, &mod_mask);
3619 }
3620 
3621 /*
3622  * If the mode is currently displayed clear the command line or update the
3623  * command displayed.
3624  */
3625     static void
3626 may_clear_cmdline(void)
3627 {
3628     if (mode_displayed)
3629 	clear_cmdline = TRUE;   /* unshow visual mode later */
3630 #ifdef FEAT_CMDL_INFO
3631     else
3632 	clear_showcmd();
3633 #endif
3634 }
3635 
3636 #if defined(FEAT_CMDL_INFO) || defined(PROTO)
3637 /*
3638  * Routines for displaying a partly typed command
3639  */
3640 
3641 #define SHOWCMD_BUFLEN SHOWCMD_COLS + 1 + 30
3642 static char_u	showcmd_buf[SHOWCMD_BUFLEN];
3643 static char_u	old_showcmd_buf[SHOWCMD_BUFLEN];  /* For push_showcmd() */
3644 static int	showcmd_is_clear = TRUE;
3645 static int	showcmd_visual = FALSE;
3646 
3647 static void display_showcmd(void);
3648 
3649     void
3650 clear_showcmd(void)
3651 {
3652     if (!p_sc)
3653 	return;
3654 
3655     if (VIsual_active && !char_avail())
3656     {
3657 	int		cursor_bot = LT_POS(VIsual, curwin->w_cursor);
3658 	long		lines;
3659 	colnr_T		leftcol, rightcol;
3660 	linenr_T	top, bot;
3661 
3662 	/* Show the size of the Visual area. */
3663 	if (cursor_bot)
3664 	{
3665 	    top = VIsual.lnum;
3666 	    bot = curwin->w_cursor.lnum;
3667 	}
3668 	else
3669 	{
3670 	    top = curwin->w_cursor.lnum;
3671 	    bot = VIsual.lnum;
3672 	}
3673 # ifdef FEAT_FOLDING
3674 	/* Include closed folds as a whole. */
3675 	(void)hasFolding(top, &top, NULL);
3676 	(void)hasFolding(bot, NULL, &bot);
3677 # endif
3678 	lines = bot - top + 1;
3679 
3680 	if (VIsual_mode == Ctrl_V)
3681 	{
3682 # ifdef FEAT_LINEBREAK
3683 	    char_u *saved_sbr = p_sbr;
3684 
3685 	    /* Make 'sbr' empty for a moment to get the correct size. */
3686 	    p_sbr = empty_option;
3687 # endif
3688 	    getvcols(curwin, &curwin->w_cursor, &VIsual, &leftcol, &rightcol);
3689 # ifdef FEAT_LINEBREAK
3690 	    p_sbr = saved_sbr;
3691 # endif
3692 	    sprintf((char *)showcmd_buf, "%ldx%ld", lines,
3693 					      (long)(rightcol - leftcol + 1));
3694 	}
3695 	else if (VIsual_mode == 'V' || VIsual.lnum != curwin->w_cursor.lnum)
3696 	    sprintf((char *)showcmd_buf, "%ld", lines);
3697 	else
3698 	{
3699 	    char_u  *s, *e;
3700 	    int	    l;
3701 	    int	    bytes = 0;
3702 	    int	    chars = 0;
3703 
3704 	    if (cursor_bot)
3705 	    {
3706 		s = ml_get_pos(&VIsual);
3707 		e = ml_get_cursor();
3708 	    }
3709 	    else
3710 	    {
3711 		s = ml_get_cursor();
3712 		e = ml_get_pos(&VIsual);
3713 	    }
3714 	    while ((*p_sel != 'e') ? s <= e : s < e)
3715 	    {
3716 		l = (*mb_ptr2len)(s);
3717 		if (l == 0)
3718 		{
3719 		    ++bytes;
3720 		    ++chars;
3721 		    break;  /* end of line */
3722 		}
3723 		bytes += l;
3724 		++chars;
3725 		s += l;
3726 	    }
3727 	    if (bytes == chars)
3728 		sprintf((char *)showcmd_buf, "%d", chars);
3729 	    else
3730 		sprintf((char *)showcmd_buf, "%d-%d", chars, bytes);
3731 	}
3732 	showcmd_buf[SHOWCMD_COLS] = NUL;	/* truncate */
3733 	showcmd_visual = TRUE;
3734     }
3735     else
3736     {
3737 	showcmd_buf[0] = NUL;
3738 	showcmd_visual = FALSE;
3739 
3740 	/* Don't actually display something if there is nothing to clear. */
3741 	if (showcmd_is_clear)
3742 	    return;
3743     }
3744 
3745     display_showcmd();
3746 }
3747 
3748 /*
3749  * Add 'c' to string of shown command chars.
3750  * Return TRUE if output has been written (and setcursor() has been called).
3751  */
3752     int
3753 add_to_showcmd(int c)
3754 {
3755     char_u	*p;
3756     int		old_len;
3757     int		extra_len;
3758     int		overflow;
3759 #if defined(FEAT_MOUSE)
3760     int		i;
3761     static int	ignore[] =
3762     {
3763 # ifdef FEAT_GUI
3764 	K_VER_SCROLLBAR, K_HOR_SCROLLBAR,
3765 	K_LEFTMOUSE_NM, K_LEFTRELEASE_NM,
3766 # endif
3767 	K_IGNORE, K_PS,
3768 	K_LEFTMOUSE, K_LEFTDRAG, K_LEFTRELEASE, K_MOUSEMOVE,
3769 	K_MIDDLEMOUSE, K_MIDDLEDRAG, K_MIDDLERELEASE,
3770 	K_RIGHTMOUSE, K_RIGHTDRAG, K_RIGHTRELEASE,
3771 	K_MOUSEDOWN, K_MOUSEUP, K_MOUSELEFT, K_MOUSERIGHT,
3772 	K_X1MOUSE, K_X1DRAG, K_X1RELEASE, K_X2MOUSE, K_X2DRAG, K_X2RELEASE,
3773 	K_CURSORHOLD,
3774 	0
3775     };
3776 #endif
3777 
3778     if (!p_sc || msg_silent != 0)
3779 	return FALSE;
3780 
3781     if (showcmd_visual)
3782     {
3783 	showcmd_buf[0] = NUL;
3784 	showcmd_visual = FALSE;
3785     }
3786 
3787 #if defined(FEAT_MOUSE)
3788     /* Ignore keys that are scrollbar updates and mouse clicks */
3789     if (IS_SPECIAL(c))
3790 	for (i = 0; ignore[i] != 0; ++i)
3791 	    if (ignore[i] == c)
3792 		return FALSE;
3793 #endif
3794 
3795     p = transchar(c);
3796     if (*p == ' ')
3797 	STRCPY(p, "<20>");
3798     old_len = (int)STRLEN(showcmd_buf);
3799     extra_len = (int)STRLEN(p);
3800     overflow = old_len + extra_len - SHOWCMD_COLS;
3801     if (overflow > 0)
3802 	mch_memmove(showcmd_buf, showcmd_buf + overflow,
3803 						      old_len - overflow + 1);
3804     STRCAT(showcmd_buf, p);
3805 
3806     if (char_avail())
3807 	return FALSE;
3808 
3809     display_showcmd();
3810 
3811     return TRUE;
3812 }
3813 
3814     void
3815 add_to_showcmd_c(int c)
3816 {
3817     if (!add_to_showcmd(c))
3818 	setcursor();
3819 }
3820 
3821 /*
3822  * Delete 'len' characters from the end of the shown command.
3823  */
3824     static void
3825 del_from_showcmd(int len)
3826 {
3827     int	    old_len;
3828 
3829     if (!p_sc)
3830 	return;
3831 
3832     old_len = (int)STRLEN(showcmd_buf);
3833     if (len > old_len)
3834 	len = old_len;
3835     showcmd_buf[old_len - len] = NUL;
3836 
3837     if (!char_avail())
3838 	display_showcmd();
3839 }
3840 
3841 /*
3842  * push_showcmd() and pop_showcmd() are used when waiting for the user to type
3843  * something and there is a partial mapping.
3844  */
3845     void
3846 push_showcmd(void)
3847 {
3848     if (p_sc)
3849 	STRCPY(old_showcmd_buf, showcmd_buf);
3850 }
3851 
3852     void
3853 pop_showcmd(void)
3854 {
3855     if (!p_sc)
3856 	return;
3857 
3858     STRCPY(showcmd_buf, old_showcmd_buf);
3859 
3860     display_showcmd();
3861 }
3862 
3863     static void
3864 display_showcmd(void)
3865 {
3866     int	    len;
3867 
3868     cursor_off();
3869 
3870     len = (int)STRLEN(showcmd_buf);
3871     if (len == 0)
3872 	showcmd_is_clear = TRUE;
3873     else
3874     {
3875 	screen_puts(showcmd_buf, (int)Rows - 1, sc_col, 0);
3876 	showcmd_is_clear = FALSE;
3877     }
3878 
3879     /*
3880      * clear the rest of an old message by outputting up to SHOWCMD_COLS
3881      * spaces
3882      */
3883     screen_puts((char_u *)"          " + len, (int)Rows - 1, sc_col + len, 0);
3884 
3885     setcursor();	    /* put cursor back where it belongs */
3886 }
3887 #endif
3888 
3889 /*
3890  * When "check" is FALSE, prepare for commands that scroll the window.
3891  * When "check" is TRUE, take care of scroll-binding after the window has
3892  * scrolled.  Called from normal_cmd() and edit().
3893  */
3894     void
3895 do_check_scrollbind(int check)
3896 {
3897     static win_T	*old_curwin = NULL;
3898     static linenr_T	old_topline = 0;
3899 #ifdef FEAT_DIFF
3900     static int		old_topfill = 0;
3901 #endif
3902     static buf_T	*old_buf = NULL;
3903     static colnr_T	old_leftcol = 0;
3904 
3905     if (check && curwin->w_p_scb)
3906     {
3907 	/* If a ":syncbind" command was just used, don't scroll, only reset
3908 	 * the values. */
3909 	if (did_syncbind)
3910 	    did_syncbind = FALSE;
3911 	else if (curwin == old_curwin)
3912 	{
3913 	    /*
3914 	     * Synchronize other windows, as necessary according to
3915 	     * 'scrollbind'.  Don't do this after an ":edit" command, except
3916 	     * when 'diff' is set.
3917 	     */
3918 	    if ((curwin->w_buffer == old_buf
3919 #ifdef FEAT_DIFF
3920 			|| curwin->w_p_diff
3921 #endif
3922 		)
3923 		&& (curwin->w_topline != old_topline
3924 #ifdef FEAT_DIFF
3925 			|| curwin->w_topfill != old_topfill
3926 #endif
3927 			|| curwin->w_leftcol != old_leftcol))
3928 	    {
3929 		check_scrollbind(curwin->w_topline - old_topline,
3930 			(long)(curwin->w_leftcol - old_leftcol));
3931 	    }
3932 	}
3933 	else if (vim_strchr(p_sbo, 'j')) /* jump flag set in 'scrollopt' */
3934 	{
3935 	    /*
3936 	     * When switching between windows, make sure that the relative
3937 	     * vertical offset is valid for the new window.  The relative
3938 	     * offset is invalid whenever another 'scrollbind' window has
3939 	     * scrolled to a point that would force the current window to
3940 	     * scroll past the beginning or end of its buffer.  When the
3941 	     * resync is performed, some of the other 'scrollbind' windows may
3942 	     * need to jump so that the current window's relative position is
3943 	     * visible on-screen.
3944 	     */
3945 	    check_scrollbind(curwin->w_topline - curwin->w_scbind_pos, 0L);
3946 	}
3947 	curwin->w_scbind_pos = curwin->w_topline;
3948     }
3949 
3950     old_curwin = curwin;
3951     old_topline = curwin->w_topline;
3952 #ifdef FEAT_DIFF
3953     old_topfill = curwin->w_topfill;
3954 #endif
3955     old_buf = curwin->w_buffer;
3956     old_leftcol = curwin->w_leftcol;
3957 }
3958 
3959 /*
3960  * Synchronize any windows that have "scrollbind" set, based on the
3961  * number of rows by which the current window has changed
3962  * (1998-11-02 16:21:01  R. Edward Ralston <[email protected]>)
3963  */
3964     void
3965 check_scrollbind(linenr_T topline_diff, long leftcol_diff)
3966 {
3967     int		want_ver;
3968     int		want_hor;
3969     win_T	*old_curwin = curwin;
3970     buf_T	*old_curbuf = curbuf;
3971     int		old_VIsual_select = VIsual_select;
3972     int		old_VIsual_active = VIsual_active;
3973     colnr_T	tgt_leftcol = curwin->w_leftcol;
3974     long	topline;
3975     long	y;
3976 
3977     /*
3978      * check 'scrollopt' string for vertical and horizontal scroll options
3979      */
3980     want_ver = (vim_strchr(p_sbo, 'v') && topline_diff != 0);
3981 #ifdef FEAT_DIFF
3982     want_ver |= old_curwin->w_p_diff;
3983 #endif
3984     want_hor = (vim_strchr(p_sbo, 'h') && (leftcol_diff || topline_diff != 0));
3985 
3986     /*
3987      * loop through the scrollbound windows and scroll accordingly
3988      */
3989     VIsual_select = VIsual_active = 0;
3990     FOR_ALL_WINDOWS(curwin)
3991     {
3992 	curbuf = curwin->w_buffer;
3993 	/* skip original window  and windows with 'noscrollbind' */
3994 	if (curwin != old_curwin && curwin->w_p_scb)
3995 	{
3996 	    /*
3997 	     * do the vertical scroll
3998 	     */
3999 	    if (want_ver)
4000 	    {
4001 #ifdef FEAT_DIFF
4002 		if (old_curwin->w_p_diff && curwin->w_p_diff)
4003 		{
4004 		    diff_set_topline(old_curwin, curwin);
4005 		}
4006 		else
4007 #endif
4008 		{
4009 		    curwin->w_scbind_pos += topline_diff;
4010 		    topline = curwin->w_scbind_pos;
4011 		    if (topline > curbuf->b_ml.ml_line_count)
4012 			topline = curbuf->b_ml.ml_line_count;
4013 		    if (topline < 1)
4014 			topline = 1;
4015 
4016 		    y = topline - curwin->w_topline;
4017 		    if (y > 0)
4018 			scrollup(y, FALSE);
4019 		    else
4020 			scrolldown(-y, FALSE);
4021 		}
4022 
4023 		redraw_later(VALID);
4024 		cursor_correct();
4025 		curwin->w_redr_status = TRUE;
4026 	    }
4027 
4028 	    /*
4029 	     * do the horizontal scroll
4030 	     */
4031 	    if (want_hor && curwin->w_leftcol != tgt_leftcol)
4032 	    {
4033 		curwin->w_leftcol = tgt_leftcol;
4034 		leftcol_changed();
4035 	    }
4036 	}
4037     }
4038 
4039     /*
4040      * reset current-window
4041      */
4042     VIsual_select = old_VIsual_select;
4043     VIsual_active = old_VIsual_active;
4044     curwin = old_curwin;
4045     curbuf = old_curbuf;
4046 }
4047 
4048 /*
4049  * Command character that's ignored.
4050  * Used for CTRL-Q and CTRL-S to avoid problems with terminals that use
4051  * xon/xoff.
4052  */
4053     static void
4054 nv_ignore(cmdarg_T *cap)
4055 {
4056     cap->retval |= CA_COMMAND_BUSY;	/* don't call edit() now */
4057 }
4058 
4059 /*
4060  * Command character that doesn't do anything, but unlike nv_ignore() does
4061  * start edit().  Used for "startinsert" executed while starting up.
4062  */
4063     static void
4064 nv_nop(cmdarg_T *cap UNUSED)
4065 {
4066 }
4067 
4068 /*
4069  * Command character doesn't exist.
4070  */
4071     static void
4072 nv_error(cmdarg_T *cap)
4073 {
4074     clearopbeep(cap->oap);
4075 }
4076 
4077 /*
4078  * <Help> and <F1> commands.
4079  */
4080     static void
4081 nv_help(cmdarg_T *cap)
4082 {
4083     if (!checkclearopq(cap->oap))
4084 	ex_help(NULL);
4085 }
4086 
4087 /*
4088  * CTRL-A and CTRL-X: Add or subtract from letter or number under cursor.
4089  */
4090     static void
4091 nv_addsub(cmdarg_T *cap)
4092 {
4093 #ifdef FEAT_JOB_CHANNEL
4094     if (bt_prompt(curbuf) && !prompt_curpos_editable())
4095 	clearopbeep(cap->oap);
4096     else
4097 #endif
4098     if (!VIsual_active && cap->oap->op_type == OP_NOP)
4099     {
4100 	prep_redo_cmd(cap);
4101 	cap->oap->op_type = cap->cmdchar == Ctrl_A ?  OP_NR_ADD : OP_NR_SUB;
4102 	op_addsub(cap->oap, cap->count1, cap->arg);
4103 	cap->oap->op_type = OP_NOP;
4104     }
4105     else if (VIsual_active)
4106 	nv_operator(cap);
4107     else
4108 	clearop(cap->oap);
4109 }
4110 
4111 /*
4112  * CTRL-F, CTRL-B, etc: Scroll page up or down.
4113  */
4114     static void
4115 nv_page(cmdarg_T *cap)
4116 {
4117     if (!checkclearop(cap->oap))
4118     {
4119 	if (mod_mask & MOD_MASK_CTRL)
4120 	{
4121 	    /* <C-PageUp>: tab page back; <C-PageDown>: tab page forward */
4122 	    if (cap->arg == BACKWARD)
4123 		goto_tabpage(-(int)cap->count1);
4124 	    else
4125 		goto_tabpage((int)cap->count0);
4126 	}
4127 	else
4128 	    (void)onepage(cap->arg, cap->count1);
4129     }
4130 }
4131 
4132 /*
4133  * Implementation of "gd" and "gD" command.
4134  */
4135     static void
4136 nv_gd(
4137     oparg_T	*oap,
4138     int		nchar,
4139     int		thisblock)	/* 1 for "1gd" and "1gD" */
4140 {
4141     int		len;
4142     char_u	*ptr;
4143 
4144     if ((len = find_ident_under_cursor(&ptr, FIND_IDENT)) == 0
4145 	    || find_decl(ptr, len, nchar == 'd', thisblock, SEARCH_START)
4146 								      == FAIL)
4147 	clearopbeep(oap);
4148 #ifdef FEAT_FOLDING
4149     else if ((fdo_flags & FDO_SEARCH) && KeyTyped && oap->op_type == OP_NOP)
4150 	foldOpenCursor();
4151 #endif
4152 }
4153 
4154 /*
4155  * Return TRUE if line[offset] is not inside a C-style comment or string, FALSE
4156  * otherwise.
4157  */
4158     static int
4159 is_ident(char_u *line, int offset)
4160 {
4161     int	i;
4162     int	incomment = FALSE;
4163     int	instring = 0;
4164     int	prev = 0;
4165 
4166     for (i = 0; i < offset && line[i] != NUL; i++)
4167     {
4168 	if (instring != 0)
4169 	{
4170 	    if (prev != '\\' && line[i] == instring)
4171 		instring = 0;
4172 	}
4173 	else if ((line[i] == '"' || line[i] == '\'') && !incomment)
4174 	{
4175 	    instring = line[i];
4176 	}
4177 	else
4178 	{
4179 	    if (incomment)
4180 	    {
4181 		if (prev == '*' && line[i] == '/')
4182 		    incomment = FALSE;
4183 	    }
4184 	    else if (prev == '/' && line[i] == '*')
4185 	    {
4186 		incomment = TRUE;
4187 	    }
4188 	    else if (prev == '/' && line[i] == '/')
4189 	    {
4190 		return FALSE;
4191 	    }
4192 	}
4193 
4194 	prev = line[i];
4195     }
4196 
4197     return incomment == FALSE && instring == 0;
4198 }
4199 
4200 /*
4201  * Search for variable declaration of "ptr[len]".
4202  * When "locally" is TRUE in the current function ("gd"), otherwise in the
4203  * current file ("gD").
4204  * When "thisblock" is TRUE check the {} block scope.
4205  * Return FAIL when not found.
4206  */
4207     int
4208 find_decl(
4209     char_u	*ptr,
4210     int		len,
4211     int		locally,
4212     int		thisblock,
4213     int		flags_arg)	/* flags passed to searchit() */
4214 {
4215     char_u	*pat;
4216     pos_T	old_pos;
4217     pos_T	par_pos;
4218     pos_T	found_pos;
4219     int		t;
4220     int		save_p_ws;
4221     int		save_p_scs;
4222     int		retval = OK;
4223     int		incll;
4224     int		searchflags = flags_arg;
4225     int		valid;
4226 
4227     if ((pat = alloc(len + 7)) == NULL)
4228 	return FAIL;
4229 
4230     /* Put "\V" before the pattern to avoid that the special meaning of "."
4231      * and "~" causes trouble. */
4232     sprintf((char *)pat, vim_iswordp(ptr) ? "\\V\\<%.*s\\>" : "\\V%.*s",
4233 								    len, ptr);
4234     old_pos = curwin->w_cursor;
4235     save_p_ws = p_ws;
4236     save_p_scs = p_scs;
4237     p_ws = FALSE;	/* don't wrap around end of file now */
4238     p_scs = FALSE;	/* don't switch ignorecase off now */
4239 
4240     /*
4241      * With "gD" go to line 1.
4242      * With "gd" Search back for the start of the current function, then go
4243      * back until a blank line.  If this fails go to line 1.
4244      */
4245     if (!locally || !findpar(&incll, BACKWARD, 1L, '{', FALSE))
4246     {
4247 	setpcmark();			/* Set in findpar() otherwise */
4248 	curwin->w_cursor.lnum = 1;
4249 	par_pos = curwin->w_cursor;
4250     }
4251     else
4252     {
4253 	par_pos = curwin->w_cursor;
4254 	while (curwin->w_cursor.lnum > 1 && *skipwhite(ml_get_curline()) != NUL)
4255 	    --curwin->w_cursor.lnum;
4256     }
4257     curwin->w_cursor.col = 0;
4258 
4259     /* Search forward for the identifier, ignore comment lines. */
4260     CLEAR_POS(&found_pos);
4261     for (;;)
4262     {
4263 	t = searchit(curwin, curbuf, &curwin->w_cursor, NULL, FORWARD,
4264 		       pat, 1L, searchflags, RE_LAST, (linenr_T)0, NULL, NULL);
4265 	if (curwin->w_cursor.lnum >= old_pos.lnum)
4266 	    t = FAIL;	/* match after start is failure too */
4267 
4268 	if (thisblock && t != FAIL)
4269 	{
4270 	    pos_T	*pos;
4271 
4272 	    /* Check that the block the match is in doesn't end before the
4273 	     * position where we started the search from. */
4274 	    if ((pos = findmatchlimit(NULL, '}', FM_FORWARD,
4275 		     (int)(old_pos.lnum - curwin->w_cursor.lnum + 1))) != NULL
4276 		    && pos->lnum < old_pos.lnum)
4277 	    {
4278 		/* There can't be a useful match before the end of this block.
4279 		 * Skip to the end. */
4280 		curwin->w_cursor = *pos;
4281 		continue;
4282 	    }
4283 	}
4284 
4285 	if (t == FAIL)
4286 	{
4287 	    /* If we previously found a valid position, use it. */
4288 	    if (found_pos.lnum != 0)
4289 	    {
4290 		curwin->w_cursor = found_pos;
4291 		t = OK;
4292 	    }
4293 	    break;
4294 	}
4295 #ifdef FEAT_COMMENTS
4296 	if (get_leader_len(ml_get_curline(), NULL, FALSE, TRUE) > 0)
4297 	{
4298 	    /* Ignore this line, continue at start of next line. */
4299 	    ++curwin->w_cursor.lnum;
4300 	    curwin->w_cursor.col = 0;
4301 	    continue;
4302 	}
4303 #endif
4304 	valid = is_ident(ml_get_curline(), curwin->w_cursor.col);
4305 
4306 	/* If the current position is not a valid identifier and a previous
4307 	 * match is present, favor that one instead. */
4308 	if (!valid && found_pos.lnum != 0)
4309 	{
4310 	    curwin->w_cursor = found_pos;
4311 	    break;
4312 	}
4313 
4314 	/* Global search: use first valid match found */
4315 	if (valid && !locally)
4316 	    break;
4317 	if (valid && curwin->w_cursor.lnum >= par_pos.lnum)
4318 	{
4319 	    /* If we previously found a valid position, use it. */
4320 	    if (found_pos.lnum != 0)
4321 		curwin->w_cursor = found_pos;
4322 	    break;
4323 	}
4324 
4325 	/* For finding a local variable and the match is before the "{" or
4326 	 * inside a comment, continue searching.  For K&R style function
4327 	 * declarations this skips the function header without types. */
4328 	if (!valid)
4329 	    CLEAR_POS(&found_pos);
4330 	else
4331 	    found_pos = curwin->w_cursor;
4332 	/* Remove SEARCH_START from flags to avoid getting stuck at one
4333 	 * position. */
4334 	searchflags &= ~SEARCH_START;
4335     }
4336 
4337     if (t == FAIL)
4338     {
4339 	retval = FAIL;
4340 	curwin->w_cursor = old_pos;
4341     }
4342     else
4343     {
4344 	curwin->w_set_curswant = TRUE;
4345 	/* "n" searches forward now */
4346 	reset_search_dir();
4347     }
4348 
4349     vim_free(pat);
4350     p_ws = save_p_ws;
4351     p_scs = save_p_scs;
4352 
4353     return retval;
4354 }
4355 
4356 /*
4357  * Move 'dist' lines in direction 'dir', counting lines by *screen*
4358  * lines rather than lines in the file.
4359  * 'dist' must be positive.
4360  *
4361  * Return OK if able to move cursor, FAIL otherwise.
4362  */
4363     static int
4364 nv_screengo(oparg_T *oap, int dir, long dist)
4365 {
4366     int		linelen = linetabsize(ml_get_curline());
4367     int		retval = OK;
4368     int		atend = FALSE;
4369     int		n;
4370     int		col_off1;	/* margin offset for first screen line */
4371     int		col_off2;	/* margin offset for wrapped screen line */
4372     int		width1;		/* text width for first screen line */
4373     int		width2;		/* test width for wrapped screen line */
4374 
4375     oap->motion_type = MCHAR;
4376     oap->inclusive = (curwin->w_curswant == MAXCOL);
4377 
4378     col_off1 = curwin_col_off();
4379     col_off2 = col_off1 - curwin_col_off2();
4380     width1 = curwin->w_width - col_off1;
4381     width2 = curwin->w_width - col_off2;
4382     if (width2 == 0)
4383 	width2 = 1; /* avoid divide by zero */
4384 
4385     if (curwin->w_width != 0)
4386     {
4387       /*
4388        * Instead of sticking at the last character of the buffer line we
4389        * try to stick in the last column of the screen.
4390        */
4391       if (curwin->w_curswant == MAXCOL)
4392       {
4393 	atend = TRUE;
4394 	validate_virtcol();
4395 	if (width1 <= 0)
4396 	    curwin->w_curswant = 0;
4397 	else
4398 	{
4399 	    curwin->w_curswant = width1 - 1;
4400 	    if (curwin->w_virtcol > curwin->w_curswant)
4401 		curwin->w_curswant += ((curwin->w_virtcol
4402 			     - curwin->w_curswant - 1) / width2 + 1) * width2;
4403 	}
4404       }
4405       else
4406       {
4407 	if (linelen > width1)
4408 	    n = ((linelen - width1 - 1) / width2 + 1) * width2 + width1;
4409 	else
4410 	    n = width1;
4411 	if (curwin->w_curswant > (colnr_T)n + 1)
4412 	    curwin->w_curswant -= ((curwin->w_curswant - n) / width2 + 1)
4413 								     * width2;
4414       }
4415 
4416       while (dist--)
4417       {
4418 	if (dir == BACKWARD)
4419 	{
4420 	    if ((long)curwin->w_curswant >= width2)
4421 		/* move back within line */
4422 		curwin->w_curswant -= width2;
4423 	    else
4424 	    {
4425 		/* to previous line */
4426 		if (curwin->w_cursor.lnum == 1)
4427 		{
4428 		    retval = FAIL;
4429 		    break;
4430 		}
4431 		--curwin->w_cursor.lnum;
4432 #ifdef FEAT_FOLDING
4433 		/* Move to the start of a closed fold.  Don't do that when
4434 		 * 'foldopen' contains "all": it will open in a moment. */
4435 		if (!(fdo_flags & FDO_ALL))
4436 		    (void)hasFolding(curwin->w_cursor.lnum,
4437 						&curwin->w_cursor.lnum, NULL);
4438 #endif
4439 		linelen = linetabsize(ml_get_curline());
4440 		if (linelen > width1)
4441 		    curwin->w_curswant += (((linelen - width1 - 1) / width2)
4442 								+ 1) * width2;
4443 	    }
4444 	}
4445 	else /* dir == FORWARD */
4446 	{
4447 	    if (linelen > width1)
4448 		n = ((linelen - width1 - 1) / width2 + 1) * width2 + width1;
4449 	    else
4450 		n = width1;
4451 	    if (curwin->w_curswant + width2 < (colnr_T)n)
4452 		/* move forward within line */
4453 		curwin->w_curswant += width2;
4454 	    else
4455 	    {
4456 		/* to next line */
4457 #ifdef FEAT_FOLDING
4458 		/* Move to the end of a closed fold. */
4459 		(void)hasFolding(curwin->w_cursor.lnum, NULL,
4460 						      &curwin->w_cursor.lnum);
4461 #endif
4462 		if (curwin->w_cursor.lnum == curbuf->b_ml.ml_line_count)
4463 		{
4464 		    retval = FAIL;
4465 		    break;
4466 		}
4467 		curwin->w_cursor.lnum++;
4468 		curwin->w_curswant %= width2;
4469 		linelen = linetabsize(ml_get_curline());
4470 	    }
4471 	}
4472       }
4473     }
4474 
4475     if (virtual_active() && atend)
4476 	coladvance(MAXCOL);
4477     else
4478 	coladvance(curwin->w_curswant);
4479 
4480     if (curwin->w_cursor.col > 0 && curwin->w_p_wrap)
4481     {
4482 	colnr_T virtcol;
4483 
4484 	/*
4485 	 * Check for landing on a character that got split at the end of the
4486 	 * last line.  We want to advance a screenline, not end up in the same
4487 	 * screenline or move two screenlines.
4488 	 */
4489 	validate_virtcol();
4490 	virtcol = curwin->w_virtcol;
4491 #if defined(FEAT_LINEBREAK)
4492 	if (virtcol > (colnr_T)width1 && *p_sbr != NUL)
4493 	    virtcol -= vim_strsize(p_sbr);
4494 #endif
4495 
4496 	if (virtcol > curwin->w_curswant
4497 		&& (curwin->w_curswant < (colnr_T)width1
4498 		    ? (curwin->w_curswant > (colnr_T)width1 / 2)
4499 		    : ((curwin->w_curswant - width1) % width2
4500 						      > (colnr_T)width2 / 2)))
4501 	    --curwin->w_cursor.col;
4502     }
4503 
4504     if (atend)
4505 	curwin->w_curswant = MAXCOL;	    /* stick in the last column */
4506 
4507     return retval;
4508 }
4509 
4510 #ifdef FEAT_MOUSE
4511 /*
4512  * Mouse scroll wheel: Default action is to scroll three lines, or one page
4513  * when Shift or Ctrl is used.
4514  * K_MOUSEUP (cap->arg == 1) or K_MOUSEDOWN (cap->arg == 0) or
4515  * K_MOUSELEFT (cap->arg == -1) or K_MOUSERIGHT (cap->arg == -2)
4516  */
4517     static void
4518 nv_mousescroll(cmdarg_T *cap)
4519 {
4520     win_T *old_curwin = curwin, *wp;
4521 
4522     if (mouse_row >= 0 && mouse_col >= 0)
4523     {
4524 	int row, col;
4525 
4526 	row = mouse_row;
4527 	col = mouse_col;
4528 
4529 	/* find the window at the pointer coordinates */
4530 	wp = mouse_find_win(&row, &col, FIND_POPUP);
4531 	if (wp == NULL)
4532 	    return;
4533 #ifdef FEAT_TEXT_PROP
4534 	if (WIN_IS_POPUP(wp) && !wp->w_has_scrollbar)
4535 	    return;
4536 #endif
4537 	curwin = wp;
4538 	curbuf = curwin->w_buffer;
4539     }
4540 
4541     if (cap->arg == MSCR_UP || cap->arg == MSCR_DOWN)
4542     {
4543 # ifdef FEAT_TERMINAL
4544 	if (term_use_loop())
4545 	    /* This window is a terminal window, send the mouse event there.
4546 	     * Set "typed" to FALSE to avoid an endless loop. */
4547 	    send_keys_to_term(curbuf->b_term, cap->cmdchar, FALSE);
4548 	else
4549 # endif
4550 	if (mod_mask & (MOD_MASK_SHIFT | MOD_MASK_CTRL))
4551 	{
4552 	    (void)onepage(cap->arg ? FORWARD : BACKWARD, 1L);
4553 	}
4554 	else
4555 	{
4556 	    // Don't scroll more than half the window height.
4557 	    if (curwin->w_height < 6)
4558 	    {
4559 		cap->count1 = curwin->w_height / 2;
4560 		if (cap->count1 == 0)
4561 		    cap->count1 = 1;
4562 	    }
4563 	    else
4564 		cap->count1 = 3;
4565 	    cap->count0 = cap->count1;
4566 	    nv_scroll_line(cap);
4567 	}
4568 #ifdef FEAT_TEXT_PROP
4569 	if (WIN_IS_POPUP(curwin))
4570 	    popup_set_firstline(curwin);
4571 #endif
4572     }
4573 # ifdef FEAT_GUI
4574     else
4575     {
4576 	/* Horizontal scroll - only allowed when 'wrap' is disabled */
4577 	if (!curwin->w_p_wrap)
4578 	{
4579 	    int val, step = 6;
4580 
4581 	    if (mod_mask & (MOD_MASK_SHIFT | MOD_MASK_CTRL))
4582 		step = curwin->w_width;
4583 	    val = curwin->w_leftcol + (cap->arg == MSCR_RIGHT ? -step : +step);
4584 	    if (val < 0)
4585 		val = 0;
4586 
4587 	    gui_do_horiz_scroll(val, TRUE);
4588 	}
4589     }
4590 # endif
4591 # ifdef FEAT_SYN_HL
4592     if (curwin != old_curwin && curwin->w_p_cul)
4593 	redraw_for_cursorline(curwin);
4594 # endif
4595 
4596     curwin->w_redr_status = TRUE;
4597 
4598     curwin = old_curwin;
4599     curbuf = curwin->w_buffer;
4600 }
4601 
4602 /*
4603  * Mouse clicks and drags.
4604  */
4605     static void
4606 nv_mouse(cmdarg_T *cap)
4607 {
4608     (void)do_mouse(cap->oap, cap->cmdchar, BACKWARD, cap->count1, 0);
4609 }
4610 #endif
4611 
4612 /*
4613  * Handle CTRL-E and CTRL-Y commands: scroll a line up or down.
4614  * cap->arg must be TRUE for CTRL-E.
4615  */
4616     static void
4617 nv_scroll_line(cmdarg_T *cap)
4618 {
4619     if (!checkclearop(cap->oap))
4620 	scroll_redraw(cap->arg, cap->count1);
4621 }
4622 
4623 /*
4624  * Scroll "count" lines up or down, and redraw.
4625  */
4626     void
4627 scroll_redraw(int up, long count)
4628 {
4629     linenr_T	prev_topline = curwin->w_topline;
4630 #ifdef FEAT_DIFF
4631     int		prev_topfill = curwin->w_topfill;
4632 #endif
4633     linenr_T	prev_lnum = curwin->w_cursor.lnum;
4634 
4635     if (up)
4636 	scrollup(count, TRUE);
4637     else
4638 	scrolldown(count, TRUE);
4639     if (get_scrolloff_value())
4640     {
4641 	/* Adjust the cursor position for 'scrolloff'.  Mark w_topline as
4642 	 * valid, otherwise the screen jumps back at the end of the file. */
4643 	cursor_correct();
4644 	check_cursor_moved(curwin);
4645 	curwin->w_valid |= VALID_TOPLINE;
4646 
4647 	/* If moved back to where we were, at least move the cursor, otherwise
4648 	 * we get stuck at one position.  Don't move the cursor up if the
4649 	 * first line of the buffer is already on the screen */
4650 	while (curwin->w_topline == prev_topline
4651 #ifdef FEAT_DIFF
4652 		&& curwin->w_topfill == prev_topfill
4653 #endif
4654 		)
4655 	{
4656 	    if (up)
4657 	    {
4658 		if (curwin->w_cursor.lnum > prev_lnum
4659 			|| cursor_down(1L, FALSE) == FAIL)
4660 		    break;
4661 	    }
4662 	    else
4663 	    {
4664 		if (curwin->w_cursor.lnum < prev_lnum
4665 			|| prev_topline == 1L
4666 			|| cursor_up(1L, FALSE) == FAIL)
4667 		    break;
4668 	    }
4669 	    /* Mark w_topline as valid, otherwise the screen jumps back at the
4670 	     * end of the file. */
4671 	    check_cursor_moved(curwin);
4672 	    curwin->w_valid |= VALID_TOPLINE;
4673 	}
4674     }
4675     if (curwin->w_cursor.lnum != prev_lnum)
4676 	coladvance(curwin->w_curswant);
4677     redraw_later(VALID);
4678 }
4679 
4680 /*
4681  * Commands that start with "z".
4682  */
4683     static void
4684 nv_zet(cmdarg_T *cap)
4685 {
4686     long	n;
4687     colnr_T	col;
4688     int		nchar = cap->nchar;
4689 #ifdef FEAT_FOLDING
4690     long	old_fdl = curwin->w_p_fdl;
4691     int		old_fen = curwin->w_p_fen;
4692 #endif
4693 #ifdef FEAT_SPELL
4694     int		undo = FALSE;
4695 #endif
4696     long        siso = get_sidescrolloff_value();
4697 
4698     if (VIM_ISDIGIT(nchar))
4699     {
4700 	/*
4701 	 * "z123{nchar}": edit the count before obtaining {nchar}
4702 	 */
4703 	if (checkclearop(cap->oap))
4704 	    return;
4705 	n = nchar - '0';
4706 	for (;;)
4707 	{
4708 #ifdef USE_ON_FLY_SCROLL
4709 	    dont_scroll = TRUE;		/* disallow scrolling here */
4710 #endif
4711 	    ++no_mapping;
4712 	    ++allow_keys;   /* no mapping for nchar, but allow key codes */
4713 	    nchar = plain_vgetc();
4714 	    LANGMAP_ADJUST(nchar, TRUE);
4715 	    --no_mapping;
4716 	    --allow_keys;
4717 #ifdef FEAT_CMDL_INFO
4718 	    (void)add_to_showcmd(nchar);
4719 #endif
4720 	    if (nchar == K_DEL || nchar == K_KDEL)
4721 		n /= 10;
4722 	    else if (VIM_ISDIGIT(nchar))
4723 		n = n * 10 + (nchar - '0');
4724 	    else if (nchar == CAR)
4725 	    {
4726 #ifdef FEAT_GUI
4727 		need_mouse_correct = TRUE;
4728 #endif
4729 		win_setheight((int)n);
4730 		break;
4731 	    }
4732 	    else if (nchar == 'l'
4733 		    || nchar == 'h'
4734 		    || nchar == K_LEFT
4735 		    || nchar == K_RIGHT)
4736 	    {
4737 		cap->count1 = n ? n * cap->count1 : cap->count1;
4738 		goto dozet;
4739 	    }
4740 	    else
4741 	    {
4742 		clearopbeep(cap->oap);
4743 		break;
4744 	    }
4745 	}
4746 	cap->oap->op_type = OP_NOP;
4747 	return;
4748     }
4749 
4750 dozet:
4751     if (
4752 #ifdef FEAT_FOLDING
4753 	    /* "zf" and "zF" are always an operator, "zd", "zo", "zO", "zc"
4754 	     * and "zC" only in Visual mode.  "zj" and "zk" are motion
4755 	     * commands. */
4756 	    cap->nchar != 'f' && cap->nchar != 'F'
4757 	    && !(VIsual_active && vim_strchr((char_u *)"dcCoO", cap->nchar))
4758 	    && cap->nchar != 'j' && cap->nchar != 'k'
4759 	    &&
4760 #endif
4761 	    checkclearop(cap->oap))
4762 	return;
4763 
4764     /*
4765      * For "z+", "z<CR>", "zt", "z.", "zz", "z^", "z-", "zb":
4766      * If line number given, set cursor.
4767      */
4768     if ((vim_strchr((char_u *)"+\r\nt.z^-b", nchar) != NULL)
4769 	    && cap->count0
4770 	    && cap->count0 != curwin->w_cursor.lnum)
4771     {
4772 	setpcmark();
4773 	if (cap->count0 > curbuf->b_ml.ml_line_count)
4774 	    curwin->w_cursor.lnum = curbuf->b_ml.ml_line_count;
4775 	else
4776 	    curwin->w_cursor.lnum = cap->count0;
4777 	check_cursor_col();
4778     }
4779 
4780     switch (nchar)
4781     {
4782 		/* "z+", "z<CR>" and "zt": put cursor at top of screen */
4783     case '+':
4784 		if (cap->count0 == 0)
4785 		{
4786 		    /* No count given: put cursor at the line below screen */
4787 		    validate_botline();	/* make sure w_botline is valid */
4788 		    if (curwin->w_botline > curbuf->b_ml.ml_line_count)
4789 			curwin->w_cursor.lnum = curbuf->b_ml.ml_line_count;
4790 		    else
4791 			curwin->w_cursor.lnum = curwin->w_botline;
4792 		}
4793 		/* FALLTHROUGH */
4794     case NL:
4795     case CAR:
4796     case K_KENTER:
4797 		beginline(BL_WHITE | BL_FIX);
4798 		/* FALLTHROUGH */
4799 
4800     case 't':	scroll_cursor_top(0, TRUE);
4801 		redraw_later(VALID);
4802 		set_fraction(curwin);
4803 		break;
4804 
4805 		/* "z." and "zz": put cursor in middle of screen */
4806     case '.':	beginline(BL_WHITE | BL_FIX);
4807 		/* FALLTHROUGH */
4808 
4809     case 'z':	scroll_cursor_halfway(TRUE);
4810 		redraw_later(VALID);
4811 		set_fraction(curwin);
4812 		break;
4813 
4814 		/* "z^", "z-" and "zb": put cursor at bottom of screen */
4815     case '^':	/* Strange Vi behavior: <count>z^ finds line at top of window
4816 		 * when <count> is at bottom of window, and puts that one at
4817 		 * bottom of window. */
4818 		if (cap->count0 != 0)
4819 		{
4820 		    scroll_cursor_bot(0, TRUE);
4821 		    curwin->w_cursor.lnum = curwin->w_topline;
4822 		}
4823 		else if (curwin->w_topline == 1)
4824 		    curwin->w_cursor.lnum = 1;
4825 		else
4826 		    curwin->w_cursor.lnum = curwin->w_topline - 1;
4827 		/* FALLTHROUGH */
4828     case '-':
4829 		beginline(BL_WHITE | BL_FIX);
4830 		/* FALLTHROUGH */
4831 
4832     case 'b':	scroll_cursor_bot(0, TRUE);
4833 		redraw_later(VALID);
4834 		set_fraction(curwin);
4835 		break;
4836 
4837 		/* "zH" - scroll screen right half-page */
4838     case 'H':
4839 		cap->count1 *= curwin->w_width / 2;
4840 		/* FALLTHROUGH */
4841 
4842 		/* "zh" - scroll screen to the right */
4843     case 'h':
4844     case K_LEFT:
4845 		if (!curwin->w_p_wrap)
4846 		{
4847 		    if ((colnr_T)cap->count1 > curwin->w_leftcol)
4848 			curwin->w_leftcol = 0;
4849 		    else
4850 			curwin->w_leftcol -= (colnr_T)cap->count1;
4851 		    leftcol_changed();
4852 		}
4853 		break;
4854 
4855 		/* "zL" - scroll screen left half-page */
4856     case 'L':	cap->count1 *= curwin->w_width / 2;
4857 		/* FALLTHROUGH */
4858 
4859 		/* "zl" - scroll screen to the left */
4860     case 'l':
4861     case K_RIGHT:
4862 		if (!curwin->w_p_wrap)
4863 		{
4864 		    /* scroll the window left */
4865 		    curwin->w_leftcol += (colnr_T)cap->count1;
4866 		    leftcol_changed();
4867 		}
4868 		break;
4869 
4870 		/* "zs" - scroll screen, cursor at the start */
4871     case 's':	if (!curwin->w_p_wrap)
4872 		{
4873 #ifdef FEAT_FOLDING
4874 		    if (hasFolding(curwin->w_cursor.lnum, NULL, NULL))
4875 			col = 0;	/* like the cursor is in col 0 */
4876 		    else
4877 #endif
4878 		    getvcol(curwin, &curwin->w_cursor, &col, NULL, NULL);
4879 		    if ((long)col > siso)
4880 			col -= siso;
4881 		    else
4882 			col = 0;
4883 		    if (curwin->w_leftcol != col)
4884 		    {
4885 			curwin->w_leftcol = col;
4886 			redraw_later(NOT_VALID);
4887 		    }
4888 		}
4889 		break;
4890 
4891 		/* "ze" - scroll screen, cursor at the end */
4892     case 'e':	if (!curwin->w_p_wrap)
4893 		{
4894 #ifdef FEAT_FOLDING
4895 		    if (hasFolding(curwin->w_cursor.lnum, NULL, NULL))
4896 			col = 0;	/* like the cursor is in col 0 */
4897 		    else
4898 #endif
4899 		    getvcol(curwin, &curwin->w_cursor, NULL, NULL, &col);
4900 		    n = curwin->w_width - curwin_col_off();
4901 		    if ((long)col + siso < n)
4902 			col = 0;
4903 		    else
4904 			col = col + siso - n + 1;
4905 		    if (curwin->w_leftcol != col)
4906 		    {
4907 			curwin->w_leftcol = col;
4908 			redraw_later(NOT_VALID);
4909 		    }
4910 		}
4911 		break;
4912 
4913 #ifdef FEAT_FOLDING
4914 		/* "zF": create fold command */
4915 		/* "zf": create fold operator */
4916     case 'F':
4917     case 'f':   if (foldManualAllowed(TRUE))
4918 		{
4919 		    cap->nchar = 'f';
4920 		    nv_operator(cap);
4921 		    curwin->w_p_fen = TRUE;
4922 
4923 		    /* "zF" is like "zfzf" */
4924 		    if (nchar == 'F' && cap->oap->op_type == OP_FOLD)
4925 		    {
4926 			nv_operator(cap);
4927 			finish_op = TRUE;
4928 		    }
4929 		}
4930 		else
4931 		    clearopbeep(cap->oap);
4932 		break;
4933 
4934 		/* "zd": delete fold at cursor */
4935 		/* "zD": delete fold at cursor recursively */
4936     case 'd':
4937     case 'D':	if (foldManualAllowed(FALSE))
4938 		{
4939 		    if (VIsual_active)
4940 			nv_operator(cap);
4941 		    else
4942 			deleteFold(curwin->w_cursor.lnum,
4943 				  curwin->w_cursor.lnum, nchar == 'D', FALSE);
4944 		}
4945 		break;
4946 
4947 		/* "zE": erase all folds */
4948     case 'E':	if (foldmethodIsManual(curwin))
4949 		{
4950 		    clearFolding(curwin);
4951 		    changed_window_setting();
4952 		}
4953 		else if (foldmethodIsMarker(curwin))
4954 		    deleteFold((linenr_T)1, curbuf->b_ml.ml_line_count,
4955 								 TRUE, FALSE);
4956 		else
4957 		    emsg(_("E352: Cannot erase folds with current 'foldmethod'"));
4958 		break;
4959 
4960 		/* "zn": fold none: reset 'foldenable' */
4961     case 'n':	curwin->w_p_fen = FALSE;
4962 		break;
4963 
4964 		/* "zN": fold Normal: set 'foldenable' */
4965     case 'N':	curwin->w_p_fen = TRUE;
4966 		break;
4967 
4968 		/* "zi": invert folding: toggle 'foldenable' */
4969     case 'i':	curwin->w_p_fen = !curwin->w_p_fen;
4970 		break;
4971 
4972 		/* "za": open closed fold or close open fold at cursor */
4973     case 'a':	if (hasFolding(curwin->w_cursor.lnum, NULL, NULL))
4974 		    openFold(curwin->w_cursor.lnum, cap->count1);
4975 		else
4976 		{
4977 		    closeFold(curwin->w_cursor.lnum, cap->count1);
4978 		    curwin->w_p_fen = TRUE;
4979 		}
4980 		break;
4981 
4982 		/* "zA": open fold at cursor recursively */
4983     case 'A':	if (hasFolding(curwin->w_cursor.lnum, NULL, NULL))
4984 		    openFoldRecurse(curwin->w_cursor.lnum);
4985 		else
4986 		{
4987 		    closeFoldRecurse(curwin->w_cursor.lnum);
4988 		    curwin->w_p_fen = TRUE;
4989 		}
4990 		break;
4991 
4992 		/* "zo": open fold at cursor or Visual area */
4993     case 'o':	if (VIsual_active)
4994 		    nv_operator(cap);
4995 		else
4996 		    openFold(curwin->w_cursor.lnum, cap->count1);
4997 		break;
4998 
4999 		/* "zO": open fold recursively */
5000     case 'O':	if (VIsual_active)
5001 		    nv_operator(cap);
5002 		else
5003 		    openFoldRecurse(curwin->w_cursor.lnum);
5004 		break;
5005 
5006 		/* "zc": close fold at cursor or Visual area */
5007     case 'c':	if (VIsual_active)
5008 		    nv_operator(cap);
5009 		else
5010 		    closeFold(curwin->w_cursor.lnum, cap->count1);
5011 		curwin->w_p_fen = TRUE;
5012 		break;
5013 
5014 		/* "zC": close fold recursively */
5015     case 'C':	if (VIsual_active)
5016 		    nv_operator(cap);
5017 		else
5018 		    closeFoldRecurse(curwin->w_cursor.lnum);
5019 		curwin->w_p_fen = TRUE;
5020 		break;
5021 
5022 		/* "zv": open folds at the cursor */
5023     case 'v':	foldOpenCursor();
5024 		break;
5025 
5026 		/* "zx": re-apply 'foldlevel' and open folds at the cursor */
5027     case 'x':	curwin->w_p_fen = TRUE;
5028 		curwin->w_foldinvalid = TRUE;	/* recompute folds */
5029 		newFoldLevel();			/* update right now */
5030 		foldOpenCursor();
5031 		break;
5032 
5033 		/* "zX": undo manual opens/closes, re-apply 'foldlevel' */
5034     case 'X':	curwin->w_p_fen = TRUE;
5035 		curwin->w_foldinvalid = TRUE;	/* recompute folds */
5036 		old_fdl = -1;			/* force an update */
5037 		break;
5038 
5039 		/* "zm": fold more */
5040     case 'm':	if (curwin->w_p_fdl > 0)
5041 		{
5042 		    curwin->w_p_fdl -= cap->count1;
5043 		    if (curwin->w_p_fdl < 0)
5044 			curwin->w_p_fdl = 0;
5045 		}
5046 		old_fdl = -1;		/* force an update */
5047 		curwin->w_p_fen = TRUE;
5048 		break;
5049 
5050 		/* "zM": close all folds */
5051     case 'M':	curwin->w_p_fdl = 0;
5052 		old_fdl = -1;		/* force an update */
5053 		curwin->w_p_fen = TRUE;
5054 		break;
5055 
5056 		/* "zr": reduce folding */
5057     case 'r':	curwin->w_p_fdl += cap->count1;
5058 		{
5059 		    int d = getDeepestNesting();
5060 
5061 		    if (curwin->w_p_fdl >= d)
5062 			curwin->w_p_fdl = d;
5063 		}
5064 		break;
5065 
5066 		/* "zR": open all folds */
5067     case 'R':	curwin->w_p_fdl = getDeepestNesting();
5068 		old_fdl = -1;		/* force an update */
5069 		break;
5070 
5071     case 'j':	/* "zj" move to next fold downwards */
5072     case 'k':	/* "zk" move to next fold upwards */
5073 		if (foldMoveTo(TRUE, nchar == 'j' ? FORWARD : BACKWARD,
5074 							  cap->count1) == FAIL)
5075 		    clearopbeep(cap->oap);
5076 		break;
5077 
5078 #endif /* FEAT_FOLDING */
5079 
5080 #ifdef FEAT_SPELL
5081     case 'u':	/* "zug" and "zuw": undo "zg" and "zw" */
5082 		++no_mapping;
5083 		++allow_keys;   /* no mapping for nchar, but allow key codes */
5084 		nchar = plain_vgetc();
5085 		LANGMAP_ADJUST(nchar, TRUE);
5086 		--no_mapping;
5087 		--allow_keys;
5088 #ifdef FEAT_CMDL_INFO
5089 		(void)add_to_showcmd(nchar);
5090 #endif
5091 		if (vim_strchr((char_u *)"gGwW", nchar) == NULL)
5092 		{
5093 		    clearopbeep(cap->oap);
5094 		    break;
5095 		}
5096 		undo = TRUE;
5097 		/* FALLTHROUGH */
5098 
5099     case 'g':	/* "zg": add good word to word list */
5100     case 'w':	/* "zw": add wrong word to word list */
5101     case 'G':	/* "zG": add good word to temp word list */
5102     case 'W':	/* "zW": add wrong word to temp word list */
5103 		{
5104 		    char_u  *ptr = NULL;
5105 		    int	    len;
5106 
5107 		    if (checkclearop(cap->oap))
5108 			break;
5109 		    if (VIsual_active && get_visual_text(cap, &ptr, &len)
5110 								      == FAIL)
5111 			return;
5112 		    if (ptr == NULL)
5113 		    {
5114 			pos_T	pos = curwin->w_cursor;
5115 
5116 			/* Find bad word under the cursor.  When 'spell' is
5117 			 * off this fails and find_ident_under_cursor() is
5118 			 * used below. */
5119 			emsg_off++;
5120 			len = spell_move_to(curwin, FORWARD, TRUE, TRUE, NULL);
5121 			emsg_off--;
5122 			if (len != 0 && curwin->w_cursor.col <= pos.col)
5123 			    ptr = ml_get_pos(&curwin->w_cursor);
5124 			curwin->w_cursor = pos;
5125 		    }
5126 
5127 		    if (ptr == NULL && (len = find_ident_under_cursor(&ptr,
5128 							    FIND_IDENT)) == 0)
5129 			return;
5130 		    spell_add_word(ptr, len, nchar == 'w' || nchar == 'W',
5131 					    (nchar == 'G' || nchar == 'W')
5132 						       ? 0 : (int)cap->count1,
5133 					    undo);
5134 		}
5135 		break;
5136 
5137     case '=':	/* "z=": suggestions for a badly spelled word  */
5138 		if (!checkclearop(cap->oap))
5139 		    spell_suggest((int)cap->count0);
5140 		break;
5141 #endif
5142 
5143     default:	clearopbeep(cap->oap);
5144     }
5145 
5146 #ifdef FEAT_FOLDING
5147     /* Redraw when 'foldenable' changed */
5148     if (old_fen != curwin->w_p_fen)
5149     {
5150 # ifdef FEAT_DIFF
5151 	win_T	    *wp;
5152 
5153 	if (foldmethodIsDiff(curwin) && curwin->w_p_scb)
5154 	{
5155 	    /* Adjust 'foldenable' in diff-synced windows. */
5156 	    FOR_ALL_WINDOWS(wp)
5157 	    {
5158 		if (wp != curwin && foldmethodIsDiff(wp) && wp->w_p_scb)
5159 		{
5160 		    wp->w_p_fen = curwin->w_p_fen;
5161 		    changed_window_setting_win(wp);
5162 		}
5163 	    }
5164 	}
5165 # endif
5166 	changed_window_setting();
5167     }
5168 
5169     /* Redraw when 'foldlevel' changed. */
5170     if (old_fdl != curwin->w_p_fdl)
5171 	newFoldLevel();
5172 #endif
5173 }
5174 
5175 #ifdef FEAT_GUI
5176 /*
5177  * Vertical scrollbar movement.
5178  */
5179     static void
5180 nv_ver_scrollbar(cmdarg_T *cap)
5181 {
5182     if (cap->oap->op_type != OP_NOP)
5183 	clearopbeep(cap->oap);
5184 
5185     /* Even if an operator was pending, we still want to scroll */
5186     gui_do_scroll();
5187 }
5188 
5189 /*
5190  * Horizontal scrollbar movement.
5191  */
5192     static void
5193 nv_hor_scrollbar(cmdarg_T *cap)
5194 {
5195     if (cap->oap->op_type != OP_NOP)
5196 	clearopbeep(cap->oap);
5197 
5198     /* Even if an operator was pending, we still want to scroll */
5199     gui_do_horiz_scroll(scrollbar_value, FALSE);
5200 }
5201 #endif
5202 
5203 #if defined(FEAT_GUI_TABLINE) || defined(PROTO)
5204 /*
5205  * Click in GUI tab.
5206  */
5207     static void
5208 nv_tabline(cmdarg_T *cap)
5209 {
5210     if (cap->oap->op_type != OP_NOP)
5211 	clearopbeep(cap->oap);
5212 
5213     /* Even if an operator was pending, we still want to jump tabs. */
5214     goto_tabpage(current_tab);
5215 }
5216 
5217 /*
5218  * Selected item in tab line menu.
5219  */
5220     static void
5221 nv_tabmenu(cmdarg_T *cap)
5222 {
5223     if (cap->oap->op_type != OP_NOP)
5224 	clearopbeep(cap->oap);
5225 
5226     /* Even if an operator was pending, we still want to jump tabs. */
5227     handle_tabmenu();
5228 }
5229 
5230 /*
5231  * Handle selecting an item of the GUI tab line menu.
5232  * Used in Normal and Insert mode.
5233  */
5234     void
5235 handle_tabmenu(void)
5236 {
5237     switch (current_tabmenu)
5238     {
5239 	case TABLINE_MENU_CLOSE:
5240 	    if (current_tab == 0)
5241 		do_cmdline_cmd((char_u *)"tabclose");
5242 	    else
5243 	    {
5244 		vim_snprintf((char *)IObuff, IOSIZE, "tabclose %d",
5245 								 current_tab);
5246 		do_cmdline_cmd(IObuff);
5247 	    }
5248 	    break;
5249 
5250 	case TABLINE_MENU_NEW:
5251 	    if (current_tab == 0)
5252 		do_cmdline_cmd((char_u *)"$tabnew");
5253 	    else
5254 	    {
5255 		vim_snprintf((char *)IObuff, IOSIZE, "%dtabnew",
5256 							     current_tab - 1);
5257 		do_cmdline_cmd(IObuff);
5258 	    }
5259 	    break;
5260 
5261 	case TABLINE_MENU_OPEN:
5262 	    if (current_tab == 0)
5263 		do_cmdline_cmd((char_u *)"browse $tabnew");
5264 	    else
5265 	    {
5266 		vim_snprintf((char *)IObuff, IOSIZE, "browse %dtabnew",
5267 							     current_tab - 1);
5268 		do_cmdline_cmd(IObuff);
5269 	    }
5270 	    break;
5271     }
5272 }
5273 #endif
5274 
5275 /*
5276  * "Q" command.
5277  */
5278     static void
5279 nv_exmode(cmdarg_T *cap)
5280 {
5281     /*
5282      * Ignore 'Q' in Visual mode, just give a beep.
5283      */
5284     if (VIsual_active)
5285 	vim_beep(BO_EX);
5286     else if (!checkclearop(cap->oap))
5287 	do_exmode(FALSE);
5288 }
5289 
5290 /*
5291  * Handle a ":" command.
5292  */
5293     static void
5294 nv_colon(cmdarg_T *cap)
5295 {
5296     int	    old_p_im;
5297     int	    cmd_result;
5298 
5299     if (VIsual_active)
5300 	nv_operator(cap);
5301     else
5302     {
5303 	if (cap->oap->op_type != OP_NOP)
5304 	{
5305 	    /* Using ":" as a movement is characterwise exclusive. */
5306 	    cap->oap->motion_type = MCHAR;
5307 	    cap->oap->inclusive = FALSE;
5308 	}
5309 	else if (cap->count0)
5310 	{
5311 	    /* translate "count:" into ":.,.+(count - 1)" */
5312 	    stuffcharReadbuff('.');
5313 	    if (cap->count0 > 1)
5314 	    {
5315 		stuffReadbuff((char_u *)",.+");
5316 		stuffnumReadbuff((long)cap->count0 - 1L);
5317 	    }
5318 	}
5319 
5320 	/* When typing, don't type below an old message */
5321 	if (KeyTyped)
5322 	    compute_cmdrow();
5323 
5324 	old_p_im = p_im;
5325 
5326 	/* get a command line and execute it */
5327 	cmd_result = do_cmdline(NULL, getexline, NULL,
5328 			    cap->oap->op_type != OP_NOP ? DOCMD_KEEPLINE : 0);
5329 
5330 	/* If 'insertmode' changed, enter or exit Insert mode */
5331 	if (p_im != old_p_im)
5332 	{
5333 	    if (p_im)
5334 		restart_edit = 'i';
5335 	    else
5336 		restart_edit = 0;
5337 	}
5338 
5339 	if (cmd_result == FAIL)
5340 	    /* The Ex command failed, do not execute the operator. */
5341 	    clearop(cap->oap);
5342 	else if (cap->oap->op_type != OP_NOP
5343 		&& (cap->oap->start.lnum > curbuf->b_ml.ml_line_count
5344 		    || cap->oap->start.col >
5345 			       (colnr_T)STRLEN(ml_get(cap->oap->start.lnum))
5346 		    || did_emsg
5347 		    ))
5348 	    /* The start of the operator has become invalid by the Ex command.
5349 	     */
5350 	    clearopbeep(cap->oap);
5351     }
5352 }
5353 
5354 /*
5355  * Handle CTRL-G command.
5356  */
5357     static void
5358 nv_ctrlg(cmdarg_T *cap)
5359 {
5360     if (VIsual_active)	/* toggle Selection/Visual mode */
5361     {
5362 	VIsual_select = !VIsual_select;
5363 	showmode();
5364     }
5365     else if (!checkclearop(cap->oap))
5366 	/* print full name if count given or :cd used */
5367 	fileinfo((int)cap->count0, FALSE, TRUE);
5368 }
5369 
5370 /*
5371  * Handle CTRL-H <Backspace> command.
5372  */
5373     static void
5374 nv_ctrlh(cmdarg_T *cap)
5375 {
5376     if (VIsual_active && VIsual_select)
5377     {
5378 	cap->cmdchar = 'x';	/* BS key behaves like 'x' in Select mode */
5379 	v_visop(cap);
5380     }
5381     else
5382 	nv_left(cap);
5383 }
5384 
5385 /*
5386  * CTRL-L: clear screen and redraw.
5387  */
5388     static void
5389 nv_clear(cmdarg_T *cap)
5390 {
5391     if (!checkclearop(cap->oap))
5392     {
5393 #if defined(__BEOS__) && !USE_THREAD_FOR_INPUT_WITH_TIMEOUT
5394 	/*
5395 	 * Right now, the BeBox doesn't seem to have an easy way to detect
5396 	 * window resizing, so we cheat and make the user detect it
5397 	 * manually with CTRL-L instead
5398 	 */
5399 	ui_get_shellsize();
5400 #endif
5401 #ifdef FEAT_SYN_HL
5402 	/* Clear all syntax states to force resyncing. */
5403 	syn_stack_free_all(curwin->w_s);
5404 # ifdef FEAT_RELTIME
5405 	{
5406 	    win_T *wp;
5407 
5408 	    FOR_ALL_WINDOWS(wp)
5409 		wp->w_s->b_syn_slow = FALSE;
5410 	}
5411 # endif
5412 #endif
5413 	redraw_later(CLEAR);
5414 #if defined(MSWIN) && (!defined(FEAT_GUI_MSWIN) || defined(VIMDLL))
5415 # ifdef VIMDLL
5416 	if (!gui.in_use)
5417 # endif
5418 	    resize_console_buf();
5419 #endif
5420     }
5421 }
5422 
5423 /*
5424  * CTRL-O: In Select mode: switch to Visual mode for one command.
5425  * Otherwise: Go to older pcmark.
5426  */
5427     static void
5428 nv_ctrlo(cmdarg_T *cap)
5429 {
5430     if (VIsual_active && VIsual_select)
5431     {
5432 	VIsual_select = FALSE;
5433 	showmode();
5434 	restart_VIsual_select = 2;	/* restart Select mode later */
5435     }
5436     else
5437     {
5438 	cap->count1 = -cap->count1;
5439 	nv_pcmark(cap);
5440     }
5441 }
5442 
5443 /*
5444  * CTRL-^ command, short for ":e #".  Works even when the alternate buffer is
5445  * not named.
5446  */
5447     static void
5448 nv_hat(cmdarg_T *cap)
5449 {
5450     if (!checkclearopq(cap->oap))
5451 	(void)buflist_getfile((int)cap->count0, (linenr_T)0,
5452 						GETF_SETMARK|GETF_ALT, FALSE);
5453 }
5454 
5455 /*
5456  * "Z" commands.
5457  */
5458     static void
5459 nv_Zet(cmdarg_T *cap)
5460 {
5461     if (!checkclearopq(cap->oap))
5462     {
5463 	switch (cap->nchar)
5464 	{
5465 			/* "ZZ": equivalent to ":x". */
5466 	    case 'Z':	do_cmdline_cmd((char_u *)"x");
5467 			break;
5468 
5469 			/* "ZQ": equivalent to ":q!" (Elvis compatible). */
5470 	    case 'Q':	do_cmdline_cmd((char_u *)"q!");
5471 			break;
5472 
5473 	    default:	clearopbeep(cap->oap);
5474 	}
5475     }
5476 }
5477 
5478 /*
5479  * Call nv_ident() as if "c1" was used, with "c2" as next character.
5480  */
5481     void
5482 do_nv_ident(int c1, int c2)
5483 {
5484     oparg_T	oa;
5485     cmdarg_T	ca;
5486 
5487     clear_oparg(&oa);
5488     vim_memset(&ca, 0, sizeof(ca));
5489     ca.oap = &oa;
5490     ca.cmdchar = c1;
5491     ca.nchar = c2;
5492     nv_ident(&ca);
5493 }
5494 
5495 /*
5496  * Handle the commands that use the word under the cursor.
5497  * [g] CTRL-]	:ta to current identifier
5498  * [g] 'K'	run program for current identifier
5499  * [g] '*'	/ to current identifier or string
5500  * [g] '#'	? to current identifier or string
5501  *  g  ']'	:tselect for current identifier
5502  */
5503     static void
5504 nv_ident(cmdarg_T *cap)
5505 {
5506     char_u	*ptr = NULL;
5507     char_u	*buf;
5508     unsigned	buflen;
5509     char_u	*newbuf;
5510     char_u	*p;
5511     char_u	*kp;		/* value of 'keywordprg' */
5512     int		kp_help;	/* 'keywordprg' is ":he" */
5513     int		kp_ex;		/* 'keywordprg' starts with ":" */
5514     int		n = 0;		/* init for GCC */
5515     int		cmdchar;
5516     int		g_cmd;		/* "g" command */
5517     int		tag_cmd = FALSE;
5518     char_u	*aux_ptr;
5519     int		isman;
5520     int		isman_s;
5521 
5522     if (cap->cmdchar == 'g')	/* "g*", "g#", "g]" and "gCTRL-]" */
5523     {
5524 	cmdchar = cap->nchar;
5525 	g_cmd = TRUE;
5526     }
5527     else
5528     {
5529 	cmdchar = cap->cmdchar;
5530 	g_cmd = FALSE;
5531     }
5532 
5533     if (cmdchar == POUND)	/* the pound sign, '#' for English keyboards */
5534 	cmdchar = '#';
5535 
5536     /*
5537      * The "]", "CTRL-]" and "K" commands accept an argument in Visual mode.
5538      */
5539     if (cmdchar == ']' || cmdchar == Ctrl_RSB || cmdchar == 'K')
5540     {
5541 	if (VIsual_active && get_visual_text(cap, &ptr, &n) == FAIL)
5542 	    return;
5543 	if (checkclearopq(cap->oap))
5544 	    return;
5545     }
5546 
5547     if (ptr == NULL && (n = find_ident_under_cursor(&ptr,
5548 		    (cmdchar == '*' || cmdchar == '#')
5549 				 ? FIND_IDENT|FIND_STRING : FIND_IDENT)) == 0)
5550     {
5551 	clearop(cap->oap);
5552 	return;
5553     }
5554 
5555     /* Allocate buffer to put the command in.  Inserting backslashes can
5556      * double the length of the word.  p_kp / curbuf->b_p_kp could be added
5557      * and some numbers. */
5558     kp = (*curbuf->b_p_kp == NUL ? p_kp : curbuf->b_p_kp);
5559     kp_help = (*kp == NUL || STRCMP(kp, ":he") == 0
5560 						 || STRCMP(kp, ":help") == 0);
5561     if (kp_help && *skipwhite(ptr) == NUL)
5562     {
5563 	emsg(_(e_noident));	 /* found white space only */
5564 	return;
5565     }
5566     kp_ex = (*kp == ':');
5567     buflen = (unsigned)(n * 2 + 30 + STRLEN(kp));
5568     buf = alloc(buflen);
5569     if (buf == NULL)
5570 	return;
5571     buf[0] = NUL;
5572 
5573     switch (cmdchar)
5574     {
5575 	case '*':
5576 	case '#':
5577 	    /*
5578 	     * Put cursor at start of word, makes search skip the word
5579 	     * under the cursor.
5580 	     * Call setpcmark() first, so "*``" puts the cursor back where
5581 	     * it was.
5582 	     */
5583 	    setpcmark();
5584 	    curwin->w_cursor.col = (colnr_T) (ptr - ml_get_curline());
5585 
5586 	    if (!g_cmd && vim_iswordp(ptr))
5587 		STRCPY(buf, "\\<");
5588 	    no_smartcase = TRUE;	/* don't use 'smartcase' now */
5589 	    break;
5590 
5591 	case 'K':
5592 	    if (kp_help)
5593 		STRCPY(buf, "he! ");
5594 	    else if (kp_ex)
5595 	    {
5596 		if (cap->count0 != 0)
5597 		    vim_snprintf((char *)buf, buflen, "%s %ld",
5598 							     kp, cap->count0);
5599 		else
5600 		    STRCPY(buf, kp);
5601 		STRCAT(buf, " ");
5602 	    }
5603 	    else
5604 	    {
5605 		/* An external command will probably use an argument starting
5606 		 * with "-" as an option.  To avoid trouble we skip the "-". */
5607 		while (*ptr == '-' && n > 0)
5608 		{
5609 		    ++ptr;
5610 		    --n;
5611 		}
5612 		if (n == 0)
5613 		{
5614 		    emsg(_(e_noident));	 /* found dashes only */
5615 		    vim_free(buf);
5616 		    return;
5617 		}
5618 
5619 		/* When a count is given, turn it into a range.  Is this
5620 		 * really what we want? */
5621 		isman = (STRCMP(kp, "man") == 0);
5622 		isman_s = (STRCMP(kp, "man -s") == 0);
5623 		if (cap->count0 != 0 && !(isman || isman_s))
5624 		    sprintf((char *)buf, ".,.+%ld", cap->count0 - 1);
5625 
5626 		STRCAT(buf, "! ");
5627 		if (cap->count0 == 0 && isman_s)
5628 		    STRCAT(buf, "man");
5629 		else
5630 		    STRCAT(buf, kp);
5631 		STRCAT(buf, " ");
5632 		if (cap->count0 != 0 && (isman || isman_s))
5633 		{
5634 		    sprintf((char *)buf + STRLEN(buf), "%ld", cap->count0);
5635 		    STRCAT(buf, " ");
5636 		}
5637 	    }
5638 	    break;
5639 
5640 	case ']':
5641 	    tag_cmd = TRUE;
5642 #ifdef FEAT_CSCOPE
5643 	    if (p_cst)
5644 		STRCPY(buf, "cstag ");
5645 	    else
5646 #endif
5647 		STRCPY(buf, "ts ");
5648 	    break;
5649 
5650 	default:
5651 	    tag_cmd = TRUE;
5652 	    if (curbuf->b_help)
5653 		STRCPY(buf, "he! ");
5654 	    else
5655 	    {
5656 		if (g_cmd)
5657 		    STRCPY(buf, "tj ");
5658 		else
5659 		    sprintf((char *)buf, "%ldta ", cap->count0);
5660 	    }
5661     }
5662 
5663     /*
5664      * Now grab the chars in the identifier
5665      */
5666     if (cmdchar == 'K' && !kp_help)
5667     {
5668 	ptr = vim_strnsave(ptr, n);
5669 	if (kp_ex)
5670 	    /* Escape the argument properly for an Ex command */
5671 	    p = vim_strsave_fnameescape(ptr, FALSE);
5672 	else
5673 	    /* Escape the argument properly for a shell command */
5674 	    p = vim_strsave_shellescape(ptr, TRUE, TRUE);
5675 	vim_free(ptr);
5676 	if (p == NULL)
5677 	{
5678 	    vim_free(buf);
5679 	    return;
5680 	}
5681 	newbuf = vim_realloc(buf, STRLEN(buf) + STRLEN(p) + 1);
5682 	if (newbuf == NULL)
5683 	{
5684 	    vim_free(buf);
5685 	    vim_free(p);
5686 	    return;
5687 	}
5688 	buf = newbuf;
5689 	STRCAT(buf, p);
5690 	vim_free(p);
5691     }
5692     else
5693     {
5694 	if (cmdchar == '*')
5695 	    aux_ptr = (char_u *)(p_magic ? "/.*~[^$\\" : "/^$\\");
5696 	else if (cmdchar == '#')
5697 	    aux_ptr = (char_u *)(p_magic ? "/?.*~[^$\\" : "/?^$\\");
5698 	else if (tag_cmd)
5699 	{
5700 	    if (curbuf->b_help)
5701 		/* ":help" handles unescaped argument */
5702 		aux_ptr = (char_u *)"";
5703 	    else
5704 		aux_ptr = (char_u *)"\\|\"\n[";
5705 	}
5706 	else
5707 	    aux_ptr = (char_u *)"\\|\"\n*?[";
5708 
5709 	p = buf + STRLEN(buf);
5710 	while (n-- > 0)
5711 	{
5712 	    /* put a backslash before \ and some others */
5713 	    if (vim_strchr(aux_ptr, *ptr) != NULL)
5714 		*p++ = '\\';
5715 	    /* When current byte is a part of multibyte character, copy all
5716 	     * bytes of that character. */
5717 	    if (has_mbyte)
5718 	    {
5719 		int i;
5720 		int len = (*mb_ptr2len)(ptr) - 1;
5721 
5722 		for (i = 0; i < len && n >= 1; ++i, --n)
5723 		    *p++ = *ptr++;
5724 	    }
5725 	    *p++ = *ptr++;
5726 	}
5727 	*p = NUL;
5728     }
5729 
5730     /*
5731      * Execute the command.
5732      */
5733     if (cmdchar == '*' || cmdchar == '#')
5734     {
5735 	if (!g_cmd && (has_mbyte
5736 		    ? vim_iswordp(mb_prevptr(ml_get_curline(), ptr))
5737 		    : vim_iswordc(ptr[-1])))
5738 	    STRCAT(buf, "\\>");
5739 #ifdef FEAT_CMDHIST
5740 	/* put pattern in search history */
5741 	init_history();
5742 	add_to_history(HIST_SEARCH, buf, TRUE, NUL);
5743 #endif
5744 	(void)normal_search(cap, cmdchar == '*' ? '/' : '?', buf, 0);
5745     }
5746     else
5747     {
5748 	g_tag_at_cursor = TRUE;
5749 	do_cmdline_cmd(buf);
5750 	g_tag_at_cursor = FALSE;
5751     }
5752 
5753     vim_free(buf);
5754 }
5755 
5756 /*
5757  * Get visually selected text, within one line only.
5758  * Returns FAIL if more than one line selected.
5759  */
5760     int
5761 get_visual_text(
5762     cmdarg_T	*cap,
5763     char_u	**pp,	    /* return: start of selected text */
5764     int		*lenp)	    /* return: length of selected text */
5765 {
5766     if (VIsual_mode != 'V')
5767 	unadjust_for_sel();
5768     if (VIsual.lnum != curwin->w_cursor.lnum)
5769     {
5770 	if (cap != NULL)
5771 	    clearopbeep(cap->oap);
5772 	return FAIL;
5773     }
5774     if (VIsual_mode == 'V')
5775     {
5776 	*pp = ml_get_curline();
5777 	*lenp = (int)STRLEN(*pp);
5778     }
5779     else
5780     {
5781 	if (LT_POS(curwin->w_cursor, VIsual))
5782 	{
5783 	    *pp = ml_get_pos(&curwin->w_cursor);
5784 	    *lenp = VIsual.col - curwin->w_cursor.col + 1;
5785 	}
5786 	else
5787 	{
5788 	    *pp = ml_get_pos(&VIsual);
5789 	    *lenp = curwin->w_cursor.col - VIsual.col + 1;
5790 	}
5791 	if (has_mbyte)
5792 	    /* Correct the length to include the whole last character. */
5793 	    *lenp += (*mb_ptr2len)(*pp + (*lenp - 1)) - 1;
5794     }
5795     reset_VIsual_and_resel();
5796     return OK;
5797 }
5798 
5799 /*
5800  * CTRL-T: backwards in tag stack
5801  */
5802     static void
5803 nv_tagpop(cmdarg_T *cap)
5804 {
5805     if (!checkclearopq(cap->oap))
5806 	do_tag((char_u *)"", DT_POP, (int)cap->count1, FALSE, TRUE);
5807 }
5808 
5809 /*
5810  * Handle scrolling command 'H', 'L' and 'M'.
5811  */
5812     static void
5813 nv_scroll(cmdarg_T *cap)
5814 {
5815     int		used = 0;
5816     long	n;
5817 #ifdef FEAT_FOLDING
5818     linenr_T	lnum;
5819 #endif
5820     int		half;
5821 
5822     cap->oap->motion_type = MLINE;
5823     setpcmark();
5824 
5825     if (cap->cmdchar == 'L')
5826     {
5827 	validate_botline();	    /* make sure curwin->w_botline is valid */
5828 	curwin->w_cursor.lnum = curwin->w_botline - 1;
5829 	if (cap->count1 - 1 >= curwin->w_cursor.lnum)
5830 	    curwin->w_cursor.lnum = 1;
5831 	else
5832 	{
5833 #ifdef FEAT_FOLDING
5834 	    if (hasAnyFolding(curwin))
5835 	    {
5836 		/* Count a fold for one screen line. */
5837 		for (n = cap->count1 - 1; n > 0
5838 			    && curwin->w_cursor.lnum > curwin->w_topline; --n)
5839 		{
5840 		    (void)hasFolding(curwin->w_cursor.lnum,
5841 						&curwin->w_cursor.lnum, NULL);
5842 		    --curwin->w_cursor.lnum;
5843 		}
5844 	    }
5845 	    else
5846 #endif
5847 		curwin->w_cursor.lnum -= cap->count1 - 1;
5848 	}
5849     }
5850     else
5851     {
5852 	if (cap->cmdchar == 'M')
5853 	{
5854 #ifdef FEAT_DIFF
5855 	    /* Don't count filler lines above the window. */
5856 	    used -= diff_check_fill(curwin, curwin->w_topline)
5857 							  - curwin->w_topfill;
5858 #endif
5859 	    validate_botline();	    /* make sure w_empty_rows is valid */
5860 	    half = (curwin->w_height - curwin->w_empty_rows + 1) / 2;
5861 	    for (n = 0; curwin->w_topline + n < curbuf->b_ml.ml_line_count; ++n)
5862 	    {
5863 #ifdef FEAT_DIFF
5864 		/* Count half he number of filler lines to be "below this
5865 		 * line" and half to be "above the next line". */
5866 		if (n > 0 && used + diff_check_fill(curwin, curwin->w_topline
5867 							     + n) / 2 >= half)
5868 		{
5869 		    --n;
5870 		    break;
5871 		}
5872 #endif
5873 		used += plines(curwin->w_topline + n);
5874 		if (used >= half)
5875 		    break;
5876 #ifdef FEAT_FOLDING
5877 		if (hasFolding(curwin->w_topline + n, NULL, &lnum))
5878 		    n = lnum - curwin->w_topline;
5879 #endif
5880 	    }
5881 	    if (n > 0 && used > curwin->w_height)
5882 		--n;
5883 	}
5884 	else /* (cap->cmdchar == 'H') */
5885 	{
5886 	    n = cap->count1 - 1;
5887 #ifdef FEAT_FOLDING
5888 	    if (hasAnyFolding(curwin))
5889 	    {
5890 		/* Count a fold for one screen line. */
5891 		lnum = curwin->w_topline;
5892 		while (n-- > 0 && lnum < curwin->w_botline - 1)
5893 		{
5894 		    (void)hasFolding(lnum, NULL, &lnum);
5895 		    ++lnum;
5896 		}
5897 		n = lnum - curwin->w_topline;
5898 	    }
5899 #endif
5900 	}
5901 	curwin->w_cursor.lnum = curwin->w_topline + n;
5902 	if (curwin->w_cursor.lnum > curbuf->b_ml.ml_line_count)
5903 	    curwin->w_cursor.lnum = curbuf->b_ml.ml_line_count;
5904     }
5905 
5906     /* Correct for 'so', except when an operator is pending. */
5907     if (cap->oap->op_type == OP_NOP)
5908 	cursor_correct();
5909     beginline(BL_SOL | BL_FIX);
5910 }
5911 
5912 /*
5913  * Cursor right commands.
5914  */
5915     static void
5916 nv_right(cmdarg_T *cap)
5917 {
5918     long	n;
5919     int		past_line;
5920 
5921     if (mod_mask & (MOD_MASK_SHIFT | MOD_MASK_CTRL))
5922     {
5923 	/* <C-Right> and <S-Right> move a word or WORD right */
5924 	if (mod_mask & MOD_MASK_CTRL)
5925 	    cap->arg = TRUE;
5926 	nv_wordcmd(cap);
5927 	return;
5928     }
5929 
5930     cap->oap->motion_type = MCHAR;
5931     cap->oap->inclusive = FALSE;
5932     past_line = (VIsual_active && *p_sel != 'o');
5933 
5934     /*
5935      * In virtual edit mode, there's no such thing as "past_line", as lines
5936      * are (theoretically) infinitely long.
5937      */
5938     if (virtual_active())
5939 	past_line = 0;
5940 
5941     for (n = cap->count1; n > 0; --n)
5942     {
5943 	if ((!past_line && oneright() == FAIL)
5944 		|| (past_line && *ml_get_cursor() == NUL)
5945 		)
5946 	{
5947 	    /*
5948 	     *	  <Space> wraps to next line if 'whichwrap' has 's'.
5949 	     *	      'l' wraps to next line if 'whichwrap' has 'l'.
5950 	     * CURS_RIGHT wraps to next line if 'whichwrap' has '>'.
5951 	     */
5952 	    if (       ((cap->cmdchar == ' '
5953 			    && vim_strchr(p_ww, 's') != NULL)
5954 			|| (cap->cmdchar == 'l'
5955 			    && vim_strchr(p_ww, 'l') != NULL)
5956 			|| (cap->cmdchar == K_RIGHT
5957 			    && vim_strchr(p_ww, '>') != NULL))
5958 		    && curwin->w_cursor.lnum < curbuf->b_ml.ml_line_count)
5959 	    {
5960 		/* When deleting we also count the NL as a character.
5961 		 * Set cap->oap->inclusive when last char in the line is
5962 		 * included, move to next line after that */
5963 		if (	   cap->oap->op_type != OP_NOP
5964 			&& !cap->oap->inclusive
5965 			&& !LINEEMPTY(curwin->w_cursor.lnum))
5966 		    cap->oap->inclusive = TRUE;
5967 		else
5968 		{
5969 		    ++curwin->w_cursor.lnum;
5970 		    curwin->w_cursor.col = 0;
5971 		    curwin->w_cursor.coladd = 0;
5972 		    curwin->w_set_curswant = TRUE;
5973 		    cap->oap->inclusive = FALSE;
5974 		}
5975 		continue;
5976 	    }
5977 	    if (cap->oap->op_type == OP_NOP)
5978 	    {
5979 		/* Only beep and flush if not moved at all */
5980 		if (n == cap->count1)
5981 		    beep_flush();
5982 	    }
5983 	    else
5984 	    {
5985 		if (!LINEEMPTY(curwin->w_cursor.lnum))
5986 		    cap->oap->inclusive = TRUE;
5987 	    }
5988 	    break;
5989 	}
5990 	else if (past_line)
5991 	{
5992 	    curwin->w_set_curswant = TRUE;
5993 	    if (virtual_active())
5994 		oneright();
5995 	    else
5996 	    {
5997 		if (has_mbyte)
5998 		    curwin->w_cursor.col +=
5999 					 (*mb_ptr2len)(ml_get_cursor());
6000 		else
6001 		    ++curwin->w_cursor.col;
6002 	    }
6003 	}
6004     }
6005 #ifdef FEAT_FOLDING
6006     if (n != cap->count1 && (fdo_flags & FDO_HOR) && KeyTyped
6007 					       && cap->oap->op_type == OP_NOP)
6008 	foldOpenCursor();
6009 #endif
6010 }
6011 
6012 /*
6013  * Cursor left commands.
6014  *
6015  * Returns TRUE when operator end should not be adjusted.
6016  */
6017     static void
6018 nv_left(cmdarg_T *cap)
6019 {
6020     long	n;
6021 
6022     if (mod_mask & (MOD_MASK_SHIFT | MOD_MASK_CTRL))
6023     {
6024 	/* <C-Left> and <S-Left> move a word or WORD left */
6025 	if (mod_mask & MOD_MASK_CTRL)
6026 	    cap->arg = 1;
6027 	nv_bck_word(cap);
6028 	return;
6029     }
6030 
6031     cap->oap->motion_type = MCHAR;
6032     cap->oap->inclusive = FALSE;
6033     for (n = cap->count1; n > 0; --n)
6034     {
6035 	if (oneleft() == FAIL)
6036 	{
6037 	    /* <BS> and <Del> wrap to previous line if 'whichwrap' has 'b'.
6038 	     *		 'h' wraps to previous line if 'whichwrap' has 'h'.
6039 	     *	   CURS_LEFT wraps to previous line if 'whichwrap' has '<'.
6040 	     */
6041 	    if (       (((cap->cmdchar == K_BS
6042 				|| cap->cmdchar == Ctrl_H)
6043 			    && vim_strchr(p_ww, 'b') != NULL)
6044 			|| (cap->cmdchar == 'h'
6045 			    && vim_strchr(p_ww, 'h') != NULL)
6046 			|| (cap->cmdchar == K_LEFT
6047 			    && vim_strchr(p_ww, '<') != NULL))
6048 		    && curwin->w_cursor.lnum > 1)
6049 	    {
6050 		--(curwin->w_cursor.lnum);
6051 		coladvance((colnr_T)MAXCOL);
6052 		curwin->w_set_curswant = TRUE;
6053 
6054 		/* When the NL before the first char has to be deleted we
6055 		 * put the cursor on the NUL after the previous line.
6056 		 * This is a very special case, be careful!
6057 		 * Don't adjust op_end now, otherwise it won't work. */
6058 		if (	   (cap->oap->op_type == OP_DELETE
6059 			    || cap->oap->op_type == OP_CHANGE)
6060 			&& !LINEEMPTY(curwin->w_cursor.lnum))
6061 		{
6062 		    char_u *cp = ml_get_cursor();
6063 
6064 		    if (*cp != NUL)
6065 		    {
6066 			if (has_mbyte)
6067 			    curwin->w_cursor.col += (*mb_ptr2len)(cp);
6068 			else
6069 			    ++curwin->w_cursor.col;
6070 		    }
6071 		    cap->retval |= CA_NO_ADJ_OP_END;
6072 		}
6073 		continue;
6074 	    }
6075 	    /* Only beep and flush if not moved at all */
6076 	    else if (cap->oap->op_type == OP_NOP && n == cap->count1)
6077 		beep_flush();
6078 	    break;
6079 	}
6080     }
6081 #ifdef FEAT_FOLDING
6082     if (n != cap->count1 && (fdo_flags & FDO_HOR) && KeyTyped
6083 					       && cap->oap->op_type == OP_NOP)
6084 	foldOpenCursor();
6085 #endif
6086 }
6087 
6088 /*
6089  * Cursor up commands.
6090  * cap->arg is TRUE for "-": Move cursor to first non-blank.
6091  */
6092     static void
6093 nv_up(cmdarg_T *cap)
6094 {
6095     if (mod_mask & MOD_MASK_SHIFT)
6096     {
6097 	/* <S-Up> is page up */
6098 	cap->arg = BACKWARD;
6099 	nv_page(cap);
6100     }
6101     else
6102     {
6103 	cap->oap->motion_type = MLINE;
6104 	if (cursor_up(cap->count1, cap->oap->op_type == OP_NOP) == FAIL)
6105 	    clearopbeep(cap->oap);
6106 	else if (cap->arg)
6107 	    beginline(BL_WHITE | BL_FIX);
6108     }
6109 }
6110 
6111 /*
6112  * Cursor down commands.
6113  * cap->arg is TRUE for CR and "+": Move cursor to first non-blank.
6114  */
6115     static void
6116 nv_down(cmdarg_T *cap)
6117 {
6118     if (mod_mask & MOD_MASK_SHIFT)
6119     {
6120 	/* <S-Down> is page down */
6121 	cap->arg = FORWARD;
6122 	nv_page(cap);
6123     }
6124 #if defined(FEAT_QUICKFIX)
6125     /* Quickfix window only: view the result under the cursor. */
6126     else if (bt_quickfix(curbuf) && cap->cmdchar == CAR)
6127 	qf_view_result(FALSE);
6128 #endif
6129     else
6130     {
6131 #ifdef FEAT_CMDWIN
6132 	/* In the cmdline window a <CR> executes the command. */
6133 	if (cmdwin_type != 0 && cap->cmdchar == CAR)
6134 	    cmdwin_result = CAR;
6135 	else
6136 #endif
6137 #ifdef FEAT_JOB_CHANNEL
6138 	/* In a prompt buffer a <CR> in the last line invokes the callback. */
6139 	if (bt_prompt(curbuf) && cap->cmdchar == CAR
6140 		       && curwin->w_cursor.lnum == curbuf->b_ml.ml_line_count)
6141 	{
6142 	    invoke_prompt_callback();
6143 	    if (restart_edit == 0)
6144 		restart_edit = 'a';
6145 	}
6146 	else
6147 #endif
6148 	{
6149 	    cap->oap->motion_type = MLINE;
6150 	    if (cursor_down(cap->count1, cap->oap->op_type == OP_NOP) == FAIL)
6151 		clearopbeep(cap->oap);
6152 	    else if (cap->arg)
6153 		beginline(BL_WHITE | BL_FIX);
6154 	}
6155     }
6156 }
6157 
6158 #ifdef FEAT_SEARCHPATH
6159 /*
6160  * Grab the file name under the cursor and edit it.
6161  */
6162     static void
6163 nv_gotofile(cmdarg_T *cap)
6164 {
6165     char_u	*ptr;
6166     linenr_T	lnum = -1;
6167 
6168     if (text_locked())
6169     {
6170 	clearopbeep(cap->oap);
6171 	text_locked_msg();
6172 	return;
6173     }
6174     if (curbuf_locked())
6175     {
6176 	clearop(cap->oap);
6177 	return;
6178     }
6179 
6180     ptr = grab_file_name(cap->count1, &lnum);
6181 
6182     if (ptr != NULL)
6183     {
6184 	/* do autowrite if necessary */
6185 	if (curbufIsChanged() && curbuf->b_nwindows <= 1 && !buf_hide(curbuf))
6186 	    (void)autowrite(curbuf, FALSE);
6187 	setpcmark();
6188 	if (do_ecmd(0, ptr, NULL, NULL, ECMD_LAST,
6189 				buf_hide(curbuf) ? ECMD_HIDE : 0, curwin) == OK
6190 		&& cap->nchar == 'F' && lnum >= 0)
6191 	{
6192 	    curwin->w_cursor.lnum = lnum;
6193 	    check_cursor_lnum();
6194 	    beginline(BL_SOL | BL_FIX);
6195 	}
6196 	vim_free(ptr);
6197     }
6198     else
6199 	clearop(cap->oap);
6200 }
6201 #endif
6202 
6203 /*
6204  * <End> command: to end of current line or last line.
6205  */
6206     static void
6207 nv_end(cmdarg_T *cap)
6208 {
6209     if (cap->arg || (mod_mask & MOD_MASK_CTRL))	/* CTRL-END = goto last line */
6210     {
6211 	cap->arg = TRUE;
6212 	nv_goto(cap);
6213 	cap->count1 = 1;		/* to end of current line */
6214     }
6215     nv_dollar(cap);
6216 }
6217 
6218 /*
6219  * Handle the "$" command.
6220  */
6221     static void
6222 nv_dollar(cmdarg_T *cap)
6223 {
6224     cap->oap->motion_type = MCHAR;
6225     cap->oap->inclusive = TRUE;
6226     /* In virtual mode when off the edge of a line and an operator
6227      * is pending (whew!) keep the cursor where it is.
6228      * Otherwise, send it to the end of the line. */
6229     if (!virtual_active() || gchar_cursor() != NUL
6230 					       || cap->oap->op_type == OP_NOP)
6231 	curwin->w_curswant = MAXCOL;	/* so we stay at the end */
6232     if (cursor_down((long)(cap->count1 - 1),
6233 					 cap->oap->op_type == OP_NOP) == FAIL)
6234 	clearopbeep(cap->oap);
6235 #ifdef FEAT_FOLDING
6236     else if ((fdo_flags & FDO_HOR) && KeyTyped && cap->oap->op_type == OP_NOP)
6237 	foldOpenCursor();
6238 #endif
6239 }
6240 
6241 /*
6242  * Implementation of '?' and '/' commands.
6243  * If cap->arg is TRUE don't set PC mark.
6244  */
6245     static void
6246 nv_search(cmdarg_T *cap)
6247 {
6248     oparg_T	*oap = cap->oap;
6249     pos_T	save_cursor = curwin->w_cursor;
6250 
6251     if (cap->cmdchar == '?' && cap->oap->op_type == OP_ROT13)
6252     {
6253 	/* Translate "g??" to "g?g?" */
6254 	cap->cmdchar = 'g';
6255 	cap->nchar = '?';
6256 	nv_operator(cap);
6257 	return;
6258     }
6259 
6260     /* When using 'incsearch' the cursor may be moved to set a different search
6261      * start position. */
6262     cap->searchbuf = getcmdline(cap->cmdchar, cap->count1, 0, TRUE);
6263 
6264     if (cap->searchbuf == NULL)
6265     {
6266 	clearop(oap);
6267 	return;
6268     }
6269 
6270     (void)normal_search(cap, cap->cmdchar, cap->searchbuf,
6271 			(cap->arg || !EQUAL_POS(save_cursor, curwin->w_cursor))
6272 							   ? 0 : SEARCH_MARK);
6273 }
6274 
6275 /*
6276  * Handle "N" and "n" commands.
6277  * cap->arg is SEARCH_REV for "N", 0 for "n".
6278  */
6279     static void
6280 nv_next(cmdarg_T *cap)
6281 {
6282     pos_T old = curwin->w_cursor;
6283     int   i = normal_search(cap, 0, NULL, SEARCH_MARK | cap->arg);
6284 
6285     if (i == 1 && EQUAL_POS(old, curwin->w_cursor))
6286     {
6287 	/* Avoid getting stuck on the current cursor position, which can
6288 	 * happen when an offset is given and the cursor is on the last char
6289 	 * in the buffer: Repeat with count + 1. */
6290 	cap->count1 += 1;
6291 	(void)normal_search(cap, 0, NULL, SEARCH_MARK | cap->arg);
6292 	cap->count1 -= 1;
6293     }
6294 }
6295 
6296 /*
6297  * Search for "pat" in direction "dir" ('/' or '?', 0 for repeat).
6298  * Uses only cap->count1 and cap->oap from "cap".
6299  * Return 0 for failure, 1 for found, 2 for found and line offset added.
6300  */
6301     static int
6302 normal_search(
6303     cmdarg_T	*cap,
6304     int		dir,
6305     char_u	*pat,
6306     int		opt)		/* extra flags for do_search() */
6307 {
6308     int		i;
6309 
6310     cap->oap->motion_type = MCHAR;
6311     cap->oap->inclusive = FALSE;
6312     cap->oap->use_reg_one = TRUE;
6313     curwin->w_set_curswant = TRUE;
6314 
6315     i = do_search(cap->oap, dir, pat, cap->count1,
6316 		      opt | SEARCH_OPT | SEARCH_ECHO | SEARCH_MSG, NULL, NULL);
6317     if (i == 0)
6318 	clearop(cap->oap);
6319     else
6320     {
6321 	if (i == 2)
6322 	    cap->oap->motion_type = MLINE;
6323 	curwin->w_cursor.coladd = 0;
6324 #ifdef FEAT_FOLDING
6325 	if (cap->oap->op_type == OP_NOP && (fdo_flags & FDO_SEARCH) && KeyTyped)
6326 	    foldOpenCursor();
6327 #endif
6328     }
6329 
6330     /* "/$" will put the cursor after the end of the line, may need to
6331      * correct that here */
6332     check_cursor();
6333     return i;
6334 }
6335 
6336 /*
6337  * Character search commands.
6338  * cap->arg is BACKWARD for 'F' and 'T', FORWARD for 'f' and 't', TRUE for
6339  * ',' and FALSE for ';'.
6340  * cap->nchar is NUL for ',' and ';' (repeat the search)
6341  */
6342     static void
6343 nv_csearch(cmdarg_T *cap)
6344 {
6345     int		t_cmd;
6346 
6347     if (cap->cmdchar == 't' || cap->cmdchar == 'T')
6348 	t_cmd = TRUE;
6349     else
6350 	t_cmd = FALSE;
6351 
6352     cap->oap->motion_type = MCHAR;
6353     if (IS_SPECIAL(cap->nchar) || searchc(cap, t_cmd) == FAIL)
6354 	clearopbeep(cap->oap);
6355     else
6356     {
6357 	curwin->w_set_curswant = TRUE;
6358 	/* Include a Tab for "tx" and for "dfx". */
6359 	if (gchar_cursor() == TAB && virtual_active() && cap->arg == FORWARD
6360 		&& (t_cmd || cap->oap->op_type != OP_NOP))
6361 	{
6362 	    colnr_T	scol, ecol;
6363 
6364 	    getvcol(curwin, &curwin->w_cursor, &scol, NULL, &ecol);
6365 	    curwin->w_cursor.coladd = ecol - scol;
6366 	}
6367 	else
6368 	    curwin->w_cursor.coladd = 0;
6369 	adjust_for_sel(cap);
6370 #ifdef FEAT_FOLDING
6371 	if ((fdo_flags & FDO_HOR) && KeyTyped && cap->oap->op_type == OP_NOP)
6372 	    foldOpenCursor();
6373 #endif
6374     }
6375 }
6376 
6377 /*
6378  * "[" and "]" commands.
6379  * cap->arg is BACKWARD for "[" and FORWARD for "]".
6380  */
6381     static void
6382 nv_brackets(cmdarg_T *cap)
6383 {
6384     pos_T	new_pos = {0, 0, 0};
6385     pos_T	prev_pos;
6386     pos_T	*pos = NULL;	    /* init for GCC */
6387     pos_T	old_pos;	    /* cursor position before command */
6388     int		flag;
6389     long	n;
6390     int		findc;
6391     int		c;
6392 
6393     cap->oap->motion_type = MCHAR;
6394     cap->oap->inclusive = FALSE;
6395     old_pos = curwin->w_cursor;
6396     curwin->w_cursor.coladd = 0;    // TODO: don't do this for an error.
6397 
6398 #ifdef FEAT_SEARCHPATH
6399     /*
6400      * "[f" or "]f" : Edit file under the cursor (same as "gf")
6401      */
6402     if (cap->nchar == 'f')
6403 	nv_gotofile(cap);
6404     else
6405 #endif
6406 
6407 #ifdef FEAT_FIND_ID
6408     /*
6409      * Find the occurrence(s) of the identifier or define under cursor
6410      * in current and included files or jump to the first occurrence.
6411      *
6412      *			search	     list	    jump
6413      *		      fwd   bwd    fwd	 bwd	 fwd	bwd
6414      * identifier     "]i"  "[i"   "]I"  "[I"	"]^I"  "[^I"
6415      * define	      "]d"  "[d"   "]D"  "[D"	"]^D"  "[^D"
6416      */
6417     if (vim_strchr((char_u *)
6418 # ifdef EBCDIC
6419 		"iI\005dD\067",
6420 # else
6421 		"iI\011dD\004",
6422 # endif
6423 		cap->nchar) != NULL)
6424     {
6425 	char_u	*ptr;
6426 	int	len;
6427 
6428 	if ((len = find_ident_under_cursor(&ptr, FIND_IDENT)) == 0)
6429 	    clearop(cap->oap);
6430 	else
6431 	{
6432 	    find_pattern_in_path(ptr, 0, len, TRUE,
6433 		cap->count0 == 0 ? !isupper(cap->nchar) : FALSE,
6434 		((cap->nchar & 0xf) == ('d' & 0xf)) ?  FIND_DEFINE : FIND_ANY,
6435 		cap->count1,
6436 		isupper(cap->nchar) ? ACTION_SHOW_ALL :
6437 			    islower(cap->nchar) ? ACTION_SHOW : ACTION_GOTO,
6438 		cap->cmdchar == ']' ? curwin->w_cursor.lnum + 1 : (linenr_T)1,
6439 		(linenr_T)MAXLNUM);
6440 	    curwin->w_set_curswant = TRUE;
6441 	}
6442     }
6443     else
6444 #endif
6445 
6446     /*
6447      * "[{", "[(", "]}" or "])": go to Nth unclosed '{', '(', '}' or ')'
6448      * "[#", "]#": go to start/end of Nth innermost #if..#endif construct.
6449      * "[/", "[*", "]/", "]*": go to Nth comment start/end.
6450      * "[m" or "]m" search for prev/next start of (Java) method.
6451      * "[M" or "]M" search for prev/next end of (Java) method.
6452      */
6453     if (  (cap->cmdchar == '['
6454 		&& vim_strchr((char_u *)"{(*/#mM", cap->nchar) != NULL)
6455 	    || (cap->cmdchar == ']'
6456 		&& vim_strchr((char_u *)"})*/#mM", cap->nchar) != NULL))
6457     {
6458 	if (cap->nchar == '*')
6459 	    cap->nchar = '/';
6460 	prev_pos.lnum = 0;
6461 	if (cap->nchar == 'm' || cap->nchar == 'M')
6462 	{
6463 	    if (cap->cmdchar == '[')
6464 		findc = '{';
6465 	    else
6466 		findc = '}';
6467 	    n = 9999;
6468 	}
6469 	else
6470 	{
6471 	    findc = cap->nchar;
6472 	    n = cap->count1;
6473 	}
6474 	for ( ; n > 0; --n)
6475 	{
6476 	    if ((pos = findmatchlimit(cap->oap, findc,
6477 		(cap->cmdchar == '[') ? FM_BACKWARD : FM_FORWARD, 0)) == NULL)
6478 	    {
6479 		if (new_pos.lnum == 0)	/* nothing found */
6480 		{
6481 		    if (cap->nchar != 'm' && cap->nchar != 'M')
6482 			clearopbeep(cap->oap);
6483 		}
6484 		else
6485 		    pos = &new_pos;	/* use last one found */
6486 		break;
6487 	    }
6488 	    prev_pos = new_pos;
6489 	    curwin->w_cursor = *pos;
6490 	    new_pos = *pos;
6491 	}
6492 	curwin->w_cursor = old_pos;
6493 
6494 	/*
6495 	 * Handle "[m", "]m", "[M" and "[M".  The findmatchlimit() only
6496 	 * brought us to the match for "[m" and "]M" when inside a method.
6497 	 * Try finding the '{' or '}' we want to be at.
6498 	 * Also repeat for the given count.
6499 	 */
6500 	if (cap->nchar == 'm' || cap->nchar == 'M')
6501 	{
6502 	    /* norm is TRUE for "]M" and "[m" */
6503 	    int	    norm = ((findc == '{') == (cap->nchar == 'm'));
6504 
6505 	    n = cap->count1;
6506 	    /* found a match: we were inside a method */
6507 	    if (prev_pos.lnum != 0)
6508 	    {
6509 		pos = &prev_pos;
6510 		curwin->w_cursor = prev_pos;
6511 		if (norm)
6512 		    --n;
6513 	    }
6514 	    else
6515 		pos = NULL;
6516 	    while (n > 0)
6517 	    {
6518 		for (;;)
6519 		{
6520 		    if ((findc == '{' ? dec_cursor() : inc_cursor()) < 0)
6521 		    {
6522 			/* if not found anything, that's an error */
6523 			if (pos == NULL)
6524 			    clearopbeep(cap->oap);
6525 			n = 0;
6526 			break;
6527 		    }
6528 		    c = gchar_cursor();
6529 		    if (c == '{' || c == '}')
6530 		    {
6531 			/* Must have found end/start of class: use it.
6532 			 * Or found the place to be at. */
6533 			if ((c == findc && norm) || (n == 1 && !norm))
6534 			{
6535 			    new_pos = curwin->w_cursor;
6536 			    pos = &new_pos;
6537 			    n = 0;
6538 			}
6539 			/* if no match found at all, we started outside of the
6540 			 * class and we're inside now.  Just go on. */
6541 			else if (new_pos.lnum == 0)
6542 			{
6543 			    new_pos = curwin->w_cursor;
6544 			    pos = &new_pos;
6545 			}
6546 			/* found start/end of other method: go to match */
6547 			else if ((pos = findmatchlimit(cap->oap, findc,
6548 			    (cap->cmdchar == '[') ? FM_BACKWARD : FM_FORWARD,
6549 								  0)) == NULL)
6550 			    n = 0;
6551 			else
6552 			    curwin->w_cursor = *pos;
6553 			break;
6554 		    }
6555 		}
6556 		--n;
6557 	    }
6558 	    curwin->w_cursor = old_pos;
6559 	    if (pos == NULL && new_pos.lnum != 0)
6560 		clearopbeep(cap->oap);
6561 	}
6562 	if (pos != NULL)
6563 	{
6564 	    setpcmark();
6565 	    curwin->w_cursor = *pos;
6566 	    curwin->w_set_curswant = TRUE;
6567 #ifdef FEAT_FOLDING
6568 	    if ((fdo_flags & FDO_BLOCK) && KeyTyped
6569 					       && cap->oap->op_type == OP_NOP)
6570 		foldOpenCursor();
6571 #endif
6572 	}
6573     }
6574 
6575     /*
6576      * "[[", "[]", "]]" and "][": move to start or end of function
6577      */
6578     else if (cap->nchar == '[' || cap->nchar == ']')
6579     {
6580 	if (cap->nchar == cap->cmdchar)		    /* "]]" or "[[" */
6581 	    flag = '{';
6582 	else
6583 	    flag = '}';		    /* "][" or "[]" */
6584 
6585 	curwin->w_set_curswant = TRUE;
6586 	/*
6587 	 * Imitate strange Vi behaviour: When using "]]" with an operator
6588 	 * we also stop at '}'.
6589 	 */
6590 	if (!findpar(&cap->oap->inclusive, cap->arg, cap->count1, flag,
6591 	      (cap->oap->op_type != OP_NOP
6592 				      && cap->arg == FORWARD && flag == '{')))
6593 	    clearopbeep(cap->oap);
6594 	else
6595 	{
6596 	    if (cap->oap->op_type == OP_NOP)
6597 		beginline(BL_WHITE | BL_FIX);
6598 #ifdef FEAT_FOLDING
6599 	    if ((fdo_flags & FDO_BLOCK) && KeyTyped && cap->oap->op_type == OP_NOP)
6600 		foldOpenCursor();
6601 #endif
6602 	}
6603     }
6604 
6605     /*
6606      * "[p", "[P", "]P" and "]p": put with indent adjustment
6607      */
6608     else if (cap->nchar == 'p' || cap->nchar == 'P')
6609     {
6610 	nv_put_opt(cap, TRUE);
6611     }
6612 
6613     /*
6614      * "['", "[`", "]'" and "]`": jump to next mark
6615      */
6616     else if (cap->nchar == '\'' || cap->nchar == '`')
6617     {
6618 	pos = &curwin->w_cursor;
6619 	for (n = cap->count1; n > 0; --n)
6620 	{
6621 	    prev_pos = *pos;
6622 	    pos = getnextmark(pos, cap->cmdchar == '[' ? BACKWARD : FORWARD,
6623 							  cap->nchar == '\'');
6624 	    if (pos == NULL)
6625 		break;
6626 	}
6627 	if (pos == NULL)
6628 	    pos = &prev_pos;
6629 	nv_cursormark(cap, cap->nchar == '\'', pos);
6630     }
6631 
6632 #ifdef FEAT_MOUSE
6633     /*
6634      * [ or ] followed by a middle mouse click: put selected text with
6635      * indent adjustment.  Any other button just does as usual.
6636      */
6637     else if (cap->nchar >= K_RIGHTRELEASE && cap->nchar <= K_LEFTMOUSE)
6638     {
6639 	(void)do_mouse(cap->oap, cap->nchar,
6640 		       (cap->cmdchar == ']') ? FORWARD : BACKWARD,
6641 		       cap->count1, PUT_FIXINDENT);
6642     }
6643 #endif /* FEAT_MOUSE */
6644 
6645 #ifdef FEAT_FOLDING
6646     /*
6647      * "[z" and "]z": move to start or end of open fold.
6648      */
6649     else if (cap->nchar == 'z')
6650     {
6651 	if (foldMoveTo(FALSE, cap->cmdchar == ']' ? FORWARD : BACKWARD,
6652 							 cap->count1) == FAIL)
6653 	    clearopbeep(cap->oap);
6654     }
6655 #endif
6656 
6657 #ifdef FEAT_DIFF
6658     /*
6659      * "[c" and "]c": move to next or previous diff-change.
6660      */
6661     else if (cap->nchar == 'c')
6662     {
6663 	if (diff_move_to(cap->cmdchar == ']' ? FORWARD : BACKWARD,
6664 							 cap->count1) == FAIL)
6665 	    clearopbeep(cap->oap);
6666     }
6667 #endif
6668 
6669 #ifdef FEAT_SPELL
6670     /*
6671      * "[s", "[S", "]s" and "]S": move to next spell error.
6672      */
6673     else if (cap->nchar == 's' || cap->nchar == 'S')
6674     {
6675 	setpcmark();
6676 	for (n = 0; n < cap->count1; ++n)
6677 	    if (spell_move_to(curwin, cap->cmdchar == ']' ? FORWARD : BACKWARD,
6678 			  cap->nchar == 's' ? TRUE : FALSE, FALSE, NULL) == 0)
6679 	    {
6680 		clearopbeep(cap->oap);
6681 		break;
6682 	    }
6683 	    else
6684 		curwin->w_set_curswant = TRUE;
6685 # ifdef FEAT_FOLDING
6686 	if (cap->oap->op_type == OP_NOP && (fdo_flags & FDO_SEARCH) && KeyTyped)
6687 	    foldOpenCursor();
6688 # endif
6689     }
6690 #endif
6691 
6692     /* Not a valid cap->nchar. */
6693     else
6694 	clearopbeep(cap->oap);
6695 }
6696 
6697 /*
6698  * Handle Normal mode "%" command.
6699  */
6700     static void
6701 nv_percent(cmdarg_T *cap)
6702 {
6703     pos_T	*pos;
6704 #if defined(FEAT_FOLDING)
6705     linenr_T	lnum = curwin->w_cursor.lnum;
6706 #endif
6707 
6708     cap->oap->inclusive = TRUE;
6709     if (cap->count0)	    /* {cnt}% : goto {cnt} percentage in file */
6710     {
6711 	if (cap->count0 > 100)
6712 	    clearopbeep(cap->oap);
6713 	else
6714 	{
6715 	    cap->oap->motion_type = MLINE;
6716 	    setpcmark();
6717 	    /* Round up, so CTRL-G will give same value.  Watch out for a
6718 	     * large line count, the line number must not go negative! */
6719 	    if (curbuf->b_ml.ml_line_count > 1000000)
6720 		curwin->w_cursor.lnum = (curbuf->b_ml.ml_line_count + 99L)
6721 							 / 100L * cap->count0;
6722 	    else
6723 		curwin->w_cursor.lnum = (curbuf->b_ml.ml_line_count *
6724 						    cap->count0 + 99L) / 100L;
6725 	    if (curwin->w_cursor.lnum > curbuf->b_ml.ml_line_count)
6726 		curwin->w_cursor.lnum = curbuf->b_ml.ml_line_count;
6727 	    beginline(BL_SOL | BL_FIX);
6728 	}
6729     }
6730     else		    /* "%" : go to matching paren */
6731     {
6732 	cap->oap->motion_type = MCHAR;
6733 	cap->oap->use_reg_one = TRUE;
6734 	if ((pos = findmatch(cap->oap, NUL)) == NULL)
6735 	    clearopbeep(cap->oap);
6736 	else
6737 	{
6738 	    setpcmark();
6739 	    curwin->w_cursor = *pos;
6740 	    curwin->w_set_curswant = TRUE;
6741 	    curwin->w_cursor.coladd = 0;
6742 	    adjust_for_sel(cap);
6743 	}
6744     }
6745 #ifdef FEAT_FOLDING
6746     if (cap->oap->op_type == OP_NOP
6747 	    && lnum != curwin->w_cursor.lnum
6748 	    && (fdo_flags & FDO_PERCENT)
6749 	    && KeyTyped)
6750 	foldOpenCursor();
6751 #endif
6752 }
6753 
6754 /*
6755  * Handle "(" and ")" commands.
6756  * cap->arg is BACKWARD for "(" and FORWARD for ")".
6757  */
6758     static void
6759 nv_brace(cmdarg_T *cap)
6760 {
6761     cap->oap->motion_type = MCHAR;
6762     cap->oap->use_reg_one = TRUE;
6763     /* The motion used to be inclusive for "(", but that is not what Vi does. */
6764     cap->oap->inclusive = FALSE;
6765     curwin->w_set_curswant = TRUE;
6766 
6767     if (findsent(cap->arg, cap->count1) == FAIL)
6768 	clearopbeep(cap->oap);
6769     else
6770     {
6771 	/* Don't leave the cursor on the NUL past end of line. */
6772 	adjust_cursor(cap->oap);
6773 	curwin->w_cursor.coladd = 0;
6774 #ifdef FEAT_FOLDING
6775 	if ((fdo_flags & FDO_BLOCK) && KeyTyped && cap->oap->op_type == OP_NOP)
6776 	    foldOpenCursor();
6777 #endif
6778     }
6779 }
6780 
6781 /*
6782  * "m" command: Mark a position.
6783  */
6784     static void
6785 nv_mark(cmdarg_T *cap)
6786 {
6787     if (!checkclearop(cap->oap))
6788     {
6789 	if (setmark(cap->nchar) == FAIL)
6790 	    clearopbeep(cap->oap);
6791     }
6792 }
6793 
6794 /*
6795  * "{" and "}" commands.
6796  * cmd->arg is BACKWARD for "{" and FORWARD for "}".
6797  */
6798     static void
6799 nv_findpar(cmdarg_T *cap)
6800 {
6801     cap->oap->motion_type = MCHAR;
6802     cap->oap->inclusive = FALSE;
6803     cap->oap->use_reg_one = TRUE;
6804     curwin->w_set_curswant = TRUE;
6805     if (!findpar(&cap->oap->inclusive, cap->arg, cap->count1, NUL, FALSE))
6806 	clearopbeep(cap->oap);
6807     else
6808     {
6809 	curwin->w_cursor.coladd = 0;
6810 #ifdef FEAT_FOLDING
6811 	if ((fdo_flags & FDO_BLOCK) && KeyTyped && cap->oap->op_type == OP_NOP)
6812 	    foldOpenCursor();
6813 #endif
6814     }
6815 }
6816 
6817 /*
6818  * "u" command: Undo or make lower case.
6819  */
6820     static void
6821 nv_undo(cmdarg_T *cap)
6822 {
6823     if (cap->oap->op_type == OP_LOWER || VIsual_active)
6824     {
6825 	/* translate "<Visual>u" to "<Visual>gu" and "guu" to "gugu" */
6826 	cap->cmdchar = 'g';
6827 	cap->nchar = 'u';
6828 	nv_operator(cap);
6829     }
6830     else
6831 	nv_kundo(cap);
6832 }
6833 
6834 /*
6835  * <Undo> command.
6836  */
6837     static void
6838 nv_kundo(cmdarg_T *cap)
6839 {
6840     if (!checkclearopq(cap->oap))
6841     {
6842 #ifdef FEAT_JOB_CHANNEL
6843 	if (bt_prompt(curbuf))
6844 	{
6845 	    clearopbeep(cap->oap);
6846 	    return;
6847 	}
6848 #endif
6849 	u_undo((int)cap->count1);
6850 	curwin->w_set_curswant = TRUE;
6851     }
6852 }
6853 
6854 /*
6855  * Handle the "r" command.
6856  */
6857     static void
6858 nv_replace(cmdarg_T *cap)
6859 {
6860     char_u	*ptr;
6861     int		had_ctrl_v;
6862     long	n;
6863 
6864     if (checkclearop(cap->oap))
6865 	return;
6866 #ifdef FEAT_JOB_CHANNEL
6867     if (bt_prompt(curbuf) && !prompt_curpos_editable())
6868     {
6869 	clearopbeep(cap->oap);
6870 	return;
6871     }
6872 #endif
6873 
6874     /* get another character */
6875     if (cap->nchar == Ctrl_V)
6876     {
6877 	had_ctrl_v = Ctrl_V;
6878 	cap->nchar = get_literal();
6879 	/* Don't redo a multibyte character with CTRL-V. */
6880 	if (cap->nchar > DEL)
6881 	    had_ctrl_v = NUL;
6882     }
6883     else
6884 	had_ctrl_v = NUL;
6885 
6886     /* Abort if the character is a special key. */
6887     if (IS_SPECIAL(cap->nchar))
6888     {
6889 	clearopbeep(cap->oap);
6890 	return;
6891     }
6892 
6893     /* Visual mode "r" */
6894     if (VIsual_active)
6895     {
6896 	if (got_int)
6897 	    reset_VIsual();
6898 	if (had_ctrl_v)
6899 	{
6900 	    /* Use a special (negative) number to make a difference between a
6901 	     * literal CR or NL and a line break. */
6902 	    if (cap->nchar == CAR)
6903 		cap->nchar = REPLACE_CR_NCHAR;
6904 	    else if (cap->nchar == NL)
6905 		cap->nchar = REPLACE_NL_NCHAR;
6906 	}
6907 	nv_operator(cap);
6908 	return;
6909     }
6910 
6911     /* Break tabs, etc. */
6912     if (virtual_active())
6913     {
6914 	if (u_save_cursor() == FAIL)
6915 	    return;
6916 	if (gchar_cursor() == NUL)
6917 	{
6918 	    /* Add extra space and put the cursor on the first one. */
6919 	    coladvance_force((colnr_T)(getviscol() + cap->count1));
6920 	    curwin->w_cursor.col -= cap->count1;
6921 	}
6922 	else if (gchar_cursor() == TAB)
6923 	    coladvance_force(getviscol());
6924     }
6925 
6926     /* Abort if not enough characters to replace. */
6927     ptr = ml_get_cursor();
6928     if (STRLEN(ptr) < (unsigned)cap->count1
6929 	    || (has_mbyte && mb_charlen(ptr) < cap->count1))
6930     {
6931 	clearopbeep(cap->oap);
6932 	return;
6933     }
6934 
6935     /*
6936      * Replacing with a TAB is done by edit() when it is complicated because
6937      * 'expandtab' or 'smarttab' is set.  CTRL-V TAB inserts a literal TAB.
6938      * Other characters are done below to avoid problems with things like
6939      * CTRL-V 048 (for edit() this would be R CTRL-V 0 ESC).
6940      */
6941     if (had_ctrl_v != Ctrl_V && cap->nchar == '\t' && (curbuf->b_p_et || p_sta))
6942     {
6943 	stuffnumReadbuff(cap->count1);
6944 	stuffcharReadbuff('R');
6945 	stuffcharReadbuff('\t');
6946 	stuffcharReadbuff(ESC);
6947 	return;
6948     }
6949 
6950     /* save line for undo */
6951     if (u_save_cursor() == FAIL)
6952 	return;
6953 
6954     if (had_ctrl_v != Ctrl_V && (cap->nchar == '\r' || cap->nchar == '\n'))
6955     {
6956 	/*
6957 	 * Replace character(s) by a single newline.
6958 	 * Strange vi behaviour: Only one newline is inserted.
6959 	 * Delete the characters here.
6960 	 * Insert the newline with an insert command, takes care of
6961 	 * autoindent.	The insert command depends on being on the last
6962 	 * character of a line or not.
6963 	 */
6964 	(void)del_chars(cap->count1, FALSE);	/* delete the characters */
6965 	stuffcharReadbuff('\r');
6966 	stuffcharReadbuff(ESC);
6967 
6968 	/* Give 'r' to edit(), to get the redo command right. */
6969 	invoke_edit(cap, TRUE, 'r', FALSE);
6970     }
6971     else
6972     {
6973 	prep_redo(cap->oap->regname, cap->count1,
6974 				       NUL, 'r', NUL, had_ctrl_v, cap->nchar);
6975 
6976 	curbuf->b_op_start = curwin->w_cursor;
6977 	if (has_mbyte)
6978 	{
6979 	    int		old_State = State;
6980 
6981 	    if (cap->ncharC1 != 0)
6982 		AppendCharToRedobuff(cap->ncharC1);
6983 	    if (cap->ncharC2 != 0)
6984 		AppendCharToRedobuff(cap->ncharC2);
6985 
6986 	    /* This is slow, but it handles replacing a single-byte with a
6987 	     * multi-byte and the other way around.  Also handles adding
6988 	     * composing characters for utf-8. */
6989 	    for (n = cap->count1; n > 0; --n)
6990 	    {
6991 		State = REPLACE;
6992 		if (cap->nchar == Ctrl_E || cap->nchar == Ctrl_Y)
6993 		{
6994 		    int c = ins_copychar(curwin->w_cursor.lnum
6995 					   + (cap->nchar == Ctrl_Y ? -1 : 1));
6996 		    if (c != NUL)
6997 			ins_char(c);
6998 		    else
6999 			/* will be decremented further down */
7000 			++curwin->w_cursor.col;
7001 		}
7002 		else
7003 		    ins_char(cap->nchar);
7004 		State = old_State;
7005 		if (cap->ncharC1 != 0)
7006 		    ins_char(cap->ncharC1);
7007 		if (cap->ncharC2 != 0)
7008 		    ins_char(cap->ncharC2);
7009 	    }
7010 	}
7011 	else
7012 	{
7013 	    /*
7014 	     * Replace the characters within one line.
7015 	     */
7016 	    for (n = cap->count1; n > 0; --n)
7017 	    {
7018 		/*
7019 		 * Get ptr again, because u_save and/or showmatch() will have
7020 		 * released the line.  At the same time we let know that the
7021 		 * line will be changed.
7022 		 */
7023 		ptr = ml_get_buf(curbuf, curwin->w_cursor.lnum, TRUE);
7024 		if (cap->nchar == Ctrl_E || cap->nchar == Ctrl_Y)
7025 		{
7026 		  int c = ins_copychar(curwin->w_cursor.lnum
7027 					   + (cap->nchar == Ctrl_Y ? -1 : 1));
7028 		  if (c != NUL)
7029 		    ptr[curwin->w_cursor.col] = c;
7030 		}
7031 		else
7032 		    ptr[curwin->w_cursor.col] = cap->nchar;
7033 		if (p_sm && msg_silent == 0)
7034 		    showmatch(cap->nchar);
7035 		++curwin->w_cursor.col;
7036 	    }
7037 #ifdef FEAT_NETBEANS_INTG
7038 	    if (netbeans_active())
7039 	    {
7040 		colnr_T  start = (colnr_T)(curwin->w_cursor.col - cap->count1);
7041 
7042 		netbeans_removed(curbuf, curwin->w_cursor.lnum, start,
7043 							   (long)cap->count1);
7044 		netbeans_inserted(curbuf, curwin->w_cursor.lnum, start,
7045 					       &ptr[start], (int)cap->count1);
7046 	    }
7047 #endif
7048 
7049 	    /* mark the buffer as changed and prepare for displaying */
7050 	    changed_bytes(curwin->w_cursor.lnum,
7051 			       (colnr_T)(curwin->w_cursor.col - cap->count1));
7052 	}
7053 	--curwin->w_cursor.col;	    /* cursor on the last replaced char */
7054 	/* if the character on the left of the current cursor is a multi-byte
7055 	 * character, move two characters left */
7056 	if (has_mbyte)
7057 	    mb_adjust_cursor();
7058 	curbuf->b_op_end = curwin->w_cursor;
7059 	curwin->w_set_curswant = TRUE;
7060 	set_last_insert(cap->nchar);
7061     }
7062 }
7063 
7064 /*
7065  * 'o': Exchange start and end of Visual area.
7066  * 'O': same, but in block mode exchange left and right corners.
7067  */
7068     static void
7069 v_swap_corners(int cmdchar)
7070 {
7071     pos_T	old_cursor;
7072     colnr_T	left, right;
7073 
7074     if (cmdchar == 'O' && VIsual_mode == Ctrl_V)
7075     {
7076 	old_cursor = curwin->w_cursor;
7077 	getvcols(curwin, &old_cursor, &VIsual, &left, &right);
7078 	curwin->w_cursor.lnum = VIsual.lnum;
7079 	coladvance(left);
7080 	VIsual = curwin->w_cursor;
7081 
7082 	curwin->w_cursor.lnum = old_cursor.lnum;
7083 	curwin->w_curswant = right;
7084 	/* 'selection "exclusive" and cursor at right-bottom corner: move it
7085 	 * right one column */
7086 	if (old_cursor.lnum >= VIsual.lnum && *p_sel == 'e')
7087 	    ++curwin->w_curswant;
7088 	coladvance(curwin->w_curswant);
7089 	if (curwin->w_cursor.col == old_cursor.col
7090 		&& (!virtual_active()
7091 		    || curwin->w_cursor.coladd == old_cursor.coladd))
7092 	{
7093 	    curwin->w_cursor.lnum = VIsual.lnum;
7094 	    if (old_cursor.lnum <= VIsual.lnum && *p_sel == 'e')
7095 		++right;
7096 	    coladvance(right);
7097 	    VIsual = curwin->w_cursor;
7098 
7099 	    curwin->w_cursor.lnum = old_cursor.lnum;
7100 	    coladvance(left);
7101 	    curwin->w_curswant = left;
7102 	}
7103     }
7104     else
7105     {
7106 	old_cursor = curwin->w_cursor;
7107 	curwin->w_cursor = VIsual;
7108 	VIsual = old_cursor;
7109 	curwin->w_set_curswant = TRUE;
7110     }
7111 }
7112 
7113 /*
7114  * "R" (cap->arg is FALSE) and "gR" (cap->arg is TRUE).
7115  */
7116     static void
7117 nv_Replace(cmdarg_T *cap)
7118 {
7119     if (VIsual_active)		/* "R" is replace lines */
7120     {
7121 	cap->cmdchar = 'c';
7122 	cap->nchar = NUL;
7123 	VIsual_mode_orig = VIsual_mode; /* remember original area for gv */
7124 	VIsual_mode = 'V';
7125 	nv_operator(cap);
7126     }
7127     else if (!checkclearopq(cap->oap))
7128     {
7129 	if (!curbuf->b_p_ma)
7130 	    emsg(_(e_modifiable));
7131 	else
7132 	{
7133 	    if (virtual_active())
7134 		coladvance(getviscol());
7135 	    invoke_edit(cap, FALSE, cap->arg ? 'V' : 'R', FALSE);
7136 	}
7137     }
7138 }
7139 
7140 /*
7141  * "gr".
7142  */
7143     static void
7144 nv_vreplace(cmdarg_T *cap)
7145 {
7146     if (VIsual_active)
7147     {
7148 	cap->cmdchar = 'r';
7149 	cap->nchar = cap->extra_char;
7150 	nv_replace(cap);	/* Do same as "r" in Visual mode for now */
7151     }
7152     else if (!checkclearopq(cap->oap))
7153     {
7154 	if (!curbuf->b_p_ma)
7155 	    emsg(_(e_modifiable));
7156 	else
7157 	{
7158 	    if (cap->extra_char == Ctrl_V)	/* get another character */
7159 		cap->extra_char = get_literal();
7160 	    stuffcharReadbuff(cap->extra_char);
7161 	    stuffcharReadbuff(ESC);
7162 	    if (virtual_active())
7163 		coladvance(getviscol());
7164 	    invoke_edit(cap, TRUE, 'v', FALSE);
7165 	}
7166     }
7167 }
7168 
7169 /*
7170  * Swap case for "~" command, when it does not work like an operator.
7171  */
7172     static void
7173 n_swapchar(cmdarg_T *cap)
7174 {
7175     long	n;
7176     pos_T	startpos;
7177     int		did_change = 0;
7178 #ifdef FEAT_NETBEANS_INTG
7179     pos_T	pos;
7180     char_u	*ptr;
7181     int		count;
7182 #endif
7183 
7184     if (checkclearopq(cap->oap))
7185 	return;
7186 
7187     if (LINEEMPTY(curwin->w_cursor.lnum) && vim_strchr(p_ww, '~') == NULL)
7188     {
7189 	clearopbeep(cap->oap);
7190 	return;
7191     }
7192 
7193     prep_redo_cmd(cap);
7194 
7195     if (u_save_cursor() == FAIL)
7196 	return;
7197 
7198     startpos = curwin->w_cursor;
7199 #ifdef FEAT_NETBEANS_INTG
7200     pos = startpos;
7201 #endif
7202     for (n = cap->count1; n > 0; --n)
7203     {
7204 	did_change |= swapchar(cap->oap->op_type, &curwin->w_cursor);
7205 	inc_cursor();
7206 	if (gchar_cursor() == NUL)
7207 	{
7208 	    if (vim_strchr(p_ww, '~') != NULL
7209 		    && curwin->w_cursor.lnum < curbuf->b_ml.ml_line_count)
7210 	    {
7211 #ifdef FEAT_NETBEANS_INTG
7212 		if (netbeans_active())
7213 		{
7214 		    if (did_change)
7215 		    {
7216 			ptr = ml_get(pos.lnum);
7217 			count = (int)STRLEN(ptr) - pos.col;
7218 			netbeans_removed(curbuf, pos.lnum, pos.col,
7219 								 (long)count);
7220 			netbeans_inserted(curbuf, pos.lnum, pos.col,
7221 							&ptr[pos.col], count);
7222 		    }
7223 		    pos.col = 0;
7224 		    pos.lnum++;
7225 		}
7226 #endif
7227 		++curwin->w_cursor.lnum;
7228 		curwin->w_cursor.col = 0;
7229 		if (n > 1)
7230 		{
7231 		    if (u_savesub(curwin->w_cursor.lnum) == FAIL)
7232 			break;
7233 		    u_clearline();
7234 		}
7235 	    }
7236 	    else
7237 		break;
7238 	}
7239     }
7240 #ifdef FEAT_NETBEANS_INTG
7241     if (did_change && netbeans_active())
7242     {
7243 	ptr = ml_get(pos.lnum);
7244 	count = curwin->w_cursor.col - pos.col;
7245 	netbeans_removed(curbuf, pos.lnum, pos.col, (long)count);
7246 	netbeans_inserted(curbuf, pos.lnum, pos.col, &ptr[pos.col], count);
7247     }
7248 #endif
7249 
7250 
7251     check_cursor();
7252     curwin->w_set_curswant = TRUE;
7253     if (did_change)
7254     {
7255 	changed_lines(startpos.lnum, startpos.col, curwin->w_cursor.lnum + 1,
7256 									  0L);
7257 	curbuf->b_op_start = startpos;
7258 	curbuf->b_op_end = curwin->w_cursor;
7259 	if (curbuf->b_op_end.col > 0)
7260 	    --curbuf->b_op_end.col;
7261     }
7262 }
7263 
7264 /*
7265  * Move cursor to mark.
7266  */
7267     static void
7268 nv_cursormark(cmdarg_T *cap, int flag, pos_T *pos)
7269 {
7270     if (check_mark(pos) == FAIL)
7271 	clearop(cap->oap);
7272     else
7273     {
7274 	if (cap->cmdchar == '\''
7275 		|| cap->cmdchar == '`'
7276 		|| cap->cmdchar == '['
7277 		|| cap->cmdchar == ']')
7278 	    setpcmark();
7279 	curwin->w_cursor = *pos;
7280 	if (flag)
7281 	    beginline(BL_WHITE | BL_FIX);
7282 	else
7283 	    check_cursor();
7284     }
7285     cap->oap->motion_type = flag ? MLINE : MCHAR;
7286     if (cap->cmdchar == '`')
7287 	cap->oap->use_reg_one = TRUE;
7288     cap->oap->inclusive = FALSE;		/* ignored if not MCHAR */
7289     curwin->w_set_curswant = TRUE;
7290 }
7291 
7292 /*
7293  * Handle commands that are operators in Visual mode.
7294  */
7295     static void
7296 v_visop(cmdarg_T *cap)
7297 {
7298     static char_u trans[] = "YyDdCcxdXdAAIIrr";
7299 
7300     /* Uppercase means linewise, except in block mode, then "D" deletes till
7301      * the end of the line, and "C" replaces till EOL */
7302     if (isupper(cap->cmdchar))
7303     {
7304 	if (VIsual_mode != Ctrl_V)
7305 	{
7306 	    VIsual_mode_orig = VIsual_mode;
7307 	    VIsual_mode = 'V';
7308 	}
7309 	else if (cap->cmdchar == 'C' || cap->cmdchar == 'D')
7310 	    curwin->w_curswant = MAXCOL;
7311     }
7312     cap->cmdchar = *(vim_strchr(trans, cap->cmdchar) + 1);
7313     nv_operator(cap);
7314 }
7315 
7316 /*
7317  * "s" and "S" commands.
7318  */
7319     static void
7320 nv_subst(cmdarg_T *cap)
7321 {
7322 #ifdef FEAT_TERMINAL
7323     /* When showing output of term_dumpdiff() swap the top and botom. */
7324     if (term_swap_diff() == OK)
7325 	return;
7326 #endif
7327 #ifdef FEAT_JOB_CHANNEL
7328     if (bt_prompt(curbuf) && !prompt_curpos_editable())
7329     {
7330 	clearopbeep(cap->oap);
7331 	return;
7332     }
7333 #endif
7334     if (VIsual_active)	/* "vs" and "vS" are the same as "vc" */
7335     {
7336 	if (cap->cmdchar == 'S')
7337 	{
7338 	    VIsual_mode_orig = VIsual_mode;
7339 	    VIsual_mode = 'V';
7340 	}
7341 	cap->cmdchar = 'c';
7342 	nv_operator(cap);
7343     }
7344     else
7345 	nv_optrans(cap);
7346 }
7347 
7348 /*
7349  * Abbreviated commands.
7350  */
7351     static void
7352 nv_abbrev(cmdarg_T *cap)
7353 {
7354     if (cap->cmdchar == K_DEL || cap->cmdchar == K_KDEL)
7355 	cap->cmdchar = 'x';		/* DEL key behaves like 'x' */
7356 
7357     /* in Visual mode these commands are operators */
7358     if (VIsual_active)
7359 	v_visop(cap);
7360     else
7361 	nv_optrans(cap);
7362 }
7363 
7364 /*
7365  * Translate a command into another command.
7366  */
7367     static void
7368 nv_optrans(cmdarg_T *cap)
7369 {
7370     static char_u *(ar[8]) = {(char_u *)"dl", (char_u *)"dh",
7371 			      (char_u *)"d$", (char_u *)"c$",
7372 			      (char_u *)"cl", (char_u *)"cc",
7373 			      (char_u *)"yy", (char_u *)":s\r"};
7374     static char_u *str = (char_u *)"xXDCsSY&";
7375 
7376     if (!checkclearopq(cap->oap))
7377     {
7378 	/* In Vi "2D" doesn't delete the next line.  Can't translate it
7379 	 * either, because "2." should also not use the count. */
7380 	if (cap->cmdchar == 'D' && vim_strchr(p_cpo, CPO_HASH) != NULL)
7381 	{
7382 	    cap->oap->start = curwin->w_cursor;
7383 	    cap->oap->op_type = OP_DELETE;
7384 #ifdef FEAT_EVAL
7385 	    set_op_var(OP_DELETE);
7386 #endif
7387 	    cap->count1 = 1;
7388 	    nv_dollar(cap);
7389 	    finish_op = TRUE;
7390 	    ResetRedobuff();
7391 	    AppendCharToRedobuff('D');
7392 	}
7393 	else
7394 	{
7395 	    if (cap->count0)
7396 		stuffnumReadbuff(cap->count0);
7397 	    stuffReadbuff(ar[(int)(vim_strchr(str, cap->cmdchar) - str)]);
7398 	}
7399     }
7400     cap->opcount = 0;
7401 }
7402 
7403 /*
7404  * "'" and "`" commands.  Also for "g'" and "g`".
7405  * cap->arg is TRUE for "'" and "g'".
7406  */
7407     static void
7408 nv_gomark(cmdarg_T *cap)
7409 {
7410     pos_T	*pos;
7411     int		c;
7412 #ifdef FEAT_FOLDING
7413     pos_T	old_cursor = curwin->w_cursor;
7414     int		old_KeyTyped = KeyTyped;    /* getting file may reset it */
7415 #endif
7416 
7417     if (cap->cmdchar == 'g')
7418 	c = cap->extra_char;
7419     else
7420 	c = cap->nchar;
7421     pos = getmark(c, (cap->oap->op_type == OP_NOP));
7422     if (pos == (pos_T *)-1)	    /* jumped to other file */
7423     {
7424 	if (cap->arg)
7425 	{
7426 	    check_cursor_lnum();
7427 	    beginline(BL_WHITE | BL_FIX);
7428 	}
7429 	else
7430 	    check_cursor();
7431     }
7432     else
7433 	nv_cursormark(cap, cap->arg, pos);
7434 
7435     /* May need to clear the coladd that a mark includes. */
7436     if (!virtual_active())
7437 	curwin->w_cursor.coladd = 0;
7438     check_cursor_col();
7439 #ifdef FEAT_FOLDING
7440     if (cap->oap->op_type == OP_NOP
7441 	    && pos != NULL
7442 	    && (pos == (pos_T *)-1 || !EQUAL_POS(old_cursor, *pos))
7443 	    && (fdo_flags & FDO_MARK)
7444 	    && old_KeyTyped)
7445 	foldOpenCursor();
7446 #endif
7447 }
7448 
7449 /*
7450  * Handle CTRL-O, CTRL-I, "g;" and "g," commands.
7451  */
7452     static void
7453 nv_pcmark(cmdarg_T *cap)
7454 {
7455 #ifdef FEAT_JUMPLIST
7456     pos_T	*pos;
7457 # ifdef FEAT_FOLDING
7458     linenr_T	lnum = curwin->w_cursor.lnum;
7459     int		old_KeyTyped = KeyTyped;    /* getting file may reset it */
7460 # endif
7461 
7462     if (!checkclearopq(cap->oap))
7463     {
7464 	if (cap->cmdchar == 'g')
7465 	    pos = movechangelist((int)cap->count1);
7466 	else
7467 	    pos = movemark((int)cap->count1);
7468 	if (pos == (pos_T *)-1)		/* jump to other file */
7469 	{
7470 	    curwin->w_set_curswant = TRUE;
7471 	    check_cursor();
7472 	}
7473 	else if (pos != NULL)		    /* can jump */
7474 	    nv_cursormark(cap, FALSE, pos);
7475 	else if (cap->cmdchar == 'g')
7476 	{
7477 	    if (curbuf->b_changelistlen == 0)
7478 		emsg(_("E664: changelist is empty"));
7479 	    else if (cap->count1 < 0)
7480 		emsg(_("E662: At start of changelist"));
7481 	    else
7482 		emsg(_("E663: At end of changelist"));
7483 	}
7484 	else
7485 	    clearopbeep(cap->oap);
7486 # ifdef FEAT_FOLDING
7487 	if (cap->oap->op_type == OP_NOP
7488 		&& (pos == (pos_T *)-1 || lnum != curwin->w_cursor.lnum)
7489 		&& (fdo_flags & FDO_MARK)
7490 		&& old_KeyTyped)
7491 	    foldOpenCursor();
7492 # endif
7493     }
7494 #else
7495     clearopbeep(cap->oap);
7496 #endif
7497 }
7498 
7499 /*
7500  * Handle '"' command.
7501  */
7502     static void
7503 nv_regname(cmdarg_T *cap)
7504 {
7505     if (checkclearop(cap->oap))
7506 	return;
7507 #ifdef FEAT_EVAL
7508     if (cap->nchar == '=')
7509 	cap->nchar = get_expr_register();
7510 #endif
7511     if (cap->nchar != NUL && valid_yank_reg(cap->nchar, FALSE))
7512     {
7513 	cap->oap->regname = cap->nchar;
7514 	cap->opcount = cap->count0;	/* remember count before '"' */
7515 #ifdef FEAT_EVAL
7516 	set_reg_var(cap->oap->regname);
7517 #endif
7518     }
7519     else
7520 	clearopbeep(cap->oap);
7521 }
7522 
7523 /*
7524  * Handle "v", "V" and "CTRL-V" commands.
7525  * Also for "gh", "gH" and "g^H" commands: Always start Select mode, cap->arg
7526  * is TRUE.
7527  * Handle CTRL-Q just like CTRL-V.
7528  */
7529     static void
7530 nv_visual(cmdarg_T *cap)
7531 {
7532     if (cap->cmdchar == Ctrl_Q)
7533 	cap->cmdchar = Ctrl_V;
7534 
7535     /* 'v', 'V' and CTRL-V can be used while an operator is pending to make it
7536      * characterwise, linewise, or blockwise. */
7537     if (cap->oap->op_type != OP_NOP)
7538     {
7539 	motion_force = cap->oap->motion_force = cap->cmdchar;
7540 	finish_op = FALSE;	/* operator doesn't finish now but later */
7541 	return;
7542     }
7543 
7544     VIsual_select = cap->arg;
7545     if (VIsual_active)	    /* change Visual mode */
7546     {
7547 	if (VIsual_mode == cap->cmdchar)    /* stop visual mode */
7548 	    end_visual_mode();
7549 	else				    /* toggle char/block mode */
7550 	{				    /*	   or char/line mode */
7551 	    VIsual_mode = cap->cmdchar;
7552 	    showmode();
7553 	}
7554 	redraw_curbuf_later(INVERTED);	    /* update the inversion */
7555     }
7556     else		    /* start Visual mode */
7557     {
7558 	check_visual_highlight();
7559 	if (cap->count0 > 0 && resel_VIsual_mode != NUL)
7560 	{
7561 	    /* use previously selected part */
7562 	    VIsual = curwin->w_cursor;
7563 
7564 	    VIsual_active = TRUE;
7565 	    VIsual_reselect = TRUE;
7566 	    if (!cap->arg)
7567 		/* start Select mode when 'selectmode' contains "cmd" */
7568 		may_start_select('c');
7569 #ifdef FEAT_MOUSE
7570 	    setmouse();
7571 #endif
7572 	    if (p_smd && msg_silent == 0)
7573 		redraw_cmdline = TRUE;	    /* show visual mode later */
7574 	    /*
7575 	     * For V and ^V, we multiply the number of lines even if there
7576 	     * was only one -- webb
7577 	     */
7578 	    if (resel_VIsual_mode != 'v' || resel_VIsual_line_count > 1)
7579 	    {
7580 		curwin->w_cursor.lnum +=
7581 				    resel_VIsual_line_count * cap->count0 - 1;
7582 		if (curwin->w_cursor.lnum > curbuf->b_ml.ml_line_count)
7583 		    curwin->w_cursor.lnum = curbuf->b_ml.ml_line_count;
7584 	    }
7585 	    VIsual_mode = resel_VIsual_mode;
7586 	    if (VIsual_mode == 'v')
7587 	    {
7588 		if (resel_VIsual_line_count <= 1)
7589 		{
7590 		    validate_virtcol();
7591 		    curwin->w_curswant = curwin->w_virtcol
7592 					+ resel_VIsual_vcol * cap->count0 - 1;
7593 		}
7594 		else
7595 		    curwin->w_curswant = resel_VIsual_vcol;
7596 		coladvance(curwin->w_curswant);
7597 	    }
7598 	    if (resel_VIsual_vcol == MAXCOL)
7599 	    {
7600 		curwin->w_curswant = MAXCOL;
7601 		coladvance((colnr_T)MAXCOL);
7602 	    }
7603 	    else if (VIsual_mode == Ctrl_V)
7604 	    {
7605 		validate_virtcol();
7606 		curwin->w_curswant = curwin->w_virtcol
7607 					+ resel_VIsual_vcol * cap->count0 - 1;
7608 		coladvance(curwin->w_curswant);
7609 	    }
7610 	    else
7611 		curwin->w_set_curswant = TRUE;
7612 	    redraw_curbuf_later(INVERTED);	/* show the inversion */
7613 	}
7614 	else
7615 	{
7616 	    if (!cap->arg)
7617 		/* start Select mode when 'selectmode' contains "cmd" */
7618 		may_start_select('c');
7619 	    n_start_visual_mode(cap->cmdchar);
7620 	    if (VIsual_mode != 'V' && *p_sel == 'e')
7621 		++cap->count1;  /* include one more char */
7622 	    if (cap->count0 > 0 && --cap->count1 > 0)
7623 	    {
7624 		/* With a count select that many characters or lines. */
7625 		if (VIsual_mode == 'v' || VIsual_mode == Ctrl_V)
7626 		    nv_right(cap);
7627 		else if (VIsual_mode == 'V')
7628 		    nv_down(cap);
7629 	    }
7630 	}
7631     }
7632 }
7633 
7634 /*
7635  * Start selection for Shift-movement keys.
7636  */
7637     void
7638 start_selection(void)
7639 {
7640     /* if 'selectmode' contains "key", start Select mode */
7641     may_start_select('k');
7642     n_start_visual_mode('v');
7643 }
7644 
7645 /*
7646  * Start Select mode, if "c" is in 'selectmode' and not in a mapping or menu.
7647  */
7648     void
7649 may_start_select(int c)
7650 {
7651     VIsual_select = (stuff_empty() && typebuf_typed()
7652 		    && (vim_strchr(p_slm, c) != NULL));
7653 }
7654 
7655 /*
7656  * Start Visual mode "c".
7657  * Should set VIsual_select before calling this.
7658  */
7659     static void
7660 n_start_visual_mode(int c)
7661 {
7662 #ifdef FEAT_CONCEAL
7663     /* Check for redraw before changing the state. */
7664     conceal_check_cursor_line();
7665 #endif
7666 
7667     VIsual_mode = c;
7668     VIsual_active = TRUE;
7669     VIsual_reselect = TRUE;
7670 
7671     // Corner case: the 0 position in a tab may change when going into
7672     // virtualedit.  Recalculate curwin->w_cursor to avoid bad hilighting.
7673     if (c == Ctrl_V && (ve_flags & VE_BLOCK) && gchar_cursor() == TAB)
7674     {
7675 	validate_virtcol();
7676 	coladvance(curwin->w_virtcol);
7677     }
7678     VIsual = curwin->w_cursor;
7679 
7680 #ifdef FEAT_FOLDING
7681     foldAdjustVisual();
7682 #endif
7683 
7684 #ifdef FEAT_MOUSE
7685     setmouse();
7686 #endif
7687 #ifdef FEAT_CONCEAL
7688     /* Check for redraw after changing the state. */
7689     conceal_check_cursor_line();
7690 #endif
7691 
7692     if (p_smd && msg_silent == 0)
7693 	redraw_cmdline = TRUE;	/* show visual mode later */
7694 #ifdef FEAT_CLIPBOARD
7695     /* Make sure the clipboard gets updated.  Needed because start and
7696      * end may still be the same, and the selection needs to be owned */
7697     clip_star.vmode = NUL;
7698 #endif
7699 
7700     /* Only need to redraw this line, unless still need to redraw an old
7701      * Visual area (when 'lazyredraw' is set). */
7702     if (curwin->w_redr_type < INVERTED)
7703     {
7704 	curwin->w_old_cursor_lnum = curwin->w_cursor.lnum;
7705 	curwin->w_old_visual_lnum = curwin->w_cursor.lnum;
7706     }
7707 }
7708 
7709 
7710 /*
7711  * CTRL-W: Window commands
7712  */
7713     static void
7714 nv_window(cmdarg_T *cap)
7715 {
7716     if (cap->nchar == ':')
7717     {
7718 	/* "CTRL-W :" is the same as typing ":"; useful in a terminal window */
7719 	cap->cmdchar = ':';
7720 	cap->nchar = NUL;
7721 	nv_colon(cap);
7722     }
7723     else if (!checkclearop(cap->oap))
7724 	do_window(cap->nchar, cap->count0, NUL); /* everything is in window.c */
7725 }
7726 
7727 /*
7728  * CTRL-Z: Suspend
7729  */
7730     static void
7731 nv_suspend(cmdarg_T *cap)
7732 {
7733     clearop(cap->oap);
7734     if (VIsual_active)
7735 	end_visual_mode();		/* stop Visual mode */
7736     do_cmdline_cmd((char_u *)"st");
7737 }
7738 
7739 /*
7740  * Commands starting with "g".
7741  */
7742     static void
7743 nv_g_cmd(cmdarg_T *cap)
7744 {
7745     oparg_T	*oap = cap->oap;
7746     pos_T	tpos;
7747     int		i;
7748     int		flag = FALSE;
7749 
7750     switch (cap->nchar)
7751     {
7752     case Ctrl_A:
7753     case Ctrl_X:
7754 #ifdef MEM_PROFILE
7755     /*
7756      * "g^A": dump log of used memory.
7757      */
7758 	if (!VIsual_active && cap->nchar == Ctrl_A)
7759 	    vim_mem_profile_dump();
7760 	else
7761 #endif
7762     /*
7763      * "g^A/g^X": sequentially increment visually selected region
7764      */
7765 	     if (VIsual_active)
7766 	{
7767 	    cap->arg = TRUE;
7768 	    cap->cmdchar = cap->nchar;
7769 	    cap->nchar = NUL;
7770 	    nv_addsub(cap);
7771 	}
7772 	else
7773 	    clearopbeep(oap);
7774 	break;
7775 
7776     /*
7777      * "gR": Enter virtual replace mode.
7778      */
7779     case 'R':
7780 	cap->arg = TRUE;
7781 	nv_Replace(cap);
7782 	break;
7783 
7784     case 'r':
7785 	nv_vreplace(cap);
7786 	break;
7787 
7788     case '&':
7789 	do_cmdline_cmd((char_u *)"%s//~/&");
7790 	break;
7791 
7792     /*
7793      * "gv": Reselect the previous Visual area.  If Visual already active,
7794      *	     exchange previous and current Visual area.
7795      */
7796     case 'v':
7797 	if (checkclearop(oap))
7798 	    break;
7799 
7800 	if (	   curbuf->b_visual.vi_start.lnum == 0
7801 		|| curbuf->b_visual.vi_start.lnum > curbuf->b_ml.ml_line_count
7802 		|| curbuf->b_visual.vi_end.lnum == 0)
7803 	    beep_flush();
7804 	else
7805 	{
7806 	    /* set w_cursor to the start of the Visual area, tpos to the end */
7807 	    if (VIsual_active)
7808 	    {
7809 		i = VIsual_mode;
7810 		VIsual_mode = curbuf->b_visual.vi_mode;
7811 		curbuf->b_visual.vi_mode = i;
7812 # ifdef FEAT_EVAL
7813 		curbuf->b_visual_mode_eval = i;
7814 # endif
7815 		i = curwin->w_curswant;
7816 		curwin->w_curswant = curbuf->b_visual.vi_curswant;
7817 		curbuf->b_visual.vi_curswant = i;
7818 
7819 		tpos = curbuf->b_visual.vi_end;
7820 		curbuf->b_visual.vi_end = curwin->w_cursor;
7821 		curwin->w_cursor = curbuf->b_visual.vi_start;
7822 		curbuf->b_visual.vi_start = VIsual;
7823 	    }
7824 	    else
7825 	    {
7826 		VIsual_mode = curbuf->b_visual.vi_mode;
7827 		curwin->w_curswant = curbuf->b_visual.vi_curswant;
7828 		tpos = curbuf->b_visual.vi_end;
7829 		curwin->w_cursor = curbuf->b_visual.vi_start;
7830 	    }
7831 
7832 	    VIsual_active = TRUE;
7833 	    VIsual_reselect = TRUE;
7834 
7835 	    /* Set Visual to the start and w_cursor to the end of the Visual
7836 	     * area.  Make sure they are on an existing character. */
7837 	    check_cursor();
7838 	    VIsual = curwin->w_cursor;
7839 	    curwin->w_cursor = tpos;
7840 	    check_cursor();
7841 	    update_topline();
7842 	    /*
7843 	     * When called from normal "g" command: start Select mode when
7844 	     * 'selectmode' contains "cmd".  When called for K_SELECT, always
7845 	     * start Select mode.
7846 	     */
7847 	    if (cap->arg)
7848 		VIsual_select = TRUE;
7849 	    else
7850 		may_start_select('c');
7851 #ifdef FEAT_MOUSE
7852 	    setmouse();
7853 #endif
7854 #ifdef FEAT_CLIPBOARD
7855 	    /* Make sure the clipboard gets updated.  Needed because start and
7856 	     * end are still the same, and the selection needs to be owned */
7857 	    clip_star.vmode = NUL;
7858 #endif
7859 	    redraw_curbuf_later(INVERTED);
7860 	    showmode();
7861 	}
7862 	break;
7863     /*
7864      * "gV": Don't reselect the previous Visual area after a Select mode
7865      *	     mapping of menu.
7866      */
7867     case 'V':
7868 	VIsual_reselect = FALSE;
7869 	break;
7870 
7871     /*
7872      * "gh":  start Select mode.
7873      * "gH":  start Select line mode.
7874      * "g^H": start Select block mode.
7875      */
7876     case K_BS:
7877 	cap->nchar = Ctrl_H;
7878 	/* FALLTHROUGH */
7879     case 'h':
7880     case 'H':
7881     case Ctrl_H:
7882 # ifdef EBCDIC
7883 	/* EBCDIC: 'v'-'h' != '^v'-'^h' */
7884 	if (cap->nchar == Ctrl_H)
7885 	    cap->cmdchar = Ctrl_V;
7886 	else
7887 # endif
7888 	cap->cmdchar = cap->nchar + ('v' - 'h');
7889 	cap->arg = TRUE;
7890 	nv_visual(cap);
7891 	break;
7892 
7893     /* "gn", "gN" visually select next/previous search match
7894      * "gn" selects next match
7895      * "gN" selects previous match
7896      */
7897     case 'N':
7898     case 'n':
7899 	if (!current_search(cap->count1, cap->nchar == 'n'))
7900 	    clearopbeep(oap);
7901 	break;
7902 
7903     /*
7904      * "gj" and "gk" two new funny movement keys -- up and down
7905      * movement based on *screen* line rather than *file* line.
7906      */
7907     case 'j':
7908     case K_DOWN:
7909 	/* with 'nowrap' it works just like the normal "j" command; also when
7910 	 * in a closed fold */
7911 	if (!curwin->w_p_wrap
7912 #ifdef FEAT_FOLDING
7913 		|| hasFolding(curwin->w_cursor.lnum, NULL, NULL)
7914 #endif
7915 		)
7916 	{
7917 	    oap->motion_type = MLINE;
7918 	    i = cursor_down(cap->count1, oap->op_type == OP_NOP);
7919 	}
7920 	else
7921 	    i = nv_screengo(oap, FORWARD, cap->count1);
7922 	if (i == FAIL)
7923 	    clearopbeep(oap);
7924 	break;
7925 
7926     case 'k':
7927     case K_UP:
7928 	/* with 'nowrap' it works just like the normal "k" command; also when
7929 	 * in a closed fold */
7930 	if (!curwin->w_p_wrap
7931 #ifdef FEAT_FOLDING
7932 		|| hasFolding(curwin->w_cursor.lnum, NULL, NULL)
7933 #endif
7934 	   )
7935 	{
7936 	    oap->motion_type = MLINE;
7937 	    i = cursor_up(cap->count1, oap->op_type == OP_NOP);
7938 	}
7939 	else
7940 	    i = nv_screengo(oap, BACKWARD, cap->count1);
7941 	if (i == FAIL)
7942 	    clearopbeep(oap);
7943 	break;
7944 
7945     /*
7946      * "gJ": join two lines without inserting a space.
7947      */
7948     case 'J':
7949 	nv_join(cap);
7950 	break;
7951 
7952     /*
7953      * "g0", "g^" and "g$": Like "0", "^" and "$" but for screen lines.
7954      * "gm": middle of "g0" and "g$".
7955      */
7956     case '^':
7957 	flag = TRUE;
7958 	/* FALLTHROUGH */
7959 
7960     case '0':
7961     case 'm':
7962     case K_HOME:
7963     case K_KHOME:
7964 	oap->motion_type = MCHAR;
7965 	oap->inclusive = FALSE;
7966 	if (curwin->w_p_wrap && curwin->w_width != 0)
7967 	{
7968 	    int		width1 = curwin->w_width - curwin_col_off();
7969 	    int		width2 = width1 + curwin_col_off2();
7970 
7971 	    validate_virtcol();
7972 	    i = 0;
7973 	    if (curwin->w_virtcol >= (colnr_T)width1 && width2 > 0)
7974 		i = (curwin->w_virtcol - width1) / width2 * width2 + width1;
7975 	}
7976 	else
7977 	    i = curwin->w_leftcol;
7978 	/* Go to the middle of the screen line.  When 'number' or
7979 	 * 'relativenumber' is on and lines are wrapping the middle can be more
7980 	 * to the left. */
7981 	if (cap->nchar == 'm')
7982 	    i += (curwin->w_width - curwin_col_off()
7983 		    + ((curwin->w_p_wrap && i > 0)
7984 			? curwin_col_off2() : 0)) / 2;
7985 	coladvance((colnr_T)i);
7986 	if (flag)
7987 	{
7988 	    do
7989 		i = gchar_cursor();
7990 	    while (VIM_ISWHITE(i) && oneright() == OK);
7991 	    curwin->w_valid &= ~VALID_WCOL;
7992 	}
7993 	curwin->w_set_curswant = TRUE;
7994 	break;
7995 
7996     case '_':
7997 	/* "g_": to the last non-blank character in the line or <count> lines
7998 	 * downward. */
7999 	cap->oap->motion_type = MCHAR;
8000 	cap->oap->inclusive = TRUE;
8001 	curwin->w_curswant = MAXCOL;
8002 	if (cursor_down((long)(cap->count1 - 1),
8003 					 cap->oap->op_type == OP_NOP) == FAIL)
8004 	    clearopbeep(cap->oap);
8005 	else
8006 	{
8007 	    char_u  *ptr = ml_get_curline();
8008 
8009 	    /* In Visual mode we may end up after the line. */
8010 	    if (curwin->w_cursor.col > 0 && ptr[curwin->w_cursor.col] == NUL)
8011 		--curwin->w_cursor.col;
8012 
8013 	    /* Decrease the cursor column until it's on a non-blank. */
8014 	    while (curwin->w_cursor.col > 0
8015 				    && VIM_ISWHITE(ptr[curwin->w_cursor.col]))
8016 		--curwin->w_cursor.col;
8017 	    curwin->w_set_curswant = TRUE;
8018 	    adjust_for_sel(cap);
8019 	}
8020 	break;
8021 
8022     case '$':
8023     case K_END:
8024     case K_KEND:
8025 	{
8026 	    int col_off = curwin_col_off();
8027 
8028 	    oap->motion_type = MCHAR;
8029 	    oap->inclusive = TRUE;
8030 	    if (curwin->w_p_wrap && curwin->w_width != 0)
8031 	    {
8032 		curwin->w_curswant = MAXCOL;    /* so we stay at the end */
8033 		if (cap->count1 == 1)
8034 		{
8035 		    int		width1 = curwin->w_width - col_off;
8036 		    int		width2 = width1 + curwin_col_off2();
8037 
8038 		    validate_virtcol();
8039 		    i = width1 - 1;
8040 		    if (curwin->w_virtcol >= (colnr_T)width1)
8041 			i += ((curwin->w_virtcol - width1) / width2 + 1)
8042 								     * width2;
8043 		    coladvance((colnr_T)i);
8044 
8045 		    /* Make sure we stick in this column. */
8046 		    validate_virtcol();
8047 		    curwin->w_curswant = curwin->w_virtcol;
8048 		    curwin->w_set_curswant = FALSE;
8049 		    if (curwin->w_cursor.col > 0 && curwin->w_p_wrap)
8050 		    {
8051 			/*
8052 			 * Check for landing on a character that got split at
8053 			 * the end of the line.  We do not want to advance to
8054 			 * the next screen line.
8055 			 */
8056 			if (curwin->w_virtcol > (colnr_T)i)
8057 			    --curwin->w_cursor.col;
8058 		    }
8059 		}
8060 		else if (nv_screengo(oap, FORWARD, cap->count1 - 1) == FAIL)
8061 		    clearopbeep(oap);
8062 	    }
8063 	    else
8064 	    {
8065 		i = curwin->w_leftcol + curwin->w_width - col_off - 1;
8066 		coladvance((colnr_T)i);
8067 
8068 		/* Make sure we stick in this column. */
8069 		validate_virtcol();
8070 		curwin->w_curswant = curwin->w_virtcol;
8071 		curwin->w_set_curswant = FALSE;
8072 	    }
8073 	}
8074 	break;
8075 
8076     /*
8077      * "g*" and "g#", like "*" and "#" but without using "\<" and "\>"
8078      */
8079     case '*':
8080     case '#':
8081 #if POUND != '#'
8082     case POUND:		/* pound sign (sometimes equal to '#') */
8083 #endif
8084     case Ctrl_RSB:		/* :tag or :tselect for current identifier */
8085     case ']':			/* :tselect for current identifier */
8086 	nv_ident(cap);
8087 	break;
8088 
8089     /*
8090      * ge and gE: go back to end of word
8091      */
8092     case 'e':
8093     case 'E':
8094 	oap->motion_type = MCHAR;
8095 	curwin->w_set_curswant = TRUE;
8096 	oap->inclusive = TRUE;
8097 	if (bckend_word(cap->count1, cap->nchar == 'E', FALSE) == FAIL)
8098 	    clearopbeep(oap);
8099 	break;
8100 
8101     /*
8102      * "g CTRL-G": display info about cursor position
8103      */
8104     case Ctrl_G:
8105 	cursor_pos_info(NULL);
8106 	break;
8107 
8108     /*
8109      * "gi": start Insert at the last position.
8110      */
8111     case 'i':
8112 	if (curbuf->b_last_insert.lnum != 0)
8113 	{
8114 	    curwin->w_cursor = curbuf->b_last_insert;
8115 	    check_cursor_lnum();
8116 	    i = (int)STRLEN(ml_get_curline());
8117 	    if (curwin->w_cursor.col > (colnr_T)i)
8118 	    {
8119 		if (virtual_active())
8120 		    curwin->w_cursor.coladd += curwin->w_cursor.col - i;
8121 		curwin->w_cursor.col = i;
8122 	    }
8123 	}
8124 	cap->cmdchar = 'i';
8125 	nv_edit(cap);
8126 	break;
8127 
8128     /*
8129      * "gI": Start insert in column 1.
8130      */
8131     case 'I':
8132 	beginline(0);
8133 	if (!checkclearopq(oap))
8134 	    invoke_edit(cap, FALSE, 'g', FALSE);
8135 	break;
8136 
8137 #ifdef FEAT_SEARCHPATH
8138     /*
8139      * "gf": goto file, edit file under cursor
8140      * "]f" and "[f": can also be used.
8141      */
8142     case 'f':
8143     case 'F':
8144 	nv_gotofile(cap);
8145 	break;
8146 #endif
8147 
8148 	/* "g'm" and "g`m": jump to mark without setting pcmark */
8149     case '\'':
8150 	cap->arg = TRUE;
8151 	/* FALLTHROUGH */
8152     case '`':
8153 	nv_gomark(cap);
8154 	break;
8155 
8156     /*
8157      * "gs": Goto sleep.
8158      */
8159     case 's':
8160 	do_sleep(cap->count1 * 1000L);
8161 	break;
8162 
8163     /*
8164      * "ga": Display the ascii value of the character under the
8165      * cursor.	It is displayed in decimal, hex, and octal. -- webb
8166      */
8167     case 'a':
8168 	do_ascii(NULL);
8169 	break;
8170 
8171     /*
8172      * "g8": Display the bytes used for the UTF-8 character under the
8173      * cursor.	It is displayed in hex.
8174      * "8g8" finds illegal byte sequence.
8175      */
8176     case '8':
8177 	if (cap->count0 == 8)
8178 	    utf_find_illegal();
8179 	else
8180 	    show_utf8();
8181 	break;
8182 
8183     /* "g<": show scrollback text */
8184     case '<':
8185 	show_sb_text();
8186 	break;
8187 
8188     /*
8189      * "gg": Goto the first line in file.  With a count it goes to
8190      * that line number like for "G". -- webb
8191      */
8192     case 'g':
8193 	cap->arg = FALSE;
8194 	nv_goto(cap);
8195 	break;
8196 
8197     /*
8198      *	 Two-character operators:
8199      *	 "gq"	    Format text
8200      *	 "gw"	    Format text and keep cursor position
8201      *	 "g~"	    Toggle the case of the text.
8202      *	 "gu"	    Change text to lower case.
8203      *	 "gU"	    Change text to upper case.
8204      *   "g?"	    rot13 encoding
8205      *   "g@"	    call 'operatorfunc'
8206      */
8207     case 'q':
8208     case 'w':
8209 	oap->cursor_start = curwin->w_cursor;
8210 	/* FALLTHROUGH */
8211     case '~':
8212     case 'u':
8213     case 'U':
8214     case '?':
8215     case '@':
8216 	nv_operator(cap);
8217 	break;
8218 
8219     /*
8220      * "gd": Find first occurrence of pattern under the cursor in the
8221      *	 current function
8222      * "gD": idem, but in the current file.
8223      */
8224     case 'd':
8225     case 'D':
8226 	nv_gd(oap, cap->nchar, (int)cap->count0);
8227 	break;
8228 
8229 #ifdef FEAT_MOUSE
8230     /*
8231      * g<*Mouse> : <C-*mouse>
8232      */
8233     case K_MIDDLEMOUSE:
8234     case K_MIDDLEDRAG:
8235     case K_MIDDLERELEASE:
8236     case K_LEFTMOUSE:
8237     case K_LEFTDRAG:
8238     case K_LEFTRELEASE:
8239     case K_MOUSEMOVE:
8240     case K_RIGHTMOUSE:
8241     case K_RIGHTDRAG:
8242     case K_RIGHTRELEASE:
8243     case K_X1MOUSE:
8244     case K_X1DRAG:
8245     case K_X1RELEASE:
8246     case K_X2MOUSE:
8247     case K_X2DRAG:
8248     case K_X2RELEASE:
8249 	mod_mask = MOD_MASK_CTRL;
8250 	(void)do_mouse(oap, cap->nchar, BACKWARD, cap->count1, 0);
8251 	break;
8252 #endif
8253 
8254     case K_IGNORE:
8255 	break;
8256 
8257     /*
8258      * "gP" and "gp": same as "P" and "p" but leave cursor just after new text
8259      */
8260     case 'p':
8261     case 'P':
8262 	nv_put(cap);
8263 	break;
8264 
8265 #ifdef FEAT_BYTEOFF
8266     /* "go": goto byte count from start of buffer */
8267     case 'o':
8268 	goto_byte(cap->count0);
8269 	break;
8270 #endif
8271 
8272     /* "gQ": improved Ex mode */
8273     case 'Q':
8274 	if (text_locked())
8275 	{
8276 	    clearopbeep(cap->oap);
8277 	    text_locked_msg();
8278 	    break;
8279 	}
8280 
8281 	if (!checkclearopq(oap))
8282 	    do_exmode(TRUE);
8283 	break;
8284 
8285 #ifdef FEAT_JUMPLIST
8286     case ',':
8287 	nv_pcmark(cap);
8288 	break;
8289 
8290     case ';':
8291 	cap->count1 = -cap->count1;
8292 	nv_pcmark(cap);
8293 	break;
8294 #endif
8295 
8296     case 't':
8297 	if (!checkclearop(oap))
8298 	    goto_tabpage((int)cap->count0);
8299 	break;
8300     case 'T':
8301 	if (!checkclearop(oap))
8302 	    goto_tabpage(-(int)cap->count1);
8303 	break;
8304 
8305     case '+':
8306     case '-': /* "g+" and "g-": undo or redo along the timeline */
8307 	if (!checkclearopq(oap))
8308 	    undo_time(cap->nchar == '-' ? -cap->count1 : cap->count1,
8309 							 FALSE, FALSE, FALSE);
8310 	break;
8311 
8312     default:
8313 	clearopbeep(oap);
8314 	break;
8315     }
8316 }
8317 
8318 /*
8319  * Handle "o" and "O" commands.
8320  */
8321     static void
8322 n_opencmd(cmdarg_T *cap)
8323 {
8324 #ifdef FEAT_CONCEAL
8325     linenr_T	oldline = curwin->w_cursor.lnum;
8326 #endif
8327 
8328     if (!checkclearopq(cap->oap))
8329     {
8330 #ifdef FEAT_FOLDING
8331 	if (cap->cmdchar == 'O')
8332 	    /* Open above the first line of a folded sequence of lines */
8333 	    (void)hasFolding(curwin->w_cursor.lnum,
8334 						&curwin->w_cursor.lnum, NULL);
8335 	else
8336 	    /* Open below the last line of a folded sequence of lines */
8337 	    (void)hasFolding(curwin->w_cursor.lnum,
8338 						NULL, &curwin->w_cursor.lnum);
8339 #endif
8340 	if (u_save((linenr_T)(curwin->w_cursor.lnum -
8341 					       (cap->cmdchar == 'O' ? 1 : 0)),
8342 		   (linenr_T)(curwin->w_cursor.lnum +
8343 					       (cap->cmdchar == 'o' ? 1 : 0))
8344 		       ) == OK
8345 		&& open_line(cap->cmdchar == 'O' ? BACKWARD : FORWARD,
8346 #ifdef FEAT_COMMENTS
8347 		    has_format_option(FO_OPEN_COMS) ? OPENLINE_DO_COM :
8348 #endif
8349 		    0, 0) == OK)
8350 	{
8351 #ifdef FEAT_CONCEAL
8352 	    if (curwin->w_p_cole > 0 && oldline != curwin->w_cursor.lnum)
8353 		redrawWinline(curwin, oldline);
8354 #endif
8355 #ifdef FEAT_SYN_HL
8356 	    if (curwin->w_p_cul)
8357 		/* force redraw of cursorline */
8358 		curwin->w_valid &= ~VALID_CROW;
8359 #endif
8360 	    /* When '#' is in 'cpoptions' ignore the count. */
8361 	    if (vim_strchr(p_cpo, CPO_HASH) != NULL)
8362 		cap->count1 = 1;
8363 	    invoke_edit(cap, FALSE, cap->cmdchar, TRUE);
8364 	}
8365     }
8366 }
8367 
8368 /*
8369  * "." command: redo last change.
8370  */
8371     static void
8372 nv_dot(cmdarg_T *cap)
8373 {
8374     if (!checkclearopq(cap->oap))
8375     {
8376 	/*
8377 	 * If "restart_edit" is TRUE, the last but one command is repeated
8378 	 * instead of the last command (inserting text). This is used for
8379 	 * CTRL-O <.> in insert mode.
8380 	 */
8381 	if (start_redo(cap->count0, restart_edit != 0 && !arrow_used) == FAIL)
8382 	    clearopbeep(cap->oap);
8383     }
8384 }
8385 
8386 /*
8387  * CTRL-R: undo undo
8388  */
8389     static void
8390 nv_redo(cmdarg_T *cap)
8391 {
8392     if (!checkclearopq(cap->oap))
8393     {
8394 	u_redo((int)cap->count1);
8395 	curwin->w_set_curswant = TRUE;
8396     }
8397 }
8398 
8399 /*
8400  * Handle "U" command.
8401  */
8402     static void
8403 nv_Undo(cmdarg_T *cap)
8404 {
8405     /* In Visual mode and typing "gUU" triggers an operator */
8406     if (cap->oap->op_type == OP_UPPER || VIsual_active)
8407     {
8408 	/* translate "gUU" to "gUgU" */
8409 	cap->cmdchar = 'g';
8410 	cap->nchar = 'U';
8411 	nv_operator(cap);
8412     }
8413     else if (!checkclearopq(cap->oap))
8414     {
8415 	u_undoline();
8416 	curwin->w_set_curswant = TRUE;
8417     }
8418 }
8419 
8420 /*
8421  * '~' command: If tilde is not an operator and Visual is off: swap case of a
8422  * single character.
8423  */
8424     static void
8425 nv_tilde(cmdarg_T *cap)
8426 {
8427     if (!p_to && !VIsual_active && cap->oap->op_type != OP_TILDE)
8428     {
8429 #ifdef FEAT_JOB_CHANNEL
8430 	if (bt_prompt(curbuf) && !prompt_curpos_editable())
8431 	{
8432 	    clearopbeep(cap->oap);
8433 	    return;
8434 	}
8435 #endif
8436 	n_swapchar(cap);
8437     }
8438     else
8439 	nv_operator(cap);
8440 }
8441 
8442 /*
8443  * Handle an operator command.
8444  * The actual work is done by do_pending_operator().
8445  */
8446     static void
8447 nv_operator(cmdarg_T *cap)
8448 {
8449     int	    op_type;
8450 
8451     op_type = get_op_type(cap->cmdchar, cap->nchar);
8452 #ifdef FEAT_JOB_CHANNEL
8453     if (bt_prompt(curbuf) && op_is_change(op_type) && !prompt_curpos_editable())
8454     {
8455 	clearopbeep(cap->oap);
8456 	return;
8457     }
8458 #endif
8459 
8460     if (op_type == cap->oap->op_type)	    /* double operator works on lines */
8461 	nv_lineop(cap);
8462     else if (!checkclearop(cap->oap))
8463     {
8464 	cap->oap->start = curwin->w_cursor;
8465 	cap->oap->op_type = op_type;
8466 #ifdef FEAT_EVAL
8467 	set_op_var(op_type);
8468 #endif
8469     }
8470 }
8471 
8472 #ifdef FEAT_EVAL
8473 /*
8474  * Set v:operator to the characters for "optype".
8475  */
8476     static void
8477 set_op_var(int optype)
8478 {
8479     char_u	opchars[3];
8480 
8481     if (optype == OP_NOP)
8482 	set_vim_var_string(VV_OP, NULL, 0);
8483     else
8484     {
8485 	opchars[0] = get_op_char(optype);
8486 	opchars[1] = get_extra_op_char(optype);
8487 	opchars[2] = NUL;
8488 	set_vim_var_string(VV_OP, opchars, -1);
8489     }
8490 }
8491 #endif
8492 
8493 /*
8494  * Handle linewise operator "dd", "yy", etc.
8495  *
8496  * "_" is is a strange motion command that helps make operators more logical.
8497  * It is actually implemented, but not documented in the real Vi.  This motion
8498  * command actually refers to "the current line".  Commands like "dd" and "yy"
8499  * are really an alternate form of "d_" and "y_".  It does accept a count, so
8500  * "d3_" works to delete 3 lines.
8501  */
8502     static void
8503 nv_lineop(cmdarg_T *cap)
8504 {
8505     cap->oap->motion_type = MLINE;
8506     if (cursor_down(cap->count1 - 1L, cap->oap->op_type == OP_NOP) == FAIL)
8507 	clearopbeep(cap->oap);
8508     else if (  (cap->oap->op_type == OP_DELETE /* only with linewise motions */
8509 		&& cap->oap->motion_force != 'v'
8510 		&& cap->oap->motion_force != Ctrl_V)
8511 	    || cap->oap->op_type == OP_LSHIFT
8512 	    || cap->oap->op_type == OP_RSHIFT)
8513 	beginline(BL_SOL | BL_FIX);
8514     else if (cap->oap->op_type != OP_YANK)	/* 'Y' does not move cursor */
8515 	beginline(BL_WHITE | BL_FIX);
8516 }
8517 
8518 /*
8519  * <Home> command.
8520  */
8521     static void
8522 nv_home(cmdarg_T *cap)
8523 {
8524     /* CTRL-HOME is like "gg" */
8525     if (mod_mask & MOD_MASK_CTRL)
8526 	nv_goto(cap);
8527     else
8528     {
8529 	cap->count0 = 1;
8530 	nv_pipe(cap);
8531     }
8532     ins_at_eol = FALSE;	    /* Don't move cursor past eol (only necessary in a
8533 			       one-character line). */
8534 }
8535 
8536 /*
8537  * "|" command.
8538  */
8539     static void
8540 nv_pipe(cmdarg_T *cap)
8541 {
8542     cap->oap->motion_type = MCHAR;
8543     cap->oap->inclusive = FALSE;
8544     beginline(0);
8545     if (cap->count0 > 0)
8546     {
8547 	coladvance((colnr_T)(cap->count0 - 1));
8548 	curwin->w_curswant = (colnr_T)(cap->count0 - 1);
8549     }
8550     else
8551 	curwin->w_curswant = 0;
8552     /* keep curswant at the column where we wanted to go, not where
8553      * we ended; differs if line is too short */
8554     curwin->w_set_curswant = FALSE;
8555 }
8556 
8557 /*
8558  * Handle back-word command "b" and "B".
8559  * cap->arg is 1 for "B"
8560  */
8561     static void
8562 nv_bck_word(cmdarg_T *cap)
8563 {
8564     cap->oap->motion_type = MCHAR;
8565     cap->oap->inclusive = FALSE;
8566     curwin->w_set_curswant = TRUE;
8567     if (bck_word(cap->count1, cap->arg, FALSE) == FAIL)
8568 	clearopbeep(cap->oap);
8569 #ifdef FEAT_FOLDING
8570     else if ((fdo_flags & FDO_HOR) && KeyTyped && cap->oap->op_type == OP_NOP)
8571 	foldOpenCursor();
8572 #endif
8573 }
8574 
8575 /*
8576  * Handle word motion commands "e", "E", "w" and "W".
8577  * cap->arg is TRUE for "E" and "W".
8578  */
8579     static void
8580 nv_wordcmd(cmdarg_T *cap)
8581 {
8582     int		n;
8583     int		word_end;
8584     int		flag = FALSE;
8585     pos_T	startpos = curwin->w_cursor;
8586 
8587     /*
8588      * Set inclusive for the "E" and "e" command.
8589      */
8590     if (cap->cmdchar == 'e' || cap->cmdchar == 'E')
8591 	word_end = TRUE;
8592     else
8593 	word_end = FALSE;
8594     cap->oap->inclusive = word_end;
8595 
8596     /*
8597      * "cw" and "cW" are a special case.
8598      */
8599     if (!word_end && cap->oap->op_type == OP_CHANGE)
8600     {
8601 	n = gchar_cursor();
8602 	if (n != NUL)			/* not an empty line */
8603 	{
8604 	    if (VIM_ISWHITE(n))
8605 	    {
8606 		/*
8607 		 * Reproduce a funny Vi behaviour: "cw" on a blank only
8608 		 * changes one character, not all blanks until the start of
8609 		 * the next word.  Only do this when the 'w' flag is included
8610 		 * in 'cpoptions'.
8611 		 */
8612 		if (cap->count1 == 1 && vim_strchr(p_cpo, CPO_CW) != NULL)
8613 		{
8614 		    cap->oap->inclusive = TRUE;
8615 		    cap->oap->motion_type = MCHAR;
8616 		    return;
8617 		}
8618 	    }
8619 	    else
8620 	    {
8621 		/*
8622 		 * This is a little strange. To match what the real Vi does,
8623 		 * we effectively map 'cw' to 'ce', and 'cW' to 'cE', provided
8624 		 * that we are not on a space or a TAB.  This seems impolite
8625 		 * at first, but it's really more what we mean when we say
8626 		 * 'cw'.
8627 		 * Another strangeness: When standing on the end of a word
8628 		 * "ce" will change until the end of the next word, but "cw"
8629 		 * will change only one character! This is done by setting
8630 		 * flag.
8631 		 */
8632 		cap->oap->inclusive = TRUE;
8633 		word_end = TRUE;
8634 		flag = TRUE;
8635 	    }
8636 	}
8637     }
8638 
8639     cap->oap->motion_type = MCHAR;
8640     curwin->w_set_curswant = TRUE;
8641     if (word_end)
8642 	n = end_word(cap->count1, cap->arg, flag, FALSE);
8643     else
8644 	n = fwd_word(cap->count1, cap->arg, cap->oap->op_type != OP_NOP);
8645 
8646     /* Don't leave the cursor on the NUL past the end of line. Unless we
8647      * didn't move it forward. */
8648     if (LT_POS(startpos, curwin->w_cursor))
8649 	adjust_cursor(cap->oap);
8650 
8651     if (n == FAIL && cap->oap->op_type == OP_NOP)
8652 	clearopbeep(cap->oap);
8653     else
8654     {
8655 	adjust_for_sel(cap);
8656 #ifdef FEAT_FOLDING
8657 	if ((fdo_flags & FDO_HOR) && KeyTyped && cap->oap->op_type == OP_NOP)
8658 	    foldOpenCursor();
8659 #endif
8660     }
8661 }
8662 
8663 /*
8664  * Used after a movement command: If the cursor ends up on the NUL after the
8665  * end of the line, may move it back to the last character and make the motion
8666  * inclusive.
8667  */
8668     static void
8669 adjust_cursor(oparg_T *oap)
8670 {
8671     /* The cursor cannot remain on the NUL when:
8672      * - the column is > 0
8673      * - not in Visual mode or 'selection' is "o"
8674      * - 'virtualedit' is not "all" and not "onemore".
8675      */
8676     if (curwin->w_cursor.col > 0 && gchar_cursor() == NUL
8677 		&& (!VIsual_active || *p_sel == 'o')
8678 		&& !virtual_active() && (ve_flags & VE_ONEMORE) == 0)
8679     {
8680 	--curwin->w_cursor.col;
8681 	/* prevent cursor from moving on the trail byte */
8682 	if (has_mbyte)
8683 	    mb_adjust_cursor();
8684 	oap->inclusive = TRUE;
8685     }
8686 }
8687 
8688 /*
8689  * "0" and "^" commands.
8690  * cap->arg is the argument for beginline().
8691  */
8692     static void
8693 nv_beginline(cmdarg_T *cap)
8694 {
8695     cap->oap->motion_type = MCHAR;
8696     cap->oap->inclusive = FALSE;
8697     beginline(cap->arg);
8698 #ifdef FEAT_FOLDING
8699     if ((fdo_flags & FDO_HOR) && KeyTyped && cap->oap->op_type == OP_NOP)
8700 	foldOpenCursor();
8701 #endif
8702     ins_at_eol = FALSE;	    /* Don't move cursor past eol (only necessary in a
8703 			       one-character line). */
8704 }
8705 
8706 /*
8707  * In exclusive Visual mode, may include the last character.
8708  */
8709     static void
8710 adjust_for_sel(cmdarg_T *cap)
8711 {
8712     if (VIsual_active && cap->oap->inclusive && *p_sel == 'e'
8713 	    && gchar_cursor() != NUL && LT_POS(VIsual, curwin->w_cursor))
8714     {
8715 	if (has_mbyte)
8716 	    inc_cursor();
8717 	else
8718 	    ++curwin->w_cursor.col;
8719 	cap->oap->inclusive = FALSE;
8720     }
8721 }
8722 
8723 /*
8724  * Exclude last character at end of Visual area for 'selection' == "exclusive".
8725  * Should check VIsual_mode before calling this.
8726  * Returns TRUE when backed up to the previous line.
8727  */
8728     static int
8729 unadjust_for_sel(void)
8730 {
8731     pos_T	*pp;
8732 
8733     if (*p_sel == 'e' && !EQUAL_POS(VIsual, curwin->w_cursor))
8734     {
8735 	if (LT_POS(VIsual, curwin->w_cursor))
8736 	    pp = &curwin->w_cursor;
8737 	else
8738 	    pp = &VIsual;
8739 	if (pp->coladd > 0)
8740 	    --pp->coladd;
8741 	else
8742 	if (pp->col > 0)
8743 	{
8744 	    --pp->col;
8745 	    mb_adjustpos(curbuf, pp);
8746 	}
8747 	else if (pp->lnum > 1)
8748 	{
8749 	    --pp->lnum;
8750 	    pp->col = (colnr_T)STRLEN(ml_get(pp->lnum));
8751 	    return TRUE;
8752 	}
8753     }
8754     return FALSE;
8755 }
8756 
8757 /*
8758  * SELECT key in Normal or Visual mode: end of Select mode mapping.
8759  */
8760     static void
8761 nv_select(cmdarg_T *cap)
8762 {
8763     if (VIsual_active)
8764 	VIsual_select = TRUE;
8765     else if (VIsual_reselect)
8766     {
8767 	cap->nchar = 'v';	    /* fake "gv" command */
8768 	cap->arg = TRUE;
8769 	nv_g_cmd(cap);
8770     }
8771 }
8772 
8773 
8774 /*
8775  * "G", "gg", CTRL-END, CTRL-HOME.
8776  * cap->arg is TRUE for "G".
8777  */
8778     static void
8779 nv_goto(cmdarg_T *cap)
8780 {
8781     linenr_T	lnum;
8782 
8783     if (cap->arg)
8784 	lnum = curbuf->b_ml.ml_line_count;
8785     else
8786 	lnum = 1L;
8787     cap->oap->motion_type = MLINE;
8788     setpcmark();
8789 
8790     /* When a count is given, use it instead of the default lnum */
8791     if (cap->count0 != 0)
8792 	lnum = cap->count0;
8793     if (lnum < 1L)
8794 	lnum = 1L;
8795     else if (lnum > curbuf->b_ml.ml_line_count)
8796 	lnum = curbuf->b_ml.ml_line_count;
8797     curwin->w_cursor.lnum = lnum;
8798     beginline(BL_SOL | BL_FIX);
8799 #ifdef FEAT_FOLDING
8800     if ((fdo_flags & FDO_JUMP) && KeyTyped && cap->oap->op_type == OP_NOP)
8801 	foldOpenCursor();
8802 #endif
8803 }
8804 
8805 /*
8806  * CTRL-\ in Normal mode.
8807  */
8808     static void
8809 nv_normal(cmdarg_T *cap)
8810 {
8811     if (cap->nchar == Ctrl_N || cap->nchar == Ctrl_G)
8812     {
8813 	clearop(cap->oap);
8814 	if (restart_edit != 0 && mode_displayed)
8815 	    clear_cmdline = TRUE;		/* unshow mode later */
8816 	restart_edit = 0;
8817 #ifdef FEAT_CMDWIN
8818 	if (cmdwin_type != 0)
8819 	    cmdwin_result = Ctrl_C;
8820 #endif
8821 	if (VIsual_active)
8822 	{
8823 	    end_visual_mode();		/* stop Visual */
8824 	    redraw_curbuf_later(INVERTED);
8825 	}
8826 	/* CTRL-\ CTRL-G restarts Insert mode when 'insertmode' is set. */
8827 	if (cap->nchar == Ctrl_G && p_im)
8828 	    restart_edit = 'a';
8829     }
8830     else
8831 	clearopbeep(cap->oap);
8832 }
8833 
8834 /*
8835  * ESC in Normal mode: beep, but don't flush buffers.
8836  * Don't even beep if we are canceling a command.
8837  */
8838     static void
8839 nv_esc(cmdarg_T *cap)
8840 {
8841     int		no_reason;
8842 
8843     no_reason = (cap->oap->op_type == OP_NOP
8844 		&& cap->opcount == 0
8845 		&& cap->count0 == 0
8846 		&& cap->oap->regname == 0
8847 		&& !p_im);
8848 
8849     if (cap->arg)		/* TRUE for CTRL-C */
8850     {
8851 	if (restart_edit == 0
8852 #ifdef FEAT_CMDWIN
8853 		&& cmdwin_type == 0
8854 #endif
8855 		&& !VIsual_active
8856 		&& no_reason)
8857 	{
8858 	    if (anyBufIsChanged())
8859 		msg(_("Type  :qa!  and press <Enter> to abandon all changes and exit Vim"));
8860 	    else
8861 		msg(_("Type  :qa  and press <Enter> to exit Vim"));
8862 	}
8863 
8864 	/* Don't reset "restart_edit" when 'insertmode' is set, it won't be
8865 	 * set again below when halfway a mapping. */
8866 	if (!p_im)
8867 	    restart_edit = 0;
8868 #ifdef FEAT_CMDWIN
8869 	if (cmdwin_type != 0)
8870 	{
8871 	    cmdwin_result = K_IGNORE;
8872 	    got_int = FALSE;	/* don't stop executing autocommands et al. */
8873 	    return;
8874 	}
8875 #endif
8876     }
8877 
8878     if (VIsual_active)
8879     {
8880 	end_visual_mode();	/* stop Visual */
8881 	check_cursor_col();	/* make sure cursor is not beyond EOL */
8882 	curwin->w_set_curswant = TRUE;
8883 	redraw_curbuf_later(INVERTED);
8884     }
8885     else if (no_reason)
8886 	vim_beep(BO_ESC);
8887     clearop(cap->oap);
8888 
8889     /* A CTRL-C is often used at the start of a menu.  When 'insertmode' is
8890      * set return to Insert mode afterwards. */
8891     if (restart_edit == 0 && goto_im() && ex_normal_busy == 0)
8892 	restart_edit = 'a';
8893 }
8894 
8895 /*
8896  * Handle "A", "a", "I", "i" and <Insert> commands.
8897  * Also handle K_PS, start bracketed paste.
8898  */
8899     static void
8900 nv_edit(cmdarg_T *cap)
8901 {
8902     /* <Insert> is equal to "i" */
8903     if (cap->cmdchar == K_INS || cap->cmdchar == K_KINS)
8904 	cap->cmdchar = 'i';
8905 
8906     /* in Visual mode "A" and "I" are an operator */
8907     if (VIsual_active && (cap->cmdchar == 'A' || cap->cmdchar == 'I'))
8908     {
8909 #ifdef FEAT_TERMINAL
8910 	if (term_in_normal_mode())
8911 	{
8912 	    end_visual_mode();
8913 	    clearop(cap->oap);
8914 	    term_enter_job_mode();
8915 	    return;
8916 	}
8917 #endif
8918 	v_visop(cap);
8919     }
8920 
8921     /* in Visual mode and after an operator "a" and "i" are for text objects */
8922     else if ((cap->cmdchar == 'a' || cap->cmdchar == 'i')
8923 	    && (cap->oap->op_type != OP_NOP || VIsual_active))
8924     {
8925 #ifdef FEAT_TEXTOBJ
8926 	nv_object(cap);
8927 #else
8928 	clearopbeep(cap->oap);
8929 #endif
8930     }
8931 #ifdef FEAT_TERMINAL
8932     else if (term_in_normal_mode())
8933     {
8934 	clearop(cap->oap);
8935 	term_enter_job_mode();
8936 	return;
8937     }
8938 #endif
8939     else if (!curbuf->b_p_ma && !p_im)
8940     {
8941 	/* Only give this error when 'insertmode' is off. */
8942 	emsg(_(e_modifiable));
8943 	clearop(cap->oap);
8944 	if (cap->cmdchar == K_PS)
8945 	    /* drop the pasted text */
8946 	    bracketed_paste(PASTE_INSERT, TRUE, NULL);
8947     }
8948     else if (cap->cmdchar == K_PS && VIsual_active)
8949     {
8950 	pos_T old_pos = curwin->w_cursor;
8951 	pos_T old_visual = VIsual;
8952 
8953 	/* In Visual mode the selected text is deleted. */
8954 	if (VIsual_mode == 'V' || curwin->w_cursor.lnum != VIsual.lnum)
8955 	{
8956 	    shift_delete_registers();
8957 	    cap->oap->regname = '1';
8958 	}
8959 	else
8960 	    cap->oap->regname = '-';
8961 	cap->cmdchar = 'd';
8962 	cap->nchar = NUL;
8963 	nv_operator(cap);
8964 	do_pending_operator(cap, 0, FALSE);
8965 	cap->cmdchar = K_PS;
8966 
8967 	/* When the last char in the line was deleted then append. Detect this
8968 	 * by checking if the cursor moved to before the Visual area. */
8969 	if (*ml_get_cursor() != NUL && LT_POS(curwin->w_cursor, old_pos)
8970 				       && LT_POS(curwin->w_cursor, old_visual))
8971 	    inc_cursor();
8972 
8973 	/* Insert to replace the deleted text with the pasted text. */
8974 	invoke_edit(cap, FALSE, cap->cmdchar, FALSE);
8975     }
8976     else if (!checkclearopq(cap->oap))
8977     {
8978 	switch (cap->cmdchar)
8979 	{
8980 	    case 'A':	/* "A"ppend after the line */
8981 		curwin->w_set_curswant = TRUE;
8982 		if (ve_flags == VE_ALL)
8983 		{
8984 		    int save_State = State;
8985 
8986 		    /* Pretend Insert mode here to allow the cursor on the
8987 		     * character past the end of the line */
8988 		    State = INSERT;
8989 		    coladvance((colnr_T)MAXCOL);
8990 		    State = save_State;
8991 		}
8992 		else
8993 		    curwin->w_cursor.col += (colnr_T)STRLEN(ml_get_cursor());
8994 		break;
8995 
8996 	    case 'I':	/* "I"nsert before the first non-blank */
8997 		if (vim_strchr(p_cpo, CPO_INSEND) == NULL)
8998 		    beginline(BL_WHITE);
8999 		else
9000 		    beginline(BL_WHITE|BL_FIX);
9001 		break;
9002 
9003 	    case K_PS:
9004 		/* Bracketed paste works like "a"ppend, unless the cursor is in
9005 		 * the first column, then it inserts. */
9006 		if (curwin->w_cursor.col == 0)
9007 		    break;
9008 		/* FALLTHROUGH */
9009 
9010 	    case 'a':	/* "a"ppend is like "i"nsert on the next character. */
9011 		/* increment coladd when in virtual space, increment the
9012 		 * column otherwise, also to append after an unprintable char */
9013 		if (virtual_active()
9014 			&& (curwin->w_cursor.coladd > 0
9015 			    || *ml_get_cursor() == NUL
9016 			    || *ml_get_cursor() == TAB))
9017 		    curwin->w_cursor.coladd++;
9018 		else if (*ml_get_cursor() != NUL)
9019 		    inc_cursor();
9020 		break;
9021 	}
9022 
9023 	if (curwin->w_cursor.coladd && cap->cmdchar != 'A')
9024 	{
9025 	    int save_State = State;
9026 
9027 	    /* Pretend Insert mode here to allow the cursor on the
9028 	     * character past the end of the line */
9029 	    State = INSERT;
9030 	    coladvance(getviscol());
9031 	    State = save_State;
9032 	}
9033 
9034 	invoke_edit(cap, FALSE, cap->cmdchar, FALSE);
9035     }
9036     else if (cap->cmdchar == K_PS)
9037 	/* drop the pasted text */
9038 	bracketed_paste(PASTE_INSERT, TRUE, NULL);
9039 }
9040 
9041 /*
9042  * Invoke edit() and take care of "restart_edit" and the return value.
9043  */
9044     static void
9045 invoke_edit(
9046     cmdarg_T	*cap,
9047     int		repl,		/* "r" or "gr" command */
9048     int		cmd,
9049     int		startln)
9050 {
9051     int		restart_edit_save = 0;
9052 
9053     /* Complicated: When the user types "a<C-O>a" we don't want to do Insert
9054      * mode recursively.  But when doing "a<C-O>." or "a<C-O>rx" we do allow
9055      * it. */
9056     if (repl || !stuff_empty())
9057 	restart_edit_save = restart_edit;
9058     else
9059 	restart_edit_save = 0;
9060 
9061     /* Always reset "restart_edit", this is not a restarted edit. */
9062     restart_edit = 0;
9063 
9064     if (edit(cmd, startln, cap->count1))
9065 	cap->retval |= CA_COMMAND_BUSY;
9066 
9067     if (restart_edit == 0)
9068 	restart_edit = restart_edit_save;
9069 }
9070 
9071 #ifdef FEAT_TEXTOBJ
9072 /*
9073  * "a" or "i" while an operator is pending or in Visual mode: object motion.
9074  */
9075     static void
9076 nv_object(
9077     cmdarg_T	*cap)
9078 {
9079     int		flag;
9080     int		include;
9081     char_u	*mps_save;
9082 
9083     if (cap->cmdchar == 'i')
9084 	include = FALSE;    /* "ix" = inner object: exclude white space */
9085     else
9086 	include = TRUE;	    /* "ax" = an object: include white space */
9087 
9088     /* Make sure (), [], {} and <> are in 'matchpairs' */
9089     mps_save = curbuf->b_p_mps;
9090     curbuf->b_p_mps = (char_u *)"(:),{:},[:],<:>";
9091 
9092     switch (cap->nchar)
9093     {
9094 	case 'w': /* "aw" = a word */
9095 		flag = current_word(cap->oap, cap->count1, include, FALSE);
9096 		break;
9097 	case 'W': /* "aW" = a WORD */
9098 		flag = current_word(cap->oap, cap->count1, include, TRUE);
9099 		break;
9100 	case 'b': /* "ab" = a braces block */
9101 	case '(':
9102 	case ')':
9103 		flag = current_block(cap->oap, cap->count1, include, '(', ')');
9104 		break;
9105 	case 'B': /* "aB" = a Brackets block */
9106 	case '{':
9107 	case '}':
9108 		flag = current_block(cap->oap, cap->count1, include, '{', '}');
9109 		break;
9110 	case '[': /* "a[" = a [] block */
9111 	case ']':
9112 		flag = current_block(cap->oap, cap->count1, include, '[', ']');
9113 		break;
9114 	case '<': /* "a<" = a <> block */
9115 	case '>':
9116 		flag = current_block(cap->oap, cap->count1, include, '<', '>');
9117 		break;
9118 	case 't': /* "at" = a tag block (xml and html) */
9119 		/* Do not adjust oap->end in do_pending_operator()
9120 		 * otherwise there are different results for 'dit'
9121 		 * (note leading whitespace in last line):
9122 		 * 1) <b>      2) <b>
9123 		 *    foobar      foobar
9124 		 *    </b>            </b>
9125 		 */
9126 		cap->retval |= CA_NO_ADJ_OP_END;
9127 		flag = current_tagblock(cap->oap, cap->count1, include);
9128 		break;
9129 	case 'p': /* "ap" = a paragraph */
9130 		flag = current_par(cap->oap, cap->count1, include, 'p');
9131 		break;
9132 	case 's': /* "as" = a sentence */
9133 		flag = current_sent(cap->oap, cap->count1, include);
9134 		break;
9135 	case '"': /* "a"" = a double quoted string */
9136 	case '\'': /* "a'" = a single quoted string */
9137 	case '`': /* "a`" = a backtick quoted string */
9138 		flag = current_quote(cap->oap, cap->count1, include,
9139 								  cap->nchar);
9140 		break;
9141 #if 0	/* TODO */
9142 	case 'S': /* "aS" = a section */
9143 	case 'f': /* "af" = a filename */
9144 	case 'u': /* "au" = a URL */
9145 #endif
9146 	default:
9147 		flag = FAIL;
9148 		break;
9149     }
9150 
9151     curbuf->b_p_mps = mps_save;
9152     if (flag == FAIL)
9153 	clearopbeep(cap->oap);
9154     adjust_cursor_col();
9155     curwin->w_set_curswant = TRUE;
9156 }
9157 #endif
9158 
9159 /*
9160  * "q" command: Start/stop recording.
9161  * "q:", "q/", "q?": edit command-line in command-line window.
9162  */
9163     static void
9164 nv_record(cmdarg_T *cap)
9165 {
9166     if (cap->oap->op_type == OP_FORMAT)
9167     {
9168 	/* "gqq" is the same as "gqgq": format line */
9169 	cap->cmdchar = 'g';
9170 	cap->nchar = 'q';
9171 	nv_operator(cap);
9172     }
9173     else if (!checkclearop(cap->oap))
9174     {
9175 #ifdef FEAT_CMDWIN
9176 	if (cap->nchar == ':' || cap->nchar == '/' || cap->nchar == '?')
9177 	{
9178 	    stuffcharReadbuff(cap->nchar);
9179 	    stuffcharReadbuff(K_CMDWIN);
9180 	}
9181 	else
9182 #endif
9183 	    /* (stop) recording into a named register, unless executing a
9184 	     * register */
9185 	    if (reg_executing == 0 && do_record(cap->nchar) == FAIL)
9186 		clearopbeep(cap->oap);
9187     }
9188 }
9189 
9190 /*
9191  * Handle the "@r" command.
9192  */
9193     static void
9194 nv_at(cmdarg_T *cap)
9195 {
9196     if (checkclearop(cap->oap))
9197 	return;
9198 #ifdef FEAT_EVAL
9199     if (cap->nchar == '=')
9200     {
9201 	if (get_expr_register() == NUL)
9202 	    return;
9203     }
9204 #endif
9205     while (cap->count1-- && !got_int)
9206     {
9207 	if (do_execreg(cap->nchar, FALSE, FALSE, FALSE) == FAIL)
9208 	{
9209 	    clearopbeep(cap->oap);
9210 	    break;
9211 	}
9212 	line_breakcheck();
9213     }
9214 }
9215 
9216 /*
9217  * Handle the CTRL-U and CTRL-D commands.
9218  */
9219     static void
9220 nv_halfpage(cmdarg_T *cap)
9221 {
9222     if ((cap->cmdchar == Ctrl_U && curwin->w_cursor.lnum == 1)
9223 	    || (cap->cmdchar == Ctrl_D
9224 		&& curwin->w_cursor.lnum == curbuf->b_ml.ml_line_count))
9225 	clearopbeep(cap->oap);
9226     else if (!checkclearop(cap->oap))
9227 	halfpage(cap->cmdchar == Ctrl_D, cap->count0);
9228 }
9229 
9230 /*
9231  * Handle "J" or "gJ" command.
9232  */
9233     static void
9234 nv_join(cmdarg_T *cap)
9235 {
9236     if (VIsual_active)	/* join the visual lines */
9237 	nv_operator(cap);
9238     else if (!checkclearop(cap->oap))
9239     {
9240 	if (cap->count0 <= 1)
9241 	    cap->count0 = 2;	    /* default for join is two lines! */
9242 	if (curwin->w_cursor.lnum + cap->count0 - 1 >
9243 						   curbuf->b_ml.ml_line_count)
9244 	{
9245 	    /* can't join when on the last line */
9246 	    if (cap->count0 <= 2)
9247 	    {
9248 		clearopbeep(cap->oap);
9249 		return;
9250 	    }
9251 	    cap->count0 = curbuf->b_ml.ml_line_count
9252 						  - curwin->w_cursor.lnum + 1;
9253 	}
9254 
9255 	prep_redo(cap->oap->regname, cap->count0,
9256 				     NUL, cap->cmdchar, NUL, NUL, cap->nchar);
9257 	(void)do_join(cap->count0, cap->nchar == NUL, TRUE, TRUE, TRUE);
9258     }
9259 }
9260 
9261 /*
9262  * "P", "gP", "p" and "gp" commands.
9263  */
9264     static void
9265 nv_put(cmdarg_T *cap)
9266 {
9267     nv_put_opt(cap, FALSE);
9268 }
9269 
9270 /*
9271  * "P", "gP", "p" and "gp" commands.
9272  * "fix_indent" is TRUE for "[p", "[P", "]p" and "]P".
9273  */
9274     static void
9275 nv_put_opt(cmdarg_T *cap, int fix_indent)
9276 {
9277     int		regname = 0;
9278     void	*reg1 = NULL, *reg2 = NULL;
9279     int		empty = FALSE;
9280     int		was_visual = FALSE;
9281     int		dir;
9282     int		flags = 0;
9283 
9284     if (cap->oap->op_type != OP_NOP)
9285     {
9286 #ifdef FEAT_DIFF
9287 	/* "dp" is ":diffput" */
9288 	if (cap->oap->op_type == OP_DELETE && cap->cmdchar == 'p')
9289 	{
9290 	    clearop(cap->oap);
9291 	    nv_diffgetput(TRUE, cap->opcount);
9292 	}
9293 	else
9294 #endif
9295 	clearopbeep(cap->oap);
9296     }
9297 #ifdef FEAT_JOB_CHANNEL
9298     else if (bt_prompt(curbuf) && !prompt_curpos_editable())
9299     {
9300 	clearopbeep(cap->oap);
9301     }
9302 #endif
9303     else
9304     {
9305 	if (fix_indent)
9306 	{
9307 	    dir = (cap->cmdchar == ']' && cap->nchar == 'p')
9308 							 ? FORWARD : BACKWARD;
9309 	    flags |= PUT_FIXINDENT;
9310 	}
9311 	else
9312 	    dir = (cap->cmdchar == 'P'
9313 				 || (cap->cmdchar == 'g' && cap->nchar == 'P'))
9314 							 ? BACKWARD : FORWARD;
9315 	prep_redo_cmd(cap);
9316 	if (cap->cmdchar == 'g')
9317 	    flags |= PUT_CURSEND;
9318 
9319 	if (VIsual_active)
9320 	{
9321 	    /* Putting in Visual mode: The put text replaces the selected
9322 	     * text.  First delete the selected text, then put the new text.
9323 	     * Need to save and restore the registers that the delete
9324 	     * overwrites if the old contents is being put.
9325 	     */
9326 	    was_visual = TRUE;
9327 	    regname = cap->oap->regname;
9328 #ifdef FEAT_CLIPBOARD
9329 	    adjust_clip_reg(&regname);
9330 #endif
9331 	   if (regname == 0 || regname == '"'
9332 				     || VIM_ISDIGIT(regname) || regname == '-'
9333 #ifdef FEAT_CLIPBOARD
9334 		    || (clip_unnamed && (regname == '*' || regname == '+'))
9335 #endif
9336 
9337 		    )
9338 	    {
9339 		/* The delete is going to overwrite the register we want to
9340 		 * put, save it first. */
9341 		reg1 = get_register(regname, TRUE);
9342 	    }
9343 
9344 	    /* Now delete the selected text. */
9345 	    cap->cmdchar = 'd';
9346 	    cap->nchar = NUL;
9347 	    cap->oap->regname = NUL;
9348 	    nv_operator(cap);
9349 	    do_pending_operator(cap, 0, FALSE);
9350 	    empty = (curbuf->b_ml.ml_flags & ML_EMPTY);
9351 
9352 	    /* delete PUT_LINE_BACKWARD; */
9353 	    cap->oap->regname = regname;
9354 
9355 	    if (reg1 != NULL)
9356 	    {
9357 		/* Delete probably changed the register we want to put, save
9358 		 * it first. Then put back what was there before the delete. */
9359 		reg2 = get_register(regname, FALSE);
9360 		put_register(regname, reg1);
9361 	    }
9362 
9363 	    /* When deleted a linewise Visual area, put the register as
9364 	     * lines to avoid it joined with the next line.  When deletion was
9365 	     * characterwise, split a line when putting lines. */
9366 	    if (VIsual_mode == 'V')
9367 		flags |= PUT_LINE;
9368 	    else if (VIsual_mode == 'v')
9369 		flags |= PUT_LINE_SPLIT;
9370 	    if (VIsual_mode == Ctrl_V && dir == FORWARD)
9371 		flags |= PUT_LINE_FORWARD;
9372 	    dir = BACKWARD;
9373 	    if ((VIsual_mode != 'V'
9374 			&& curwin->w_cursor.col < curbuf->b_op_start.col)
9375 		    || (VIsual_mode == 'V'
9376 			&& curwin->w_cursor.lnum < curbuf->b_op_start.lnum))
9377 		/* cursor is at the end of the line or end of file, put
9378 		 * forward. */
9379 		dir = FORWARD;
9380 	    /* May have been reset in do_put(). */
9381 	    VIsual_active = TRUE;
9382 	}
9383 	do_put(cap->oap->regname, dir, cap->count1, flags);
9384 
9385 	/* If a register was saved, put it back now. */
9386 	if (reg2 != NULL)
9387 	    put_register(regname, reg2);
9388 
9389 	/* What to reselect with "gv"?  Selecting the just put text seems to
9390 	 * be the most useful, since the original text was removed. */
9391 	if (was_visual)
9392 	{
9393 	    curbuf->b_visual.vi_start = curbuf->b_op_start;
9394 	    curbuf->b_visual.vi_end = curbuf->b_op_end;
9395 	    /* need to adjust cursor position */
9396 	    if (*p_sel == 'e')
9397 		inc(&curbuf->b_visual.vi_end);
9398 	}
9399 
9400 	/* When all lines were selected and deleted do_put() leaves an empty
9401 	 * line that needs to be deleted now. */
9402 	if (empty && *ml_get(curbuf->b_ml.ml_line_count) == NUL)
9403 	{
9404 	    ml_delete(curbuf->b_ml.ml_line_count, TRUE);
9405 
9406 	    /* If the cursor was in that line, move it to the end of the last
9407 	     * line. */
9408 	    if (curwin->w_cursor.lnum > curbuf->b_ml.ml_line_count)
9409 	    {
9410 		curwin->w_cursor.lnum = curbuf->b_ml.ml_line_count;
9411 		coladvance((colnr_T)MAXCOL);
9412 	    }
9413 	}
9414 	auto_format(FALSE, TRUE);
9415     }
9416 }
9417 
9418 /*
9419  * "o" and "O" commands.
9420  */
9421     static void
9422 nv_open(cmdarg_T *cap)
9423 {
9424 #ifdef FEAT_DIFF
9425     /* "do" is ":diffget" */
9426     if (cap->oap->op_type == OP_DELETE && cap->cmdchar == 'o')
9427     {
9428 	clearop(cap->oap);
9429 	nv_diffgetput(FALSE, cap->opcount);
9430     }
9431     else
9432 #endif
9433     if (VIsual_active)  /* switch start and end of visual */
9434 	v_swap_corners(cap->cmdchar);
9435 #ifdef FEAT_JOB_CHANNEL
9436     else if (bt_prompt(curbuf))
9437 	clearopbeep(cap->oap);
9438 #endif
9439     else
9440 	n_opencmd(cap);
9441 }
9442 
9443 #ifdef FEAT_NETBEANS_INTG
9444     static void
9445 nv_nbcmd(cmdarg_T *cap)
9446 {
9447     netbeans_keycommand(cap->nchar);
9448 }
9449 #endif
9450 
9451 #ifdef FEAT_DND
9452     static void
9453 nv_drop(cmdarg_T *cap UNUSED)
9454 {
9455     do_put('~', BACKWARD, 1L, PUT_CURSEND);
9456 }
9457 #endif
9458 
9459 /*
9460  * Trigger CursorHold event.
9461  * When waiting for a character for 'updatetime' K_CURSORHOLD is put in the
9462  * input buffer.  "did_cursorhold" is set to avoid retriggering.
9463  */
9464     static void
9465 nv_cursorhold(cmdarg_T *cap)
9466 {
9467     apply_autocmds(EVENT_CURSORHOLD, NULL, NULL, FALSE, curbuf);
9468     did_cursorhold = TRUE;
9469     cap->retval |= CA_COMMAND_BUSY;	/* don't call edit() now */
9470 }
9471 
9472 /*
9473  * Calculate start/end virtual columns for operating in block mode.
9474  */
9475     static void
9476 get_op_vcol(
9477     oparg_T	*oap,
9478     colnr_T	redo_VIsual_vcol,
9479     int		initial)    /* when TRUE adjust position for 'selectmode' */
9480 {
9481     colnr_T	    start, end;
9482 
9483     if (VIsual_mode != Ctrl_V
9484 	    || (!initial && oap->end.col < curwin->w_width))
9485 	return;
9486 
9487     oap->block_mode = TRUE;
9488 
9489     /* prevent from moving onto a trail byte */
9490     if (has_mbyte)
9491 	mb_adjustpos(curwin->w_buffer, &oap->end);
9492 
9493     getvvcol(curwin, &(oap->start), &oap->start_vcol, NULL, &oap->end_vcol);
9494 
9495     if (!redo_VIsual_busy)
9496     {
9497 	getvvcol(curwin, &(oap->end), &start, NULL, &end);
9498 
9499 	if (start < oap->start_vcol)
9500 	    oap->start_vcol = start;
9501 	if (end > oap->end_vcol)
9502 	{
9503 	    if (initial && *p_sel == 'e' && start >= 1
9504 				    && start - 1 >= oap->end_vcol)
9505 		oap->end_vcol = start - 1;
9506 	    else
9507 		oap->end_vcol = end;
9508 	}
9509     }
9510 
9511     /* if '$' was used, get oap->end_vcol from longest line */
9512     if (curwin->w_curswant == MAXCOL)
9513     {
9514 	curwin->w_cursor.col = MAXCOL;
9515 	oap->end_vcol = 0;
9516 	for (curwin->w_cursor.lnum = oap->start.lnum;
9517 		curwin->w_cursor.lnum <= oap->end.lnum;
9518 					++curwin->w_cursor.lnum)
9519 	{
9520 	    getvvcol(curwin, &curwin->w_cursor, NULL, NULL, &end);
9521 	    if (end > oap->end_vcol)
9522 		oap->end_vcol = end;
9523 	}
9524     }
9525     else if (redo_VIsual_busy)
9526 	oap->end_vcol = oap->start_vcol + redo_VIsual_vcol - 1;
9527     /*
9528     * Correct oap->end.col and oap->start.col to be the
9529     * upper-left and lower-right corner of the block area.
9530     *
9531     * (Actually, this does convert column positions into character
9532     * positions)
9533     */
9534     curwin->w_cursor.lnum = oap->end.lnum;
9535     coladvance(oap->end_vcol);
9536     oap->end = curwin->w_cursor;
9537 
9538     curwin->w_cursor = oap->start;
9539     coladvance(oap->start_vcol);
9540     oap->start = curwin->w_cursor;
9541 }
9542