xref: /vim-8.2.3635/src/normal.c (revision e7b1ea02)
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 static int	VIsual_mode_orig = NUL;		// saved Visual mode
18 static int	restart_VIsual_select = 0;
19 
20 #ifdef FEAT_EVAL
21 static void	set_vcount_ca(cmdarg_T *cap, int *set_prevcount);
22 #endif
23 static int	nv_compare(const void *s1, const void *s2);
24 static void	unshift_special(cmdarg_T *cap);
25 #ifdef FEAT_CMDL_INFO
26 static void	del_from_showcmd(int);
27 #endif
28 
29 /*
30  * nv_*(): functions called to handle Normal and Visual mode commands.
31  * n_*(): functions called to handle Normal mode commands.
32  * v_*(): functions called to handle Visual mode commands.
33  */
34 static void	nv_ignore(cmdarg_T *cap);
35 static void	nv_nop(cmdarg_T *cap);
36 static void	nv_error(cmdarg_T *cap);
37 static void	nv_help(cmdarg_T *cap);
38 static void	nv_addsub(cmdarg_T *cap);
39 static void	nv_page(cmdarg_T *cap);
40 static void	nv_zet(cmdarg_T *cap);
41 #ifdef FEAT_GUI
42 static void	nv_ver_scrollbar(cmdarg_T *cap);
43 static void	nv_hor_scrollbar(cmdarg_T *cap);
44 #endif
45 #ifdef FEAT_GUI_TABLINE
46 static void	nv_tabline(cmdarg_T *cap);
47 static void	nv_tabmenu(cmdarg_T *cap);
48 #endif
49 static void	nv_exmode(cmdarg_T *cap);
50 static void	nv_colon(cmdarg_T *cap);
51 static void	nv_ctrlg(cmdarg_T *cap);
52 static void	nv_ctrlh(cmdarg_T *cap);
53 static void	nv_clear(cmdarg_T *cap);
54 static void	nv_ctrlo(cmdarg_T *cap);
55 static void	nv_hat(cmdarg_T *cap);
56 static void	nv_Zet(cmdarg_T *cap);
57 static void	nv_ident(cmdarg_T *cap);
58 static void	nv_tagpop(cmdarg_T *cap);
59 static void	nv_scroll(cmdarg_T *cap);
60 static void	nv_right(cmdarg_T *cap);
61 static void	nv_left(cmdarg_T *cap);
62 static void	nv_up(cmdarg_T *cap);
63 static void	nv_down(cmdarg_T *cap);
64 static void	nv_end(cmdarg_T *cap);
65 static void	nv_dollar(cmdarg_T *cap);
66 static void	nv_search(cmdarg_T *cap);
67 static void	nv_next(cmdarg_T *cap);
68 static int	normal_search(cmdarg_T *cap, int dir, char_u *pat, int opt, int *wrapped);
69 static void	nv_csearch(cmdarg_T *cap);
70 static void	nv_brackets(cmdarg_T *cap);
71 static void	nv_percent(cmdarg_T *cap);
72 static void	nv_brace(cmdarg_T *cap);
73 static void	nv_mark(cmdarg_T *cap);
74 static void	nv_findpar(cmdarg_T *cap);
75 static void	nv_undo(cmdarg_T *cap);
76 static void	nv_kundo(cmdarg_T *cap);
77 static void	nv_Replace(cmdarg_T *cap);
78 static void	nv_replace(cmdarg_T *cap);
79 static void	nv_cursormark(cmdarg_T *cap, int flag, pos_T *pos);
80 static void	v_visop(cmdarg_T *cap);
81 static void	nv_subst(cmdarg_T *cap);
82 static void	nv_abbrev(cmdarg_T *cap);
83 static void	nv_optrans(cmdarg_T *cap);
84 static void	nv_gomark(cmdarg_T *cap);
85 static void	nv_pcmark(cmdarg_T *cap);
86 static void	nv_regname(cmdarg_T *cap);
87 static void	nv_visual(cmdarg_T *cap);
88 static void	n_start_visual_mode(int c);
89 static void	nv_window(cmdarg_T *cap);
90 static void	nv_suspend(cmdarg_T *cap);
91 static void	nv_g_cmd(cmdarg_T *cap);
92 static void	nv_dot(cmdarg_T *cap);
93 static void	nv_redo(cmdarg_T *cap);
94 static void	nv_Undo(cmdarg_T *cap);
95 static void	nv_tilde(cmdarg_T *cap);
96 static void	nv_operator(cmdarg_T *cap);
97 #ifdef FEAT_EVAL
98 static void	set_op_var(int optype);
99 #endif
100 static void	nv_lineop(cmdarg_T *cap);
101 static void	nv_home(cmdarg_T *cap);
102 static void	nv_pipe(cmdarg_T *cap);
103 static void	nv_bck_word(cmdarg_T *cap);
104 static void	nv_wordcmd(cmdarg_T *cap);
105 static void	nv_beginline(cmdarg_T *cap);
106 static void	adjust_cursor(oparg_T *oap);
107 static void	adjust_for_sel(cmdarg_T *cap);
108 static void	nv_select(cmdarg_T *cap);
109 static void	nv_goto(cmdarg_T *cap);
110 static void	nv_normal(cmdarg_T *cap);
111 static void	nv_esc(cmdarg_T *oap);
112 static void	nv_edit(cmdarg_T *cap);
113 static void	invoke_edit(cmdarg_T *cap, int repl, int cmd, int startln);
114 #ifdef FEAT_TEXTOBJ
115 static void	nv_object(cmdarg_T *cap);
116 #endif
117 static void	nv_record(cmdarg_T *cap);
118 static void	nv_at(cmdarg_T *cap);
119 static void	nv_halfpage(cmdarg_T *cap);
120 static void	nv_join(cmdarg_T *cap);
121 static void	nv_put(cmdarg_T *cap);
122 static void	nv_put_opt(cmdarg_T *cap, int fix_indent);
123 static void	nv_open(cmdarg_T *cap);
124 #ifdef FEAT_NETBEANS_INTG
125 static void	nv_nbcmd(cmdarg_T *cap);
126 #endif
127 #ifdef FEAT_DND
128 static void	nv_drop(cmdarg_T *cap);
129 #endif
130 static void	nv_cursorhold(cmdarg_T *cap);
131 
132 static char *e_noident = N_("E349: No identifier under cursor");
133 
134 /*
135  * Function to be called for a Normal or Visual mode command.
136  * The argument is a cmdarg_T.
137  */
138 typedef void (*nv_func_T)(cmdarg_T *cap);
139 
140 // Values for cmd_flags.
141 #define NV_NCH	    0x01	  // may need to get a second char
142 #define NV_NCH_NOP  (0x02|NV_NCH) // get second char when no operator pending
143 #define NV_NCH_ALW  (0x04|NV_NCH) // always get a second char
144 #define NV_LANG	    0x08	// second char needs language adjustment
145 
146 #define NV_SS	    0x10	// may start selection
147 #define NV_SSS	    0x20	// may start selection with shift modifier
148 #define NV_STS	    0x40	// may stop selection without shift modif.
149 #define NV_RL	    0x80	// 'rightleft' modifies command
150 #define NV_KEEPREG  0x100	// don't clear regname
151 #define NV_NCW	    0x200	// not allowed in command-line window
152 
153 /*
154  * Generally speaking, every Normal mode command should either clear any
155  * pending operator (with *clearop*()), or set the motion type variable
156  * oap->motion_type.
157  *
158  * When a cursor motion command is made, it is marked as being a character or
159  * line oriented motion.  Then, if an operator is in effect, the operation
160  * becomes character or line oriented accordingly.
161  */
162 
163 /*
164  * This table contains one entry for every Normal or Visual mode command.
165  * The order doesn't matter, init_normal_cmds() will create a sorted index.
166  * It is faster when all keys from zero to '~' are present.
167  */
168 static const struct nv_cmd
169 {
170     int		cmd_char;	// (first) command character
171     nv_func_T   cmd_func;	// function for this command
172     short_u	cmd_flags;	// NV_ flags
173     short	cmd_arg;	// value for ca.arg
174 } nv_cmds[] =
175 {
176     {NUL,	nv_error,	0,			0},
177     {Ctrl_A,	nv_addsub,	0,			0},
178     {Ctrl_B,	nv_page,	NV_STS,			BACKWARD},
179     {Ctrl_C,	nv_esc,		0,			TRUE},
180     {Ctrl_D,	nv_halfpage,	0,			0},
181     {Ctrl_E,	nv_scroll_line,	0,			TRUE},
182     {Ctrl_F,	nv_page,	NV_STS,			FORWARD},
183     {Ctrl_G,	nv_ctrlg,	0,			0},
184     {Ctrl_H,	nv_ctrlh,	0,			0},
185     {Ctrl_I,	nv_pcmark,	0,			0},
186     {NL,	nv_down,	0,			FALSE},
187     {Ctrl_K,	nv_error,	0,			0},
188     {Ctrl_L,	nv_clear,	0,			0},
189     {CAR,	nv_down,	0,			TRUE},
190     {Ctrl_N,	nv_down,	NV_STS,			FALSE},
191     {Ctrl_O,	nv_ctrlo,	0,			0},
192     {Ctrl_P,	nv_up,		NV_STS,			FALSE},
193     {Ctrl_Q,	nv_visual,	0,			FALSE},
194     {Ctrl_R,	nv_redo,	0,			0},
195     {Ctrl_S,	nv_ignore,	0,			0},
196     {Ctrl_T,	nv_tagpop,	NV_NCW,			0},
197     {Ctrl_U,	nv_halfpage,	0,			0},
198     {Ctrl_V,	nv_visual,	0,			FALSE},
199     {'V',	nv_visual,	0,			FALSE},
200     {'v',	nv_visual,	0,			FALSE},
201     {Ctrl_W,	nv_window,	0,			0},
202     {Ctrl_X,	nv_addsub,	0,			0},
203     {Ctrl_Y,	nv_scroll_line,	0,			FALSE},
204     {Ctrl_Z,	nv_suspend,	0,			0},
205     {ESC,	nv_esc,		0,			FALSE},
206     {Ctrl_BSL,	nv_normal,	NV_NCH_ALW,		0},
207     {Ctrl_RSB,	nv_ident,	NV_NCW,			0},
208     {Ctrl_HAT,	nv_hat,		NV_NCW,			0},
209     {Ctrl__,	nv_error,	0,			0},
210     {' ',	nv_right,	0,			0},
211     {'!',	nv_operator,	0,			0},
212     {'"',	nv_regname,	NV_NCH_NOP|NV_KEEPREG,	0},
213     {'#',	nv_ident,	0,			0},
214     {'$',	nv_dollar,	0,			0},
215     {'%',	nv_percent,	0,			0},
216     {'&',	nv_optrans,	0,			0},
217     {'\'',	nv_gomark,	NV_NCH_ALW,		TRUE},
218     {'(',	nv_brace,	0,			BACKWARD},
219     {')',	nv_brace,	0,			FORWARD},
220     {'*',	nv_ident,	0,			0},
221     {'+',	nv_down,	0,			TRUE},
222     {',',	nv_csearch,	0,			TRUE},
223     {'-',	nv_up,		0,			TRUE},
224     {'.',	nv_dot,		NV_KEEPREG,		0},
225     {'/',	nv_search,	0,			FALSE},
226     {'0',	nv_beginline,	0,			0},
227     {'1',	nv_ignore,	0,			0},
228     {'2',	nv_ignore,	0,			0},
229     {'3',	nv_ignore,	0,			0},
230     {'4',	nv_ignore,	0,			0},
231     {'5',	nv_ignore,	0,			0},
232     {'6',	nv_ignore,	0,			0},
233     {'7',	nv_ignore,	0,			0},
234     {'8',	nv_ignore,	0,			0},
235     {'9',	nv_ignore,	0,			0},
236     {':',	nv_colon,	0,			0},
237     {';',	nv_csearch,	0,			FALSE},
238     {'<',	nv_operator,	NV_RL,			0},
239     {'=',	nv_operator,	0,			0},
240     {'>',	nv_operator,	NV_RL,			0},
241     {'?',	nv_search,	0,			FALSE},
242     {'@',	nv_at,		NV_NCH_NOP,		FALSE},
243     {'A',	nv_edit,	0,			0},
244     {'B',	nv_bck_word,	0,			1},
245     {'C',	nv_abbrev,	NV_KEEPREG,		0},
246     {'D',	nv_abbrev,	NV_KEEPREG,		0},
247     {'E',	nv_wordcmd,	0,			TRUE},
248     {'F',	nv_csearch,	NV_NCH_ALW|NV_LANG,	BACKWARD},
249     {'G',	nv_goto,	0,			TRUE},
250     {'H',	nv_scroll,	0,			0},
251     {'I',	nv_edit,	0,			0},
252     {'J',	nv_join,	0,			0},
253     {'K',	nv_ident,	0,			0},
254     {'L',	nv_scroll,	0,			0},
255     {'M',	nv_scroll,	0,			0},
256     {'N',	nv_next,	0,			SEARCH_REV},
257     {'O',	nv_open,	0,			0},
258     {'P',	nv_put,		0,			0},
259     {'Q',	nv_exmode,	NV_NCW,			0},
260     {'R',	nv_Replace,	0,			FALSE},
261     {'S',	nv_subst,	NV_KEEPREG,		0},
262     {'T',	nv_csearch,	NV_NCH_ALW|NV_LANG,	BACKWARD},
263     {'U',	nv_Undo,	0,			0},
264     {'W',	nv_wordcmd,	0,			TRUE},
265     {'X',	nv_abbrev,	NV_KEEPREG,		0},
266     {'Y',	nv_abbrev,	NV_KEEPREG,		0},
267     {'Z',	nv_Zet,		NV_NCH_NOP|NV_NCW,	0},
268     {'[',	nv_brackets,	NV_NCH_ALW,		BACKWARD},
269     {'\\',	nv_error,	0,			0},
270     {']',	nv_brackets,	NV_NCH_ALW,		FORWARD},
271     {'^',	nv_beginline,	0,			BL_WHITE | BL_FIX},
272     {'_',	nv_lineop,	0,			0},
273     {'`',	nv_gomark,	NV_NCH_ALW,		FALSE},
274     {'a',	nv_edit,	NV_NCH,			0},
275     {'b',	nv_bck_word,	0,			0},
276     {'c',	nv_operator,	0,			0},
277     {'d',	nv_operator,	0,			0},
278     {'e',	nv_wordcmd,	0,			FALSE},
279     {'f',	nv_csearch,	NV_NCH_ALW|NV_LANG,	FORWARD},
280     {'g',	nv_g_cmd,	NV_NCH_ALW,		FALSE},
281     {'h',	nv_left,	NV_RL,			0},
282     {'i',	nv_edit,	NV_NCH,			0},
283     {'j',	nv_down,	0,			FALSE},
284     {'k',	nv_up,		0,			FALSE},
285     {'l',	nv_right,	NV_RL,			0},
286     {'m',	nv_mark,	NV_NCH_NOP,		0},
287     {'n',	nv_next,	0,			0},
288     {'o',	nv_open,	0,			0},
289     {'p',	nv_put,		0,			0},
290     {'q',	nv_record,	NV_NCH,			0},
291     {'r',	nv_replace,	NV_NCH_NOP|NV_LANG,	0},
292     {'s',	nv_subst,	NV_KEEPREG,		0},
293     {'t',	nv_csearch,	NV_NCH_ALW|NV_LANG,	FORWARD},
294     {'u',	nv_undo,	0,			0},
295     {'w',	nv_wordcmd,	0,			FALSE},
296     {'x',	nv_abbrev,	NV_KEEPREG,		0},
297     {'y',	nv_operator,	0,			0},
298     {'z',	nv_zet,		NV_NCH_ALW,		0},
299     {'{',	nv_findpar,	0,			BACKWARD},
300     {'|',	nv_pipe,	0,			0},
301     {'}',	nv_findpar,	0,			FORWARD},
302     {'~',	nv_tilde,	0,			0},
303 
304     // pound sign
305     {POUND,	nv_ident,	0,			0},
306     {K_MOUSEUP, nv_mousescroll,	0,			MSCR_UP},
307     {K_MOUSEDOWN, nv_mousescroll, 0,			MSCR_DOWN},
308     {K_MOUSELEFT, nv_mousescroll, 0,			MSCR_LEFT},
309     {K_MOUSERIGHT, nv_mousescroll, 0,			MSCR_RIGHT},
310     {K_LEFTMOUSE, nv_mouse,	0,			0},
311     {K_LEFTMOUSE_NM, nv_mouse,	0,			0},
312     {K_LEFTDRAG, nv_mouse,	0,			0},
313     {K_LEFTRELEASE, nv_mouse,	0,			0},
314     {K_LEFTRELEASE_NM, nv_mouse, 0,			0},
315     {K_MOUSEMOVE, nv_mouse,	0,			0},
316     {K_MIDDLEMOUSE, nv_mouse,	0,			0},
317     {K_MIDDLEDRAG, nv_mouse,	0,			0},
318     {K_MIDDLERELEASE, nv_mouse,	0,			0},
319     {K_RIGHTMOUSE, nv_mouse,	0,			0},
320     {K_RIGHTDRAG, nv_mouse,	0,			0},
321     {K_RIGHTRELEASE, nv_mouse,	0,			0},
322     {K_X1MOUSE, nv_mouse,	0,			0},
323     {K_X1DRAG, nv_mouse,	0,			0},
324     {K_X1RELEASE, nv_mouse,	0,			0},
325     {K_X2MOUSE, nv_mouse,	0,			0},
326     {K_X2DRAG, nv_mouse,	0,			0},
327     {K_X2RELEASE, nv_mouse,	0,			0},
328     {K_IGNORE,	nv_ignore,	NV_KEEPREG,		0},
329     {K_NOP,	nv_nop,		0,			0},
330     {K_INS,	nv_edit,	0,			0},
331     {K_KINS,	nv_edit,	0,			0},
332     {K_BS,	nv_ctrlh,	0,			0},
333     {K_UP,	nv_up,		NV_SSS|NV_STS,		FALSE},
334     {K_S_UP,	nv_page,	NV_SS,			BACKWARD},
335     {K_DOWN,	nv_down,	NV_SSS|NV_STS,		FALSE},
336     {K_S_DOWN,	nv_page,	NV_SS,			FORWARD},
337     {K_LEFT,	nv_left,	NV_SSS|NV_STS|NV_RL,	0},
338     {K_S_LEFT,	nv_bck_word,	NV_SS|NV_RL,		0},
339     {K_C_LEFT,	nv_bck_word,	NV_SSS|NV_RL|NV_STS,	1},
340     {K_RIGHT,	nv_right,	NV_SSS|NV_STS|NV_RL,	0},
341     {K_S_RIGHT,	nv_wordcmd,	NV_SS|NV_RL,		FALSE},
342     {K_C_RIGHT,	nv_wordcmd,	NV_SSS|NV_RL|NV_STS,	TRUE},
343     {K_PAGEUP,	nv_page,	NV_SSS|NV_STS,		BACKWARD},
344     {K_KPAGEUP,	nv_page,	NV_SSS|NV_STS,		BACKWARD},
345     {K_PAGEDOWN, nv_page,	NV_SSS|NV_STS,		FORWARD},
346     {K_KPAGEDOWN, nv_page,	NV_SSS|NV_STS,		FORWARD},
347     {K_END,	nv_end,		NV_SSS|NV_STS,		FALSE},
348     {K_KEND,	nv_end,		NV_SSS|NV_STS,		FALSE},
349     {K_S_END,	nv_end,		NV_SS,			FALSE},
350     {K_C_END,	nv_end,		NV_SSS|NV_STS,		TRUE},
351     {K_HOME,	nv_home,	NV_SSS|NV_STS,		0},
352     {K_KHOME,	nv_home,	NV_SSS|NV_STS,		0},
353     {K_S_HOME,	nv_home,	NV_SS,			0},
354     {K_C_HOME,	nv_goto,	NV_SSS|NV_STS,		FALSE},
355     {K_DEL,	nv_abbrev,	0,			0},
356     {K_KDEL,	nv_abbrev,	0,			0},
357     {K_UNDO,	nv_kundo,	0,			0},
358     {K_HELP,	nv_help,	NV_NCW,			0},
359     {K_F1,	nv_help,	NV_NCW,			0},
360     {K_XF1,	nv_help,	NV_NCW,			0},
361     {K_SELECT,	nv_select,	0,			0},
362 #ifdef FEAT_GUI
363     {K_VER_SCROLLBAR, nv_ver_scrollbar, 0,		0},
364     {K_HOR_SCROLLBAR, nv_hor_scrollbar, 0,		0},
365 #endif
366 #ifdef FEAT_GUI_TABLINE
367     {K_TABLINE, nv_tabline,	0,			0},
368     {K_TABMENU, nv_tabmenu,	0,			0},
369 #endif
370 #ifdef FEAT_NETBEANS_INTG
371     {K_F21,	nv_nbcmd,	NV_NCH_ALW,		0},
372 #endif
373 #ifdef FEAT_DND
374     {K_DROP,	nv_drop,	NV_STS,			0},
375 #endif
376     {K_CURSORHOLD, nv_cursorhold, NV_KEEPREG,		0},
377     {K_PS,	nv_edit,	0,			0},
378 };
379 
380 // Number of commands in nv_cmds[].
381 #define NV_CMDS_SIZE (sizeof(nv_cmds) / sizeof(struct nv_cmd))
382 
383 // Sorted index of commands in nv_cmds[].
384 static short nv_cmd_idx[NV_CMDS_SIZE];
385 
386 // The highest index for which
387 // nv_cmds[idx].cmd_char == nv_cmd_idx[nv_cmds[idx].cmd_char]
388 static int nv_max_linear;
389 
390 /*
391  * Compare functions for qsort() below, that checks the command character
392  * through the index in nv_cmd_idx[].
393  */
394     static int
395 nv_compare(const void *s1, const void *s2)
396 {
397     int		c1, c2;
398 
399     // The commands are sorted on absolute value.
400     c1 = nv_cmds[*(const short *)s1].cmd_char;
401     c2 = nv_cmds[*(const short *)s2].cmd_char;
402     if (c1 < 0)
403 	c1 = -c1;
404     if (c2 < 0)
405 	c2 = -c2;
406     return c1 - c2;
407 }
408 
409 /*
410  * Initialize the nv_cmd_idx[] table.
411  */
412     void
413 init_normal_cmds(void)
414 {
415     int		i;
416 
417     // Fill the index table with a one to one relation.
418     for (i = 0; i < (int)NV_CMDS_SIZE; ++i)
419 	nv_cmd_idx[i] = i;
420 
421     // Sort the commands by the command character.
422     qsort((void *)&nv_cmd_idx, (size_t)NV_CMDS_SIZE, sizeof(short), nv_compare);
423 
424     // Find the first entry that can't be indexed by the command character.
425     for (i = 0; i < (int)NV_CMDS_SIZE; ++i)
426 	if (i != nv_cmds[nv_cmd_idx[i]].cmd_char)
427 	    break;
428     nv_max_linear = i - 1;
429 }
430 
431 /*
432  * Search for a command in the commands table.
433  * Returns -1 for invalid command.
434  */
435     static int
436 find_command(int cmdchar)
437 {
438     int		i;
439     int		idx;
440     int		top, bot;
441     int		c;
442 
443     // A multi-byte character is never a command.
444     if (cmdchar >= 0x100)
445 	return -1;
446 
447     // We use the absolute value of the character.  Special keys have a
448     // negative value, but are sorted on their absolute value.
449     if (cmdchar < 0)
450 	cmdchar = -cmdchar;
451 
452     // If the character is in the first part: The character is the index into
453     // nv_cmd_idx[].
454     if (cmdchar <= nv_max_linear)
455 	return nv_cmd_idx[cmdchar];
456 
457     // Perform a binary search.
458     bot = nv_max_linear + 1;
459     top = NV_CMDS_SIZE - 1;
460     idx = -1;
461     while (bot <= top)
462     {
463 	i = (top + bot) / 2;
464 	c = nv_cmds[nv_cmd_idx[i]].cmd_char;
465 	if (c < 0)
466 	    c = -c;
467 	if (cmdchar == c)
468 	{
469 	    idx = nv_cmd_idx[i];
470 	    break;
471 	}
472 	if (cmdchar > c)
473 	    bot = i + 1;
474 	else
475 	    top = i - 1;
476     }
477     return idx;
478 }
479 
480 /*
481  * Execute a command in Normal mode.
482  */
483     void
484 normal_cmd(
485     oparg_T	*oap,
486     int		toplevel UNUSED)	// TRUE when called from main()
487 {
488     cmdarg_T	ca;			// command arguments
489     int		c;
490     int		ctrl_w = FALSE;		// got CTRL-W command
491     int		old_col = curwin->w_curswant;
492 #ifdef FEAT_CMDL_INFO
493     int		need_flushbuf;		// need to call out_flush()
494 #endif
495     pos_T	old_pos;		// cursor position before command
496     int		mapped_len;
497     static int	old_mapped_len = 0;
498     int		idx;
499 #ifdef FEAT_EVAL
500     int		set_prevcount = FALSE;
501 #endif
502     int		save_did_cursorhold = did_cursorhold;
503 
504     CLEAR_FIELD(ca);	// also resets ca.retval
505     ca.oap = oap;
506 
507     // Use a count remembered from before entering an operator.  After typing
508     // "3d" we return from normal_cmd() and come back here, the "3" is
509     // remembered in "opcount".
510     ca.opcount = opcount;
511 
512     /*
513      * If there is an operator pending, then the command we take this time
514      * will terminate it. Finish_op tells us to finish the operation before
515      * returning this time (unless the operation was cancelled).
516      */
517 #ifdef CURSOR_SHAPE
518     c = finish_op;
519 #endif
520     finish_op = (oap->op_type != OP_NOP);
521 #ifdef CURSOR_SHAPE
522     if (finish_op != c)
523     {
524 	ui_cursor_shape();		// may show different cursor shape
525 # ifdef FEAT_MOUSESHAPE
526 	update_mouseshape(-1);
527 # endif
528     }
529 #endif
530 
531     // When not finishing an operator and no register name typed, reset the
532     // count.
533     if (!finish_op && !oap->regname)
534     {
535 	ca.opcount = 0;
536 #ifdef FEAT_EVAL
537 	set_prevcount = TRUE;
538 #endif
539     }
540 
541     // Restore counts from before receiving K_CURSORHOLD.  This means after
542     // typing "3", handling K_CURSORHOLD and then typing "2" we get "32", not
543     // "3 * 2".
544     if (oap->prev_opcount > 0 || oap->prev_count0 > 0)
545     {
546 	ca.opcount = oap->prev_opcount;
547 	ca.count0 = oap->prev_count0;
548 	oap->prev_opcount = 0;
549 	oap->prev_count0 = 0;
550     }
551 
552     mapped_len = typebuf_maplen();
553 
554     State = NORMAL_BUSY;
555 #ifdef USE_ON_FLY_SCROLL
556     dont_scroll = FALSE;	// allow scrolling here
557 #endif
558 
559 #ifdef FEAT_EVAL
560     // Set v:count here, when called from main() and not a stuffed
561     // command, so that v:count can be used in an expression mapping
562     // when there is no count. Do set it for redo.
563     if (toplevel && readbuf1_empty())
564 	set_vcount_ca(&ca, &set_prevcount);
565 #endif
566 
567     /*
568      * Get the command character from the user.
569      */
570     c = safe_vgetc();
571     LANGMAP_ADJUST(c, get_real_state() != SELECTMODE);
572 
573     /*
574      * If a mapping was started in Visual or Select mode, remember the length
575      * of the mapping.  This is used below to not return to Insert mode for as
576      * long as the mapping is being executed.
577      */
578     if (restart_edit == 0)
579 	old_mapped_len = 0;
580     else if (old_mapped_len
581 		|| (VIsual_active && mapped_len == 0 && typebuf_maplen() > 0))
582 	old_mapped_len = typebuf_maplen();
583 
584     if (c == NUL)
585 	c = K_ZERO;
586 
587     /*
588      * In Select mode, typed text replaces the selection.
589      */
590     if (VIsual_active
591 	    && VIsual_select
592 	    && (vim_isprintc(c) || c == NL || c == CAR || c == K_KENTER))
593     {
594 	// Fake a "c"hange command.  When "restart_edit" is set (e.g., because
595 	// 'insertmode' is set) fake a "d"elete command, Insert mode will
596 	// restart automatically.
597 	// Insert the typed character in the typeahead buffer, so that it can
598 	// be mapped in Insert mode.  Required for ":lmap" to work.
599 	ins_char_typebuf(vgetc_char, vgetc_mod_mask);
600 	if (restart_edit != 0)
601 	    c = 'd';
602 	else
603 	    c = 'c';
604 	msg_nowait = TRUE;	// don't delay going to insert mode
605 	old_mapped_len = 0;	// do go to Insert mode
606     }
607 
608 #ifdef FEAT_CMDL_INFO
609     need_flushbuf = add_to_showcmd(c);
610 #endif
611 
612 getcount:
613     if (!(VIsual_active && VIsual_select))
614     {
615 	/*
616 	 * Handle a count before a command and compute ca.count0.
617 	 * Note that '0' is a command and not the start of a count, but it's
618 	 * part of a count after other digits.
619 	 */
620 	while (    (c >= '1' && c <= '9')
621 		|| (ca.count0 != 0 && (c == K_DEL || c == K_KDEL || c == '0')))
622 	{
623 	    if (c == K_DEL || c == K_KDEL)
624 	    {
625 		ca.count0 /= 10;
626 #ifdef FEAT_CMDL_INFO
627 		del_from_showcmd(4);	// delete the digit and ~@%
628 #endif
629 	    }
630 	    else
631 		ca.count0 = ca.count0 * 10 + (c - '0');
632 	    if (ca.count0 < 0)	    // got too large!
633 		ca.count0 = 999999999L;
634 #ifdef FEAT_EVAL
635 	    // Set v:count here, when called from main() and not a stuffed
636 	    // command, so that v:count can be used in an expression mapping
637 	    // right after the count. Do set it for redo.
638 	    if (toplevel && readbuf1_empty())
639 		set_vcount_ca(&ca, &set_prevcount);
640 #endif
641 	    if (ctrl_w)
642 	    {
643 		++no_mapping;
644 		++allow_keys;		// no mapping for nchar, but keys
645 	    }
646 	    ++no_zero_mapping;		// don't map zero here
647 	    c = plain_vgetc();
648 	    LANGMAP_ADJUST(c, TRUE);
649 	    --no_zero_mapping;
650 	    if (ctrl_w)
651 	    {
652 		--no_mapping;
653 		--allow_keys;
654 	    }
655 #ifdef FEAT_CMDL_INFO
656 	    need_flushbuf |= add_to_showcmd(c);
657 #endif
658 	}
659 
660 	/*
661 	 * If we got CTRL-W there may be a/another count
662 	 */
663 	if (c == Ctrl_W && !ctrl_w && oap->op_type == OP_NOP)
664 	{
665 	    ctrl_w = TRUE;
666 	    ca.opcount = ca.count0;	// remember first count
667 	    ca.count0 = 0;
668 	    ++no_mapping;
669 	    ++allow_keys;		// no mapping for nchar, but keys
670 	    c = plain_vgetc();		// get next character
671 	    LANGMAP_ADJUST(c, TRUE);
672 	    --no_mapping;
673 	    --allow_keys;
674 #ifdef FEAT_CMDL_INFO
675 	    need_flushbuf |= add_to_showcmd(c);
676 #endif
677 	    goto getcount;		// jump back
678 	}
679     }
680 
681     if (c == K_CURSORHOLD)
682     {
683 	// Save the count values so that ca.opcount and ca.count0 are exactly
684 	// the same when coming back here after handling K_CURSORHOLD.
685 	oap->prev_opcount = ca.opcount;
686 	oap->prev_count0 = ca.count0;
687     }
688     else if (ca.opcount != 0)
689     {
690 	/*
691 	 * If we're in the middle of an operator (including after entering a
692 	 * yank buffer with '"') AND we had a count before the operator, then
693 	 * that count overrides the current value of ca.count0.
694 	 * What this means effectively, is that commands like "3dw" get turned
695 	 * into "d3w" which makes things fall into place pretty neatly.
696 	 * If you give a count before AND after the operator, they are
697 	 * multiplied.
698 	 */
699 	if (ca.count0)
700 	    ca.count0 *= ca.opcount;
701 	else
702 	    ca.count0 = ca.opcount;
703     }
704 
705     /*
706      * Always remember the count.  It will be set to zero (on the next call,
707      * above) when there is no pending operator.
708      * When called from main(), save the count for use by the "count" built-in
709      * variable.
710      */
711     ca.opcount = ca.count0;
712     ca.count1 = (ca.count0 == 0 ? 1 : ca.count0);
713 
714 #ifdef FEAT_EVAL
715     /*
716      * Only set v:count when called from main() and not a stuffed command.
717      * Do set it for redo.
718      */
719     if (toplevel && readbuf1_empty())
720 	set_vcount(ca.count0, ca.count1, set_prevcount);
721 #endif
722 
723     /*
724      * Find the command character in the table of commands.
725      * For CTRL-W we already got nchar when looking for a count.
726      */
727     if (ctrl_w)
728     {
729 	ca.nchar = c;
730 	ca.cmdchar = Ctrl_W;
731     }
732     else
733 	ca.cmdchar = c;
734     idx = find_command(ca.cmdchar);
735     if (idx < 0)
736     {
737 	// Not a known command: beep.
738 	clearopbeep(oap);
739 	goto normal_end;
740     }
741 
742     if (text_locked() && (nv_cmds[idx].cmd_flags & NV_NCW))
743     {
744 	// This command is not allowed while editing a cmdline: beep.
745 	clearopbeep(oap);
746 	text_locked_msg();
747 	goto normal_end;
748     }
749     if ((nv_cmds[idx].cmd_flags & NV_NCW) && curbuf_locked())
750 	goto normal_end;
751 
752     /*
753      * In Visual/Select mode, a few keys are handled in a special way.
754      */
755     if (VIsual_active)
756     {
757 	// when 'keymodel' contains "stopsel" may stop Select/Visual mode
758 	if (km_stopsel
759 		&& (nv_cmds[idx].cmd_flags & NV_STS)
760 		&& !(mod_mask & MOD_MASK_SHIFT))
761 	{
762 	    end_visual_mode();
763 	    redraw_curbuf_later(INVERTED);
764 	}
765 
766 	// Keys that work different when 'keymodel' contains "startsel"
767 	if (km_startsel)
768 	{
769 	    if (nv_cmds[idx].cmd_flags & NV_SS)
770 	    {
771 		unshift_special(&ca);
772 		idx = find_command(ca.cmdchar);
773 		if (idx < 0)
774 		{
775 		    // Just in case
776 		    clearopbeep(oap);
777 		    goto normal_end;
778 		}
779 	    }
780 	    else if ((nv_cmds[idx].cmd_flags & NV_SSS)
781 					       && (mod_mask & MOD_MASK_SHIFT))
782 		mod_mask &= ~MOD_MASK_SHIFT;
783 	}
784     }
785 
786 #ifdef FEAT_RIGHTLEFT
787     if (curwin->w_p_rl && KeyTyped && !KeyStuffed
788 					  && (nv_cmds[idx].cmd_flags & NV_RL))
789     {
790 	// Invert horizontal movements and operations.  Only when typed by the
791 	// user directly, not when the result of a mapping or "x" translated
792 	// to "dl".
793 	switch (ca.cmdchar)
794 	{
795 	    case 'l':	    ca.cmdchar = 'h'; break;
796 	    case K_RIGHT:   ca.cmdchar = K_LEFT; break;
797 	    case K_S_RIGHT: ca.cmdchar = K_S_LEFT; break;
798 	    case K_C_RIGHT: ca.cmdchar = K_C_LEFT; break;
799 	    case 'h':	    ca.cmdchar = 'l'; break;
800 	    case K_LEFT:    ca.cmdchar = K_RIGHT; break;
801 	    case K_S_LEFT:  ca.cmdchar = K_S_RIGHT; break;
802 	    case K_C_LEFT:  ca.cmdchar = K_C_RIGHT; break;
803 	    case '>':	    ca.cmdchar = '<'; break;
804 	    case '<':	    ca.cmdchar = '>'; break;
805 	}
806 	idx = find_command(ca.cmdchar);
807     }
808 #endif
809 
810     /*
811      * Get an additional character if we need one.
812      */
813     if ((nv_cmds[idx].cmd_flags & NV_NCH)
814 	    && (((nv_cmds[idx].cmd_flags & NV_NCH_NOP) == NV_NCH_NOP
815 		    && oap->op_type == OP_NOP)
816 		|| (nv_cmds[idx].cmd_flags & NV_NCH_ALW) == NV_NCH_ALW
817 		|| (ca.cmdchar == 'q'
818 		    && oap->op_type == OP_NOP
819 		    && reg_recording == 0
820 		    && reg_executing == 0)
821 		|| ((ca.cmdchar == 'a' || ca.cmdchar == 'i')
822 		    && (oap->op_type != OP_NOP || VIsual_active))))
823     {
824 	int	*cp;
825 	int	repl = FALSE;	// get character for replace mode
826 	int	lit = FALSE;	// get extra character literally
827 	int	langmap_active = FALSE;    // using :lmap mappings
828 	int	lang;		// getting a text character
829 #ifdef HAVE_INPUT_METHOD
830 	int	save_smd;	// saved value of p_smd
831 #endif
832 
833 	++no_mapping;
834 	++allow_keys;		// no mapping for nchar, but allow key codes
835 	// Don't generate a CursorHold event here, most commands can't handle
836 	// it, e.g., nv_replace(), nv_csearch().
837 	did_cursorhold = TRUE;
838 	if (ca.cmdchar == 'g')
839 	{
840 	    /*
841 	     * For 'g' get the next character now, so that we can check for
842 	     * "gr", "g'" and "g`".
843 	     */
844 	    ca.nchar = plain_vgetc();
845 	    LANGMAP_ADJUST(ca.nchar, TRUE);
846 #ifdef FEAT_CMDL_INFO
847 	    need_flushbuf |= add_to_showcmd(ca.nchar);
848 #endif
849 	    if (ca.nchar == 'r' || ca.nchar == '\'' || ca.nchar == '`'
850 						       || ca.nchar == Ctrl_BSL)
851 	    {
852 		cp = &ca.extra_char;	// need to get a third character
853 		if (ca.nchar != 'r')
854 		    lit = TRUE;			// get it literally
855 		else
856 		    repl = TRUE;		// get it in replace mode
857 	    }
858 	    else
859 		cp = NULL;		// no third character needed
860 	}
861 	else
862 	{
863 	    if (ca.cmdchar == 'r')		// get it in replace mode
864 		repl = TRUE;
865 	    cp = &ca.nchar;
866 	}
867 	lang = (repl || (nv_cmds[idx].cmd_flags & NV_LANG));
868 
869 	/*
870 	 * Get a second or third character.
871 	 */
872 	if (cp != NULL)
873 	{
874 	    if (repl)
875 	    {
876 		State = REPLACE;	// pretend Replace mode
877 #ifdef CURSOR_SHAPE
878 		ui_cursor_shape();	// show different cursor shape
879 #endif
880 	    }
881 	    if (lang && curbuf->b_p_iminsert == B_IMODE_LMAP)
882 	    {
883 		// Allow mappings defined with ":lmap".
884 		--no_mapping;
885 		--allow_keys;
886 		if (repl)
887 		    State = LREPLACE;
888 		else
889 		    State = LANGMAP;
890 		langmap_active = TRUE;
891 	    }
892 #ifdef HAVE_INPUT_METHOD
893 	    save_smd = p_smd;
894 	    p_smd = FALSE;	// Don't let the IM code show the mode here
895 	    if (lang && curbuf->b_p_iminsert == B_IMODE_IM)
896 		im_set_active(TRUE);
897 #endif
898 
899 	    *cp = plain_vgetc();
900 
901 	    if (langmap_active)
902 	    {
903 		// Undo the decrement done above
904 		++no_mapping;
905 		++allow_keys;
906 		State = NORMAL_BUSY;
907 	    }
908 #ifdef HAVE_INPUT_METHOD
909 	    if (lang)
910 	    {
911 		if (curbuf->b_p_iminsert != B_IMODE_LMAP)
912 		    im_save_status(&curbuf->b_p_iminsert);
913 		im_set_active(FALSE);
914 	    }
915 	    p_smd = save_smd;
916 #endif
917 	    State = NORMAL_BUSY;
918 #ifdef FEAT_CMDL_INFO
919 	    need_flushbuf |= add_to_showcmd(*cp);
920 #endif
921 
922 	    if (!lit)
923 	    {
924 #ifdef FEAT_DIGRAPHS
925 		// Typing CTRL-K gets a digraph.
926 		if (*cp == Ctrl_K
927 			&& ((nv_cmds[idx].cmd_flags & NV_LANG)
928 			    || cp == &ca.extra_char)
929 			&& vim_strchr(p_cpo, CPO_DIGRAPH) == NULL)
930 		{
931 		    c = get_digraph(FALSE);
932 		    if (c > 0)
933 		    {
934 			*cp = c;
935 # ifdef FEAT_CMDL_INFO
936 			// Guessing how to update showcmd here...
937 			del_from_showcmd(3);
938 			need_flushbuf |= add_to_showcmd(*cp);
939 # endif
940 		    }
941 		}
942 #endif
943 
944 		// adjust chars > 127, except after "tTfFr" commands
945 		LANGMAP_ADJUST(*cp, !lang);
946 #ifdef FEAT_RIGHTLEFT
947 		// adjust Hebrew mapped char
948 		if (p_hkmap && lang && KeyTyped)
949 		    *cp = hkmap(*cp);
950 #endif
951 	    }
952 
953 	    /*
954 	     * When the next character is CTRL-\ a following CTRL-N means the
955 	     * command is aborted and we go to Normal mode.
956 	     */
957 	    if (cp == &ca.extra_char
958 		    && ca.nchar == Ctrl_BSL
959 		    && (ca.extra_char == Ctrl_N || ca.extra_char == Ctrl_G))
960 	    {
961 		ca.cmdchar = Ctrl_BSL;
962 		ca.nchar = ca.extra_char;
963 		idx = find_command(ca.cmdchar);
964 	    }
965 	    else if ((ca.nchar == 'n' || ca.nchar == 'N') && ca.cmdchar == 'g')
966 		ca.oap->op_type = get_op_type(*cp, NUL);
967 	    else if (*cp == Ctrl_BSL)
968 	    {
969 		long towait = (p_ttm >= 0 ? p_ttm : p_tm);
970 
971 		// There is a busy wait here when typing "f<C-\>" and then
972 		// something different from CTRL-N.  Can't be avoided.
973 		while ((c = vpeekc()) <= 0 && towait > 0L)
974 		{
975 		    do_sleep(towait > 50L ? 50L : towait);
976 		    towait -= 50L;
977 		}
978 		if (c > 0)
979 		{
980 		    c = plain_vgetc();
981 		    if (c != Ctrl_N && c != Ctrl_G)
982 			vungetc(c);
983 		    else
984 		    {
985 			ca.cmdchar = Ctrl_BSL;
986 			ca.nchar = c;
987 			idx = find_command(ca.cmdchar);
988 		    }
989 		}
990 	    }
991 
992 	    // When getting a text character and the next character is a
993 	    // multi-byte character, it could be a composing character.
994 	    // However, don't wait for it to arrive. Also, do enable mapping,
995 	    // because if it's put back with vungetc() it's too late to apply
996 	    // mapping.
997 	    --no_mapping;
998 	    while (enc_utf8 && lang && (c = vpeekc()) > 0
999 				 && (c >= 0x100 || MB_BYTE2LEN(vpeekc()) > 1))
1000 	    {
1001 		c = plain_vgetc();
1002 		if (!utf_iscomposing(c))
1003 		{
1004 		    vungetc(c);		// it wasn't, put it back
1005 		    break;
1006 		}
1007 		else if (ca.ncharC1 == 0)
1008 		    ca.ncharC1 = c;
1009 		else
1010 		    ca.ncharC2 = c;
1011 	    }
1012 	    ++no_mapping;
1013 	}
1014 	--no_mapping;
1015 	--allow_keys;
1016     }
1017 
1018 #ifdef FEAT_CMDL_INFO
1019     /*
1020      * Flush the showcmd characters onto the screen so we can see them while
1021      * the command is being executed.  Only do this when the shown command was
1022      * actually displayed, otherwise this will slow down a lot when executing
1023      * mappings.
1024      */
1025     if (need_flushbuf)
1026 	out_flush();
1027 #endif
1028     if (ca.cmdchar != K_IGNORE)
1029     {
1030 	if (ex_normal_busy)
1031 	    did_cursorhold = save_did_cursorhold;
1032 	else
1033 	    did_cursorhold = FALSE;
1034     }
1035 
1036     State = NORMAL;
1037 
1038     if (ca.nchar == ESC)
1039     {
1040 	clearop(oap);
1041 	if (restart_edit == 0 && goto_im())
1042 	    restart_edit = 'a';
1043 	goto normal_end;
1044     }
1045 
1046     if (ca.cmdchar != K_IGNORE)
1047     {
1048 	msg_didout = FALSE;    // don't scroll screen up for normal command
1049 	msg_col = 0;
1050     }
1051 
1052     old_pos = curwin->w_cursor;		// remember where cursor was
1053 
1054     // When 'keymodel' contains "startsel" some keys start Select/Visual
1055     // mode.
1056     if (!VIsual_active && km_startsel)
1057     {
1058 	if (nv_cmds[idx].cmd_flags & NV_SS)
1059 	{
1060 	    start_selection();
1061 	    unshift_special(&ca);
1062 	    idx = find_command(ca.cmdchar);
1063 	}
1064 	else if ((nv_cmds[idx].cmd_flags & NV_SSS)
1065 					   && (mod_mask & MOD_MASK_SHIFT))
1066 	{
1067 	    start_selection();
1068 	    mod_mask &= ~MOD_MASK_SHIFT;
1069 	}
1070     }
1071 
1072     /*
1073      * Execute the command!
1074      * Call the command function found in the commands table.
1075      */
1076     ca.arg = nv_cmds[idx].cmd_arg;
1077     (nv_cmds[idx].cmd_func)(&ca);
1078 
1079     /*
1080      * If we didn't start or finish an operator, reset oap->regname, unless we
1081      * need it later.
1082      */
1083     if (!finish_op
1084 	    && !oap->op_type
1085 	    && (idx < 0 || !(nv_cmds[idx].cmd_flags & NV_KEEPREG)))
1086     {
1087 	clearop(oap);
1088 #ifdef FEAT_EVAL
1089 	reset_reg_var();
1090 #endif
1091     }
1092 
1093     // Get the length of mapped chars again after typing a count, second
1094     // character or "z333<cr>".
1095     if (old_mapped_len > 0)
1096 	old_mapped_len = typebuf_maplen();
1097 
1098     /*
1099      * If an operation is pending, handle it.  But not for K_IGNORE.
1100      */
1101     if (ca.cmdchar != K_IGNORE)
1102 	do_pending_operator(&ca, old_col, FALSE);
1103 
1104     /*
1105      * Wait for a moment when a message is displayed that will be overwritten
1106      * by the mode message.
1107      * In Visual mode and with "^O" in Insert mode, a short message will be
1108      * overwritten by the mode message.  Wait a bit, until a key is hit.
1109      * In Visual mode, it's more important to keep the Visual area updated
1110      * than keeping a message (e.g. from a /pat search).
1111      * Only do this if the command was typed, not from a mapping.
1112      * Don't wait when emsg_silent is non-zero.
1113      * Also wait a bit after an error message, e.g. for "^O:".
1114      * Don't redraw the screen, it would remove the message.
1115      */
1116     if (       ((p_smd
1117 		    && msg_silent == 0
1118 		    && (restart_edit != 0
1119 			|| (VIsual_active
1120 			    && old_pos.lnum == curwin->w_cursor.lnum
1121 			    && old_pos.col == curwin->w_cursor.col)
1122 		       )
1123 		    && (clear_cmdline
1124 			|| redraw_cmdline)
1125 		    && (msg_didout || (msg_didany && msg_scroll))
1126 		    && !msg_nowait
1127 		    && KeyTyped)
1128 		|| (restart_edit != 0
1129 		    && !VIsual_active
1130 		    && (msg_scroll
1131 			|| emsg_on_display)))
1132 	    && oap->regname == 0
1133 	    && !(ca.retval & CA_COMMAND_BUSY)
1134 	    && stuff_empty()
1135 	    && typebuf_typed()
1136 	    && emsg_silent == 0
1137 	    && !did_wait_return
1138 	    && oap->op_type == OP_NOP)
1139     {
1140 	int	save_State = State;
1141 
1142 	// Draw the cursor with the right shape here
1143 	if (restart_edit != 0)
1144 	    State = INSERT;
1145 
1146 	// If need to redraw, and there is a "keep_msg", redraw before the
1147 	// delay
1148 	if (must_redraw && keep_msg != NULL && !emsg_on_display)
1149 	{
1150 	    char_u	*kmsg;
1151 
1152 	    kmsg = keep_msg;
1153 	    keep_msg = NULL;
1154 	    // Showmode() will clear keep_msg, but we want to use it anyway.
1155 	    // First update w_topline.
1156 	    setcursor();
1157 	    update_screen(0);
1158 	    // now reset it, otherwise it's put in the history again
1159 	    keep_msg = kmsg;
1160 
1161 	    kmsg = vim_strsave(keep_msg);
1162 	    if (kmsg != NULL)
1163 	    {
1164 		msg_attr((char *)kmsg, keep_msg_attr);
1165 		vim_free(kmsg);
1166 	    }
1167 	}
1168 	setcursor();
1169 #ifdef CURSOR_SHAPE
1170 	ui_cursor_shape();		// may show different cursor shape
1171 #endif
1172 	cursor_on();
1173 	out_flush();
1174 	if (msg_scroll || emsg_on_display)
1175 	    ui_delay(1003L, TRUE);	// wait at least one second
1176 	ui_delay(3003L, FALSE);		// wait up to three seconds
1177 	State = save_State;
1178 
1179 	msg_scroll = FALSE;
1180 	emsg_on_display = FALSE;
1181     }
1182 
1183     /*
1184      * Finish up after executing a Normal mode command.
1185      */
1186 normal_end:
1187 
1188     msg_nowait = FALSE;
1189 
1190 #ifdef FEAT_EVAL
1191     if (finish_op)
1192 	reset_reg_var();
1193 #endif
1194 
1195     // Reset finish_op, in case it was set
1196 #ifdef CURSOR_SHAPE
1197     c = finish_op;
1198 #endif
1199     finish_op = FALSE;
1200 #ifdef CURSOR_SHAPE
1201     // Redraw the cursor with another shape, if we were in Operator-pending
1202     // mode or did a replace command.
1203     if (c || ca.cmdchar == 'r')
1204     {
1205 	ui_cursor_shape();		// may show different cursor shape
1206 # ifdef FEAT_MOUSESHAPE
1207 	update_mouseshape(-1);
1208 # endif
1209     }
1210 #endif
1211 
1212 #ifdef FEAT_CMDL_INFO
1213     if (oap->op_type == OP_NOP && oap->regname == 0
1214 	    && ca.cmdchar != K_CURSORHOLD)
1215 	clear_showcmd();
1216 #endif
1217 
1218     checkpcmark();		// check if we moved since setting pcmark
1219     vim_free(ca.searchbuf);
1220 
1221     if (has_mbyte)
1222 	mb_adjust_cursor();
1223 
1224     if (curwin->w_p_scb && toplevel)
1225     {
1226 	validate_cursor();	// may need to update w_leftcol
1227 	do_check_scrollbind(TRUE);
1228     }
1229 
1230     if (curwin->w_p_crb && toplevel)
1231     {
1232 	validate_cursor();	// may need to update w_leftcol
1233 	do_check_cursorbind();
1234     }
1235 
1236 #ifdef FEAT_TERMINAL
1237     // don't go to Insert mode if a terminal has a running job
1238     if (term_job_running(curbuf->b_term))
1239 	restart_edit = 0;
1240 #endif
1241 
1242     /*
1243      * May restart edit(), if we got here with CTRL-O in Insert mode (but not
1244      * if still inside a mapping that started in Visual mode).
1245      * May switch from Visual to Select mode after CTRL-O command.
1246      */
1247     if (       oap->op_type == OP_NOP
1248 	    && ((restart_edit != 0 && !VIsual_active && old_mapped_len == 0)
1249 		|| restart_VIsual_select == 1)
1250 	    && !(ca.retval & CA_COMMAND_BUSY)
1251 	    && stuff_empty()
1252 	    && oap->regname == 0)
1253     {
1254 	if (restart_VIsual_select == 1)
1255 	{
1256 	    VIsual_select = TRUE;
1257 	    showmode();
1258 	    restart_VIsual_select = 0;
1259 	}
1260 	if (restart_edit != 0 && !VIsual_active && old_mapped_len == 0)
1261 	    (void)edit(restart_edit, FALSE, 1L);
1262     }
1263 
1264     if (restart_VIsual_select == 2)
1265 	restart_VIsual_select = 1;
1266 
1267     // Save count before an operator for next time.
1268     opcount = ca.opcount;
1269 }
1270 
1271 #ifdef FEAT_EVAL
1272 /*
1273  * Set v:count and v:count1 according to "cap".
1274  * Set v:prevcount only when "set_prevcount" is TRUE.
1275  */
1276     static void
1277 set_vcount_ca(cmdarg_T *cap, int *set_prevcount)
1278 {
1279     long count = cap->count0;
1280 
1281     // multiply with cap->opcount the same way as above
1282     if (cap->opcount != 0)
1283 	count = cap->opcount * (count == 0 ? 1 : count);
1284     set_vcount(count, count == 0 ? 1 : count, *set_prevcount);
1285     *set_prevcount = FALSE;  // only set v:prevcount once
1286 }
1287 #endif
1288 
1289 /*
1290  * Check if highlighting for Visual mode is possible, give a warning message
1291  * if not.
1292  */
1293     void
1294 check_visual_highlight(void)
1295 {
1296     static int	    did_check = FALSE;
1297 
1298     if (full_screen)
1299     {
1300 	if (!did_check && HL_ATTR(HLF_V) == 0)
1301 	    msg(_("Warning: terminal cannot highlight"));
1302 	did_check = TRUE;
1303     }
1304 }
1305 
1306 /*
1307  * End Visual mode.
1308  * This function should ALWAYS be called to end Visual mode, except from
1309  * do_pending_operator().
1310  */
1311     void
1312 end_visual_mode(void)
1313 {
1314 #ifdef FEAT_CLIPBOARD
1315     /*
1316      * If we are using the clipboard, then remember what was selected in case
1317      * we need to paste it somewhere while we still own the selection.
1318      * Only do this when the clipboard is already owned.  Don't want to grab
1319      * the selection when hitting ESC.
1320      */
1321     if (clip_star.available && clip_star.owned)
1322 	clip_auto_select();
1323 #endif
1324 
1325     VIsual_active = FALSE;
1326     setmouse();
1327     mouse_dragging = 0;
1328 
1329     // Save the current VIsual area for '< and '> marks, and "gv"
1330     curbuf->b_visual.vi_mode = VIsual_mode;
1331     curbuf->b_visual.vi_start = VIsual;
1332     curbuf->b_visual.vi_end = curwin->w_cursor;
1333     curbuf->b_visual.vi_curswant = curwin->w_curswant;
1334 #ifdef FEAT_EVAL
1335     curbuf->b_visual_mode_eval = VIsual_mode;
1336 #endif
1337     if (!virtual_active())
1338 	curwin->w_cursor.coladd = 0;
1339     may_clear_cmdline();
1340 
1341     adjust_cursor_eol();
1342 }
1343 
1344 /*
1345  * Reset VIsual_active and VIsual_reselect.
1346  */
1347     void
1348 reset_VIsual_and_resel(void)
1349 {
1350     if (VIsual_active)
1351     {
1352 	end_visual_mode();
1353 	redraw_curbuf_later(INVERTED);	// delete the inversion later
1354     }
1355     VIsual_reselect = FALSE;
1356 }
1357 
1358 /*
1359  * Reset VIsual_active and VIsual_reselect if it's set.
1360  */
1361     void
1362 reset_VIsual(void)
1363 {
1364     if (VIsual_active)
1365     {
1366 	end_visual_mode();
1367 	redraw_curbuf_later(INVERTED);	// delete the inversion later
1368 	VIsual_reselect = FALSE;
1369     }
1370 }
1371 
1372     void
1373 restore_visual_mode(void)
1374 {
1375     if (VIsual_mode_orig != NUL)
1376     {
1377 	curbuf->b_visual.vi_mode = VIsual_mode_orig;
1378 	VIsual_mode_orig = NUL;
1379     }
1380 }
1381 
1382 /*
1383  * Check for a balloon-eval special item to include when searching for an
1384  * identifier.  When "dir" is BACKWARD "ptr[-1]" must be valid!
1385  * Returns TRUE if the character at "*ptr" should be included.
1386  * "dir" is FORWARD or BACKWARD, the direction of searching.
1387  * "*colp" is in/decremented if "ptr[-dir]" should also be included.
1388  * "bnp" points to a counter for square brackets.
1389  */
1390     static int
1391 find_is_eval_item(
1392     char_u	*ptr,
1393     int		*colp,
1394     int		*bnp,
1395     int		dir)
1396 {
1397     // Accept everything inside [].
1398     if ((*ptr == ']' && dir == BACKWARD) || (*ptr == '[' && dir == FORWARD))
1399 	++*bnp;
1400     if (*bnp > 0)
1401     {
1402 	if ((*ptr == '[' && dir == BACKWARD) || (*ptr == ']' && dir == FORWARD))
1403 	    --*bnp;
1404 	return TRUE;
1405     }
1406 
1407     // skip over "s.var"
1408     if (*ptr == '.')
1409 	return TRUE;
1410 
1411     // two-character item: s->var
1412     if (ptr[dir == BACKWARD ? 0 : 1] == '>'
1413 	    && ptr[dir == BACKWARD ? -1 : 0] == '-')
1414     {
1415 	*colp += dir;
1416 	return TRUE;
1417     }
1418     return FALSE;
1419 }
1420 
1421 /*
1422  * Find the identifier under or to the right of the cursor.
1423  * "find_type" can have one of three values:
1424  * FIND_IDENT:   find an identifier (keyword)
1425  * FIND_STRING:  find any non-white text
1426  * FIND_IDENT + FIND_STRING: find any non-white text, identifier preferred.
1427  * FIND_EVAL:	 find text useful for C program debugging
1428  *
1429  * There are three steps:
1430  * 1. Search forward for the start of an identifier/text.  Doesn't move if
1431  *    already on one.
1432  * 2. Search backward for the start of this identifier/text.
1433  *    This doesn't match the real Vi but I like it a little better and it
1434  *    shouldn't bother anyone.
1435  * 3. Search forward to the end of this identifier/text.
1436  *    When FIND_IDENT isn't defined, we backup until a blank.
1437  *
1438  * Returns the length of the text, or zero if no text is found.
1439  * If text is found, a pointer to the text is put in "*text".  This
1440  * points into the current buffer line and is not always NUL terminated.
1441  */
1442     int
1443 find_ident_under_cursor(char_u **text, int find_type)
1444 {
1445     return find_ident_at_pos(curwin, curwin->w_cursor.lnum,
1446 				curwin->w_cursor.col, text, NULL, find_type);
1447 }
1448 
1449 /*
1450  * Like find_ident_under_cursor(), but for any window and any position.
1451  * However: Uses 'iskeyword' from the current window!.
1452  */
1453     int
1454 find_ident_at_pos(
1455     win_T	*wp,
1456     linenr_T	lnum,
1457     colnr_T	startcol,
1458     char_u	**text,
1459     int		*textcol,	// column where "text" starts, can be NULL
1460     int		find_type)
1461 {
1462     char_u	*ptr;
1463     int		col = 0;	// init to shut up GCC
1464     int		i;
1465     int		this_class = 0;
1466     int		prev_class;
1467     int		prevcol;
1468     int		bn = 0;		// bracket nesting
1469 
1470     /*
1471      * if i == 0: try to find an identifier
1472      * if i == 1: try to find any non-white text
1473      */
1474     ptr = ml_get_buf(wp->w_buffer, lnum, FALSE);
1475     for (i = (find_type & FIND_IDENT) ? 0 : 1;	i < 2; ++i)
1476     {
1477 	/*
1478 	 * 1. skip to start of identifier/text
1479 	 */
1480 	col = startcol;
1481 	if (has_mbyte)
1482 	{
1483 	    while (ptr[col] != NUL)
1484 	    {
1485 		// Stop at a ']' to evaluate "a[x]".
1486 		if ((find_type & FIND_EVAL) && ptr[col] == ']')
1487 		    break;
1488 		this_class = mb_get_class(ptr + col);
1489 		if (this_class != 0 && (i == 1 || this_class != 1))
1490 		    break;
1491 		col += (*mb_ptr2len)(ptr + col);
1492 	    }
1493 	}
1494 	else
1495 	    while (ptr[col] != NUL
1496 		    && (i == 0 ? !vim_iswordc(ptr[col]) : VIM_ISWHITE(ptr[col]))
1497 		    && (!(find_type & FIND_EVAL) || ptr[col] != ']')
1498 		    )
1499 		++col;
1500 
1501 	// When starting on a ']' count it, so that we include the '['.
1502 	bn = ptr[col] == ']';
1503 
1504 	/*
1505 	 * 2. Back up to start of identifier/text.
1506 	 */
1507 	if (has_mbyte)
1508 	{
1509 	    // Remember class of character under cursor.
1510 	    if ((find_type & FIND_EVAL) && ptr[col] == ']')
1511 		this_class = mb_get_class((char_u *)"a");
1512 	    else
1513 		this_class = mb_get_class(ptr + col);
1514 	    while (col > 0 && this_class != 0)
1515 	    {
1516 		prevcol = col - 1 - (*mb_head_off)(ptr, ptr + col - 1);
1517 		prev_class = mb_get_class(ptr + prevcol);
1518 		if (this_class != prev_class
1519 			&& (i == 0
1520 			    || prev_class == 0
1521 			    || (find_type & FIND_IDENT))
1522 			&& (!(find_type & FIND_EVAL)
1523 			    || prevcol == 0
1524 			    || !find_is_eval_item(ptr + prevcol, &prevcol,
1525 							       &bn, BACKWARD))
1526 			)
1527 		    break;
1528 		col = prevcol;
1529 	    }
1530 
1531 	    // If we don't want just any old text, or we've found an
1532 	    // identifier, stop searching.
1533 	    if (this_class > 2)
1534 		this_class = 2;
1535 	    if (!(find_type & FIND_STRING) || this_class == 2)
1536 		break;
1537 	}
1538 	else
1539 	{
1540 	    while (col > 0
1541 		    && ((i == 0
1542 			    ? vim_iswordc(ptr[col - 1])
1543 			    : (!VIM_ISWHITE(ptr[col - 1])
1544 				&& (!(find_type & FIND_IDENT)
1545 				    || !vim_iswordc(ptr[col - 1]))))
1546 			|| ((find_type & FIND_EVAL)
1547 			    && col > 1
1548 			    && find_is_eval_item(ptr + col - 1, &col,
1549 							       &bn, BACKWARD))
1550 			))
1551 		--col;
1552 
1553 	    // If we don't want just any old text, or we've found an
1554 	    // identifier, stop searching.
1555 	    if (!(find_type & FIND_STRING) || vim_iswordc(ptr[col]))
1556 		break;
1557 	}
1558     }
1559 
1560     if (ptr[col] == NUL || (i == 0
1561 		&& (has_mbyte ? this_class != 2 : !vim_iswordc(ptr[col]))))
1562     {
1563 	// didn't find an identifier or text
1564 	if ((find_type & FIND_NOERROR) == 0)
1565 	{
1566 	    if (find_type & FIND_STRING)
1567 		emsg(_("E348: No string under cursor"));
1568 	    else
1569 		emsg(_(e_noident));
1570 	}
1571 	return 0;
1572     }
1573     ptr += col;
1574     *text = ptr;
1575     if (textcol != NULL)
1576 	*textcol = col;
1577 
1578     /*
1579      * 3. Find the end if the identifier/text.
1580      */
1581     bn = 0;
1582     startcol -= col;
1583     col = 0;
1584     if (has_mbyte)
1585     {
1586 	// Search for point of changing multibyte character class.
1587 	this_class = mb_get_class(ptr);
1588 	while (ptr[col] != NUL
1589 		&& ((i == 0 ? mb_get_class(ptr + col) == this_class
1590 			    : mb_get_class(ptr + col) != 0)
1591 		    || ((find_type & FIND_EVAL)
1592 			&& col <= (int)startcol
1593 			&& find_is_eval_item(ptr + col, &col, &bn, FORWARD))
1594 		))
1595 	    col += (*mb_ptr2len)(ptr + col);
1596     }
1597     else
1598 	while ((i == 0 ? vim_iswordc(ptr[col])
1599 		       : (ptr[col] != NUL && !VIM_ISWHITE(ptr[col])))
1600 		    || ((find_type & FIND_EVAL)
1601 			&& col <= (int)startcol
1602 			&& find_is_eval_item(ptr + col, &col, &bn, FORWARD))
1603 		)
1604 	    ++col;
1605 
1606     return col;
1607 }
1608 
1609 /*
1610  * Prepare for redo of a normal command.
1611  */
1612     static void
1613 prep_redo_cmd(cmdarg_T *cap)
1614 {
1615     prep_redo(cap->oap->regname, cap->count0,
1616 				     NUL, cap->cmdchar, NUL, NUL, cap->nchar);
1617 }
1618 
1619 /*
1620  * Prepare for redo of any command.
1621  * Note that only the last argument can be a multi-byte char.
1622  */
1623     void
1624 prep_redo(
1625     int	    regname,
1626     long    num,
1627     int	    cmd1,
1628     int	    cmd2,
1629     int	    cmd3,
1630     int	    cmd4,
1631     int	    cmd5)
1632 {
1633     ResetRedobuff();
1634     if (regname != 0)	// yank from specified buffer
1635     {
1636 	AppendCharToRedobuff('"');
1637 	AppendCharToRedobuff(regname);
1638     }
1639     if (num)
1640 	AppendNumberToRedobuff(num);
1641 
1642     if (cmd1 != NUL)
1643 	AppendCharToRedobuff(cmd1);
1644     if (cmd2 != NUL)
1645 	AppendCharToRedobuff(cmd2);
1646     if (cmd3 != NUL)
1647 	AppendCharToRedobuff(cmd3);
1648     if (cmd4 != NUL)
1649 	AppendCharToRedobuff(cmd4);
1650     if (cmd5 != NUL)
1651 	AppendCharToRedobuff(cmd5);
1652 }
1653 
1654 /*
1655  * check for operator active and clear it
1656  *
1657  * return TRUE if operator was active
1658  */
1659     static int
1660 checkclearop(oparg_T *oap)
1661 {
1662     if (oap->op_type == OP_NOP)
1663 	return FALSE;
1664     clearopbeep(oap);
1665     return TRUE;
1666 }
1667 
1668 /*
1669  * Check for operator or Visual active.  Clear active operator.
1670  *
1671  * Return TRUE if operator or Visual was active.
1672  */
1673     static int
1674 checkclearopq(oparg_T *oap)
1675 {
1676     if (oap->op_type == OP_NOP && !VIsual_active)
1677 	return FALSE;
1678     clearopbeep(oap);
1679     return TRUE;
1680 }
1681 
1682     void
1683 clearop(oparg_T *oap)
1684 {
1685     oap->op_type = OP_NOP;
1686     oap->regname = 0;
1687     oap->motion_force = NUL;
1688     oap->use_reg_one = FALSE;
1689 }
1690 
1691     void
1692 clearopbeep(oparg_T *oap)
1693 {
1694     clearop(oap);
1695     beep_flush();
1696 }
1697 
1698 /*
1699  * Remove the shift modifier from a special key.
1700  */
1701     static void
1702 unshift_special(cmdarg_T *cap)
1703 {
1704     switch (cap->cmdchar)
1705     {
1706 	case K_S_RIGHT:	cap->cmdchar = K_RIGHT; break;
1707 	case K_S_LEFT:	cap->cmdchar = K_LEFT; break;
1708 	case K_S_UP:	cap->cmdchar = K_UP; break;
1709 	case K_S_DOWN:	cap->cmdchar = K_DOWN; break;
1710 	case K_S_HOME:	cap->cmdchar = K_HOME; break;
1711 	case K_S_END:	cap->cmdchar = K_END; break;
1712     }
1713     cap->cmdchar = simplify_key(cap->cmdchar, &mod_mask);
1714 }
1715 
1716 /*
1717  * If the mode is currently displayed clear the command line or update the
1718  * command displayed.
1719  */
1720     void
1721 may_clear_cmdline(void)
1722 {
1723     if (mode_displayed)
1724 	clear_cmdline = TRUE;   // unshow visual mode later
1725 #ifdef FEAT_CMDL_INFO
1726     else
1727 	clear_showcmd();
1728 #endif
1729 }
1730 
1731 #if defined(FEAT_CMDL_INFO) || defined(PROTO)
1732 /*
1733  * Routines for displaying a partly typed command
1734  */
1735 
1736 #define SHOWCMD_BUFLEN SHOWCMD_COLS + 1 + 30
1737 static char_u	showcmd_buf[SHOWCMD_BUFLEN];
1738 static char_u	old_showcmd_buf[SHOWCMD_BUFLEN];  // For push_showcmd()
1739 static int	showcmd_is_clear = TRUE;
1740 static int	showcmd_visual = FALSE;
1741 
1742 static void display_showcmd(void);
1743 
1744     void
1745 clear_showcmd(void)
1746 {
1747     if (!p_sc)
1748 	return;
1749 
1750     if (VIsual_active && !char_avail())
1751     {
1752 	int		cursor_bot = LT_POS(VIsual, curwin->w_cursor);
1753 	long		lines;
1754 	colnr_T		leftcol, rightcol;
1755 	linenr_T	top, bot;
1756 
1757 	// Show the size of the Visual area.
1758 	if (cursor_bot)
1759 	{
1760 	    top = VIsual.lnum;
1761 	    bot = curwin->w_cursor.lnum;
1762 	}
1763 	else
1764 	{
1765 	    top = curwin->w_cursor.lnum;
1766 	    bot = VIsual.lnum;
1767 	}
1768 # ifdef FEAT_FOLDING
1769 	// Include closed folds as a whole.
1770 	(void)hasFolding(top, &top, NULL);
1771 	(void)hasFolding(bot, NULL, &bot);
1772 # endif
1773 	lines = bot - top + 1;
1774 
1775 	if (VIsual_mode == Ctrl_V)
1776 	{
1777 # ifdef FEAT_LINEBREAK
1778 	    char_u *saved_sbr = p_sbr;
1779 	    char_u *saved_w_sbr = curwin->w_p_sbr;
1780 
1781 	    // Make 'sbr' empty for a moment to get the correct size.
1782 	    p_sbr = empty_option;
1783 	    curwin->w_p_sbr = empty_option;
1784 # endif
1785 	    getvcols(curwin, &curwin->w_cursor, &VIsual, &leftcol, &rightcol);
1786 # ifdef FEAT_LINEBREAK
1787 	    p_sbr = saved_sbr;
1788 	    curwin->w_p_sbr = saved_w_sbr;
1789 # endif
1790 	    sprintf((char *)showcmd_buf, "%ldx%ld", lines,
1791 					      (long)(rightcol - leftcol + 1));
1792 	}
1793 	else if (VIsual_mode == 'V' || VIsual.lnum != curwin->w_cursor.lnum)
1794 	    sprintf((char *)showcmd_buf, "%ld", lines);
1795 	else
1796 	{
1797 	    char_u  *s, *e;
1798 	    int	    l;
1799 	    int	    bytes = 0;
1800 	    int	    chars = 0;
1801 
1802 	    if (cursor_bot)
1803 	    {
1804 		s = ml_get_pos(&VIsual);
1805 		e = ml_get_cursor();
1806 	    }
1807 	    else
1808 	    {
1809 		s = ml_get_cursor();
1810 		e = ml_get_pos(&VIsual);
1811 	    }
1812 	    while ((*p_sel != 'e') ? s <= e : s < e)
1813 	    {
1814 		l = (*mb_ptr2len)(s);
1815 		if (l == 0)
1816 		{
1817 		    ++bytes;
1818 		    ++chars;
1819 		    break;  // end of line
1820 		}
1821 		bytes += l;
1822 		++chars;
1823 		s += l;
1824 	    }
1825 	    if (bytes == chars)
1826 		sprintf((char *)showcmd_buf, "%d", chars);
1827 	    else
1828 		sprintf((char *)showcmd_buf, "%d-%d", chars, bytes);
1829 	}
1830 	showcmd_buf[SHOWCMD_COLS] = NUL;	// truncate
1831 	showcmd_visual = TRUE;
1832     }
1833     else
1834     {
1835 	showcmd_buf[0] = NUL;
1836 	showcmd_visual = FALSE;
1837 
1838 	// Don't actually display something if there is nothing to clear.
1839 	if (showcmd_is_clear)
1840 	    return;
1841     }
1842 
1843     display_showcmd();
1844 }
1845 
1846 /*
1847  * Add 'c' to string of shown command chars.
1848  * Return TRUE if output has been written (and setcursor() has been called).
1849  */
1850     int
1851 add_to_showcmd(int c)
1852 {
1853     char_u	*p;
1854     int		old_len;
1855     int		extra_len;
1856     int		overflow;
1857     int		i;
1858     static int	ignore[] =
1859     {
1860 #ifdef FEAT_GUI
1861 	K_VER_SCROLLBAR, K_HOR_SCROLLBAR,
1862 	K_LEFTMOUSE_NM, K_LEFTRELEASE_NM,
1863 #endif
1864 	K_IGNORE, K_PS,
1865 	K_LEFTMOUSE, K_LEFTDRAG, K_LEFTRELEASE, K_MOUSEMOVE,
1866 	K_MIDDLEMOUSE, K_MIDDLEDRAG, K_MIDDLERELEASE,
1867 	K_RIGHTMOUSE, K_RIGHTDRAG, K_RIGHTRELEASE,
1868 	K_MOUSEDOWN, K_MOUSEUP, K_MOUSELEFT, K_MOUSERIGHT,
1869 	K_X1MOUSE, K_X1DRAG, K_X1RELEASE, K_X2MOUSE, K_X2DRAG, K_X2RELEASE,
1870 	K_CURSORHOLD,
1871 	0
1872     };
1873 
1874     if (!p_sc || msg_silent != 0)
1875 	return FALSE;
1876 
1877     if (showcmd_visual)
1878     {
1879 	showcmd_buf[0] = NUL;
1880 	showcmd_visual = FALSE;
1881     }
1882 
1883     // Ignore keys that are scrollbar updates and mouse clicks
1884     if (IS_SPECIAL(c))
1885 	for (i = 0; ignore[i] != 0; ++i)
1886 	    if (ignore[i] == c)
1887 		return FALSE;
1888 
1889     p = transchar(c);
1890     if (*p == ' ')
1891 	STRCPY(p, "<20>");
1892     old_len = (int)STRLEN(showcmd_buf);
1893     extra_len = (int)STRLEN(p);
1894     overflow = old_len + extra_len - SHOWCMD_COLS;
1895     if (overflow > 0)
1896 	mch_memmove(showcmd_buf, showcmd_buf + overflow,
1897 						      old_len - overflow + 1);
1898     STRCAT(showcmd_buf, p);
1899 
1900     if (char_avail())
1901 	return FALSE;
1902 
1903     display_showcmd();
1904 
1905     return TRUE;
1906 }
1907 
1908     void
1909 add_to_showcmd_c(int c)
1910 {
1911     if (!add_to_showcmd(c))
1912 	setcursor();
1913 }
1914 
1915 /*
1916  * Delete 'len' characters from the end of the shown command.
1917  */
1918     static void
1919 del_from_showcmd(int len)
1920 {
1921     int	    old_len;
1922 
1923     if (!p_sc)
1924 	return;
1925 
1926     old_len = (int)STRLEN(showcmd_buf);
1927     if (len > old_len)
1928 	len = old_len;
1929     showcmd_buf[old_len - len] = NUL;
1930 
1931     if (!char_avail())
1932 	display_showcmd();
1933 }
1934 
1935 /*
1936  * push_showcmd() and pop_showcmd() are used when waiting for the user to type
1937  * something and there is a partial mapping.
1938  */
1939     void
1940 push_showcmd(void)
1941 {
1942     if (p_sc)
1943 	STRCPY(old_showcmd_buf, showcmd_buf);
1944 }
1945 
1946     void
1947 pop_showcmd(void)
1948 {
1949     if (!p_sc)
1950 	return;
1951 
1952     STRCPY(showcmd_buf, old_showcmd_buf);
1953 
1954     display_showcmd();
1955 }
1956 
1957     static void
1958 display_showcmd(void)
1959 {
1960     int	    len;
1961 
1962     cursor_off();
1963 
1964     len = (int)STRLEN(showcmd_buf);
1965     if (len == 0)
1966 	showcmd_is_clear = TRUE;
1967     else
1968     {
1969 	screen_puts(showcmd_buf, (int)Rows - 1, sc_col, 0);
1970 	showcmd_is_clear = FALSE;
1971     }
1972 
1973     /*
1974      * clear the rest of an old message by outputting up to SHOWCMD_COLS
1975      * spaces
1976      */
1977     screen_puts((char_u *)"          " + len, (int)Rows - 1, sc_col + len, 0);
1978 
1979     setcursor();	    // put cursor back where it belongs
1980 }
1981 #endif
1982 
1983 /*
1984  * When "check" is FALSE, prepare for commands that scroll the window.
1985  * When "check" is TRUE, take care of scroll-binding after the window has
1986  * scrolled.  Called from normal_cmd() and edit().
1987  */
1988     void
1989 do_check_scrollbind(int check)
1990 {
1991     static win_T	*old_curwin = NULL;
1992     static linenr_T	old_topline = 0;
1993 #ifdef FEAT_DIFF
1994     static int		old_topfill = 0;
1995 #endif
1996     static buf_T	*old_buf = NULL;
1997     static colnr_T	old_leftcol = 0;
1998 
1999     if (check && curwin->w_p_scb)
2000     {
2001 	// If a ":syncbind" command was just used, don't scroll, only reset
2002 	// the values.
2003 	if (did_syncbind)
2004 	    did_syncbind = FALSE;
2005 	else if (curwin == old_curwin)
2006 	{
2007 	    /*
2008 	     * Synchronize other windows, as necessary according to
2009 	     * 'scrollbind'.  Don't do this after an ":edit" command, except
2010 	     * when 'diff' is set.
2011 	     */
2012 	    if ((curwin->w_buffer == old_buf
2013 #ifdef FEAT_DIFF
2014 			|| curwin->w_p_diff
2015 #endif
2016 		)
2017 		&& (curwin->w_topline != old_topline
2018 #ifdef FEAT_DIFF
2019 			|| curwin->w_topfill != old_topfill
2020 #endif
2021 			|| curwin->w_leftcol != old_leftcol))
2022 	    {
2023 		check_scrollbind(curwin->w_topline - old_topline,
2024 			(long)(curwin->w_leftcol - old_leftcol));
2025 	    }
2026 	}
2027 	else if (vim_strchr(p_sbo, 'j')) // jump flag set in 'scrollopt'
2028 	{
2029 	    /*
2030 	     * When switching between windows, make sure that the relative
2031 	     * vertical offset is valid for the new window.  The relative
2032 	     * offset is invalid whenever another 'scrollbind' window has
2033 	     * scrolled to a point that would force the current window to
2034 	     * scroll past the beginning or end of its buffer.  When the
2035 	     * resync is performed, some of the other 'scrollbind' windows may
2036 	     * need to jump so that the current window's relative position is
2037 	     * visible on-screen.
2038 	     */
2039 	    check_scrollbind(curwin->w_topline - curwin->w_scbind_pos, 0L);
2040 	}
2041 	curwin->w_scbind_pos = curwin->w_topline;
2042     }
2043 
2044     old_curwin = curwin;
2045     old_topline = curwin->w_topline;
2046 #ifdef FEAT_DIFF
2047     old_topfill = curwin->w_topfill;
2048 #endif
2049     old_buf = curwin->w_buffer;
2050     old_leftcol = curwin->w_leftcol;
2051 }
2052 
2053 /*
2054  * Synchronize any windows that have "scrollbind" set, based on the
2055  * number of rows by which the current window has changed
2056  * (1998-11-02 16:21:01  R. Edward Ralston <[email protected]>)
2057  */
2058     void
2059 check_scrollbind(linenr_T topline_diff, long leftcol_diff)
2060 {
2061     int		want_ver;
2062     int		want_hor;
2063     win_T	*old_curwin = curwin;
2064     buf_T	*old_curbuf = curbuf;
2065     int		old_VIsual_select = VIsual_select;
2066     int		old_VIsual_active = VIsual_active;
2067     colnr_T	tgt_leftcol = curwin->w_leftcol;
2068     long	topline;
2069     long	y;
2070 
2071     /*
2072      * check 'scrollopt' string for vertical and horizontal scroll options
2073      */
2074     want_ver = (vim_strchr(p_sbo, 'v') && topline_diff != 0);
2075 #ifdef FEAT_DIFF
2076     want_ver |= old_curwin->w_p_diff;
2077 #endif
2078     want_hor = (vim_strchr(p_sbo, 'h') && (leftcol_diff || topline_diff != 0));
2079 
2080     /*
2081      * loop through the scrollbound windows and scroll accordingly
2082      */
2083     VIsual_select = VIsual_active = 0;
2084     FOR_ALL_WINDOWS(curwin)
2085     {
2086 	curbuf = curwin->w_buffer;
2087 	// skip original window  and windows with 'noscrollbind'
2088 	if (curwin != old_curwin && curwin->w_p_scb)
2089 	{
2090 	    /*
2091 	     * do the vertical scroll
2092 	     */
2093 	    if (want_ver)
2094 	    {
2095 #ifdef FEAT_DIFF
2096 		if (old_curwin->w_p_diff && curwin->w_p_diff)
2097 		{
2098 		    diff_set_topline(old_curwin, curwin);
2099 		}
2100 		else
2101 #endif
2102 		{
2103 		    curwin->w_scbind_pos += topline_diff;
2104 		    topline = curwin->w_scbind_pos;
2105 		    if (topline > curbuf->b_ml.ml_line_count)
2106 			topline = curbuf->b_ml.ml_line_count;
2107 		    if (topline < 1)
2108 			topline = 1;
2109 
2110 		    y = topline - curwin->w_topline;
2111 		    if (y > 0)
2112 			scrollup(y, FALSE);
2113 		    else
2114 			scrolldown(-y, FALSE);
2115 		}
2116 
2117 		redraw_later(VALID);
2118 		cursor_correct();
2119 		curwin->w_redr_status = TRUE;
2120 	    }
2121 
2122 	    /*
2123 	     * do the horizontal scroll
2124 	     */
2125 	    if (want_hor && curwin->w_leftcol != tgt_leftcol)
2126 	    {
2127 		curwin->w_leftcol = tgt_leftcol;
2128 		leftcol_changed();
2129 	    }
2130 	}
2131     }
2132 
2133     /*
2134      * reset current-window
2135      */
2136     VIsual_select = old_VIsual_select;
2137     VIsual_active = old_VIsual_active;
2138     curwin = old_curwin;
2139     curbuf = old_curbuf;
2140 }
2141 
2142 /*
2143  * Command character that's ignored.
2144  * Used for CTRL-Q and CTRL-S to avoid problems with terminals that use
2145  * xon/xoff.
2146  */
2147     static void
2148 nv_ignore(cmdarg_T *cap)
2149 {
2150     cap->retval |= CA_COMMAND_BUSY;	// don't call edit() now
2151 }
2152 
2153 /*
2154  * Command character that doesn't do anything, but unlike nv_ignore() does
2155  * start edit().  Used for "startinsert" executed while starting up.
2156  */
2157     static void
2158 nv_nop(cmdarg_T *cap UNUSED)
2159 {
2160 }
2161 
2162 /*
2163  * Command character doesn't exist.
2164  */
2165     static void
2166 nv_error(cmdarg_T *cap)
2167 {
2168     clearopbeep(cap->oap);
2169 }
2170 
2171 /*
2172  * <Help> and <F1> commands.
2173  */
2174     static void
2175 nv_help(cmdarg_T *cap)
2176 {
2177     if (!checkclearopq(cap->oap))
2178 	ex_help(NULL);
2179 }
2180 
2181 /*
2182  * CTRL-A and CTRL-X: Add or subtract from letter or number under cursor.
2183  */
2184     static void
2185 nv_addsub(cmdarg_T *cap)
2186 {
2187 #ifdef FEAT_JOB_CHANNEL
2188     if (bt_prompt(curbuf) && !prompt_curpos_editable())
2189 	clearopbeep(cap->oap);
2190     else
2191 #endif
2192     if (!VIsual_active && cap->oap->op_type == OP_NOP)
2193     {
2194 	prep_redo_cmd(cap);
2195 	cap->oap->op_type = cap->cmdchar == Ctrl_A ?  OP_NR_ADD : OP_NR_SUB;
2196 	op_addsub(cap->oap, cap->count1, cap->arg);
2197 	cap->oap->op_type = OP_NOP;
2198     }
2199     else if (VIsual_active)
2200 	nv_operator(cap);
2201     else
2202 	clearop(cap->oap);
2203 }
2204 
2205 /*
2206  * CTRL-F, CTRL-B, etc: Scroll page up or down.
2207  */
2208     static void
2209 nv_page(cmdarg_T *cap)
2210 {
2211     if (!checkclearop(cap->oap))
2212     {
2213 	if (mod_mask & MOD_MASK_CTRL)
2214 	{
2215 	    // <C-PageUp>: tab page back; <C-PageDown>: tab page forward
2216 	    if (cap->arg == BACKWARD)
2217 		goto_tabpage(-(int)cap->count1);
2218 	    else
2219 		goto_tabpage((int)cap->count0);
2220 	}
2221 	else
2222 	    (void)onepage(cap->arg, cap->count1);
2223     }
2224 }
2225 
2226 /*
2227  * Implementation of "gd" and "gD" command.
2228  */
2229     static void
2230 nv_gd(
2231     oparg_T	*oap,
2232     int		nchar,
2233     int		thisblock)	// 1 for "1gd" and "1gD"
2234 {
2235     int		len;
2236     char_u	*ptr;
2237 
2238     if ((len = find_ident_under_cursor(&ptr, FIND_IDENT)) == 0
2239 	    || find_decl(ptr, len, nchar == 'd', thisblock, SEARCH_START)
2240 								      == FAIL)
2241 	clearopbeep(oap);
2242 #ifdef FEAT_FOLDING
2243     else if ((fdo_flags & FDO_SEARCH) && KeyTyped && oap->op_type == OP_NOP)
2244 	foldOpenCursor();
2245 #endif
2246 }
2247 
2248 /*
2249  * Return TRUE if line[offset] is not inside a C-style comment or string, FALSE
2250  * otherwise.
2251  */
2252     static int
2253 is_ident(char_u *line, int offset)
2254 {
2255     int	i;
2256     int	incomment = FALSE;
2257     int	instring = 0;
2258     int	prev = 0;
2259 
2260     for (i = 0; i < offset && line[i] != NUL; i++)
2261     {
2262 	if (instring != 0)
2263 	{
2264 	    if (prev != '\\' && line[i] == instring)
2265 		instring = 0;
2266 	}
2267 	else if ((line[i] == '"' || line[i] == '\'') && !incomment)
2268 	{
2269 	    instring = line[i];
2270 	}
2271 	else
2272 	{
2273 	    if (incomment)
2274 	    {
2275 		if (prev == '*' && line[i] == '/')
2276 		    incomment = FALSE;
2277 	    }
2278 	    else if (prev == '/' && line[i] == '*')
2279 	    {
2280 		incomment = TRUE;
2281 	    }
2282 	    else if (prev == '/' && line[i] == '/')
2283 	    {
2284 		return FALSE;
2285 	    }
2286 	}
2287 
2288 	prev = line[i];
2289     }
2290 
2291     return incomment == FALSE && instring == 0;
2292 }
2293 
2294 /*
2295  * Search for variable declaration of "ptr[len]".
2296  * When "locally" is TRUE in the current function ("gd"), otherwise in the
2297  * current file ("gD").
2298  * When "thisblock" is TRUE check the {} block scope.
2299  * Return FAIL when not found.
2300  */
2301     int
2302 find_decl(
2303     char_u	*ptr,
2304     int		len,
2305     int		locally,
2306     int		thisblock,
2307     int		flags_arg)	// flags passed to searchit()
2308 {
2309     char_u	*pat;
2310     pos_T	old_pos;
2311     pos_T	par_pos;
2312     pos_T	found_pos;
2313     int		t;
2314     int		save_p_ws;
2315     int		save_p_scs;
2316     int		retval = OK;
2317     int		incll;
2318     int		searchflags = flags_arg;
2319     int		valid;
2320 
2321     if ((pat = alloc(len + 7)) == NULL)
2322 	return FAIL;
2323 
2324     // Put "\V" before the pattern to avoid that the special meaning of "."
2325     // and "~" causes trouble.
2326     sprintf((char *)pat, vim_iswordp(ptr) ? "\\V\\<%.*s\\>" : "\\V%.*s",
2327 								    len, ptr);
2328     old_pos = curwin->w_cursor;
2329     save_p_ws = p_ws;
2330     save_p_scs = p_scs;
2331     p_ws = FALSE;	// don't wrap around end of file now
2332     p_scs = FALSE;	// don't switch ignorecase off now
2333 
2334     /*
2335      * With "gD" go to line 1.
2336      * With "gd" Search back for the start of the current function, then go
2337      * back until a blank line.  If this fails go to line 1.
2338      */
2339     if (!locally || !findpar(&incll, BACKWARD, 1L, '{', FALSE))
2340     {
2341 	setpcmark();			// Set in findpar() otherwise
2342 	curwin->w_cursor.lnum = 1;
2343 	par_pos = curwin->w_cursor;
2344     }
2345     else
2346     {
2347 	par_pos = curwin->w_cursor;
2348 	while (curwin->w_cursor.lnum > 1 && *skipwhite(ml_get_curline()) != NUL)
2349 	    --curwin->w_cursor.lnum;
2350     }
2351     curwin->w_cursor.col = 0;
2352 
2353     // Search forward for the identifier, ignore comment lines.
2354     CLEAR_POS(&found_pos);
2355     for (;;)
2356     {
2357 	t = searchit(curwin, curbuf, &curwin->w_cursor, NULL, FORWARD,
2358 					  pat, 1L, searchflags, RE_LAST, NULL);
2359 	if (curwin->w_cursor.lnum >= old_pos.lnum)
2360 	    t = FAIL;	// match after start is failure too
2361 
2362 	if (thisblock && t != FAIL)
2363 	{
2364 	    pos_T	*pos;
2365 
2366 	    // Check that the block the match is in doesn't end before the
2367 	    // position where we started the search from.
2368 	    if ((pos = findmatchlimit(NULL, '}', FM_FORWARD,
2369 		     (int)(old_pos.lnum - curwin->w_cursor.lnum + 1))) != NULL
2370 		    && pos->lnum < old_pos.lnum)
2371 	    {
2372 		// There can't be a useful match before the end of this block.
2373 		// Skip to the end.
2374 		curwin->w_cursor = *pos;
2375 		continue;
2376 	    }
2377 	}
2378 
2379 	if (t == FAIL)
2380 	{
2381 	    // If we previously found a valid position, use it.
2382 	    if (found_pos.lnum != 0)
2383 	    {
2384 		curwin->w_cursor = found_pos;
2385 		t = OK;
2386 	    }
2387 	    break;
2388 	}
2389 	if (get_leader_len(ml_get_curline(), NULL, FALSE, TRUE) > 0)
2390 	{
2391 	    // Ignore this line, continue at start of next line.
2392 	    ++curwin->w_cursor.lnum;
2393 	    curwin->w_cursor.col = 0;
2394 	    continue;
2395 	}
2396 	valid = is_ident(ml_get_curline(), curwin->w_cursor.col);
2397 
2398 	// If the current position is not a valid identifier and a previous
2399 	// match is present, favor that one instead.
2400 	if (!valid && found_pos.lnum != 0)
2401 	{
2402 	    curwin->w_cursor = found_pos;
2403 	    break;
2404 	}
2405 
2406 	// Global search: use first valid match found
2407 	if (valid && !locally)
2408 	    break;
2409 	if (valid && curwin->w_cursor.lnum >= par_pos.lnum)
2410 	{
2411 	    // If we previously found a valid position, use it.
2412 	    if (found_pos.lnum != 0)
2413 		curwin->w_cursor = found_pos;
2414 	    break;
2415 	}
2416 
2417 	// For finding a local variable and the match is before the "{" or
2418 	// inside a comment, continue searching.  For K&R style function
2419 	// declarations this skips the function header without types.
2420 	if (!valid)
2421 	    CLEAR_POS(&found_pos);
2422 	else
2423 	    found_pos = curwin->w_cursor;
2424 	// Remove SEARCH_START from flags to avoid getting stuck at one
2425 	// position.
2426 	searchflags &= ~SEARCH_START;
2427     }
2428 
2429     if (t == FAIL)
2430     {
2431 	retval = FAIL;
2432 	curwin->w_cursor = old_pos;
2433     }
2434     else
2435     {
2436 	curwin->w_set_curswant = TRUE;
2437 	// "n" searches forward now
2438 	reset_search_dir();
2439     }
2440 
2441     vim_free(pat);
2442     p_ws = save_p_ws;
2443     p_scs = save_p_scs;
2444 
2445     return retval;
2446 }
2447 
2448 /*
2449  * Move 'dist' lines in direction 'dir', counting lines by *screen*
2450  * lines rather than lines in the file.
2451  * 'dist' must be positive.
2452  *
2453  * Return OK if able to move cursor, FAIL otherwise.
2454  */
2455     static int
2456 nv_screengo(oparg_T *oap, int dir, long dist)
2457 {
2458     int		linelen = linetabsize(ml_get_curline());
2459     int		retval = OK;
2460     int		atend = FALSE;
2461     int		n;
2462     int		col_off1;	// margin offset for first screen line
2463     int		col_off2;	// margin offset for wrapped screen line
2464     int		width1;		// text width for first screen line
2465     int		width2;		// test width for wrapped screen line
2466 
2467     oap->motion_type = MCHAR;
2468     oap->inclusive = (curwin->w_curswant == MAXCOL);
2469 
2470     col_off1 = curwin_col_off();
2471     col_off2 = col_off1 - curwin_col_off2();
2472     width1 = curwin->w_width - col_off1;
2473     width2 = curwin->w_width - col_off2;
2474     if (width2 == 0)
2475 	width2 = 1; // avoid divide by zero
2476 
2477     if (curwin->w_width != 0)
2478     {
2479       /*
2480        * Instead of sticking at the last character of the buffer line we
2481        * try to stick in the last column of the screen.
2482        */
2483       if (curwin->w_curswant == MAXCOL)
2484       {
2485 	atend = TRUE;
2486 	validate_virtcol();
2487 	if (width1 <= 0)
2488 	    curwin->w_curswant = 0;
2489 	else
2490 	{
2491 	    curwin->w_curswant = width1 - 1;
2492 	    if (curwin->w_virtcol > curwin->w_curswant)
2493 		curwin->w_curswant += ((curwin->w_virtcol
2494 			     - curwin->w_curswant - 1) / width2 + 1) * width2;
2495 	}
2496       }
2497       else
2498       {
2499 	if (linelen > width1)
2500 	    n = ((linelen - width1 - 1) / width2 + 1) * width2 + width1;
2501 	else
2502 	    n = width1;
2503 	if (curwin->w_curswant >= (colnr_T)n)
2504 	    curwin->w_curswant = n - 1;
2505       }
2506 
2507       while (dist--)
2508       {
2509 	if (dir == BACKWARD)
2510 	{
2511 	    if ((long)curwin->w_curswant >= width1)
2512 		// Move back within the line. This can give a negative value
2513 		// for w_curswant if width1 < width2 (with cpoptions+=n),
2514 		// which will get clipped to column 0.
2515 		curwin->w_curswant -= width2;
2516 	    else
2517 	    {
2518 		// to previous line
2519 		if (curwin->w_cursor.lnum == 1)
2520 		{
2521 		    retval = FAIL;
2522 		    break;
2523 		}
2524 		--curwin->w_cursor.lnum;
2525 #ifdef FEAT_FOLDING
2526 		// Move to the start of a closed fold.  Don't do that when
2527 		// 'foldopen' contains "all": it will open in a moment.
2528 		if (!(fdo_flags & FDO_ALL))
2529 		    (void)hasFolding(curwin->w_cursor.lnum,
2530 						&curwin->w_cursor.lnum, NULL);
2531 #endif
2532 		linelen = linetabsize(ml_get_curline());
2533 		if (linelen > width1)
2534 		    curwin->w_curswant += (((linelen - width1 - 1) / width2)
2535 								+ 1) * width2;
2536 	    }
2537 	}
2538 	else // dir == FORWARD
2539 	{
2540 	    if (linelen > width1)
2541 		n = ((linelen - width1 - 1) / width2 + 1) * width2 + width1;
2542 	    else
2543 		n = width1;
2544 	    if (curwin->w_curswant + width2 < (colnr_T)n)
2545 		// move forward within line
2546 		curwin->w_curswant += width2;
2547 	    else
2548 	    {
2549 		// to next line
2550 #ifdef FEAT_FOLDING
2551 		// Move to the end of a closed fold.
2552 		(void)hasFolding(curwin->w_cursor.lnum, NULL,
2553 						      &curwin->w_cursor.lnum);
2554 #endif
2555 		if (curwin->w_cursor.lnum == curbuf->b_ml.ml_line_count)
2556 		{
2557 		    retval = FAIL;
2558 		    break;
2559 		}
2560 		curwin->w_cursor.lnum++;
2561 		curwin->w_curswant %= width2;
2562 		// Check if the cursor has moved below the number display
2563 		// when width1 < width2 (with cpoptions+=n). Subtract width2
2564 		// to get a negative value for w_curswant, which will get
2565 		// clipped to column 0.
2566 		if (curwin->w_curswant >= width1)
2567 		    curwin->w_curswant -= width2;
2568 		linelen = linetabsize(ml_get_curline());
2569 	    }
2570 	}
2571       }
2572     }
2573 
2574     if (virtual_active() && atend)
2575 	coladvance(MAXCOL);
2576     else
2577 	coladvance(curwin->w_curswant);
2578 
2579     if (curwin->w_cursor.col > 0 && curwin->w_p_wrap)
2580     {
2581 	colnr_T virtcol;
2582 
2583 	/*
2584 	 * Check for landing on a character that got split at the end of the
2585 	 * last line.  We want to advance a screenline, not end up in the same
2586 	 * screenline or move two screenlines.
2587 	 */
2588 	validate_virtcol();
2589 	virtcol = curwin->w_virtcol;
2590 #if defined(FEAT_LINEBREAK)
2591 	if (virtcol > (colnr_T)width1 && *get_showbreak_value(curwin) != NUL)
2592 	    virtcol -= vim_strsize(get_showbreak_value(curwin));
2593 #endif
2594 
2595 	if (virtcol > curwin->w_curswant
2596 		&& (curwin->w_curswant < (colnr_T)width1
2597 		    ? (curwin->w_curswant > (colnr_T)width1 / 2)
2598 		    : ((curwin->w_curswant - width1) % width2
2599 						      > (colnr_T)width2 / 2)))
2600 	    --curwin->w_cursor.col;
2601     }
2602 
2603     if (atend)
2604 	curwin->w_curswant = MAXCOL;	    // stick in the last column
2605 
2606     return retval;
2607 }
2608 
2609 /*
2610  * Handle CTRL-E and CTRL-Y commands: scroll a line up or down.
2611  * cap->arg must be TRUE for CTRL-E.
2612  */
2613     void
2614 nv_scroll_line(cmdarg_T *cap)
2615 {
2616     if (!checkclearop(cap->oap))
2617 	scroll_redraw(cap->arg, cap->count1);
2618 }
2619 
2620 /*
2621  * Scroll "count" lines up or down, and redraw.
2622  */
2623     void
2624 scroll_redraw(int up, long count)
2625 {
2626     linenr_T	prev_topline = curwin->w_topline;
2627 #ifdef FEAT_DIFF
2628     int		prev_topfill = curwin->w_topfill;
2629 #endif
2630     linenr_T	prev_lnum = curwin->w_cursor.lnum;
2631 
2632     if (up)
2633 	scrollup(count, TRUE);
2634     else
2635 	scrolldown(count, TRUE);
2636     if (get_scrolloff_value())
2637     {
2638 	// Adjust the cursor position for 'scrolloff'.  Mark w_topline as
2639 	// valid, otherwise the screen jumps back at the end of the file.
2640 	cursor_correct();
2641 	check_cursor_moved(curwin);
2642 	curwin->w_valid |= VALID_TOPLINE;
2643 
2644 	// If moved back to where we were, at least move the cursor, otherwise
2645 	// we get stuck at one position.  Don't move the cursor up if the
2646 	// first line of the buffer is already on the screen
2647 	while (curwin->w_topline == prev_topline
2648 #ifdef FEAT_DIFF
2649 		&& curwin->w_topfill == prev_topfill
2650 #endif
2651 		)
2652 	{
2653 	    if (up)
2654 	    {
2655 		if (curwin->w_cursor.lnum > prev_lnum
2656 			|| cursor_down(1L, FALSE) == FAIL)
2657 		    break;
2658 	    }
2659 	    else
2660 	    {
2661 		if (curwin->w_cursor.lnum < prev_lnum
2662 			|| prev_topline == 1L
2663 			|| cursor_up(1L, FALSE) == FAIL)
2664 		    break;
2665 	    }
2666 	    // Mark w_topline as valid, otherwise the screen jumps back at the
2667 	    // end of the file.
2668 	    check_cursor_moved(curwin);
2669 	    curwin->w_valid |= VALID_TOPLINE;
2670 	}
2671     }
2672     if (curwin->w_cursor.lnum != prev_lnum)
2673 	coladvance(curwin->w_curswant);
2674     redraw_later(VALID);
2675 }
2676 
2677 /*
2678  * Commands that start with "z".
2679  */
2680     static void
2681 nv_zet(cmdarg_T *cap)
2682 {
2683     long	n;
2684     colnr_T	col;
2685     int		nchar = cap->nchar;
2686 #ifdef FEAT_FOLDING
2687     long	old_fdl = curwin->w_p_fdl;
2688     int		old_fen = curwin->w_p_fen;
2689 #endif
2690 #ifdef FEAT_SPELL
2691     int		undo = FALSE;
2692 #endif
2693     long        siso = get_sidescrolloff_value();
2694 
2695     if (VIM_ISDIGIT(nchar))
2696     {
2697 	/*
2698 	 * "z123{nchar}": edit the count before obtaining {nchar}
2699 	 */
2700 	if (checkclearop(cap->oap))
2701 	    return;
2702 	n = nchar - '0';
2703 	for (;;)
2704 	{
2705 #ifdef USE_ON_FLY_SCROLL
2706 	    dont_scroll = TRUE;		// disallow scrolling here
2707 #endif
2708 	    ++no_mapping;
2709 	    ++allow_keys;   // no mapping for nchar, but allow key codes
2710 	    nchar = plain_vgetc();
2711 	    LANGMAP_ADJUST(nchar, TRUE);
2712 	    --no_mapping;
2713 	    --allow_keys;
2714 #ifdef FEAT_CMDL_INFO
2715 	    (void)add_to_showcmd(nchar);
2716 #endif
2717 	    if (nchar == K_DEL || nchar == K_KDEL)
2718 		n /= 10;
2719 	    else if (VIM_ISDIGIT(nchar))
2720 		n = n * 10 + (nchar - '0');
2721 	    else if (nchar == CAR)
2722 	    {
2723 #ifdef FEAT_GUI
2724 		need_mouse_correct = TRUE;
2725 #endif
2726 		win_setheight((int)n);
2727 		break;
2728 	    }
2729 	    else if (nchar == 'l'
2730 		    || nchar == 'h'
2731 		    || nchar == K_LEFT
2732 		    || nchar == K_RIGHT)
2733 	    {
2734 		cap->count1 = n ? n * cap->count1 : cap->count1;
2735 		goto dozet;
2736 	    }
2737 	    else
2738 	    {
2739 		clearopbeep(cap->oap);
2740 		break;
2741 	    }
2742 	}
2743 	cap->oap->op_type = OP_NOP;
2744 	return;
2745     }
2746 
2747 dozet:
2748     if (
2749 #ifdef FEAT_FOLDING
2750 	    // "zf" and "zF" are always an operator, "zd", "zo", "zO", "zc"
2751 	    // and "zC" only in Visual mode.  "zj" and "zk" are motion
2752 	    // commands.
2753 	    cap->nchar != 'f' && cap->nchar != 'F'
2754 	    && !(VIsual_active && vim_strchr((char_u *)"dcCoO", cap->nchar))
2755 	    && cap->nchar != 'j' && cap->nchar != 'k'
2756 	    &&
2757 #endif
2758 	    checkclearop(cap->oap))
2759 	return;
2760 
2761     /*
2762      * For "z+", "z<CR>", "zt", "z.", "zz", "z^", "z-", "zb":
2763      * If line number given, set cursor.
2764      */
2765     if ((vim_strchr((char_u *)"+\r\nt.z^-b", nchar) != NULL)
2766 	    && cap->count0
2767 	    && cap->count0 != curwin->w_cursor.lnum)
2768     {
2769 	setpcmark();
2770 	if (cap->count0 > curbuf->b_ml.ml_line_count)
2771 	    curwin->w_cursor.lnum = curbuf->b_ml.ml_line_count;
2772 	else
2773 	    curwin->w_cursor.lnum = cap->count0;
2774 	check_cursor_col();
2775     }
2776 
2777     switch (nchar)
2778     {
2779 		// "z+", "z<CR>" and "zt": put cursor at top of screen
2780     case '+':
2781 		if (cap->count0 == 0)
2782 		{
2783 		    // No count given: put cursor at the line below screen
2784 		    validate_botline();	// make sure w_botline is valid
2785 		    if (curwin->w_botline > curbuf->b_ml.ml_line_count)
2786 			curwin->w_cursor.lnum = curbuf->b_ml.ml_line_count;
2787 		    else
2788 			curwin->w_cursor.lnum = curwin->w_botline;
2789 		}
2790 		// FALLTHROUGH
2791     case NL:
2792     case CAR:
2793     case K_KENTER:
2794 		beginline(BL_WHITE | BL_FIX);
2795 		// FALLTHROUGH
2796 
2797     case 't':	scroll_cursor_top(0, TRUE);
2798 		redraw_later(VALID);
2799 		set_fraction(curwin);
2800 		break;
2801 
2802 		// "z." and "zz": put cursor in middle of screen
2803     case '.':	beginline(BL_WHITE | BL_FIX);
2804 		// FALLTHROUGH
2805 
2806     case 'z':	scroll_cursor_halfway(TRUE);
2807 		redraw_later(VALID);
2808 		set_fraction(curwin);
2809 		break;
2810 
2811 		// "z^", "z-" and "zb": put cursor at bottom of screen
2812     case '^':	// Strange Vi behavior: <count>z^ finds line at top of window
2813 		// when <count> is at bottom of window, and puts that one at
2814 		// bottom of window.
2815 		if (cap->count0 != 0)
2816 		{
2817 		    scroll_cursor_bot(0, TRUE);
2818 		    curwin->w_cursor.lnum = curwin->w_topline;
2819 		}
2820 		else if (curwin->w_topline == 1)
2821 		    curwin->w_cursor.lnum = 1;
2822 		else
2823 		    curwin->w_cursor.lnum = curwin->w_topline - 1;
2824 		// FALLTHROUGH
2825     case '-':
2826 		beginline(BL_WHITE | BL_FIX);
2827 		// FALLTHROUGH
2828 
2829     case 'b':	scroll_cursor_bot(0, TRUE);
2830 		redraw_later(VALID);
2831 		set_fraction(curwin);
2832 		break;
2833 
2834 		// "zH" - scroll screen right half-page
2835     case 'H':
2836 		cap->count1 *= curwin->w_width / 2;
2837 		// FALLTHROUGH
2838 
2839 		// "zh" - scroll screen to the right
2840     case 'h':
2841     case K_LEFT:
2842 		if (!curwin->w_p_wrap)
2843 		{
2844 		    if ((colnr_T)cap->count1 > curwin->w_leftcol)
2845 			curwin->w_leftcol = 0;
2846 		    else
2847 			curwin->w_leftcol -= (colnr_T)cap->count1;
2848 		    leftcol_changed();
2849 		}
2850 		break;
2851 
2852 		// "zL" - scroll screen left half-page
2853     case 'L':	cap->count1 *= curwin->w_width / 2;
2854 		// FALLTHROUGH
2855 
2856 		// "zl" - scroll screen to the left
2857     case 'l':
2858     case K_RIGHT:
2859 		if (!curwin->w_p_wrap)
2860 		{
2861 		    // scroll the window left
2862 		    curwin->w_leftcol += (colnr_T)cap->count1;
2863 		    leftcol_changed();
2864 		}
2865 		break;
2866 
2867 		// "zs" - scroll screen, cursor at the start
2868     case 's':	if (!curwin->w_p_wrap)
2869 		{
2870 #ifdef FEAT_FOLDING
2871 		    if (hasFolding(curwin->w_cursor.lnum, NULL, NULL))
2872 			col = 0;	// like the cursor is in col 0
2873 		    else
2874 #endif
2875 		    getvcol(curwin, &curwin->w_cursor, &col, NULL, NULL);
2876 		    if ((long)col > siso)
2877 			col -= siso;
2878 		    else
2879 			col = 0;
2880 		    if (curwin->w_leftcol != col)
2881 		    {
2882 			curwin->w_leftcol = col;
2883 			redraw_later(NOT_VALID);
2884 		    }
2885 		}
2886 		break;
2887 
2888 		// "ze" - scroll screen, cursor at the end
2889     case 'e':	if (!curwin->w_p_wrap)
2890 		{
2891 #ifdef FEAT_FOLDING
2892 		    if (hasFolding(curwin->w_cursor.lnum, NULL, NULL))
2893 			col = 0;	// like the cursor is in col 0
2894 		    else
2895 #endif
2896 		    getvcol(curwin, &curwin->w_cursor, NULL, NULL, &col);
2897 		    n = curwin->w_width - curwin_col_off();
2898 		    if ((long)col + siso < n)
2899 			col = 0;
2900 		    else
2901 			col = col + siso - n + 1;
2902 		    if (curwin->w_leftcol != col)
2903 		    {
2904 			curwin->w_leftcol = col;
2905 			redraw_later(NOT_VALID);
2906 		    }
2907 		}
2908 		break;
2909 
2910 #ifdef FEAT_FOLDING
2911 		// "zF": create fold command
2912 		// "zf": create fold operator
2913     case 'F':
2914     case 'f':   if (foldManualAllowed(TRUE))
2915 		{
2916 		    cap->nchar = 'f';
2917 		    nv_operator(cap);
2918 		    curwin->w_p_fen = TRUE;
2919 
2920 		    // "zF" is like "zfzf"
2921 		    if (nchar == 'F' && cap->oap->op_type == OP_FOLD)
2922 		    {
2923 			nv_operator(cap);
2924 			finish_op = TRUE;
2925 		    }
2926 		}
2927 		else
2928 		    clearopbeep(cap->oap);
2929 		break;
2930 
2931 		// "zd": delete fold at cursor
2932 		// "zD": delete fold at cursor recursively
2933     case 'd':
2934     case 'D':	if (foldManualAllowed(FALSE))
2935 		{
2936 		    if (VIsual_active)
2937 			nv_operator(cap);
2938 		    else
2939 			deleteFold(curwin->w_cursor.lnum,
2940 				  curwin->w_cursor.lnum, nchar == 'D', FALSE);
2941 		}
2942 		break;
2943 
2944 		// "zE": erase all folds
2945     case 'E':	if (foldmethodIsManual(curwin))
2946 		{
2947 		    clearFolding(curwin);
2948 		    changed_window_setting();
2949 		}
2950 		else if (foldmethodIsMarker(curwin))
2951 		    deleteFold((linenr_T)1, curbuf->b_ml.ml_line_count,
2952 								 TRUE, FALSE);
2953 		else
2954 		    emsg(_("E352: Cannot erase folds with current 'foldmethod'"));
2955 		break;
2956 
2957 		// "zn": fold none: reset 'foldenable'
2958     case 'n':	curwin->w_p_fen = FALSE;
2959 		break;
2960 
2961 		// "zN": fold Normal: set 'foldenable'
2962     case 'N':	curwin->w_p_fen = TRUE;
2963 		break;
2964 
2965 		// "zi": invert folding: toggle 'foldenable'
2966     case 'i':	curwin->w_p_fen = !curwin->w_p_fen;
2967 		break;
2968 
2969 		// "za": open closed fold or close open fold at cursor
2970     case 'a':	if (hasFolding(curwin->w_cursor.lnum, NULL, NULL))
2971 		    openFold(curwin->w_cursor.lnum, cap->count1);
2972 		else
2973 		{
2974 		    closeFold(curwin->w_cursor.lnum, cap->count1);
2975 		    curwin->w_p_fen = TRUE;
2976 		}
2977 		break;
2978 
2979 		// "zA": open fold at cursor recursively
2980     case 'A':	if (hasFolding(curwin->w_cursor.lnum, NULL, NULL))
2981 		    openFoldRecurse(curwin->w_cursor.lnum);
2982 		else
2983 		{
2984 		    closeFoldRecurse(curwin->w_cursor.lnum);
2985 		    curwin->w_p_fen = TRUE;
2986 		}
2987 		break;
2988 
2989 		// "zo": open fold at cursor or Visual area
2990     case 'o':	if (VIsual_active)
2991 		    nv_operator(cap);
2992 		else
2993 		    openFold(curwin->w_cursor.lnum, cap->count1);
2994 		break;
2995 
2996 		// "zO": open fold recursively
2997     case 'O':	if (VIsual_active)
2998 		    nv_operator(cap);
2999 		else
3000 		    openFoldRecurse(curwin->w_cursor.lnum);
3001 		break;
3002 
3003 		// "zc": close fold at cursor or Visual area
3004     case 'c':	if (VIsual_active)
3005 		    nv_operator(cap);
3006 		else
3007 		    closeFold(curwin->w_cursor.lnum, cap->count1);
3008 		curwin->w_p_fen = TRUE;
3009 		break;
3010 
3011 		// "zC": close fold recursively
3012     case 'C':	if (VIsual_active)
3013 		    nv_operator(cap);
3014 		else
3015 		    closeFoldRecurse(curwin->w_cursor.lnum);
3016 		curwin->w_p_fen = TRUE;
3017 		break;
3018 
3019 		// "zv": open folds at the cursor
3020     case 'v':	foldOpenCursor();
3021 		break;
3022 
3023 		// "zx": re-apply 'foldlevel' and open folds at the cursor
3024     case 'x':	curwin->w_p_fen = TRUE;
3025 		curwin->w_foldinvalid = TRUE;	// recompute folds
3026 		newFoldLevel();			// update right now
3027 		foldOpenCursor();
3028 		break;
3029 
3030 		// "zX": undo manual opens/closes, re-apply 'foldlevel'
3031     case 'X':	curwin->w_p_fen = TRUE;
3032 		curwin->w_foldinvalid = TRUE;	// recompute folds
3033 		old_fdl = -1;			// force an update
3034 		break;
3035 
3036 		// "zm": fold more
3037     case 'm':	if (curwin->w_p_fdl > 0)
3038 		{
3039 		    curwin->w_p_fdl -= cap->count1;
3040 		    if (curwin->w_p_fdl < 0)
3041 			curwin->w_p_fdl = 0;
3042 		}
3043 		old_fdl = -1;		// force an update
3044 		curwin->w_p_fen = TRUE;
3045 		break;
3046 
3047 		// "zM": close all folds
3048     case 'M':	curwin->w_p_fdl = 0;
3049 		old_fdl = -1;		// force an update
3050 		curwin->w_p_fen = TRUE;
3051 		break;
3052 
3053 		// "zr": reduce folding
3054     case 'r':	curwin->w_p_fdl += cap->count1;
3055 		{
3056 		    int d = getDeepestNesting();
3057 
3058 		    if (curwin->w_p_fdl >= d)
3059 			curwin->w_p_fdl = d;
3060 		}
3061 		break;
3062 
3063 		// "zR": open all folds
3064     case 'R':	curwin->w_p_fdl = getDeepestNesting();
3065 		old_fdl = -1;		// force an update
3066 		break;
3067 
3068     case 'j':	// "zj" move to next fold downwards
3069     case 'k':	// "zk" move to next fold upwards
3070 		if (foldMoveTo(TRUE, nchar == 'j' ? FORWARD : BACKWARD,
3071 							  cap->count1) == FAIL)
3072 		    clearopbeep(cap->oap);
3073 		break;
3074 
3075 #endif // FEAT_FOLDING
3076 
3077 #ifdef FEAT_SPELL
3078     case 'u':	// "zug" and "zuw": undo "zg" and "zw"
3079 		++no_mapping;
3080 		++allow_keys;   // no mapping for nchar, but allow key codes
3081 		nchar = plain_vgetc();
3082 		LANGMAP_ADJUST(nchar, TRUE);
3083 		--no_mapping;
3084 		--allow_keys;
3085 #ifdef FEAT_CMDL_INFO
3086 		(void)add_to_showcmd(nchar);
3087 #endif
3088 		if (vim_strchr((char_u *)"gGwW", nchar) == NULL)
3089 		{
3090 		    clearopbeep(cap->oap);
3091 		    break;
3092 		}
3093 		undo = TRUE;
3094 		// FALLTHROUGH
3095 
3096     case 'g':	// "zg": add good word to word list
3097     case 'w':	// "zw": add wrong word to word list
3098     case 'G':	// "zG": add good word to temp word list
3099     case 'W':	// "zW": add wrong word to temp word list
3100 		{
3101 		    char_u  *ptr = NULL;
3102 		    int	    len;
3103 
3104 		    if (checkclearop(cap->oap))
3105 			break;
3106 		    if (VIsual_active && get_visual_text(cap, &ptr, &len)
3107 								      == FAIL)
3108 			return;
3109 		    if (ptr == NULL)
3110 		    {
3111 			pos_T	pos = curwin->w_cursor;
3112 
3113 			// Find bad word under the cursor.  When 'spell' is
3114 			// off this fails and find_ident_under_cursor() is
3115 			// used below.
3116 			emsg_off++;
3117 			len = spell_move_to(curwin, FORWARD, TRUE, TRUE, NULL);
3118 			emsg_off--;
3119 			if (len != 0 && curwin->w_cursor.col <= pos.col)
3120 			    ptr = ml_get_pos(&curwin->w_cursor);
3121 			curwin->w_cursor = pos;
3122 		    }
3123 
3124 		    if (ptr == NULL && (len = find_ident_under_cursor(&ptr,
3125 							    FIND_IDENT)) == 0)
3126 			return;
3127 		    spell_add_word(ptr, len, nchar == 'w' || nchar == 'W'
3128 					      ? SPELL_ADD_BAD : SPELL_ADD_GOOD,
3129 					    (nchar == 'G' || nchar == 'W')
3130 						       ? 0 : (int)cap->count1,
3131 					    undo);
3132 		}
3133 		break;
3134 
3135     case '=':	// "z=": suggestions for a badly spelled word
3136 		if (!checkclearop(cap->oap))
3137 		    spell_suggest((int)cap->count0);
3138 		break;
3139 #endif
3140 
3141     default:	clearopbeep(cap->oap);
3142     }
3143 
3144 #ifdef FEAT_FOLDING
3145     // Redraw when 'foldenable' changed
3146     if (old_fen != curwin->w_p_fen)
3147     {
3148 # ifdef FEAT_DIFF
3149 	win_T	    *wp;
3150 
3151 	if (foldmethodIsDiff(curwin) && curwin->w_p_scb)
3152 	{
3153 	    // Adjust 'foldenable' in diff-synced windows.
3154 	    FOR_ALL_WINDOWS(wp)
3155 	    {
3156 		if (wp != curwin && foldmethodIsDiff(wp) && wp->w_p_scb)
3157 		{
3158 		    wp->w_p_fen = curwin->w_p_fen;
3159 		    changed_window_setting_win(wp);
3160 		}
3161 	    }
3162 	}
3163 # endif
3164 	changed_window_setting();
3165     }
3166 
3167     // Redraw when 'foldlevel' changed.
3168     if (old_fdl != curwin->w_p_fdl)
3169 	newFoldLevel();
3170 #endif
3171 }
3172 
3173 #ifdef FEAT_GUI
3174 /*
3175  * Vertical scrollbar movement.
3176  */
3177     static void
3178 nv_ver_scrollbar(cmdarg_T *cap)
3179 {
3180     if (cap->oap->op_type != OP_NOP)
3181 	clearopbeep(cap->oap);
3182 
3183     // Even if an operator was pending, we still want to scroll
3184     gui_do_scroll();
3185 }
3186 
3187 /*
3188  * Horizontal scrollbar movement.
3189  */
3190     static void
3191 nv_hor_scrollbar(cmdarg_T *cap)
3192 {
3193     if (cap->oap->op_type != OP_NOP)
3194 	clearopbeep(cap->oap);
3195 
3196     // Even if an operator was pending, we still want to scroll
3197     gui_do_horiz_scroll(scrollbar_value, FALSE);
3198 }
3199 #endif
3200 
3201 #if defined(FEAT_GUI_TABLINE) || defined(PROTO)
3202 /*
3203  * Click in GUI tab.
3204  */
3205     static void
3206 nv_tabline(cmdarg_T *cap)
3207 {
3208     if (cap->oap->op_type != OP_NOP)
3209 	clearopbeep(cap->oap);
3210 
3211     // Even if an operator was pending, we still want to jump tabs.
3212     goto_tabpage(current_tab);
3213 }
3214 
3215 /*
3216  * Selected item in tab line menu.
3217  */
3218     static void
3219 nv_tabmenu(cmdarg_T *cap)
3220 {
3221     if (cap->oap->op_type != OP_NOP)
3222 	clearopbeep(cap->oap);
3223 
3224     // Even if an operator was pending, we still want to jump tabs.
3225     handle_tabmenu();
3226 }
3227 
3228 /*
3229  * Handle selecting an item of the GUI tab line menu.
3230  * Used in Normal and Insert mode.
3231  */
3232     void
3233 handle_tabmenu(void)
3234 {
3235     switch (current_tabmenu)
3236     {
3237 	case TABLINE_MENU_CLOSE:
3238 	    if (current_tab == 0)
3239 		do_cmdline_cmd((char_u *)"tabclose");
3240 	    else
3241 	    {
3242 		vim_snprintf((char *)IObuff, IOSIZE, "tabclose %d",
3243 								 current_tab);
3244 		do_cmdline_cmd(IObuff);
3245 	    }
3246 	    break;
3247 
3248 	case TABLINE_MENU_NEW:
3249 	    if (current_tab == 0)
3250 		do_cmdline_cmd((char_u *)"$tabnew");
3251 	    else
3252 	    {
3253 		vim_snprintf((char *)IObuff, IOSIZE, "%dtabnew",
3254 							     current_tab - 1);
3255 		do_cmdline_cmd(IObuff);
3256 	    }
3257 	    break;
3258 
3259 	case TABLINE_MENU_OPEN:
3260 	    if (current_tab == 0)
3261 		do_cmdline_cmd((char_u *)"browse $tabnew");
3262 	    else
3263 	    {
3264 		vim_snprintf((char *)IObuff, IOSIZE, "browse %dtabnew",
3265 							     current_tab - 1);
3266 		do_cmdline_cmd(IObuff);
3267 	    }
3268 	    break;
3269     }
3270 }
3271 #endif
3272 
3273 /*
3274  * "Q" command.
3275  */
3276     static void
3277 nv_exmode(cmdarg_T *cap)
3278 {
3279     /*
3280      * Ignore 'Q' in Visual mode, just give a beep.
3281      */
3282     if (VIsual_active)
3283 	vim_beep(BO_EX);
3284     else if (!checkclearop(cap->oap))
3285 	do_exmode(FALSE);
3286 }
3287 
3288 /*
3289  * Handle a ":" command.
3290  */
3291     static void
3292 nv_colon(cmdarg_T *cap)
3293 {
3294     int	    old_p_im;
3295     int	    cmd_result;
3296 
3297     if (VIsual_active)
3298 	nv_operator(cap);
3299     else
3300     {
3301 	if (cap->oap->op_type != OP_NOP)
3302 	{
3303 	    // Using ":" as a movement is characterwise exclusive.
3304 	    cap->oap->motion_type = MCHAR;
3305 	    cap->oap->inclusive = FALSE;
3306 	}
3307 	else if (cap->count0)
3308 	{
3309 	    // translate "count:" into ":.,.+(count - 1)"
3310 	    stuffcharReadbuff('.');
3311 	    if (cap->count0 > 1)
3312 	    {
3313 		stuffReadbuff((char_u *)",.+");
3314 		stuffnumReadbuff((long)cap->count0 - 1L);
3315 	    }
3316 	}
3317 
3318 	// When typing, don't type below an old message
3319 	if (KeyTyped)
3320 	    compute_cmdrow();
3321 
3322 	old_p_im = p_im;
3323 
3324 	// get a command line and execute it
3325 	cmd_result = do_cmdline(NULL, getexline, NULL,
3326 			    cap->oap->op_type != OP_NOP ? DOCMD_KEEPLINE : 0);
3327 
3328 	// If 'insertmode' changed, enter or exit Insert mode
3329 	if (p_im != old_p_im)
3330 	{
3331 	    if (p_im)
3332 		restart_edit = 'i';
3333 	    else
3334 		restart_edit = 0;
3335 	}
3336 
3337 	if (cmd_result == FAIL)
3338 	    // The Ex command failed, do not execute the operator.
3339 	    clearop(cap->oap);
3340 	else if (cap->oap->op_type != OP_NOP
3341 		&& (cap->oap->start.lnum > curbuf->b_ml.ml_line_count
3342 		    || cap->oap->start.col >
3343 			       (colnr_T)STRLEN(ml_get(cap->oap->start.lnum))
3344 		    || did_emsg
3345 		    ))
3346 	    // The start of the operator has become invalid by the Ex command.
3347 	    clearopbeep(cap->oap);
3348     }
3349 }
3350 
3351 /*
3352  * Handle CTRL-G command.
3353  */
3354     static void
3355 nv_ctrlg(cmdarg_T *cap)
3356 {
3357     if (VIsual_active)	// toggle Selection/Visual mode
3358     {
3359 	VIsual_select = !VIsual_select;
3360 	showmode();
3361     }
3362     else if (!checkclearop(cap->oap))
3363 	// print full name if count given or :cd used
3364 	fileinfo((int)cap->count0, FALSE, TRUE);
3365 }
3366 
3367 /*
3368  * Handle CTRL-H <Backspace> command.
3369  */
3370     static void
3371 nv_ctrlh(cmdarg_T *cap)
3372 {
3373     if (VIsual_active && VIsual_select)
3374     {
3375 	cap->cmdchar = 'x';	// BS key behaves like 'x' in Select mode
3376 	v_visop(cap);
3377     }
3378     else
3379 	nv_left(cap);
3380 }
3381 
3382 /*
3383  * CTRL-L: clear screen and redraw.
3384  */
3385     static void
3386 nv_clear(cmdarg_T *cap)
3387 {
3388     if (!checkclearop(cap->oap))
3389     {
3390 #ifdef FEAT_SYN_HL
3391 	// Clear all syntax states to force resyncing.
3392 	syn_stack_free_all(curwin->w_s);
3393 # ifdef FEAT_RELTIME
3394 	{
3395 	    win_T *wp;
3396 
3397 	    FOR_ALL_WINDOWS(wp)
3398 		wp->w_s->b_syn_slow = FALSE;
3399 	}
3400 # endif
3401 #endif
3402 	redraw_later(CLEAR);
3403 #if defined(MSWIN) && (!defined(FEAT_GUI_MSWIN) || defined(VIMDLL))
3404 # ifdef VIMDLL
3405 	if (!gui.in_use)
3406 # endif
3407 	    resize_console_buf();
3408 #endif
3409     }
3410 }
3411 
3412 /*
3413  * CTRL-O: In Select mode: switch to Visual mode for one command.
3414  * Otherwise: Go to older pcmark.
3415  */
3416     static void
3417 nv_ctrlo(cmdarg_T *cap)
3418 {
3419     if (VIsual_active && VIsual_select)
3420     {
3421 	VIsual_select = FALSE;
3422 	showmode();
3423 	restart_VIsual_select = 2;	// restart Select mode later
3424     }
3425     else
3426     {
3427 	cap->count1 = -cap->count1;
3428 	nv_pcmark(cap);
3429     }
3430 }
3431 
3432 /*
3433  * CTRL-^ command, short for ":e #".  Works even when the alternate buffer is
3434  * not named.
3435  */
3436     static void
3437 nv_hat(cmdarg_T *cap)
3438 {
3439     if (!checkclearopq(cap->oap))
3440 	(void)buflist_getfile((int)cap->count0, (linenr_T)0,
3441 						GETF_SETMARK|GETF_ALT, FALSE);
3442 }
3443 
3444 /*
3445  * "Z" commands.
3446  */
3447     static void
3448 nv_Zet(cmdarg_T *cap)
3449 {
3450     if (!checkclearopq(cap->oap))
3451     {
3452 	switch (cap->nchar)
3453 	{
3454 			// "ZZ": equivalent to ":x".
3455 	    case 'Z':	do_cmdline_cmd((char_u *)"x");
3456 			break;
3457 
3458 			// "ZQ": equivalent to ":q!" (Elvis compatible).
3459 	    case 'Q':	do_cmdline_cmd((char_u *)"q!");
3460 			break;
3461 
3462 	    default:	clearopbeep(cap->oap);
3463 	}
3464     }
3465 }
3466 
3467 /*
3468  * Call nv_ident() as if "c1" was used, with "c2" as next character.
3469  */
3470     void
3471 do_nv_ident(int c1, int c2)
3472 {
3473     oparg_T	oa;
3474     cmdarg_T	ca;
3475 
3476     clear_oparg(&oa);
3477     CLEAR_FIELD(ca);
3478     ca.oap = &oa;
3479     ca.cmdchar = c1;
3480     ca.nchar = c2;
3481     nv_ident(&ca);
3482 }
3483 
3484 /*
3485  * Handle the commands that use the word under the cursor.
3486  * [g] CTRL-]	:ta to current identifier
3487  * [g] 'K'	run program for current identifier
3488  * [g] '*'	/ to current identifier or string
3489  * [g] '#'	? to current identifier or string
3490  *  g  ']'	:tselect for current identifier
3491  */
3492     static void
3493 nv_ident(cmdarg_T *cap)
3494 {
3495     char_u	*ptr = NULL;
3496     char_u	*buf;
3497     unsigned	buflen;
3498     char_u	*newbuf;
3499     char_u	*p;
3500     char_u	*kp;		// value of 'keywordprg'
3501     int		kp_help;	// 'keywordprg' is ":he"
3502     int		kp_ex;		// 'keywordprg' starts with ":"
3503     int		n = 0;		// init for GCC
3504     int		cmdchar;
3505     int		g_cmd;		// "g" command
3506     int		tag_cmd = FALSE;
3507     char_u	*aux_ptr;
3508     int		isman;
3509     int		isman_s;
3510 
3511     if (cap->cmdchar == 'g')	// "g*", "g#", "g]" and "gCTRL-]"
3512     {
3513 	cmdchar = cap->nchar;
3514 	g_cmd = TRUE;
3515     }
3516     else
3517     {
3518 	cmdchar = cap->cmdchar;
3519 	g_cmd = FALSE;
3520     }
3521 
3522     if (cmdchar == POUND)	// the pound sign, '#' for English keyboards
3523 	cmdchar = '#';
3524 
3525     /*
3526      * The "]", "CTRL-]" and "K" commands accept an argument in Visual mode.
3527      */
3528     if (cmdchar == ']' || cmdchar == Ctrl_RSB || cmdchar == 'K')
3529     {
3530 	if (VIsual_active && get_visual_text(cap, &ptr, &n) == FAIL)
3531 	    return;
3532 	if (checkclearopq(cap->oap))
3533 	    return;
3534     }
3535 
3536     if (ptr == NULL && (n = find_ident_under_cursor(&ptr,
3537 		    (cmdchar == '*' || cmdchar == '#')
3538 				 ? FIND_IDENT|FIND_STRING : FIND_IDENT)) == 0)
3539     {
3540 	clearop(cap->oap);
3541 	return;
3542     }
3543 
3544     // Allocate buffer to put the command in.  Inserting backslashes can
3545     // double the length of the word.  p_kp / curbuf->b_p_kp could be added
3546     // and some numbers.
3547     kp = (*curbuf->b_p_kp == NUL ? p_kp : curbuf->b_p_kp);
3548     kp_help = (*kp == NUL || STRCMP(kp, ":he") == 0
3549 						 || STRCMP(kp, ":help") == 0);
3550     if (kp_help && *skipwhite(ptr) == NUL)
3551     {
3552 	emsg(_(e_noident));	 // found white space only
3553 	return;
3554     }
3555     kp_ex = (*kp == ':');
3556     buflen = (unsigned)(n * 2 + 30 + STRLEN(kp));
3557     buf = alloc(buflen);
3558     if (buf == NULL)
3559 	return;
3560     buf[0] = NUL;
3561 
3562     switch (cmdchar)
3563     {
3564 	case '*':
3565 	case '#':
3566 	    /*
3567 	     * Put cursor at start of word, makes search skip the word
3568 	     * under the cursor.
3569 	     * Call setpcmark() first, so "*``" puts the cursor back where
3570 	     * it was.
3571 	     */
3572 	    setpcmark();
3573 	    curwin->w_cursor.col = (colnr_T) (ptr - ml_get_curline());
3574 
3575 	    if (!g_cmd && vim_iswordp(ptr))
3576 		STRCPY(buf, "\\<");
3577 	    no_smartcase = TRUE;	// don't use 'smartcase' now
3578 	    break;
3579 
3580 	case 'K':
3581 	    if (kp_help)
3582 		STRCPY(buf, "he! ");
3583 	    else if (kp_ex)
3584 	    {
3585 		if (cap->count0 != 0)
3586 		    vim_snprintf((char *)buf, buflen, "%s %ld",
3587 							     kp, cap->count0);
3588 		else
3589 		    STRCPY(buf, kp);
3590 		STRCAT(buf, " ");
3591 	    }
3592 	    else
3593 	    {
3594 		// An external command will probably use an argument starting
3595 		// with "-" as an option.  To avoid trouble we skip the "-".
3596 		while (*ptr == '-' && n > 0)
3597 		{
3598 		    ++ptr;
3599 		    --n;
3600 		}
3601 		if (n == 0)
3602 		{
3603 		    emsg(_(e_noident));	 // found dashes only
3604 		    vim_free(buf);
3605 		    return;
3606 		}
3607 
3608 		// When a count is given, turn it into a range.  Is this
3609 		// really what we want?
3610 		isman = (STRCMP(kp, "man") == 0);
3611 		isman_s = (STRCMP(kp, "man -s") == 0);
3612 		if (cap->count0 != 0 && !(isman || isman_s))
3613 		    sprintf((char *)buf, ".,.+%ld", cap->count0 - 1);
3614 
3615 		STRCAT(buf, "! ");
3616 		if (cap->count0 == 0 && isman_s)
3617 		    STRCAT(buf, "man");
3618 		else
3619 		    STRCAT(buf, kp);
3620 		STRCAT(buf, " ");
3621 		if (cap->count0 != 0 && (isman || isman_s))
3622 		{
3623 		    sprintf((char *)buf + STRLEN(buf), "%ld", cap->count0);
3624 		    STRCAT(buf, " ");
3625 		}
3626 	    }
3627 	    break;
3628 
3629 	case ']':
3630 	    tag_cmd = TRUE;
3631 #ifdef FEAT_CSCOPE
3632 	    if (p_cst)
3633 		STRCPY(buf, "cstag ");
3634 	    else
3635 #endif
3636 		STRCPY(buf, "ts ");
3637 	    break;
3638 
3639 	default:
3640 	    tag_cmd = TRUE;
3641 	    if (curbuf->b_help)
3642 		STRCPY(buf, "he! ");
3643 	    else
3644 	    {
3645 		if (g_cmd)
3646 		    STRCPY(buf, "tj ");
3647 		else
3648 		    sprintf((char *)buf, "%ldta ", cap->count0);
3649 	    }
3650     }
3651 
3652     /*
3653      * Now grab the chars in the identifier
3654      */
3655     if (cmdchar == 'K' && !kp_help)
3656     {
3657 	ptr = vim_strnsave(ptr, n);
3658 	if (kp_ex)
3659 	    // Escape the argument properly for an Ex command
3660 	    p = vim_strsave_fnameescape(ptr, FALSE);
3661 	else
3662 	    // Escape the argument properly for a shell command
3663 	    p = vim_strsave_shellescape(ptr, TRUE, TRUE);
3664 	vim_free(ptr);
3665 	if (p == NULL)
3666 	{
3667 	    vim_free(buf);
3668 	    return;
3669 	}
3670 	newbuf = vim_realloc(buf, STRLEN(buf) + STRLEN(p) + 1);
3671 	if (newbuf == NULL)
3672 	{
3673 	    vim_free(buf);
3674 	    vim_free(p);
3675 	    return;
3676 	}
3677 	buf = newbuf;
3678 	STRCAT(buf, p);
3679 	vim_free(p);
3680     }
3681     else
3682     {
3683 	if (cmdchar == '*')
3684 	    aux_ptr = (char_u *)(p_magic ? "/.*~[^$\\" : "/^$\\");
3685 	else if (cmdchar == '#')
3686 	    aux_ptr = (char_u *)(p_magic ? "/?.*~[^$\\" : "/?^$\\");
3687 	else if (tag_cmd)
3688 	{
3689 	    if (curbuf->b_help)
3690 		// ":help" handles unescaped argument
3691 		aux_ptr = (char_u *)"";
3692 	    else
3693 		aux_ptr = (char_u *)"\\|\"\n[";
3694 	}
3695 	else
3696 	    aux_ptr = (char_u *)"\\|\"\n*?[";
3697 
3698 	p = buf + STRLEN(buf);
3699 	while (n-- > 0)
3700 	{
3701 	    // put a backslash before \ and some others
3702 	    if (vim_strchr(aux_ptr, *ptr) != NULL)
3703 		*p++ = '\\';
3704 	    // When current byte is a part of multibyte character, copy all
3705 	    // bytes of that character.
3706 	    if (has_mbyte)
3707 	    {
3708 		int i;
3709 		int len = (*mb_ptr2len)(ptr) - 1;
3710 
3711 		for (i = 0; i < len && n >= 1; ++i, --n)
3712 		    *p++ = *ptr++;
3713 	    }
3714 	    *p++ = *ptr++;
3715 	}
3716 	*p = NUL;
3717     }
3718 
3719     /*
3720      * Execute the command.
3721      */
3722     if (cmdchar == '*' || cmdchar == '#')
3723     {
3724 	if (!g_cmd && (has_mbyte
3725 		    ? vim_iswordp(mb_prevptr(ml_get_curline(), ptr))
3726 		    : vim_iswordc(ptr[-1])))
3727 	    STRCAT(buf, "\\>");
3728 
3729 	// put pattern in search history
3730 	init_history();
3731 	add_to_history(HIST_SEARCH, buf, TRUE, NUL);
3732 
3733 	(void)normal_search(cap, cmdchar == '*' ? '/' : '?', buf, 0, NULL);
3734     }
3735     else
3736     {
3737 	g_tag_at_cursor = TRUE;
3738 	do_cmdline_cmd(buf);
3739 	g_tag_at_cursor = FALSE;
3740     }
3741 
3742     vim_free(buf);
3743 }
3744 
3745 /*
3746  * Get visually selected text, within one line only.
3747  * Returns FAIL if more than one line selected.
3748  */
3749     int
3750 get_visual_text(
3751     cmdarg_T	*cap,
3752     char_u	**pp,	    // return: start of selected text
3753     int		*lenp)	    // return: length of selected text
3754 {
3755     if (VIsual_mode != 'V')
3756 	unadjust_for_sel();
3757     if (VIsual.lnum != curwin->w_cursor.lnum)
3758     {
3759 	if (cap != NULL)
3760 	    clearopbeep(cap->oap);
3761 	return FAIL;
3762     }
3763     if (VIsual_mode == 'V')
3764     {
3765 	*pp = ml_get_curline();
3766 	*lenp = (int)STRLEN(*pp);
3767     }
3768     else
3769     {
3770 	if (LT_POS(curwin->w_cursor, VIsual))
3771 	{
3772 	    *pp = ml_get_pos(&curwin->w_cursor);
3773 	    *lenp = VIsual.col - curwin->w_cursor.col + 1;
3774 	}
3775 	else
3776 	{
3777 	    *pp = ml_get_pos(&VIsual);
3778 	    *lenp = curwin->w_cursor.col - VIsual.col + 1;
3779 	}
3780 	if (has_mbyte)
3781 	    // Correct the length to include the whole last character.
3782 	    *lenp += (*mb_ptr2len)(*pp + (*lenp - 1)) - 1;
3783     }
3784     reset_VIsual_and_resel();
3785     return OK;
3786 }
3787 
3788 /*
3789  * CTRL-T: backwards in tag stack
3790  */
3791     static void
3792 nv_tagpop(cmdarg_T *cap)
3793 {
3794     if (!checkclearopq(cap->oap))
3795 	do_tag((char_u *)"", DT_POP, (int)cap->count1, FALSE, TRUE);
3796 }
3797 
3798 /*
3799  * Handle scrolling command 'H', 'L' and 'M'.
3800  */
3801     static void
3802 nv_scroll(cmdarg_T *cap)
3803 {
3804     int		used = 0;
3805     long	n;
3806 #ifdef FEAT_FOLDING
3807     linenr_T	lnum;
3808 #endif
3809     int		half;
3810 
3811     cap->oap->motion_type = MLINE;
3812     setpcmark();
3813 
3814     if (cap->cmdchar == 'L')
3815     {
3816 	validate_botline();	    // make sure curwin->w_botline is valid
3817 	curwin->w_cursor.lnum = curwin->w_botline - 1;
3818 	if (cap->count1 - 1 >= curwin->w_cursor.lnum)
3819 	    curwin->w_cursor.lnum = 1;
3820 	else
3821 	{
3822 #ifdef FEAT_FOLDING
3823 	    if (hasAnyFolding(curwin))
3824 	    {
3825 		// Count a fold for one screen line.
3826 		for (n = cap->count1 - 1; n > 0
3827 			    && curwin->w_cursor.lnum > curwin->w_topline; --n)
3828 		{
3829 		    (void)hasFolding(curwin->w_cursor.lnum,
3830 						&curwin->w_cursor.lnum, NULL);
3831 		    --curwin->w_cursor.lnum;
3832 		}
3833 	    }
3834 	    else
3835 #endif
3836 		curwin->w_cursor.lnum -= cap->count1 - 1;
3837 	}
3838     }
3839     else
3840     {
3841 	if (cap->cmdchar == 'M')
3842 	{
3843 #ifdef FEAT_DIFF
3844 	    // Don't count filler lines above the window.
3845 	    used -= diff_check_fill(curwin, curwin->w_topline)
3846 							  - curwin->w_topfill;
3847 #endif
3848 	    validate_botline();	    // make sure w_empty_rows is valid
3849 	    half = (curwin->w_height - curwin->w_empty_rows + 1) / 2;
3850 	    for (n = 0; curwin->w_topline + n < curbuf->b_ml.ml_line_count; ++n)
3851 	    {
3852 #ifdef FEAT_DIFF
3853 		// Count half he number of filler lines to be "below this
3854 		// line" and half to be "above the next line".
3855 		if (n > 0 && used + diff_check_fill(curwin, curwin->w_topline
3856 							     + n) / 2 >= half)
3857 		{
3858 		    --n;
3859 		    break;
3860 		}
3861 #endif
3862 		used += plines(curwin->w_topline + n);
3863 		if (used >= half)
3864 		    break;
3865 #ifdef FEAT_FOLDING
3866 		if (hasFolding(curwin->w_topline + n, NULL, &lnum))
3867 		    n = lnum - curwin->w_topline;
3868 #endif
3869 	    }
3870 	    if (n > 0 && used > curwin->w_height)
3871 		--n;
3872 	}
3873 	else // (cap->cmdchar == 'H')
3874 	{
3875 	    n = cap->count1 - 1;
3876 #ifdef FEAT_FOLDING
3877 	    if (hasAnyFolding(curwin))
3878 	    {
3879 		// Count a fold for one screen line.
3880 		lnum = curwin->w_topline;
3881 		while (n-- > 0 && lnum < curwin->w_botline - 1)
3882 		{
3883 		    (void)hasFolding(lnum, NULL, &lnum);
3884 		    ++lnum;
3885 		}
3886 		n = lnum - curwin->w_topline;
3887 	    }
3888 #endif
3889 	}
3890 	curwin->w_cursor.lnum = curwin->w_topline + n;
3891 	if (curwin->w_cursor.lnum > curbuf->b_ml.ml_line_count)
3892 	    curwin->w_cursor.lnum = curbuf->b_ml.ml_line_count;
3893     }
3894 
3895     // Correct for 'so', except when an operator is pending.
3896     if (cap->oap->op_type == OP_NOP)
3897 	cursor_correct();
3898     beginline(BL_SOL | BL_FIX);
3899 }
3900 
3901 /*
3902  * Cursor right commands.
3903  */
3904     static void
3905 nv_right(cmdarg_T *cap)
3906 {
3907     long	n;
3908     int		past_line;
3909 
3910     if (mod_mask & (MOD_MASK_SHIFT | MOD_MASK_CTRL))
3911     {
3912 	// <C-Right> and <S-Right> move a word or WORD right
3913 	if (mod_mask & MOD_MASK_CTRL)
3914 	    cap->arg = TRUE;
3915 	nv_wordcmd(cap);
3916 	return;
3917     }
3918 
3919     cap->oap->motion_type = MCHAR;
3920     cap->oap->inclusive = FALSE;
3921     past_line = (VIsual_active && *p_sel != 'o');
3922 
3923     /*
3924      * In virtual edit mode, there's no such thing as "past_line", as lines
3925      * are (theoretically) infinitely long.
3926      */
3927     if (virtual_active())
3928 	past_line = 0;
3929 
3930     for (n = cap->count1; n > 0; --n)
3931     {
3932 	if ((!past_line && oneright() == FAIL)
3933 		|| (past_line && *ml_get_cursor() == NUL)
3934 		)
3935 	{
3936 	    /*
3937 	     *	  <Space> wraps to next line if 'whichwrap' has 's'.
3938 	     *	      'l' wraps to next line if 'whichwrap' has 'l'.
3939 	     * CURS_RIGHT wraps to next line if 'whichwrap' has '>'.
3940 	     */
3941 	    if (       ((cap->cmdchar == ' '
3942 			    && vim_strchr(p_ww, 's') != NULL)
3943 			|| (cap->cmdchar == 'l'
3944 			    && vim_strchr(p_ww, 'l') != NULL)
3945 			|| (cap->cmdchar == K_RIGHT
3946 			    && vim_strchr(p_ww, '>') != NULL))
3947 		    && curwin->w_cursor.lnum < curbuf->b_ml.ml_line_count)
3948 	    {
3949 		// When deleting we also count the NL as a character.
3950 		// Set cap->oap->inclusive when last char in the line is
3951 		// included, move to next line after that
3952 		if (	   cap->oap->op_type != OP_NOP
3953 			&& !cap->oap->inclusive
3954 			&& !LINEEMPTY(curwin->w_cursor.lnum))
3955 		    cap->oap->inclusive = TRUE;
3956 		else
3957 		{
3958 		    ++curwin->w_cursor.lnum;
3959 		    curwin->w_cursor.col = 0;
3960 		    curwin->w_cursor.coladd = 0;
3961 		    curwin->w_set_curswant = TRUE;
3962 		    cap->oap->inclusive = FALSE;
3963 		}
3964 		continue;
3965 	    }
3966 	    if (cap->oap->op_type == OP_NOP)
3967 	    {
3968 		// Only beep and flush if not moved at all
3969 		if (n == cap->count1)
3970 		    beep_flush();
3971 	    }
3972 	    else
3973 	    {
3974 		if (!LINEEMPTY(curwin->w_cursor.lnum))
3975 		    cap->oap->inclusive = TRUE;
3976 	    }
3977 	    break;
3978 	}
3979 	else if (past_line)
3980 	{
3981 	    curwin->w_set_curswant = TRUE;
3982 	    if (virtual_active())
3983 		oneright();
3984 	    else
3985 	    {
3986 		if (has_mbyte)
3987 		    curwin->w_cursor.col += (*mb_ptr2len)(ml_get_cursor());
3988 		else
3989 		    ++curwin->w_cursor.col;
3990 	    }
3991 	}
3992     }
3993 #ifdef FEAT_FOLDING
3994     if (n != cap->count1 && (fdo_flags & FDO_HOR) && KeyTyped
3995 					       && cap->oap->op_type == OP_NOP)
3996 	foldOpenCursor();
3997 #endif
3998 }
3999 
4000 /*
4001  * Cursor left commands.
4002  *
4003  * Returns TRUE when operator end should not be adjusted.
4004  */
4005     static void
4006 nv_left(cmdarg_T *cap)
4007 {
4008     long	n;
4009 
4010     if (mod_mask & (MOD_MASK_SHIFT | MOD_MASK_CTRL))
4011     {
4012 	// <C-Left> and <S-Left> move a word or WORD left
4013 	if (mod_mask & MOD_MASK_CTRL)
4014 	    cap->arg = 1;
4015 	nv_bck_word(cap);
4016 	return;
4017     }
4018 
4019     cap->oap->motion_type = MCHAR;
4020     cap->oap->inclusive = FALSE;
4021     for (n = cap->count1; n > 0; --n)
4022     {
4023 	if (oneleft() == FAIL)
4024 	{
4025 	    // <BS> and <Del> wrap to previous line if 'whichwrap' has 'b'.
4026 	    //		 'h' wraps to previous line if 'whichwrap' has 'h'.
4027 	    //	   CURS_LEFT wraps to previous line if 'whichwrap' has '<'.
4028 	    if (       (((cap->cmdchar == K_BS
4029 				|| cap->cmdchar == Ctrl_H)
4030 			    && vim_strchr(p_ww, 'b') != NULL)
4031 			|| (cap->cmdchar == 'h'
4032 			    && vim_strchr(p_ww, 'h') != NULL)
4033 			|| (cap->cmdchar == K_LEFT
4034 			    && vim_strchr(p_ww, '<') != NULL))
4035 		    && curwin->w_cursor.lnum > 1)
4036 	    {
4037 		--(curwin->w_cursor.lnum);
4038 		coladvance((colnr_T)MAXCOL);
4039 		curwin->w_set_curswant = TRUE;
4040 
4041 		// When the NL before the first char has to be deleted we
4042 		// put the cursor on the NUL after the previous line.
4043 		// This is a very special case, be careful!
4044 		// Don't adjust op_end now, otherwise it won't work.
4045 		if (	   (cap->oap->op_type == OP_DELETE
4046 			    || cap->oap->op_type == OP_CHANGE)
4047 			&& !LINEEMPTY(curwin->w_cursor.lnum))
4048 		{
4049 		    char_u *cp = ml_get_cursor();
4050 
4051 		    if (*cp != NUL)
4052 		    {
4053 			if (has_mbyte)
4054 			    curwin->w_cursor.col += (*mb_ptr2len)(cp);
4055 			else
4056 			    ++curwin->w_cursor.col;
4057 		    }
4058 		    cap->retval |= CA_NO_ADJ_OP_END;
4059 		}
4060 		continue;
4061 	    }
4062 	    // Only beep and flush if not moved at all
4063 	    else if (cap->oap->op_type == OP_NOP && n == cap->count1)
4064 		beep_flush();
4065 	    break;
4066 	}
4067     }
4068 #ifdef FEAT_FOLDING
4069     if (n != cap->count1 && (fdo_flags & FDO_HOR) && KeyTyped
4070 					       && cap->oap->op_type == OP_NOP)
4071 	foldOpenCursor();
4072 #endif
4073 }
4074 
4075 /*
4076  * Cursor up commands.
4077  * cap->arg is TRUE for "-": Move cursor to first non-blank.
4078  */
4079     static void
4080 nv_up(cmdarg_T *cap)
4081 {
4082     if (mod_mask & MOD_MASK_SHIFT)
4083     {
4084 	// <S-Up> is page up
4085 	cap->arg = BACKWARD;
4086 	nv_page(cap);
4087     }
4088     else
4089     {
4090 	cap->oap->motion_type = MLINE;
4091 	if (cursor_up(cap->count1, cap->oap->op_type == OP_NOP) == FAIL)
4092 	    clearopbeep(cap->oap);
4093 	else if (cap->arg)
4094 	    beginline(BL_WHITE | BL_FIX);
4095     }
4096 }
4097 
4098 /*
4099  * Cursor down commands.
4100  * cap->arg is TRUE for CR and "+": Move cursor to first non-blank.
4101  */
4102     static void
4103 nv_down(cmdarg_T *cap)
4104 {
4105     if (mod_mask & MOD_MASK_SHIFT)
4106     {
4107 	// <S-Down> is page down
4108 	cap->arg = FORWARD;
4109 	nv_page(cap);
4110     }
4111 #if defined(FEAT_QUICKFIX)
4112     // Quickfix window only: view the result under the cursor.
4113     else if (bt_quickfix(curbuf) && cap->cmdchar == CAR)
4114 	qf_view_result(FALSE);
4115 #endif
4116     else
4117     {
4118 #ifdef FEAT_CMDWIN
4119 	// In the cmdline window a <CR> executes the command.
4120 	if (cmdwin_type != 0 && cap->cmdchar == CAR)
4121 	    cmdwin_result = CAR;
4122 	else
4123 #endif
4124 #ifdef FEAT_JOB_CHANNEL
4125 	// In a prompt buffer a <CR> in the last line invokes the callback.
4126 	if (bt_prompt(curbuf) && cap->cmdchar == CAR
4127 		       && curwin->w_cursor.lnum == curbuf->b_ml.ml_line_count)
4128 	{
4129 	    invoke_prompt_callback();
4130 	    if (restart_edit == 0)
4131 		restart_edit = 'a';
4132 	}
4133 	else
4134 #endif
4135 	{
4136 	    cap->oap->motion_type = MLINE;
4137 	    if (cursor_down(cap->count1, cap->oap->op_type == OP_NOP) == FAIL)
4138 		clearopbeep(cap->oap);
4139 	    else if (cap->arg)
4140 		beginline(BL_WHITE | BL_FIX);
4141 	}
4142     }
4143 }
4144 
4145 #ifdef FEAT_SEARCHPATH
4146 /*
4147  * Grab the file name under the cursor and edit it.
4148  */
4149     static void
4150 nv_gotofile(cmdarg_T *cap)
4151 {
4152     char_u	*ptr;
4153     linenr_T	lnum = -1;
4154 
4155     if (text_locked())
4156     {
4157 	clearopbeep(cap->oap);
4158 	text_locked_msg();
4159 	return;
4160     }
4161     if (curbuf_locked())
4162     {
4163 	clearop(cap->oap);
4164 	return;
4165     }
4166 #ifdef FEAT_PROP_POPUP
4167     if (ERROR_IF_TERM_POPUP_WINDOW)
4168 	return;
4169 #endif
4170 
4171     ptr = grab_file_name(cap->count1, &lnum);
4172 
4173     if (ptr != NULL)
4174     {
4175 	// do autowrite if necessary
4176 	if (curbufIsChanged() && curbuf->b_nwindows <= 1 && !buf_hide(curbuf))
4177 	    (void)autowrite(curbuf, FALSE);
4178 	setpcmark();
4179 	if (do_ecmd(0, ptr, NULL, NULL, ECMD_LAST,
4180 				buf_hide(curbuf) ? ECMD_HIDE : 0, curwin) == OK
4181 		&& cap->nchar == 'F' && lnum >= 0)
4182 	{
4183 	    curwin->w_cursor.lnum = lnum;
4184 	    check_cursor_lnum();
4185 	    beginline(BL_SOL | BL_FIX);
4186 	}
4187 	vim_free(ptr);
4188     }
4189     else
4190 	clearop(cap->oap);
4191 }
4192 #endif
4193 
4194 /*
4195  * <End> command: to end of current line or last line.
4196  */
4197     static void
4198 nv_end(cmdarg_T *cap)
4199 {
4200     if (cap->arg || (mod_mask & MOD_MASK_CTRL))	// CTRL-END = goto last line
4201     {
4202 	cap->arg = TRUE;
4203 	nv_goto(cap);
4204 	cap->count1 = 1;		// to end of current line
4205     }
4206     nv_dollar(cap);
4207 }
4208 
4209 /*
4210  * Handle the "$" command.
4211  */
4212     static void
4213 nv_dollar(cmdarg_T *cap)
4214 {
4215     cap->oap->motion_type = MCHAR;
4216     cap->oap->inclusive = TRUE;
4217     // In virtual mode when off the edge of a line and an operator
4218     // is pending (whew!) keep the cursor where it is.
4219     // Otherwise, send it to the end of the line.
4220     if (!virtual_active() || gchar_cursor() != NUL
4221 					       || cap->oap->op_type == OP_NOP)
4222 	curwin->w_curswant = MAXCOL;	// so we stay at the end
4223     if (cursor_down((long)(cap->count1 - 1),
4224 					 cap->oap->op_type == OP_NOP) == FAIL)
4225 	clearopbeep(cap->oap);
4226 #ifdef FEAT_FOLDING
4227     else if ((fdo_flags & FDO_HOR) && KeyTyped && cap->oap->op_type == OP_NOP)
4228 	foldOpenCursor();
4229 #endif
4230 }
4231 
4232 /*
4233  * Implementation of '?' and '/' commands.
4234  * If cap->arg is TRUE don't set PC mark.
4235  */
4236     static void
4237 nv_search(cmdarg_T *cap)
4238 {
4239     oparg_T	*oap = cap->oap;
4240     pos_T	save_cursor = curwin->w_cursor;
4241 
4242     if (cap->cmdchar == '?' && cap->oap->op_type == OP_ROT13)
4243     {
4244 	// Translate "g??" to "g?g?"
4245 	cap->cmdchar = 'g';
4246 	cap->nchar = '?';
4247 	nv_operator(cap);
4248 	return;
4249     }
4250 
4251     // When using 'incsearch' the cursor may be moved to set a different search
4252     // start position.
4253     cap->searchbuf = getcmdline(cap->cmdchar, cap->count1, 0, TRUE);
4254 
4255     if (cap->searchbuf == NULL)
4256     {
4257 	clearop(oap);
4258 	return;
4259     }
4260 
4261     (void)normal_search(cap, cap->cmdchar, cap->searchbuf,
4262 			(cap->arg || !EQUAL_POS(save_cursor, curwin->w_cursor))
4263 						      ? 0 : SEARCH_MARK, NULL);
4264 }
4265 
4266 /*
4267  * Handle "N" and "n" commands.
4268  * cap->arg is SEARCH_REV for "N", 0 for "n".
4269  */
4270     static void
4271 nv_next(cmdarg_T *cap)
4272 {
4273     pos_T   old = curwin->w_cursor;
4274     int	    wrapped = FALSE;
4275     int	    i = normal_search(cap, 0, NULL, SEARCH_MARK | cap->arg, &wrapped);
4276 
4277     if (i == 1 && !wrapped && EQUAL_POS(old, curwin->w_cursor))
4278     {
4279 	// Avoid getting stuck on the current cursor position, which can
4280 	// happen when an offset is given and the cursor is on the last char
4281 	// in the buffer: Repeat with count + 1.
4282 	cap->count1 += 1;
4283 	(void)normal_search(cap, 0, NULL, SEARCH_MARK | cap->arg, NULL);
4284 	cap->count1 -= 1;
4285     }
4286 }
4287 
4288 /*
4289  * Search for "pat" in direction "dir" ('/' or '?', 0 for repeat).
4290  * Uses only cap->count1 and cap->oap from "cap".
4291  * Return 0 for failure, 1 for found, 2 for found and line offset added.
4292  */
4293     static int
4294 normal_search(
4295     cmdarg_T	*cap,
4296     int		dir,
4297     char_u	*pat,
4298     int		opt,		// extra flags for do_search()
4299     int		*wrapped)
4300 {
4301     int		i;
4302     searchit_arg_T sia;
4303 
4304     cap->oap->motion_type = MCHAR;
4305     cap->oap->inclusive = FALSE;
4306     cap->oap->use_reg_one = TRUE;
4307     curwin->w_set_curswant = TRUE;
4308 
4309     CLEAR_FIELD(sia);
4310     i = do_search(cap->oap, dir, dir, pat, cap->count1,
4311 			    opt | SEARCH_OPT | SEARCH_ECHO | SEARCH_MSG, &sia);
4312     if (wrapped != NULL)
4313 	*wrapped = sia.sa_wrapped;
4314     if (i == 0)
4315 	clearop(cap->oap);
4316     else
4317     {
4318 	if (i == 2)
4319 	    cap->oap->motion_type = MLINE;
4320 	curwin->w_cursor.coladd = 0;
4321 #ifdef FEAT_FOLDING
4322 	if (cap->oap->op_type == OP_NOP && (fdo_flags & FDO_SEARCH) && KeyTyped)
4323 	    foldOpenCursor();
4324 #endif
4325     }
4326 
4327     // "/$" will put the cursor after the end of the line, may need to
4328     // correct that here
4329     check_cursor();
4330     return i;
4331 }
4332 
4333 /*
4334  * Character search commands.
4335  * cap->arg is BACKWARD for 'F' and 'T', FORWARD for 'f' and 't', TRUE for
4336  * ',' and FALSE for ';'.
4337  * cap->nchar is NUL for ',' and ';' (repeat the search)
4338  */
4339     static void
4340 nv_csearch(cmdarg_T *cap)
4341 {
4342     int		t_cmd;
4343 
4344     if (cap->cmdchar == 't' || cap->cmdchar == 'T')
4345 	t_cmd = TRUE;
4346     else
4347 	t_cmd = FALSE;
4348 
4349     cap->oap->motion_type = MCHAR;
4350     if (IS_SPECIAL(cap->nchar) || searchc(cap, t_cmd) == FAIL)
4351 	clearopbeep(cap->oap);
4352     else
4353     {
4354 	curwin->w_set_curswant = TRUE;
4355 	// Include a Tab for "tx" and for "dfx".
4356 	if (gchar_cursor() == TAB && virtual_active() && cap->arg == FORWARD
4357 		&& (t_cmd || cap->oap->op_type != OP_NOP))
4358 	{
4359 	    colnr_T	scol, ecol;
4360 
4361 	    getvcol(curwin, &curwin->w_cursor, &scol, NULL, &ecol);
4362 	    curwin->w_cursor.coladd = ecol - scol;
4363 	}
4364 	else
4365 	    curwin->w_cursor.coladd = 0;
4366 	adjust_for_sel(cap);
4367 #ifdef FEAT_FOLDING
4368 	if ((fdo_flags & FDO_HOR) && KeyTyped && cap->oap->op_type == OP_NOP)
4369 	    foldOpenCursor();
4370 #endif
4371     }
4372 }
4373 
4374 /*
4375  * "[" and "]" commands.
4376  * cap->arg is BACKWARD for "[" and FORWARD for "]".
4377  */
4378     static void
4379 nv_brackets(cmdarg_T *cap)
4380 {
4381     pos_T	new_pos = {0, 0, 0};
4382     pos_T	prev_pos;
4383     pos_T	*pos = NULL;	    // init for GCC
4384     pos_T	old_pos;	    // cursor position before command
4385     int		flag;
4386     long	n;
4387     int		findc;
4388     int		c;
4389 
4390     cap->oap->motion_type = MCHAR;
4391     cap->oap->inclusive = FALSE;
4392     old_pos = curwin->w_cursor;
4393     curwin->w_cursor.coladd = 0;    // TODO: don't do this for an error.
4394 
4395 #ifdef FEAT_SEARCHPATH
4396     /*
4397      * "[f" or "]f" : Edit file under the cursor (same as "gf")
4398      */
4399     if (cap->nchar == 'f')
4400 	nv_gotofile(cap);
4401     else
4402 #endif
4403 
4404 #ifdef FEAT_FIND_ID
4405     /*
4406      * Find the occurrence(s) of the identifier or define under cursor
4407      * in current and included files or jump to the first occurrence.
4408      *
4409      *			search	     list	    jump
4410      *		      fwd   bwd    fwd	 bwd	 fwd	bwd
4411      * identifier     "]i"  "[i"   "]I"  "[I"	"]^I"  "[^I"
4412      * define	      "]d"  "[d"   "]D"  "[D"	"]^D"  "[^D"
4413      */
4414     if (vim_strchr((char_u *)
4415 # ifdef EBCDIC
4416 		"iI\005dD\067",
4417 # else
4418 		"iI\011dD\004",
4419 # endif
4420 		cap->nchar) != NULL)
4421     {
4422 	char_u	*ptr;
4423 	int	len;
4424 
4425 	if ((len = find_ident_under_cursor(&ptr, FIND_IDENT)) == 0)
4426 	    clearop(cap->oap);
4427 	else
4428 	{
4429 	    find_pattern_in_path(ptr, 0, len, TRUE,
4430 		cap->count0 == 0 ? !isupper(cap->nchar) : FALSE,
4431 		((cap->nchar & 0xf) == ('d' & 0xf)) ?  FIND_DEFINE : FIND_ANY,
4432 		cap->count1,
4433 		isupper(cap->nchar) ? ACTION_SHOW_ALL :
4434 			    islower(cap->nchar) ? ACTION_SHOW : ACTION_GOTO,
4435 		cap->cmdchar == ']' ? curwin->w_cursor.lnum + 1 : (linenr_T)1,
4436 		(linenr_T)MAXLNUM);
4437 	    curwin->w_set_curswant = TRUE;
4438 	}
4439     }
4440     else
4441 #endif
4442 
4443     /*
4444      * "[{", "[(", "]}" or "])": go to Nth unclosed '{', '(', '}' or ')'
4445      * "[#", "]#": go to start/end of Nth innermost #if..#endif construct.
4446      * "[/", "[*", "]/", "]*": go to Nth comment start/end.
4447      * "[m" or "]m" search for prev/next start of (Java) method.
4448      * "[M" or "]M" search for prev/next end of (Java) method.
4449      */
4450     if (  (cap->cmdchar == '['
4451 		&& vim_strchr((char_u *)"{(*/#mM", cap->nchar) != NULL)
4452 	    || (cap->cmdchar == ']'
4453 		&& vim_strchr((char_u *)"})*/#mM", cap->nchar) != NULL))
4454     {
4455 	if (cap->nchar == '*')
4456 	    cap->nchar = '/';
4457 	prev_pos.lnum = 0;
4458 	if (cap->nchar == 'm' || cap->nchar == 'M')
4459 	{
4460 	    if (cap->cmdchar == '[')
4461 		findc = '{';
4462 	    else
4463 		findc = '}';
4464 	    n = 9999;
4465 	}
4466 	else
4467 	{
4468 	    findc = cap->nchar;
4469 	    n = cap->count1;
4470 	}
4471 	for ( ; n > 0; --n)
4472 	{
4473 	    if ((pos = findmatchlimit(cap->oap, findc,
4474 		(cap->cmdchar == '[') ? FM_BACKWARD : FM_FORWARD, 0)) == NULL)
4475 	    {
4476 		if (new_pos.lnum == 0)	// nothing found
4477 		{
4478 		    if (cap->nchar != 'm' && cap->nchar != 'M')
4479 			clearopbeep(cap->oap);
4480 		}
4481 		else
4482 		    pos = &new_pos;	// use last one found
4483 		break;
4484 	    }
4485 	    prev_pos = new_pos;
4486 	    curwin->w_cursor = *pos;
4487 	    new_pos = *pos;
4488 	}
4489 	curwin->w_cursor = old_pos;
4490 
4491 	/*
4492 	 * Handle "[m", "]m", "[M" and "[M".  The findmatchlimit() only
4493 	 * brought us to the match for "[m" and "]M" when inside a method.
4494 	 * Try finding the '{' or '}' we want to be at.
4495 	 * Also repeat for the given count.
4496 	 */
4497 	if (cap->nchar == 'm' || cap->nchar == 'M')
4498 	{
4499 	    // norm is TRUE for "]M" and "[m"
4500 	    int	    norm = ((findc == '{') == (cap->nchar == 'm'));
4501 
4502 	    n = cap->count1;
4503 	    // found a match: we were inside a method
4504 	    if (prev_pos.lnum != 0)
4505 	    {
4506 		pos = &prev_pos;
4507 		curwin->w_cursor = prev_pos;
4508 		if (norm)
4509 		    --n;
4510 	    }
4511 	    else
4512 		pos = NULL;
4513 	    while (n > 0)
4514 	    {
4515 		for (;;)
4516 		{
4517 		    if ((findc == '{' ? dec_cursor() : inc_cursor()) < 0)
4518 		    {
4519 			// if not found anything, that's an error
4520 			if (pos == NULL)
4521 			    clearopbeep(cap->oap);
4522 			n = 0;
4523 			break;
4524 		    }
4525 		    c = gchar_cursor();
4526 		    if (c == '{' || c == '}')
4527 		    {
4528 			// Must have found end/start of class: use it.
4529 			// Or found the place to be at.
4530 			if ((c == findc && norm) || (n == 1 && !norm))
4531 			{
4532 			    new_pos = curwin->w_cursor;
4533 			    pos = &new_pos;
4534 			    n = 0;
4535 			}
4536 			// if no match found at all, we started outside of the
4537 			// class and we're inside now.  Just go on.
4538 			else if (new_pos.lnum == 0)
4539 			{
4540 			    new_pos = curwin->w_cursor;
4541 			    pos = &new_pos;
4542 			}
4543 			// found start/end of other method: go to match
4544 			else if ((pos = findmatchlimit(cap->oap, findc,
4545 			    (cap->cmdchar == '[') ? FM_BACKWARD : FM_FORWARD,
4546 								  0)) == NULL)
4547 			    n = 0;
4548 			else
4549 			    curwin->w_cursor = *pos;
4550 			break;
4551 		    }
4552 		}
4553 		--n;
4554 	    }
4555 	    curwin->w_cursor = old_pos;
4556 	    if (pos == NULL && new_pos.lnum != 0)
4557 		clearopbeep(cap->oap);
4558 	}
4559 	if (pos != NULL)
4560 	{
4561 	    setpcmark();
4562 	    curwin->w_cursor = *pos;
4563 	    curwin->w_set_curswant = TRUE;
4564 #ifdef FEAT_FOLDING
4565 	    if ((fdo_flags & FDO_BLOCK) && KeyTyped
4566 					       && cap->oap->op_type == OP_NOP)
4567 		foldOpenCursor();
4568 #endif
4569 	}
4570     }
4571 
4572     /*
4573      * "[[", "[]", "]]" and "][": move to start or end of function
4574      */
4575     else if (cap->nchar == '[' || cap->nchar == ']')
4576     {
4577 	if (cap->nchar == cap->cmdchar)		    // "]]" or "[["
4578 	    flag = '{';
4579 	else
4580 	    flag = '}';		    // "][" or "[]"
4581 
4582 	curwin->w_set_curswant = TRUE;
4583 	/*
4584 	 * Imitate strange Vi behaviour: When using "]]" with an operator
4585 	 * we also stop at '}'.
4586 	 */
4587 	if (!findpar(&cap->oap->inclusive, cap->arg, cap->count1, flag,
4588 	      (cap->oap->op_type != OP_NOP
4589 				      && cap->arg == FORWARD && flag == '{')))
4590 	    clearopbeep(cap->oap);
4591 	else
4592 	{
4593 	    if (cap->oap->op_type == OP_NOP)
4594 		beginline(BL_WHITE | BL_FIX);
4595 #ifdef FEAT_FOLDING
4596 	    if ((fdo_flags & FDO_BLOCK) && KeyTyped && cap->oap->op_type == OP_NOP)
4597 		foldOpenCursor();
4598 #endif
4599 	}
4600     }
4601 
4602     /*
4603      * "[p", "[P", "]P" and "]p": put with indent adjustment
4604      */
4605     else if (cap->nchar == 'p' || cap->nchar == 'P')
4606     {
4607 	nv_put_opt(cap, TRUE);
4608     }
4609 
4610     /*
4611      * "['", "[`", "]'" and "]`": jump to next mark
4612      */
4613     else if (cap->nchar == '\'' || cap->nchar == '`')
4614     {
4615 	pos = &curwin->w_cursor;
4616 	for (n = cap->count1; n > 0; --n)
4617 	{
4618 	    prev_pos = *pos;
4619 	    pos = getnextmark(pos, cap->cmdchar == '[' ? BACKWARD : FORWARD,
4620 							  cap->nchar == '\'');
4621 	    if (pos == NULL)
4622 		break;
4623 	}
4624 	if (pos == NULL)
4625 	    pos = &prev_pos;
4626 	nv_cursormark(cap, cap->nchar == '\'', pos);
4627     }
4628 
4629     /*
4630      * [ or ] followed by a middle mouse click: put selected text with
4631      * indent adjustment.  Any other button just does as usual.
4632      */
4633     else if (cap->nchar >= K_RIGHTRELEASE && cap->nchar <= K_LEFTMOUSE)
4634     {
4635 	(void)do_mouse(cap->oap, cap->nchar,
4636 		       (cap->cmdchar == ']') ? FORWARD : BACKWARD,
4637 		       cap->count1, PUT_FIXINDENT);
4638     }
4639 
4640 #ifdef FEAT_FOLDING
4641     /*
4642      * "[z" and "]z": move to start or end of open fold.
4643      */
4644     else if (cap->nchar == 'z')
4645     {
4646 	if (foldMoveTo(FALSE, cap->cmdchar == ']' ? FORWARD : BACKWARD,
4647 							 cap->count1) == FAIL)
4648 	    clearopbeep(cap->oap);
4649     }
4650 #endif
4651 
4652 #ifdef FEAT_DIFF
4653     /*
4654      * "[c" and "]c": move to next or previous diff-change.
4655      */
4656     else if (cap->nchar == 'c')
4657     {
4658 	if (diff_move_to(cap->cmdchar == ']' ? FORWARD : BACKWARD,
4659 							 cap->count1) == FAIL)
4660 	    clearopbeep(cap->oap);
4661     }
4662 #endif
4663 
4664 #ifdef FEAT_SPELL
4665     /*
4666      * "[s", "[S", "]s" and "]S": move to next spell error.
4667      */
4668     else if (cap->nchar == 's' || cap->nchar == 'S')
4669     {
4670 	setpcmark();
4671 	for (n = 0; n < cap->count1; ++n)
4672 	    if (spell_move_to(curwin, cap->cmdchar == ']' ? FORWARD : BACKWARD,
4673 			  cap->nchar == 's' ? TRUE : FALSE, FALSE, NULL) == 0)
4674 	    {
4675 		clearopbeep(cap->oap);
4676 		break;
4677 	    }
4678 	    else
4679 		curwin->w_set_curswant = TRUE;
4680 # ifdef FEAT_FOLDING
4681 	if (cap->oap->op_type == OP_NOP && (fdo_flags & FDO_SEARCH) && KeyTyped)
4682 	    foldOpenCursor();
4683 # endif
4684     }
4685 #endif
4686 
4687     // Not a valid cap->nchar.
4688     else
4689 	clearopbeep(cap->oap);
4690 }
4691 
4692 /*
4693  * Handle Normal mode "%" command.
4694  */
4695     static void
4696 nv_percent(cmdarg_T *cap)
4697 {
4698     pos_T	*pos;
4699 #if defined(FEAT_FOLDING)
4700     linenr_T	lnum = curwin->w_cursor.lnum;
4701 #endif
4702 
4703     cap->oap->inclusive = TRUE;
4704     if (cap->count0)	    // {cnt}% : goto {cnt} percentage in file
4705     {
4706 	if (cap->count0 > 100)
4707 	    clearopbeep(cap->oap);
4708 	else
4709 	{
4710 	    cap->oap->motion_type = MLINE;
4711 	    setpcmark();
4712 	    // Round up, so CTRL-G will give same value.  Watch out for a
4713 	    // large line count, the line number must not go negative!
4714 	    if (curbuf->b_ml.ml_line_count > 1000000)
4715 		curwin->w_cursor.lnum = (curbuf->b_ml.ml_line_count + 99L)
4716 							 / 100L * cap->count0;
4717 	    else
4718 		curwin->w_cursor.lnum = (curbuf->b_ml.ml_line_count *
4719 						    cap->count0 + 99L) / 100L;
4720 	    if (curwin->w_cursor.lnum > curbuf->b_ml.ml_line_count)
4721 		curwin->w_cursor.lnum = curbuf->b_ml.ml_line_count;
4722 	    beginline(BL_SOL | BL_FIX);
4723 	}
4724     }
4725     else		    // "%" : go to matching paren
4726     {
4727 	cap->oap->motion_type = MCHAR;
4728 	cap->oap->use_reg_one = TRUE;
4729 	if ((pos = findmatch(cap->oap, NUL)) == NULL)
4730 	    clearopbeep(cap->oap);
4731 	else
4732 	{
4733 	    setpcmark();
4734 	    curwin->w_cursor = *pos;
4735 	    curwin->w_set_curswant = TRUE;
4736 	    curwin->w_cursor.coladd = 0;
4737 	    adjust_for_sel(cap);
4738 	}
4739     }
4740 #ifdef FEAT_FOLDING
4741     if (cap->oap->op_type == OP_NOP
4742 	    && lnum != curwin->w_cursor.lnum
4743 	    && (fdo_flags & FDO_PERCENT)
4744 	    && KeyTyped)
4745 	foldOpenCursor();
4746 #endif
4747 }
4748 
4749 /*
4750  * Handle "(" and ")" commands.
4751  * cap->arg is BACKWARD for "(" and FORWARD for ")".
4752  */
4753     static void
4754 nv_brace(cmdarg_T *cap)
4755 {
4756     cap->oap->motion_type = MCHAR;
4757     cap->oap->use_reg_one = TRUE;
4758     // The motion used to be inclusive for "(", but that is not what Vi does.
4759     cap->oap->inclusive = FALSE;
4760     curwin->w_set_curswant = TRUE;
4761 
4762     if (findsent(cap->arg, cap->count1) == FAIL)
4763 	clearopbeep(cap->oap);
4764     else
4765     {
4766 	// Don't leave the cursor on the NUL past end of line.
4767 	adjust_cursor(cap->oap);
4768 	curwin->w_cursor.coladd = 0;
4769 #ifdef FEAT_FOLDING
4770 	if ((fdo_flags & FDO_BLOCK) && KeyTyped && cap->oap->op_type == OP_NOP)
4771 	    foldOpenCursor();
4772 #endif
4773     }
4774 }
4775 
4776 /*
4777  * "m" command: Mark a position.
4778  */
4779     static void
4780 nv_mark(cmdarg_T *cap)
4781 {
4782     if (!checkclearop(cap->oap))
4783     {
4784 	if (setmark(cap->nchar) == FAIL)
4785 	    clearopbeep(cap->oap);
4786     }
4787 }
4788 
4789 /*
4790  * "{" and "}" commands.
4791  * cmd->arg is BACKWARD for "{" and FORWARD for "}".
4792  */
4793     static void
4794 nv_findpar(cmdarg_T *cap)
4795 {
4796     cap->oap->motion_type = MCHAR;
4797     cap->oap->inclusive = FALSE;
4798     cap->oap->use_reg_one = TRUE;
4799     curwin->w_set_curswant = TRUE;
4800     if (!findpar(&cap->oap->inclusive, cap->arg, cap->count1, NUL, FALSE))
4801 	clearopbeep(cap->oap);
4802     else
4803     {
4804 	curwin->w_cursor.coladd = 0;
4805 #ifdef FEAT_FOLDING
4806 	if ((fdo_flags & FDO_BLOCK) && KeyTyped && cap->oap->op_type == OP_NOP)
4807 	    foldOpenCursor();
4808 #endif
4809     }
4810 }
4811 
4812 /*
4813  * "u" command: Undo or make lower case.
4814  */
4815     static void
4816 nv_undo(cmdarg_T *cap)
4817 {
4818     if (cap->oap->op_type == OP_LOWER || VIsual_active)
4819     {
4820 	// translate "<Visual>u" to "<Visual>gu" and "guu" to "gugu"
4821 	cap->cmdchar = 'g';
4822 	cap->nchar = 'u';
4823 	nv_operator(cap);
4824     }
4825     else
4826 	nv_kundo(cap);
4827 }
4828 
4829 /*
4830  * <Undo> command.
4831  */
4832     static void
4833 nv_kundo(cmdarg_T *cap)
4834 {
4835     if (!checkclearopq(cap->oap))
4836     {
4837 #ifdef FEAT_JOB_CHANNEL
4838 	if (bt_prompt(curbuf))
4839 	{
4840 	    clearopbeep(cap->oap);
4841 	    return;
4842 	}
4843 #endif
4844 	u_undo((int)cap->count1);
4845 	curwin->w_set_curswant = TRUE;
4846     }
4847 }
4848 
4849 /*
4850  * Handle the "r" command.
4851  */
4852     static void
4853 nv_replace(cmdarg_T *cap)
4854 {
4855     char_u	*ptr;
4856     int		had_ctrl_v;
4857     long	n;
4858 
4859     if (checkclearop(cap->oap))
4860 	return;
4861 #ifdef FEAT_JOB_CHANNEL
4862     if (bt_prompt(curbuf) && !prompt_curpos_editable())
4863     {
4864 	clearopbeep(cap->oap);
4865 	return;
4866     }
4867 #endif
4868 
4869     // get another character
4870     if (cap->nchar == Ctrl_V)
4871     {
4872 	had_ctrl_v = Ctrl_V;
4873 	cap->nchar = get_literal();
4874 	// Don't redo a multibyte character with CTRL-V.
4875 	if (cap->nchar > DEL)
4876 	    had_ctrl_v = NUL;
4877     }
4878     else
4879 	had_ctrl_v = NUL;
4880 
4881     // Abort if the character is a special key.
4882     if (IS_SPECIAL(cap->nchar))
4883     {
4884 	clearopbeep(cap->oap);
4885 	return;
4886     }
4887 
4888     // Visual mode "r"
4889     if (VIsual_active)
4890     {
4891 	if (got_int)
4892 	    reset_VIsual();
4893 	if (had_ctrl_v)
4894 	{
4895 	    // Use a special (negative) number to make a difference between a
4896 	    // literal CR or NL and a line break.
4897 	    if (cap->nchar == CAR)
4898 		cap->nchar = REPLACE_CR_NCHAR;
4899 	    else if (cap->nchar == NL)
4900 		cap->nchar = REPLACE_NL_NCHAR;
4901 	}
4902 	nv_operator(cap);
4903 	return;
4904     }
4905 
4906     // Break tabs, etc.
4907     if (virtual_active())
4908     {
4909 	if (u_save_cursor() == FAIL)
4910 	    return;
4911 	if (gchar_cursor() == NUL)
4912 	{
4913 	    // Add extra space and put the cursor on the first one.
4914 	    coladvance_force((colnr_T)(getviscol() + cap->count1));
4915 	    curwin->w_cursor.col -= cap->count1;
4916 	}
4917 	else if (gchar_cursor() == TAB)
4918 	    coladvance_force(getviscol());
4919     }
4920 
4921     // Abort if not enough characters to replace.
4922     ptr = ml_get_cursor();
4923     if (STRLEN(ptr) < (unsigned)cap->count1
4924 	    || (has_mbyte && mb_charlen(ptr) < cap->count1))
4925     {
4926 	clearopbeep(cap->oap);
4927 	return;
4928     }
4929 
4930     /*
4931      * Replacing with a TAB is done by edit() when it is complicated because
4932      * 'expandtab' or 'smarttab' is set.  CTRL-V TAB inserts a literal TAB.
4933      * Other characters are done below to avoid problems with things like
4934      * CTRL-V 048 (for edit() this would be R CTRL-V 0 ESC).
4935      */
4936     if (had_ctrl_v != Ctrl_V && cap->nchar == '\t' && (curbuf->b_p_et || p_sta))
4937     {
4938 	stuffnumReadbuff(cap->count1);
4939 	stuffcharReadbuff('R');
4940 	stuffcharReadbuff('\t');
4941 	stuffcharReadbuff(ESC);
4942 	return;
4943     }
4944 
4945     // save line for undo
4946     if (u_save_cursor() == FAIL)
4947 	return;
4948 
4949     if (had_ctrl_v != Ctrl_V && (cap->nchar == '\r' || cap->nchar == '\n'))
4950     {
4951 	/*
4952 	 * Replace character(s) by a single newline.
4953 	 * Strange vi behaviour: Only one newline is inserted.
4954 	 * Delete the characters here.
4955 	 * Insert the newline with an insert command, takes care of
4956 	 * autoindent.	The insert command depends on being on the last
4957 	 * character of a line or not.
4958 	 */
4959 	(void)del_chars(cap->count1, FALSE);	// delete the characters
4960 	stuffcharReadbuff('\r');
4961 	stuffcharReadbuff(ESC);
4962 
4963 	// Give 'r' to edit(), to get the redo command right.
4964 	invoke_edit(cap, TRUE, 'r', FALSE);
4965     }
4966     else
4967     {
4968 	prep_redo(cap->oap->regname, cap->count1,
4969 				       NUL, 'r', NUL, had_ctrl_v, cap->nchar);
4970 
4971 	curbuf->b_op_start = curwin->w_cursor;
4972 	if (has_mbyte)
4973 	{
4974 	    int		old_State = State;
4975 
4976 	    if (cap->ncharC1 != 0)
4977 		AppendCharToRedobuff(cap->ncharC1);
4978 	    if (cap->ncharC2 != 0)
4979 		AppendCharToRedobuff(cap->ncharC2);
4980 
4981 	    // This is slow, but it handles replacing a single-byte with a
4982 	    // multi-byte and the other way around.  Also handles adding
4983 	    // composing characters for utf-8.
4984 	    for (n = cap->count1; n > 0; --n)
4985 	    {
4986 		State = REPLACE;
4987 		if (cap->nchar == Ctrl_E || cap->nchar == Ctrl_Y)
4988 		{
4989 		    int c = ins_copychar(curwin->w_cursor.lnum
4990 					   + (cap->nchar == Ctrl_Y ? -1 : 1));
4991 		    if (c != NUL)
4992 			ins_char(c);
4993 		    else
4994 			// will be decremented further down
4995 			++curwin->w_cursor.col;
4996 		}
4997 		else
4998 		    ins_char(cap->nchar);
4999 		State = old_State;
5000 		if (cap->ncharC1 != 0)
5001 		    ins_char(cap->ncharC1);
5002 		if (cap->ncharC2 != 0)
5003 		    ins_char(cap->ncharC2);
5004 	    }
5005 	}
5006 	else
5007 	{
5008 	    /*
5009 	     * Replace the characters within one line.
5010 	     */
5011 	    for (n = cap->count1; n > 0; --n)
5012 	    {
5013 		/*
5014 		 * Get ptr again, because u_save and/or showmatch() will have
5015 		 * released the line.  At the same time we let know that the
5016 		 * line will be changed.
5017 		 */
5018 		ptr = ml_get_buf(curbuf, curwin->w_cursor.lnum, TRUE);
5019 		if (cap->nchar == Ctrl_E || cap->nchar == Ctrl_Y)
5020 		{
5021 		  int c = ins_copychar(curwin->w_cursor.lnum
5022 					   + (cap->nchar == Ctrl_Y ? -1 : 1));
5023 		  if (c != NUL)
5024 		    ptr[curwin->w_cursor.col] = c;
5025 		}
5026 		else
5027 		    ptr[curwin->w_cursor.col] = cap->nchar;
5028 		if (p_sm && msg_silent == 0)
5029 		    showmatch(cap->nchar);
5030 		++curwin->w_cursor.col;
5031 	    }
5032 #ifdef FEAT_NETBEANS_INTG
5033 	    if (netbeans_active())
5034 	    {
5035 		colnr_T  start = (colnr_T)(curwin->w_cursor.col - cap->count1);
5036 
5037 		netbeans_removed(curbuf, curwin->w_cursor.lnum, start,
5038 							   (long)cap->count1);
5039 		netbeans_inserted(curbuf, curwin->w_cursor.lnum, start,
5040 					       &ptr[start], (int)cap->count1);
5041 	    }
5042 #endif
5043 
5044 	    // mark the buffer as changed and prepare for displaying
5045 	    changed_bytes(curwin->w_cursor.lnum,
5046 			       (colnr_T)(curwin->w_cursor.col - cap->count1));
5047 	}
5048 	--curwin->w_cursor.col;	    // cursor on the last replaced char
5049 	// if the character on the left of the current cursor is a multi-byte
5050 	// character, move two characters left
5051 	if (has_mbyte)
5052 	    mb_adjust_cursor();
5053 	curbuf->b_op_end = curwin->w_cursor;
5054 	curwin->w_set_curswant = TRUE;
5055 	set_last_insert(cap->nchar);
5056     }
5057 }
5058 
5059 /*
5060  * 'o': Exchange start and end of Visual area.
5061  * 'O': same, but in block mode exchange left and right corners.
5062  */
5063     static void
5064 v_swap_corners(int cmdchar)
5065 {
5066     pos_T	old_cursor;
5067     colnr_T	left, right;
5068 
5069     if (cmdchar == 'O' && VIsual_mode == Ctrl_V)
5070     {
5071 	old_cursor = curwin->w_cursor;
5072 	getvcols(curwin, &old_cursor, &VIsual, &left, &right);
5073 	curwin->w_cursor.lnum = VIsual.lnum;
5074 	coladvance(left);
5075 	VIsual = curwin->w_cursor;
5076 
5077 	curwin->w_cursor.lnum = old_cursor.lnum;
5078 	curwin->w_curswant = right;
5079 	// 'selection "exclusive" and cursor at right-bottom corner: move it
5080 	// right one column
5081 	if (old_cursor.lnum >= VIsual.lnum && *p_sel == 'e')
5082 	    ++curwin->w_curswant;
5083 	coladvance(curwin->w_curswant);
5084 	if (curwin->w_cursor.col == old_cursor.col
5085 		&& (!virtual_active()
5086 		    || curwin->w_cursor.coladd == old_cursor.coladd))
5087 	{
5088 	    curwin->w_cursor.lnum = VIsual.lnum;
5089 	    if (old_cursor.lnum <= VIsual.lnum && *p_sel == 'e')
5090 		++right;
5091 	    coladvance(right);
5092 	    VIsual = curwin->w_cursor;
5093 
5094 	    curwin->w_cursor.lnum = old_cursor.lnum;
5095 	    coladvance(left);
5096 	    curwin->w_curswant = left;
5097 	}
5098     }
5099     else
5100     {
5101 	old_cursor = curwin->w_cursor;
5102 	curwin->w_cursor = VIsual;
5103 	VIsual = old_cursor;
5104 	curwin->w_set_curswant = TRUE;
5105     }
5106 }
5107 
5108 /*
5109  * "R" (cap->arg is FALSE) and "gR" (cap->arg is TRUE).
5110  */
5111     static void
5112 nv_Replace(cmdarg_T *cap)
5113 {
5114     if (VIsual_active)		// "R" is replace lines
5115     {
5116 	cap->cmdchar = 'c';
5117 	cap->nchar = NUL;
5118 	VIsual_mode_orig = VIsual_mode; // remember original area for gv
5119 	VIsual_mode = 'V';
5120 	nv_operator(cap);
5121     }
5122     else if (!checkclearopq(cap->oap))
5123     {
5124 	if (!curbuf->b_p_ma)
5125 	    emsg(_(e_modifiable));
5126 	else
5127 	{
5128 	    if (virtual_active())
5129 		coladvance(getviscol());
5130 	    invoke_edit(cap, FALSE, cap->arg ? 'V' : 'R', FALSE);
5131 	}
5132     }
5133 }
5134 
5135 /*
5136  * "gr".
5137  */
5138     static void
5139 nv_vreplace(cmdarg_T *cap)
5140 {
5141     if (VIsual_active)
5142     {
5143 	cap->cmdchar = 'r';
5144 	cap->nchar = cap->extra_char;
5145 	nv_replace(cap);	// Do same as "r" in Visual mode for now
5146     }
5147     else if (!checkclearopq(cap->oap))
5148     {
5149 	if (!curbuf->b_p_ma)
5150 	    emsg(_(e_modifiable));
5151 	else
5152 	{
5153 	    if (cap->extra_char == Ctrl_V)	// get another character
5154 		cap->extra_char = get_literal();
5155 	    stuffcharReadbuff(cap->extra_char);
5156 	    stuffcharReadbuff(ESC);
5157 	    if (virtual_active())
5158 		coladvance(getviscol());
5159 	    invoke_edit(cap, TRUE, 'v', FALSE);
5160 	}
5161     }
5162 }
5163 
5164 /*
5165  * Swap case for "~" command, when it does not work like an operator.
5166  */
5167     static void
5168 n_swapchar(cmdarg_T *cap)
5169 {
5170     long	n;
5171     pos_T	startpos;
5172     int		did_change = 0;
5173 #ifdef FEAT_NETBEANS_INTG
5174     pos_T	pos;
5175     char_u	*ptr;
5176     int		count;
5177 #endif
5178 
5179     if (checkclearopq(cap->oap))
5180 	return;
5181 
5182     if (LINEEMPTY(curwin->w_cursor.lnum) && vim_strchr(p_ww, '~') == NULL)
5183     {
5184 	clearopbeep(cap->oap);
5185 	return;
5186     }
5187 
5188     prep_redo_cmd(cap);
5189 
5190     if (u_save_cursor() == FAIL)
5191 	return;
5192 
5193     startpos = curwin->w_cursor;
5194 #ifdef FEAT_NETBEANS_INTG
5195     pos = startpos;
5196 #endif
5197     for (n = cap->count1; n > 0; --n)
5198     {
5199 	did_change |= swapchar(cap->oap->op_type, &curwin->w_cursor);
5200 	inc_cursor();
5201 	if (gchar_cursor() == NUL)
5202 	{
5203 	    if (vim_strchr(p_ww, '~') != NULL
5204 		    && curwin->w_cursor.lnum < curbuf->b_ml.ml_line_count)
5205 	    {
5206 #ifdef FEAT_NETBEANS_INTG
5207 		if (netbeans_active())
5208 		{
5209 		    if (did_change)
5210 		    {
5211 			ptr = ml_get(pos.lnum);
5212 			count = (int)STRLEN(ptr) - pos.col;
5213 			netbeans_removed(curbuf, pos.lnum, pos.col,
5214 								 (long)count);
5215 			netbeans_inserted(curbuf, pos.lnum, pos.col,
5216 							&ptr[pos.col], count);
5217 		    }
5218 		    pos.col = 0;
5219 		    pos.lnum++;
5220 		}
5221 #endif
5222 		++curwin->w_cursor.lnum;
5223 		curwin->w_cursor.col = 0;
5224 		if (n > 1)
5225 		{
5226 		    if (u_savesub(curwin->w_cursor.lnum) == FAIL)
5227 			break;
5228 		    u_clearline();
5229 		}
5230 	    }
5231 	    else
5232 		break;
5233 	}
5234     }
5235 #ifdef FEAT_NETBEANS_INTG
5236     if (did_change && netbeans_active())
5237     {
5238 	ptr = ml_get(pos.lnum);
5239 	count = curwin->w_cursor.col - pos.col;
5240 	netbeans_removed(curbuf, pos.lnum, pos.col, (long)count);
5241 	netbeans_inserted(curbuf, pos.lnum, pos.col, &ptr[pos.col], count);
5242     }
5243 #endif
5244 
5245 
5246     check_cursor();
5247     curwin->w_set_curswant = TRUE;
5248     if (did_change)
5249     {
5250 	changed_lines(startpos.lnum, startpos.col, curwin->w_cursor.lnum + 1,
5251 									  0L);
5252 	curbuf->b_op_start = startpos;
5253 	curbuf->b_op_end = curwin->w_cursor;
5254 	if (curbuf->b_op_end.col > 0)
5255 	    --curbuf->b_op_end.col;
5256     }
5257 }
5258 
5259 /*
5260  * Move cursor to mark.
5261  */
5262     static void
5263 nv_cursormark(cmdarg_T *cap, int flag, pos_T *pos)
5264 {
5265     if (check_mark(pos) == FAIL)
5266 	clearop(cap->oap);
5267     else
5268     {
5269 	if (cap->cmdchar == '\''
5270 		|| cap->cmdchar == '`'
5271 		|| cap->cmdchar == '['
5272 		|| cap->cmdchar == ']')
5273 	    setpcmark();
5274 	curwin->w_cursor = *pos;
5275 	if (flag)
5276 	    beginline(BL_WHITE | BL_FIX);
5277 	else
5278 	    check_cursor();
5279     }
5280     cap->oap->motion_type = flag ? MLINE : MCHAR;
5281     if (cap->cmdchar == '`')
5282 	cap->oap->use_reg_one = TRUE;
5283     cap->oap->inclusive = FALSE;		// ignored if not MCHAR
5284     curwin->w_set_curswant = TRUE;
5285 }
5286 
5287 /*
5288  * Handle commands that are operators in Visual mode.
5289  */
5290     static void
5291 v_visop(cmdarg_T *cap)
5292 {
5293     static char_u trans[] = "YyDdCcxdXdAAIIrr";
5294 
5295     // Uppercase means linewise, except in block mode, then "D" deletes till
5296     // the end of the line, and "C" replaces till EOL
5297     if (isupper(cap->cmdchar))
5298     {
5299 	if (VIsual_mode != Ctrl_V)
5300 	{
5301 	    VIsual_mode_orig = VIsual_mode;
5302 	    VIsual_mode = 'V';
5303 	}
5304 	else if (cap->cmdchar == 'C' || cap->cmdchar == 'D')
5305 	    curwin->w_curswant = MAXCOL;
5306     }
5307     cap->cmdchar = *(vim_strchr(trans, cap->cmdchar) + 1);
5308     nv_operator(cap);
5309 }
5310 
5311 /*
5312  * "s" and "S" commands.
5313  */
5314     static void
5315 nv_subst(cmdarg_T *cap)
5316 {
5317 #ifdef FEAT_TERMINAL
5318     // When showing output of term_dumpdiff() swap the top and botom.
5319     if (term_swap_diff() == OK)
5320 	return;
5321 #endif
5322 #ifdef FEAT_JOB_CHANNEL
5323     if (bt_prompt(curbuf) && !prompt_curpos_editable())
5324     {
5325 	clearopbeep(cap->oap);
5326 	return;
5327     }
5328 #endif
5329     if (VIsual_active)	// "vs" and "vS" are the same as "vc"
5330     {
5331 	if (cap->cmdchar == 'S')
5332 	{
5333 	    VIsual_mode_orig = VIsual_mode;
5334 	    VIsual_mode = 'V';
5335 	}
5336 	cap->cmdchar = 'c';
5337 	nv_operator(cap);
5338     }
5339     else
5340 	nv_optrans(cap);
5341 }
5342 
5343 /*
5344  * Abbreviated commands.
5345  */
5346     static void
5347 nv_abbrev(cmdarg_T *cap)
5348 {
5349     if (cap->cmdchar == K_DEL || cap->cmdchar == K_KDEL)
5350 	cap->cmdchar = 'x';		// DEL key behaves like 'x'
5351 
5352     // in Visual mode these commands are operators
5353     if (VIsual_active)
5354 	v_visop(cap);
5355     else
5356 	nv_optrans(cap);
5357 }
5358 
5359 /*
5360  * Translate a command into another command.
5361  */
5362     static void
5363 nv_optrans(cmdarg_T *cap)
5364 {
5365     static char_u *(ar[8]) = {(char_u *)"dl", (char_u *)"dh",
5366 			      (char_u *)"d$", (char_u *)"c$",
5367 			      (char_u *)"cl", (char_u *)"cc",
5368 			      (char_u *)"yy", (char_u *)":s\r"};
5369     static char_u *str = (char_u *)"xXDCsSY&";
5370 
5371     if (!checkclearopq(cap->oap))
5372     {
5373 	// In Vi "2D" doesn't delete the next line.  Can't translate it
5374 	// either, because "2." should also not use the count.
5375 	if (cap->cmdchar == 'D' && vim_strchr(p_cpo, CPO_HASH) != NULL)
5376 	{
5377 	    cap->oap->start = curwin->w_cursor;
5378 	    cap->oap->op_type = OP_DELETE;
5379 #ifdef FEAT_EVAL
5380 	    set_op_var(OP_DELETE);
5381 #endif
5382 	    cap->count1 = 1;
5383 	    nv_dollar(cap);
5384 	    finish_op = TRUE;
5385 	    ResetRedobuff();
5386 	    AppendCharToRedobuff('D');
5387 	}
5388 	else
5389 	{
5390 	    if (cap->count0)
5391 		stuffnumReadbuff(cap->count0);
5392 	    stuffReadbuff(ar[(int)(vim_strchr(str, cap->cmdchar) - str)]);
5393 	}
5394     }
5395     cap->opcount = 0;
5396 }
5397 
5398 /*
5399  * "'" and "`" commands.  Also for "g'" and "g`".
5400  * cap->arg is TRUE for "'" and "g'".
5401  */
5402     static void
5403 nv_gomark(cmdarg_T *cap)
5404 {
5405     pos_T	*pos;
5406     int		c;
5407 #ifdef FEAT_FOLDING
5408     pos_T	old_cursor = curwin->w_cursor;
5409     int		old_KeyTyped = KeyTyped;    // getting file may reset it
5410 #endif
5411 
5412     if (cap->cmdchar == 'g')
5413 	c = cap->extra_char;
5414     else
5415 	c = cap->nchar;
5416     pos = getmark(c, (cap->oap->op_type == OP_NOP));
5417     if (pos == (pos_T *)-1)	    // jumped to other file
5418     {
5419 	if (cap->arg)
5420 	{
5421 	    check_cursor_lnum();
5422 	    beginline(BL_WHITE | BL_FIX);
5423 	}
5424 	else
5425 	    check_cursor();
5426     }
5427     else
5428 	nv_cursormark(cap, cap->arg, pos);
5429 
5430     // May need to clear the coladd that a mark includes.
5431     if (!virtual_active())
5432 	curwin->w_cursor.coladd = 0;
5433     check_cursor_col();
5434 #ifdef FEAT_FOLDING
5435     if (cap->oap->op_type == OP_NOP
5436 	    && pos != NULL
5437 	    && (pos == (pos_T *)-1 || !EQUAL_POS(old_cursor, *pos))
5438 	    && (fdo_flags & FDO_MARK)
5439 	    && old_KeyTyped)
5440 	foldOpenCursor();
5441 #endif
5442 }
5443 
5444 /*
5445  * Handle CTRL-O, CTRL-I, "g;" and "g," commands.
5446  */
5447     static void
5448 nv_pcmark(cmdarg_T *cap)
5449 {
5450 #ifdef FEAT_JUMPLIST
5451     pos_T	*pos;
5452 # ifdef FEAT_FOLDING
5453     linenr_T	lnum = curwin->w_cursor.lnum;
5454     int		old_KeyTyped = KeyTyped;    // getting file may reset it
5455 # endif
5456 
5457     if (!checkclearopq(cap->oap))
5458     {
5459 	if (cap->cmdchar == 'g')
5460 	    pos = movechangelist((int)cap->count1);
5461 	else
5462 	    pos = movemark((int)cap->count1);
5463 	if (pos == (pos_T *)-1)		// jump to other file
5464 	{
5465 	    curwin->w_set_curswant = TRUE;
5466 	    check_cursor();
5467 	}
5468 	else if (pos != NULL)		    // can jump
5469 	    nv_cursormark(cap, FALSE, pos);
5470 	else if (cap->cmdchar == 'g')
5471 	{
5472 	    if (curbuf->b_changelistlen == 0)
5473 		emsg(_("E664: changelist is empty"));
5474 	    else if (cap->count1 < 0)
5475 		emsg(_("E662: At start of changelist"));
5476 	    else
5477 		emsg(_("E663: At end of changelist"));
5478 	}
5479 	else
5480 	    clearopbeep(cap->oap);
5481 # ifdef FEAT_FOLDING
5482 	if (cap->oap->op_type == OP_NOP
5483 		&& (pos == (pos_T *)-1 || lnum != curwin->w_cursor.lnum)
5484 		&& (fdo_flags & FDO_MARK)
5485 		&& old_KeyTyped)
5486 	    foldOpenCursor();
5487 # endif
5488     }
5489 #else
5490     clearopbeep(cap->oap);
5491 #endif
5492 }
5493 
5494 /*
5495  * Handle '"' command.
5496  */
5497     static void
5498 nv_regname(cmdarg_T *cap)
5499 {
5500     if (checkclearop(cap->oap))
5501 	return;
5502 #ifdef FEAT_EVAL
5503     if (cap->nchar == '=')
5504 	cap->nchar = get_expr_register();
5505 #endif
5506     if (cap->nchar != NUL && valid_yank_reg(cap->nchar, FALSE))
5507     {
5508 	cap->oap->regname = cap->nchar;
5509 	cap->opcount = cap->count0;	// remember count before '"'
5510 #ifdef FEAT_EVAL
5511 	set_reg_var(cap->oap->regname);
5512 #endif
5513     }
5514     else
5515 	clearopbeep(cap->oap);
5516 }
5517 
5518 /*
5519  * Handle "v", "V" and "CTRL-V" commands.
5520  * Also for "gh", "gH" and "g^H" commands: Always start Select mode, cap->arg
5521  * is TRUE.
5522  * Handle CTRL-Q just like CTRL-V.
5523  */
5524     static void
5525 nv_visual(cmdarg_T *cap)
5526 {
5527     if (cap->cmdchar == Ctrl_Q)
5528 	cap->cmdchar = Ctrl_V;
5529 
5530     // 'v', 'V' and CTRL-V can be used while an operator is pending to make it
5531     // characterwise, linewise, or blockwise.
5532     if (cap->oap->op_type != OP_NOP)
5533     {
5534 	motion_force = cap->oap->motion_force = cap->cmdchar;
5535 	finish_op = FALSE;	// operator doesn't finish now but later
5536 	return;
5537     }
5538 
5539     VIsual_select = cap->arg;
5540     if (VIsual_active)	    // change Visual mode
5541     {
5542 	if (VIsual_mode == cap->cmdchar)    // stop visual mode
5543 	    end_visual_mode();
5544 	else				    // toggle char/block mode
5545 	{				    //	   or char/line mode
5546 	    VIsual_mode = cap->cmdchar;
5547 	    showmode();
5548 	}
5549 	redraw_curbuf_later(INVERTED);	    // update the inversion
5550     }
5551     else		    // start Visual mode
5552     {
5553 	check_visual_highlight();
5554 	if (cap->count0 > 0 && resel_VIsual_mode != NUL)
5555 	{
5556 	    // use previously selected part
5557 	    VIsual = curwin->w_cursor;
5558 
5559 	    VIsual_active = TRUE;
5560 	    VIsual_reselect = TRUE;
5561 	    if (!cap->arg)
5562 		// start Select mode when 'selectmode' contains "cmd"
5563 		may_start_select('c');
5564 	    setmouse();
5565 	    if (p_smd && msg_silent == 0)
5566 		redraw_cmdline = TRUE;	    // show visual mode later
5567 	    /*
5568 	     * For V and ^V, we multiply the number of lines even if there
5569 	     * was only one -- webb
5570 	     */
5571 	    if (resel_VIsual_mode != 'v' || resel_VIsual_line_count > 1)
5572 	    {
5573 		curwin->w_cursor.lnum +=
5574 				    resel_VIsual_line_count * cap->count0 - 1;
5575 		if (curwin->w_cursor.lnum > curbuf->b_ml.ml_line_count)
5576 		    curwin->w_cursor.lnum = curbuf->b_ml.ml_line_count;
5577 	    }
5578 	    VIsual_mode = resel_VIsual_mode;
5579 	    if (VIsual_mode == 'v')
5580 	    {
5581 		if (resel_VIsual_line_count <= 1)
5582 		{
5583 		    validate_virtcol();
5584 		    curwin->w_curswant = curwin->w_virtcol
5585 					+ resel_VIsual_vcol * cap->count0 - 1;
5586 		}
5587 		else
5588 		    curwin->w_curswant = resel_VIsual_vcol;
5589 		coladvance(curwin->w_curswant);
5590 	    }
5591 	    if (resel_VIsual_vcol == MAXCOL)
5592 	    {
5593 		curwin->w_curswant = MAXCOL;
5594 		coladvance((colnr_T)MAXCOL);
5595 	    }
5596 	    else if (VIsual_mode == Ctrl_V)
5597 	    {
5598 		validate_virtcol();
5599 		curwin->w_curswant = curwin->w_virtcol
5600 					+ resel_VIsual_vcol * cap->count0 - 1;
5601 		coladvance(curwin->w_curswant);
5602 	    }
5603 	    else
5604 		curwin->w_set_curswant = TRUE;
5605 	    redraw_curbuf_later(INVERTED);	// show the inversion
5606 	}
5607 	else
5608 	{
5609 	    if (!cap->arg)
5610 		// start Select mode when 'selectmode' contains "cmd"
5611 		may_start_select('c');
5612 	    n_start_visual_mode(cap->cmdchar);
5613 	    if (VIsual_mode != 'V' && *p_sel == 'e')
5614 		++cap->count1;  // include one more char
5615 	    if (cap->count0 > 0 && --cap->count1 > 0)
5616 	    {
5617 		// With a count select that many characters or lines.
5618 		if (VIsual_mode == 'v' || VIsual_mode == Ctrl_V)
5619 		    nv_right(cap);
5620 		else if (VIsual_mode == 'V')
5621 		    nv_down(cap);
5622 	    }
5623 	}
5624     }
5625 }
5626 
5627 /*
5628  * Start selection for Shift-movement keys.
5629  */
5630     void
5631 start_selection(void)
5632 {
5633     // if 'selectmode' contains "key", start Select mode
5634     may_start_select('k');
5635     n_start_visual_mode('v');
5636 }
5637 
5638 /*
5639  * Start Select mode, if "c" is in 'selectmode' and not in a mapping or menu.
5640  */
5641     void
5642 may_start_select(int c)
5643 {
5644     VIsual_select = (stuff_empty() && typebuf_typed()
5645 		    && (vim_strchr(p_slm, c) != NULL));
5646 }
5647 
5648 /*
5649  * Start Visual mode "c".
5650  * Should set VIsual_select before calling this.
5651  */
5652     static void
5653 n_start_visual_mode(int c)
5654 {
5655 #ifdef FEAT_CONCEAL
5656     // Check for redraw before changing the state.
5657     conceal_check_cursor_line();
5658 #endif
5659 
5660     VIsual_mode = c;
5661     VIsual_active = TRUE;
5662     VIsual_reselect = TRUE;
5663 
5664     // Corner case: the 0 position in a tab may change when going into
5665     // virtualedit.  Recalculate curwin->w_cursor to avoid bad highlighting.
5666     if (c == Ctrl_V && (ve_flags & VE_BLOCK) && gchar_cursor() == TAB)
5667     {
5668 	validate_virtcol();
5669 	coladvance(curwin->w_virtcol);
5670     }
5671     VIsual = curwin->w_cursor;
5672 
5673 #ifdef FEAT_FOLDING
5674     foldAdjustVisual();
5675 #endif
5676 
5677     setmouse();
5678 #ifdef FEAT_CONCEAL
5679     // Check for redraw after changing the state.
5680     conceal_check_cursor_line();
5681 #endif
5682 
5683     if (p_smd && msg_silent == 0)
5684 	redraw_cmdline = TRUE;	// show visual mode later
5685 #ifdef FEAT_CLIPBOARD
5686     // Make sure the clipboard gets updated.  Needed because start and
5687     // end may still be the same, and the selection needs to be owned
5688     clip_star.vmode = NUL;
5689 #endif
5690 
5691     // Only need to redraw this line, unless still need to redraw an old
5692     // Visual area (when 'lazyredraw' is set).
5693     if (curwin->w_redr_type < INVERTED)
5694     {
5695 	curwin->w_old_cursor_lnum = curwin->w_cursor.lnum;
5696 	curwin->w_old_visual_lnum = curwin->w_cursor.lnum;
5697     }
5698 }
5699 
5700 
5701 /*
5702  * CTRL-W: Window commands
5703  */
5704     static void
5705 nv_window(cmdarg_T *cap)
5706 {
5707     if (cap->nchar == ':')
5708     {
5709 	// "CTRL-W :" is the same as typing ":"; useful in a terminal window
5710 	cap->cmdchar = ':';
5711 	cap->nchar = NUL;
5712 	nv_colon(cap);
5713     }
5714     else if (!checkclearop(cap->oap))
5715 	do_window(cap->nchar, cap->count0, NUL); // everything is in window.c
5716 }
5717 
5718 /*
5719  * CTRL-Z: Suspend
5720  */
5721     static void
5722 nv_suspend(cmdarg_T *cap)
5723 {
5724     clearop(cap->oap);
5725     if (VIsual_active)
5726 	end_visual_mode();		// stop Visual mode
5727     do_cmdline_cmd((char_u *)"st");
5728 }
5729 
5730 /*
5731  * Commands starting with "g".
5732  */
5733     static void
5734 nv_g_cmd(cmdarg_T *cap)
5735 {
5736     oparg_T	*oap = cap->oap;
5737     pos_T	tpos;
5738     int		i;
5739     int		flag = FALSE;
5740 
5741     switch (cap->nchar)
5742     {
5743     case Ctrl_A:
5744     case Ctrl_X:
5745 #ifdef MEM_PROFILE
5746     /*
5747      * "g^A": dump log of used memory.
5748      */
5749 	if (!VIsual_active && cap->nchar == Ctrl_A)
5750 	    vim_mem_profile_dump();
5751 	else
5752 #endif
5753     /*
5754      * "g^A/g^X": sequentially increment visually selected region
5755      */
5756 	     if (VIsual_active)
5757 	{
5758 	    cap->arg = TRUE;
5759 	    cap->cmdchar = cap->nchar;
5760 	    cap->nchar = NUL;
5761 	    nv_addsub(cap);
5762 	}
5763 	else
5764 	    clearopbeep(oap);
5765 	break;
5766 
5767     /*
5768      * "gR": Enter virtual replace mode.
5769      */
5770     case 'R':
5771 	cap->arg = TRUE;
5772 	nv_Replace(cap);
5773 	break;
5774 
5775     case 'r':
5776 	nv_vreplace(cap);
5777 	break;
5778 
5779     case '&':
5780 	do_cmdline_cmd((char_u *)"%s//~/&");
5781 	break;
5782 
5783     /*
5784      * "gv": Reselect the previous Visual area.  If Visual already active,
5785      *	     exchange previous and current Visual area.
5786      */
5787     case 'v':
5788 	if (checkclearop(oap))
5789 	    break;
5790 
5791 	if (	   curbuf->b_visual.vi_start.lnum == 0
5792 		|| curbuf->b_visual.vi_start.lnum > curbuf->b_ml.ml_line_count
5793 		|| curbuf->b_visual.vi_end.lnum == 0)
5794 	    beep_flush();
5795 	else
5796 	{
5797 	    // set w_cursor to the start of the Visual area, tpos to the end
5798 	    if (VIsual_active)
5799 	    {
5800 		i = VIsual_mode;
5801 		VIsual_mode = curbuf->b_visual.vi_mode;
5802 		curbuf->b_visual.vi_mode = i;
5803 # ifdef FEAT_EVAL
5804 		curbuf->b_visual_mode_eval = i;
5805 # endif
5806 		i = curwin->w_curswant;
5807 		curwin->w_curswant = curbuf->b_visual.vi_curswant;
5808 		curbuf->b_visual.vi_curswant = i;
5809 
5810 		tpos = curbuf->b_visual.vi_end;
5811 		curbuf->b_visual.vi_end = curwin->w_cursor;
5812 		curwin->w_cursor = curbuf->b_visual.vi_start;
5813 		curbuf->b_visual.vi_start = VIsual;
5814 	    }
5815 	    else
5816 	    {
5817 		VIsual_mode = curbuf->b_visual.vi_mode;
5818 		curwin->w_curswant = curbuf->b_visual.vi_curswant;
5819 		tpos = curbuf->b_visual.vi_end;
5820 		curwin->w_cursor = curbuf->b_visual.vi_start;
5821 	    }
5822 
5823 	    VIsual_active = TRUE;
5824 	    VIsual_reselect = TRUE;
5825 
5826 	    // Set Visual to the start and w_cursor to the end of the Visual
5827 	    // area.  Make sure they are on an existing character.
5828 	    check_cursor();
5829 	    VIsual = curwin->w_cursor;
5830 	    curwin->w_cursor = tpos;
5831 	    check_cursor();
5832 	    update_topline();
5833 	    /*
5834 	     * When called from normal "g" command: start Select mode when
5835 	     * 'selectmode' contains "cmd".  When called for K_SELECT, always
5836 	     * start Select mode.
5837 	     */
5838 	    if (cap->arg)
5839 		VIsual_select = TRUE;
5840 	    else
5841 		may_start_select('c');
5842 	    setmouse();
5843 #ifdef FEAT_CLIPBOARD
5844 	    // Make sure the clipboard gets updated.  Needed because start and
5845 	    // end are still the same, and the selection needs to be owned
5846 	    clip_star.vmode = NUL;
5847 #endif
5848 	    redraw_curbuf_later(INVERTED);
5849 	    showmode();
5850 	}
5851 	break;
5852     /*
5853      * "gV": Don't reselect the previous Visual area after a Select mode
5854      *	     mapping of menu.
5855      */
5856     case 'V':
5857 	VIsual_reselect = FALSE;
5858 	break;
5859 
5860     /*
5861      * "gh":  start Select mode.
5862      * "gH":  start Select line mode.
5863      * "g^H": start Select block mode.
5864      */
5865     case K_BS:
5866 	cap->nchar = Ctrl_H;
5867 	// FALLTHROUGH
5868     case 'h':
5869     case 'H':
5870     case Ctrl_H:
5871 # ifdef EBCDIC
5872 	// EBCDIC: 'v'-'h' != '^v'-'^h'
5873 	if (cap->nchar == Ctrl_H)
5874 	    cap->cmdchar = Ctrl_V;
5875 	else
5876 # endif
5877 	cap->cmdchar = cap->nchar + ('v' - 'h');
5878 	cap->arg = TRUE;
5879 	nv_visual(cap);
5880 	break;
5881 
5882     // "gn", "gN" visually select next/previous search match
5883     // "gn" selects next match
5884     // "gN" selects previous match
5885     case 'N':
5886     case 'n':
5887 	if (!current_search(cap->count1, cap->nchar == 'n'))
5888 	    clearopbeep(oap);
5889 	break;
5890 
5891     /*
5892      * "gj" and "gk" two new funny movement keys -- up and down
5893      * movement based on *screen* line rather than *file* line.
5894      */
5895     case 'j':
5896     case K_DOWN:
5897 	// with 'nowrap' it works just like the normal "j" command; also when
5898 	// in a closed fold
5899 	if (!curwin->w_p_wrap
5900 #ifdef FEAT_FOLDING
5901 		|| hasFolding(curwin->w_cursor.lnum, NULL, NULL)
5902 #endif
5903 		)
5904 	{
5905 	    oap->motion_type = MLINE;
5906 	    i = cursor_down(cap->count1, oap->op_type == OP_NOP);
5907 	}
5908 	else
5909 	    i = nv_screengo(oap, FORWARD, cap->count1);
5910 	if (i == FAIL)
5911 	    clearopbeep(oap);
5912 	break;
5913 
5914     case 'k':
5915     case K_UP:
5916 	// with 'nowrap' it works just like the normal "k" command; also when
5917 	// in a closed fold
5918 	if (!curwin->w_p_wrap
5919 #ifdef FEAT_FOLDING
5920 		|| hasFolding(curwin->w_cursor.lnum, NULL, NULL)
5921 #endif
5922 	   )
5923 	{
5924 	    oap->motion_type = MLINE;
5925 	    i = cursor_up(cap->count1, oap->op_type == OP_NOP);
5926 	}
5927 	else
5928 	    i = nv_screengo(oap, BACKWARD, cap->count1);
5929 	if (i == FAIL)
5930 	    clearopbeep(oap);
5931 	break;
5932 
5933     /*
5934      * "gJ": join two lines without inserting a space.
5935      */
5936     case 'J':
5937 	nv_join(cap);
5938 	break;
5939 
5940     /*
5941      * "g0", "g^" and "g$": Like "0", "^" and "$" but for screen lines.
5942      * "gm": middle of "g0" and "g$".
5943      */
5944     case '^':
5945 	flag = TRUE;
5946 	// FALLTHROUGH
5947 
5948     case '0':
5949     case 'm':
5950     case K_HOME:
5951     case K_KHOME:
5952 	oap->motion_type = MCHAR;
5953 	oap->inclusive = FALSE;
5954 	if (curwin->w_p_wrap && curwin->w_width != 0)
5955 	{
5956 	    int		width1 = curwin->w_width - curwin_col_off();
5957 	    int		width2 = width1 + curwin_col_off2();
5958 
5959 	    validate_virtcol();
5960 	    i = 0;
5961 	    if (curwin->w_virtcol >= (colnr_T)width1 && width2 > 0)
5962 		i = (curwin->w_virtcol - width1) / width2 * width2 + width1;
5963 	}
5964 	else
5965 	    i = curwin->w_leftcol;
5966 	// Go to the middle of the screen line.  When 'number' or
5967 	// 'relativenumber' is on and lines are wrapping the middle can be more
5968 	// to the left.
5969 	if (cap->nchar == 'm')
5970 	    i += (curwin->w_width - curwin_col_off()
5971 		    + ((curwin->w_p_wrap && i > 0)
5972 			? curwin_col_off2() : 0)) / 2;
5973 	coladvance((colnr_T)i);
5974 	if (flag)
5975 	{
5976 	    do
5977 		i = gchar_cursor();
5978 	    while (VIM_ISWHITE(i) && oneright() == OK);
5979 	    curwin->w_valid &= ~VALID_WCOL;
5980 	}
5981 	curwin->w_set_curswant = TRUE;
5982 	break;
5983 
5984     case 'M':
5985 	{
5986 	    char_u  *ptr = ml_get_curline();
5987 
5988 	    oap->motion_type = MCHAR;
5989 	    oap->inclusive = FALSE;
5990 	    if (has_mbyte)
5991 		i = mb_string2cells(ptr, (int)STRLEN(ptr));
5992 	    else
5993 		i = (int)STRLEN(ptr);
5994 	    if (cap->count0 > 0 && cap->count0 <= 100)
5995 		coladvance((colnr_T)(i * cap->count0 / 100));
5996 	    else
5997 		coladvance((colnr_T)(i / 2));
5998 	    curwin->w_set_curswant = TRUE;
5999 	}
6000 	break;
6001 
6002     case '_':
6003 	// "g_": to the last non-blank character in the line or <count> lines
6004 	// downward.
6005 	cap->oap->motion_type = MCHAR;
6006 	cap->oap->inclusive = TRUE;
6007 	curwin->w_curswant = MAXCOL;
6008 	if (cursor_down((long)(cap->count1 - 1),
6009 					 cap->oap->op_type == OP_NOP) == FAIL)
6010 	    clearopbeep(cap->oap);
6011 	else
6012 	{
6013 	    char_u  *ptr = ml_get_curline();
6014 
6015 	    // In Visual mode we may end up after the line.
6016 	    if (curwin->w_cursor.col > 0 && ptr[curwin->w_cursor.col] == NUL)
6017 		--curwin->w_cursor.col;
6018 
6019 	    // Decrease the cursor column until it's on a non-blank.
6020 	    while (curwin->w_cursor.col > 0
6021 				    && VIM_ISWHITE(ptr[curwin->w_cursor.col]))
6022 		--curwin->w_cursor.col;
6023 	    curwin->w_set_curswant = TRUE;
6024 	    adjust_for_sel(cap);
6025 	}
6026 	break;
6027 
6028     case '$':
6029     case K_END:
6030     case K_KEND:
6031 	{
6032 	    int col_off = curwin_col_off();
6033 
6034 	    oap->motion_type = MCHAR;
6035 	    oap->inclusive = TRUE;
6036 	    if (curwin->w_p_wrap && curwin->w_width != 0)
6037 	    {
6038 		curwin->w_curswant = MAXCOL;    // so we stay at the end
6039 		if (cap->count1 == 1)
6040 		{
6041 		    int		width1 = curwin->w_width - col_off;
6042 		    int		width2 = width1 + curwin_col_off2();
6043 
6044 		    validate_virtcol();
6045 		    i = width1 - 1;
6046 		    if (curwin->w_virtcol >= (colnr_T)width1)
6047 			i += ((curwin->w_virtcol - width1) / width2 + 1)
6048 								     * width2;
6049 		    coladvance((colnr_T)i);
6050 
6051 		    // Make sure we stick in this column.
6052 		    validate_virtcol();
6053 		    curwin->w_curswant = curwin->w_virtcol;
6054 		    curwin->w_set_curswant = FALSE;
6055 		    if (curwin->w_cursor.col > 0 && curwin->w_p_wrap)
6056 		    {
6057 			/*
6058 			 * Check for landing on a character that got split at
6059 			 * the end of the line.  We do not want to advance to
6060 			 * the next screen line.
6061 			 */
6062 			if (curwin->w_virtcol > (colnr_T)i)
6063 			    --curwin->w_cursor.col;
6064 		    }
6065 		}
6066 		else if (nv_screengo(oap, FORWARD, cap->count1 - 1) == FAIL)
6067 		    clearopbeep(oap);
6068 	    }
6069 	    else
6070 	    {
6071 		if (cap->count1 > 1)
6072 		    // if it fails, let the cursor still move to the last char
6073 		    (void)cursor_down(cap->count1 - 1, FALSE);
6074 
6075 		i = curwin->w_leftcol + curwin->w_width - col_off - 1;
6076 		coladvance((colnr_T)i);
6077 
6078 		// Make sure we stick in this column.
6079 		validate_virtcol();
6080 		curwin->w_curswant = curwin->w_virtcol;
6081 		curwin->w_set_curswant = FALSE;
6082 	    }
6083 	}
6084 	break;
6085 
6086     /*
6087      * "g*" and "g#", like "*" and "#" but without using "\<" and "\>"
6088      */
6089     case '*':
6090     case '#':
6091 #if POUND != '#'
6092     case POUND:		// pound sign (sometimes equal to '#')
6093 #endif
6094     case Ctrl_RSB:		// :tag or :tselect for current identifier
6095     case ']':			// :tselect for current identifier
6096 	nv_ident(cap);
6097 	break;
6098 
6099     /*
6100      * ge and gE: go back to end of word
6101      */
6102     case 'e':
6103     case 'E':
6104 	oap->motion_type = MCHAR;
6105 	curwin->w_set_curswant = TRUE;
6106 	oap->inclusive = TRUE;
6107 	if (bckend_word(cap->count1, cap->nchar == 'E', FALSE) == FAIL)
6108 	    clearopbeep(oap);
6109 	break;
6110 
6111     /*
6112      * "g CTRL-G": display info about cursor position
6113      */
6114     case Ctrl_G:
6115 	cursor_pos_info(NULL);
6116 	break;
6117 
6118     /*
6119      * "gi": start Insert at the last position.
6120      */
6121     case 'i':
6122 	if (curbuf->b_last_insert.lnum != 0)
6123 	{
6124 	    curwin->w_cursor = curbuf->b_last_insert;
6125 	    check_cursor_lnum();
6126 	    i = (int)STRLEN(ml_get_curline());
6127 	    if (curwin->w_cursor.col > (colnr_T)i)
6128 	    {
6129 		if (virtual_active())
6130 		    curwin->w_cursor.coladd += curwin->w_cursor.col - i;
6131 		curwin->w_cursor.col = i;
6132 	    }
6133 	}
6134 	cap->cmdchar = 'i';
6135 	nv_edit(cap);
6136 	break;
6137 
6138     /*
6139      * "gI": Start insert in column 1.
6140      */
6141     case 'I':
6142 	beginline(0);
6143 	if (!checkclearopq(oap))
6144 	    invoke_edit(cap, FALSE, 'g', FALSE);
6145 	break;
6146 
6147 #ifdef FEAT_SEARCHPATH
6148     /*
6149      * "gf": goto file, edit file under cursor
6150      * "]f" and "[f": can also be used.
6151      */
6152     case 'f':
6153     case 'F':
6154 	nv_gotofile(cap);
6155 	break;
6156 #endif
6157 
6158 	// "g'm" and "g`m": jump to mark without setting pcmark
6159     case '\'':
6160 	cap->arg = TRUE;
6161 	// FALLTHROUGH
6162     case '`':
6163 	nv_gomark(cap);
6164 	break;
6165 
6166     /*
6167      * "gs": Goto sleep.
6168      */
6169     case 's':
6170 	do_sleep(cap->count1 * 1000L);
6171 	break;
6172 
6173     /*
6174      * "ga": Display the ascii value of the character under the
6175      * cursor.	It is displayed in decimal, hex, and octal. -- webb
6176      */
6177     case 'a':
6178 	do_ascii(NULL);
6179 	break;
6180 
6181     /*
6182      * "g8": Display the bytes used for the UTF-8 character under the
6183      * cursor.	It is displayed in hex.
6184      * "8g8" finds illegal byte sequence.
6185      */
6186     case '8':
6187 	if (cap->count0 == 8)
6188 	    utf_find_illegal();
6189 	else
6190 	    show_utf8();
6191 	break;
6192 
6193     // "g<": show scrollback text
6194     case '<':
6195 	show_sb_text();
6196 	break;
6197 
6198     /*
6199      * "gg": Goto the first line in file.  With a count it goes to
6200      * that line number like for "G". -- webb
6201      */
6202     case 'g':
6203 	cap->arg = FALSE;
6204 	nv_goto(cap);
6205 	break;
6206 
6207     /*
6208      *	 Two-character operators:
6209      *	 "gq"	    Format text
6210      *	 "gw"	    Format text and keep cursor position
6211      *	 "g~"	    Toggle the case of the text.
6212      *	 "gu"	    Change text to lower case.
6213      *	 "gU"	    Change text to upper case.
6214      *   "g?"	    rot13 encoding
6215      *   "g@"	    call 'operatorfunc'
6216      */
6217     case 'q':
6218     case 'w':
6219 	oap->cursor_start = curwin->w_cursor;
6220 	// FALLTHROUGH
6221     case '~':
6222     case 'u':
6223     case 'U':
6224     case '?':
6225     case '@':
6226 	nv_operator(cap);
6227 	break;
6228 
6229     /*
6230      * "gd": Find first occurrence of pattern under the cursor in the
6231      *	 current function
6232      * "gD": idem, but in the current file.
6233      */
6234     case 'd':
6235     case 'D':
6236 	nv_gd(oap, cap->nchar, (int)cap->count0);
6237 	break;
6238 
6239     /*
6240      * g<*Mouse> : <C-*mouse>
6241      */
6242     case K_MIDDLEMOUSE:
6243     case K_MIDDLEDRAG:
6244     case K_MIDDLERELEASE:
6245     case K_LEFTMOUSE:
6246     case K_LEFTDRAG:
6247     case K_LEFTRELEASE:
6248     case K_MOUSEMOVE:
6249     case K_RIGHTMOUSE:
6250     case K_RIGHTDRAG:
6251     case K_RIGHTRELEASE:
6252     case K_X1MOUSE:
6253     case K_X1DRAG:
6254     case K_X1RELEASE:
6255     case K_X2MOUSE:
6256     case K_X2DRAG:
6257     case K_X2RELEASE:
6258 	mod_mask = MOD_MASK_CTRL;
6259 	(void)do_mouse(oap, cap->nchar, BACKWARD, cap->count1, 0);
6260 	break;
6261 
6262     case K_IGNORE:
6263 	break;
6264 
6265     /*
6266      * "gP" and "gp": same as "P" and "p" but leave cursor just after new text
6267      */
6268     case 'p':
6269     case 'P':
6270 	nv_put(cap);
6271 	break;
6272 
6273 #ifdef FEAT_BYTEOFF
6274     // "go": goto byte count from start of buffer
6275     case 'o':
6276 	goto_byte(cap->count0);
6277 	break;
6278 #endif
6279 
6280     // "gQ": improved Ex mode
6281     case 'Q':
6282 	if (text_locked())
6283 	{
6284 	    clearopbeep(cap->oap);
6285 	    text_locked_msg();
6286 	    break;
6287 	}
6288 
6289 	if (!checkclearopq(oap))
6290 	    do_exmode(TRUE);
6291 	break;
6292 
6293 #ifdef FEAT_JUMPLIST
6294     case ',':
6295 	nv_pcmark(cap);
6296 	break;
6297 
6298     case ';':
6299 	cap->count1 = -cap->count1;
6300 	nv_pcmark(cap);
6301 	break;
6302 #endif
6303 
6304     case 't':
6305 	if (!checkclearop(oap))
6306 	    goto_tabpage((int)cap->count0);
6307 	break;
6308     case 'T':
6309 	if (!checkclearop(oap))
6310 	    goto_tabpage(-(int)cap->count1);
6311 	break;
6312 
6313     case '+':
6314     case '-': // "g+" and "g-": undo or redo along the timeline
6315 	if (!checkclearopq(oap))
6316 	    undo_time(cap->nchar == '-' ? -cap->count1 : cap->count1,
6317 							 FALSE, FALSE, FALSE);
6318 	break;
6319 
6320     default:
6321 	clearopbeep(oap);
6322 	break;
6323     }
6324 }
6325 
6326 /*
6327  * Handle "o" and "O" commands.
6328  */
6329     static void
6330 n_opencmd(cmdarg_T *cap)
6331 {
6332 #ifdef FEAT_CONCEAL
6333     linenr_T	oldline = curwin->w_cursor.lnum;
6334 #endif
6335 
6336     if (!checkclearopq(cap->oap))
6337     {
6338 #ifdef FEAT_FOLDING
6339 	if (cap->cmdchar == 'O')
6340 	    // Open above the first line of a folded sequence of lines
6341 	    (void)hasFolding(curwin->w_cursor.lnum,
6342 						&curwin->w_cursor.lnum, NULL);
6343 	else
6344 	    // Open below the last line of a folded sequence of lines
6345 	    (void)hasFolding(curwin->w_cursor.lnum,
6346 						NULL, &curwin->w_cursor.lnum);
6347 #endif
6348 	if (u_save((linenr_T)(curwin->w_cursor.lnum -
6349 					       (cap->cmdchar == 'O' ? 1 : 0)),
6350 		   (linenr_T)(curwin->w_cursor.lnum +
6351 					       (cap->cmdchar == 'o' ? 1 : 0))
6352 		       ) == OK
6353 		&& open_line(cap->cmdchar == 'O' ? BACKWARD : FORWARD,
6354 			 has_format_option(FO_OPEN_COMS) ? OPENLINE_DO_COM : 0,
6355 								      0) == OK)
6356 	{
6357 #ifdef FEAT_CONCEAL
6358 	    if (curwin->w_p_cole > 0 && oldline != curwin->w_cursor.lnum)
6359 		redrawWinline(curwin, oldline);
6360 #endif
6361 #ifdef FEAT_SYN_HL
6362 	    if (curwin->w_p_cul)
6363 		// force redraw of cursorline
6364 		curwin->w_valid &= ~VALID_CROW;
6365 #endif
6366 	    // When '#' is in 'cpoptions' ignore the count.
6367 	    if (vim_strchr(p_cpo, CPO_HASH) != NULL)
6368 		cap->count1 = 1;
6369 	    invoke_edit(cap, FALSE, cap->cmdchar, TRUE);
6370 	}
6371     }
6372 }
6373 
6374 /*
6375  * "." command: redo last change.
6376  */
6377     static void
6378 nv_dot(cmdarg_T *cap)
6379 {
6380     if (!checkclearopq(cap->oap))
6381     {
6382 	/*
6383 	 * If "restart_edit" is TRUE, the last but one command is repeated
6384 	 * instead of the last command (inserting text). This is used for
6385 	 * CTRL-O <.> in insert mode.
6386 	 */
6387 	if (start_redo(cap->count0, restart_edit != 0 && !arrow_used) == FAIL)
6388 	    clearopbeep(cap->oap);
6389     }
6390 }
6391 
6392 /*
6393  * CTRL-R: undo undo
6394  */
6395     static void
6396 nv_redo(cmdarg_T *cap)
6397 {
6398     if (!checkclearopq(cap->oap))
6399     {
6400 	u_redo((int)cap->count1);
6401 	curwin->w_set_curswant = TRUE;
6402     }
6403 }
6404 
6405 /*
6406  * Handle "U" command.
6407  */
6408     static void
6409 nv_Undo(cmdarg_T *cap)
6410 {
6411     // In Visual mode and typing "gUU" triggers an operator
6412     if (cap->oap->op_type == OP_UPPER || VIsual_active)
6413     {
6414 	// translate "gUU" to "gUgU"
6415 	cap->cmdchar = 'g';
6416 	cap->nchar = 'U';
6417 	nv_operator(cap);
6418     }
6419     else if (!checkclearopq(cap->oap))
6420     {
6421 	u_undoline();
6422 	curwin->w_set_curswant = TRUE;
6423     }
6424 }
6425 
6426 /*
6427  * '~' command: If tilde is not an operator and Visual is off: swap case of a
6428  * single character.
6429  */
6430     static void
6431 nv_tilde(cmdarg_T *cap)
6432 {
6433     if (!p_to && !VIsual_active && cap->oap->op_type != OP_TILDE)
6434     {
6435 #ifdef FEAT_JOB_CHANNEL
6436 	if (bt_prompt(curbuf) && !prompt_curpos_editable())
6437 	{
6438 	    clearopbeep(cap->oap);
6439 	    return;
6440 	}
6441 #endif
6442 	n_swapchar(cap);
6443     }
6444     else
6445 	nv_operator(cap);
6446 }
6447 
6448 /*
6449  * Handle an operator command.
6450  * The actual work is done by do_pending_operator().
6451  */
6452     static void
6453 nv_operator(cmdarg_T *cap)
6454 {
6455     int	    op_type;
6456 
6457     op_type = get_op_type(cap->cmdchar, cap->nchar);
6458 #ifdef FEAT_JOB_CHANNEL
6459     if (bt_prompt(curbuf) && op_is_change(op_type) && !prompt_curpos_editable())
6460     {
6461 	clearopbeep(cap->oap);
6462 	return;
6463     }
6464 #endif
6465 
6466     if (op_type == cap->oap->op_type)	    // double operator works on lines
6467 	nv_lineop(cap);
6468     else if (!checkclearop(cap->oap))
6469     {
6470 	cap->oap->start = curwin->w_cursor;
6471 	cap->oap->op_type = op_type;
6472 #ifdef FEAT_EVAL
6473 	set_op_var(op_type);
6474 #endif
6475     }
6476 }
6477 
6478 #ifdef FEAT_EVAL
6479 /*
6480  * Set v:operator to the characters for "optype".
6481  */
6482     static void
6483 set_op_var(int optype)
6484 {
6485     char_u	opchars[3];
6486 
6487     if (optype == OP_NOP)
6488 	set_vim_var_string(VV_OP, NULL, 0);
6489     else
6490     {
6491 	opchars[0] = get_op_char(optype);
6492 	opchars[1] = get_extra_op_char(optype);
6493 	opchars[2] = NUL;
6494 	set_vim_var_string(VV_OP, opchars, -1);
6495     }
6496 }
6497 #endif
6498 
6499 /*
6500  * Handle linewise operator "dd", "yy", etc.
6501  *
6502  * "_" is is a strange motion command that helps make operators more logical.
6503  * It is actually implemented, but not documented in the real Vi.  This motion
6504  * command actually refers to "the current line".  Commands like "dd" and "yy"
6505  * are really an alternate form of "d_" and "y_".  It does accept a count, so
6506  * "d3_" works to delete 3 lines.
6507  */
6508     static void
6509 nv_lineop(cmdarg_T *cap)
6510 {
6511     cap->oap->motion_type = MLINE;
6512     if (cursor_down(cap->count1 - 1L, cap->oap->op_type == OP_NOP) == FAIL)
6513 	clearopbeep(cap->oap);
6514     else if (  (cap->oap->op_type == OP_DELETE // only with linewise motions
6515 		&& cap->oap->motion_force != 'v'
6516 		&& cap->oap->motion_force != Ctrl_V)
6517 	    || cap->oap->op_type == OP_LSHIFT
6518 	    || cap->oap->op_type == OP_RSHIFT)
6519 	beginline(BL_SOL | BL_FIX);
6520     else if (cap->oap->op_type != OP_YANK)	// 'Y' does not move cursor
6521 	beginline(BL_WHITE | BL_FIX);
6522 }
6523 
6524 /*
6525  * <Home> command.
6526  */
6527     static void
6528 nv_home(cmdarg_T *cap)
6529 {
6530     // CTRL-HOME is like "gg"
6531     if (mod_mask & MOD_MASK_CTRL)
6532 	nv_goto(cap);
6533     else
6534     {
6535 	cap->count0 = 1;
6536 	nv_pipe(cap);
6537     }
6538     ins_at_eol = FALSE;	    // Don't move cursor past eol (only necessary in a
6539 			    // one-character line).
6540 }
6541 
6542 /*
6543  * "|" command.
6544  */
6545     static void
6546 nv_pipe(cmdarg_T *cap)
6547 {
6548     cap->oap->motion_type = MCHAR;
6549     cap->oap->inclusive = FALSE;
6550     beginline(0);
6551     if (cap->count0 > 0)
6552     {
6553 	coladvance((colnr_T)(cap->count0 - 1));
6554 	curwin->w_curswant = (colnr_T)(cap->count0 - 1);
6555     }
6556     else
6557 	curwin->w_curswant = 0;
6558     // keep curswant at the column where we wanted to go, not where
6559     // we ended; differs if line is too short
6560     curwin->w_set_curswant = FALSE;
6561 }
6562 
6563 /*
6564  * Handle back-word command "b" and "B".
6565  * cap->arg is 1 for "B"
6566  */
6567     static void
6568 nv_bck_word(cmdarg_T *cap)
6569 {
6570     cap->oap->motion_type = MCHAR;
6571     cap->oap->inclusive = FALSE;
6572     curwin->w_set_curswant = TRUE;
6573     if (bck_word(cap->count1, cap->arg, FALSE) == FAIL)
6574 	clearopbeep(cap->oap);
6575 #ifdef FEAT_FOLDING
6576     else if ((fdo_flags & FDO_HOR) && KeyTyped && cap->oap->op_type == OP_NOP)
6577 	foldOpenCursor();
6578 #endif
6579 }
6580 
6581 /*
6582  * Handle word motion commands "e", "E", "w" and "W".
6583  * cap->arg is TRUE for "E" and "W".
6584  */
6585     static void
6586 nv_wordcmd(cmdarg_T *cap)
6587 {
6588     int		n;
6589     int		word_end;
6590     int		flag = FALSE;
6591     pos_T	startpos = curwin->w_cursor;
6592 
6593     /*
6594      * Set inclusive for the "E" and "e" command.
6595      */
6596     if (cap->cmdchar == 'e' || cap->cmdchar == 'E')
6597 	word_end = TRUE;
6598     else
6599 	word_end = FALSE;
6600     cap->oap->inclusive = word_end;
6601 
6602     /*
6603      * "cw" and "cW" are a special case.
6604      */
6605     if (!word_end && cap->oap->op_type == OP_CHANGE)
6606     {
6607 	n = gchar_cursor();
6608 	if (n != NUL)			// not an empty line
6609 	{
6610 	    if (VIM_ISWHITE(n))
6611 	    {
6612 		/*
6613 		 * Reproduce a funny Vi behaviour: "cw" on a blank only
6614 		 * changes one character, not all blanks until the start of
6615 		 * the next word.  Only do this when the 'w' flag is included
6616 		 * in 'cpoptions'.
6617 		 */
6618 		if (cap->count1 == 1 && vim_strchr(p_cpo, CPO_CW) != NULL)
6619 		{
6620 		    cap->oap->inclusive = TRUE;
6621 		    cap->oap->motion_type = MCHAR;
6622 		    return;
6623 		}
6624 	    }
6625 	    else
6626 	    {
6627 		/*
6628 		 * This is a little strange. To match what the real Vi does,
6629 		 * we effectively map 'cw' to 'ce', and 'cW' to 'cE', provided
6630 		 * that we are not on a space or a TAB.  This seems impolite
6631 		 * at first, but it's really more what we mean when we say
6632 		 * 'cw'.
6633 		 * Another strangeness: When standing on the end of a word
6634 		 * "ce" will change until the end of the next word, but "cw"
6635 		 * will change only one character! This is done by setting
6636 		 * flag.
6637 		 */
6638 		cap->oap->inclusive = TRUE;
6639 		word_end = TRUE;
6640 		flag = TRUE;
6641 	    }
6642 	}
6643     }
6644 
6645     cap->oap->motion_type = MCHAR;
6646     curwin->w_set_curswant = TRUE;
6647     if (word_end)
6648 	n = end_word(cap->count1, cap->arg, flag, FALSE);
6649     else
6650 	n = fwd_word(cap->count1, cap->arg, cap->oap->op_type != OP_NOP);
6651 
6652     // Don't leave the cursor on the NUL past the end of line. Unless we
6653     // didn't move it forward.
6654     if (LT_POS(startpos, curwin->w_cursor))
6655 	adjust_cursor(cap->oap);
6656 
6657     if (n == FAIL && cap->oap->op_type == OP_NOP)
6658 	clearopbeep(cap->oap);
6659     else
6660     {
6661 	adjust_for_sel(cap);
6662 #ifdef FEAT_FOLDING
6663 	if ((fdo_flags & FDO_HOR) && KeyTyped && cap->oap->op_type == OP_NOP)
6664 	    foldOpenCursor();
6665 #endif
6666     }
6667 }
6668 
6669 /*
6670  * Used after a movement command: If the cursor ends up on the NUL after the
6671  * end of the line, may move it back to the last character and make the motion
6672  * inclusive.
6673  */
6674     static void
6675 adjust_cursor(oparg_T *oap)
6676 {
6677     // The cursor cannot remain on the NUL when:
6678     // - the column is > 0
6679     // - not in Visual mode or 'selection' is "o"
6680     // - 'virtualedit' is not "all" and not "onemore".
6681     if (curwin->w_cursor.col > 0 && gchar_cursor() == NUL
6682 		&& (!VIsual_active || *p_sel == 'o')
6683 		&& !virtual_active() && (ve_flags & VE_ONEMORE) == 0)
6684     {
6685 	--curwin->w_cursor.col;
6686 	// prevent cursor from moving on the trail byte
6687 	if (has_mbyte)
6688 	    mb_adjust_cursor();
6689 	oap->inclusive = TRUE;
6690     }
6691 }
6692 
6693 /*
6694  * "0" and "^" commands.
6695  * cap->arg is the argument for beginline().
6696  */
6697     static void
6698 nv_beginline(cmdarg_T *cap)
6699 {
6700     cap->oap->motion_type = MCHAR;
6701     cap->oap->inclusive = FALSE;
6702     beginline(cap->arg);
6703 #ifdef FEAT_FOLDING
6704     if ((fdo_flags & FDO_HOR) && KeyTyped && cap->oap->op_type == OP_NOP)
6705 	foldOpenCursor();
6706 #endif
6707     ins_at_eol = FALSE;	    // Don't move cursor past eol (only necessary in a
6708 			    // one-character line).
6709 }
6710 
6711 /*
6712  * In exclusive Visual mode, may include the last character.
6713  */
6714     static void
6715 adjust_for_sel(cmdarg_T *cap)
6716 {
6717     if (VIsual_active && cap->oap->inclusive && *p_sel == 'e'
6718 	    && gchar_cursor() != NUL && LT_POS(VIsual, curwin->w_cursor))
6719     {
6720 	if (has_mbyte)
6721 	    inc_cursor();
6722 	else
6723 	    ++curwin->w_cursor.col;
6724 	cap->oap->inclusive = FALSE;
6725     }
6726 }
6727 
6728 /*
6729  * Exclude last character at end of Visual area for 'selection' == "exclusive".
6730  * Should check VIsual_mode before calling this.
6731  * Returns TRUE when backed up to the previous line.
6732  */
6733     int
6734 unadjust_for_sel(void)
6735 {
6736     pos_T	*pp;
6737 
6738     if (*p_sel == 'e' && !EQUAL_POS(VIsual, curwin->w_cursor))
6739     {
6740 	if (LT_POS(VIsual, curwin->w_cursor))
6741 	    pp = &curwin->w_cursor;
6742 	else
6743 	    pp = &VIsual;
6744 	if (pp->coladd > 0)
6745 	    --pp->coladd;
6746 	else
6747 	if (pp->col > 0)
6748 	{
6749 	    --pp->col;
6750 	    mb_adjustpos(curbuf, pp);
6751 	}
6752 	else if (pp->lnum > 1)
6753 	{
6754 	    --pp->lnum;
6755 	    pp->col = (colnr_T)STRLEN(ml_get(pp->lnum));
6756 	    return TRUE;
6757 	}
6758     }
6759     return FALSE;
6760 }
6761 
6762 /*
6763  * SELECT key in Normal or Visual mode: end of Select mode mapping.
6764  */
6765     static void
6766 nv_select(cmdarg_T *cap)
6767 {
6768     if (VIsual_active)
6769 	VIsual_select = TRUE;
6770     else if (VIsual_reselect)
6771     {
6772 	cap->nchar = 'v';	    // fake "gv" command
6773 	cap->arg = TRUE;
6774 	nv_g_cmd(cap);
6775     }
6776 }
6777 
6778 
6779 /*
6780  * "G", "gg", CTRL-END, CTRL-HOME.
6781  * cap->arg is TRUE for "G".
6782  */
6783     static void
6784 nv_goto(cmdarg_T *cap)
6785 {
6786     linenr_T	lnum;
6787 
6788     if (cap->arg)
6789 	lnum = curbuf->b_ml.ml_line_count;
6790     else
6791 	lnum = 1L;
6792     cap->oap->motion_type = MLINE;
6793     setpcmark();
6794 
6795     // When a count is given, use it instead of the default lnum
6796     if (cap->count0 != 0)
6797 	lnum = cap->count0;
6798     if (lnum < 1L)
6799 	lnum = 1L;
6800     else if (lnum > curbuf->b_ml.ml_line_count)
6801 	lnum = curbuf->b_ml.ml_line_count;
6802     curwin->w_cursor.lnum = lnum;
6803     beginline(BL_SOL | BL_FIX);
6804 #ifdef FEAT_FOLDING
6805     if ((fdo_flags & FDO_JUMP) && KeyTyped && cap->oap->op_type == OP_NOP)
6806 	foldOpenCursor();
6807 #endif
6808 }
6809 
6810 /*
6811  * CTRL-\ in Normal mode.
6812  */
6813     static void
6814 nv_normal(cmdarg_T *cap)
6815 {
6816     if (cap->nchar == Ctrl_N || cap->nchar == Ctrl_G)
6817     {
6818 	clearop(cap->oap);
6819 	if (restart_edit != 0 && mode_displayed)
6820 	    clear_cmdline = TRUE;		// unshow mode later
6821 	restart_edit = 0;
6822 #ifdef FEAT_CMDWIN
6823 	if (cmdwin_type != 0)
6824 	    cmdwin_result = Ctrl_C;
6825 #endif
6826 	if (VIsual_active)
6827 	{
6828 	    end_visual_mode();		// stop Visual
6829 	    redraw_curbuf_later(INVERTED);
6830 	}
6831 	// CTRL-\ CTRL-G restarts Insert mode when 'insertmode' is set.
6832 	if (cap->nchar == Ctrl_G && p_im)
6833 	    restart_edit = 'a';
6834     }
6835     else
6836 	clearopbeep(cap->oap);
6837 }
6838 
6839 /*
6840  * ESC in Normal mode: beep, but don't flush buffers.
6841  * Don't even beep if we are canceling a command.
6842  */
6843     static void
6844 nv_esc(cmdarg_T *cap)
6845 {
6846     int		no_reason;
6847 
6848     no_reason = (cap->oap->op_type == OP_NOP
6849 		&& cap->opcount == 0
6850 		&& cap->count0 == 0
6851 		&& cap->oap->regname == 0
6852 		&& !p_im);
6853 
6854     if (cap->arg)		// TRUE for CTRL-C
6855     {
6856 	if (restart_edit == 0
6857 #ifdef FEAT_CMDWIN
6858 		&& cmdwin_type == 0
6859 #endif
6860 		&& !VIsual_active
6861 		&& no_reason)
6862 	{
6863 	    if (anyBufIsChanged())
6864 		msg(_("Type  :qa!  and press <Enter> to abandon all changes and exit Vim"));
6865 	    else
6866 		msg(_("Type  :qa  and press <Enter> to exit Vim"));
6867 	}
6868 
6869 	// Don't reset "restart_edit" when 'insertmode' is set, it won't be
6870 	// set again below when halfway a mapping.
6871 	if (!p_im)
6872 	    restart_edit = 0;
6873 #ifdef FEAT_CMDWIN
6874 	if (cmdwin_type != 0)
6875 	{
6876 	    cmdwin_result = K_IGNORE;
6877 	    got_int = FALSE;	// don't stop executing autocommands et al.
6878 	    return;
6879 	}
6880 #endif
6881     }
6882 
6883     if (VIsual_active)
6884     {
6885 	end_visual_mode();	// stop Visual
6886 	check_cursor_col();	// make sure cursor is not beyond EOL
6887 	curwin->w_set_curswant = TRUE;
6888 	redraw_curbuf_later(INVERTED);
6889     }
6890     else if (no_reason)
6891 	vim_beep(BO_ESC);
6892     clearop(cap->oap);
6893 
6894     // A CTRL-C is often used at the start of a menu.  When 'insertmode' is
6895     // set return to Insert mode afterwards.
6896     if (restart_edit == 0 && goto_im() && ex_normal_busy == 0)
6897 	restart_edit = 'a';
6898 }
6899 
6900 /*
6901  * Move the cursor for the "A" command.
6902  */
6903     void
6904 set_cursor_for_append_to_line(void)
6905 {
6906     curwin->w_set_curswant = TRUE;
6907     if (ve_flags == VE_ALL)
6908     {
6909 	int save_State = State;
6910 
6911 	// Pretend Insert mode here to allow the cursor on the
6912 	// character past the end of the line
6913 	State = INSERT;
6914 	coladvance((colnr_T)MAXCOL);
6915 	State = save_State;
6916     }
6917     else
6918 	curwin->w_cursor.col += (colnr_T)STRLEN(ml_get_cursor());
6919 }
6920 
6921 /*
6922  * Handle "A", "a", "I", "i" and <Insert> commands.
6923  * Also handle K_PS, start bracketed paste.
6924  */
6925     static void
6926 nv_edit(cmdarg_T *cap)
6927 {
6928     // <Insert> is equal to "i"
6929     if (cap->cmdchar == K_INS || cap->cmdchar == K_KINS)
6930 	cap->cmdchar = 'i';
6931 
6932     // in Visual mode "A" and "I" are an operator
6933     if (VIsual_active && (cap->cmdchar == 'A' || cap->cmdchar == 'I'))
6934     {
6935 #ifdef FEAT_TERMINAL
6936 	if (term_in_normal_mode())
6937 	{
6938 	    end_visual_mode();
6939 	    clearop(cap->oap);
6940 	    term_enter_job_mode();
6941 	    return;
6942 	}
6943 #endif
6944 	v_visop(cap);
6945     }
6946 
6947     // in Visual mode and after an operator "a" and "i" are for text objects
6948     else if ((cap->cmdchar == 'a' || cap->cmdchar == 'i')
6949 	    && (cap->oap->op_type != OP_NOP || VIsual_active))
6950     {
6951 #ifdef FEAT_TEXTOBJ
6952 	nv_object(cap);
6953 #else
6954 	clearopbeep(cap->oap);
6955 #endif
6956     }
6957 #ifdef FEAT_TERMINAL
6958     else if (term_in_normal_mode())
6959     {
6960 	clearop(cap->oap);
6961 	term_enter_job_mode();
6962 	return;
6963     }
6964 #endif
6965     else if (!curbuf->b_p_ma && !p_im)
6966     {
6967 	// Only give this error when 'insertmode' is off.
6968 	emsg(_(e_modifiable));
6969 	clearop(cap->oap);
6970 	if (cap->cmdchar == K_PS)
6971 	    // drop the pasted text
6972 	    bracketed_paste(PASTE_INSERT, TRUE, NULL);
6973     }
6974     else if (cap->cmdchar == K_PS && VIsual_active)
6975     {
6976 	pos_T old_pos = curwin->w_cursor;
6977 	pos_T old_visual = VIsual;
6978 
6979 	// In Visual mode the selected text is deleted.
6980 	if (VIsual_mode == 'V' || curwin->w_cursor.lnum != VIsual.lnum)
6981 	{
6982 	    shift_delete_registers();
6983 	    cap->oap->regname = '1';
6984 	}
6985 	else
6986 	    cap->oap->regname = '-';
6987 	cap->cmdchar = 'd';
6988 	cap->nchar = NUL;
6989 	nv_operator(cap);
6990 	do_pending_operator(cap, 0, FALSE);
6991 	cap->cmdchar = K_PS;
6992 
6993 	// When the last char in the line was deleted then append. Detect this
6994 	// by checking if the cursor moved to before the Visual area.
6995 	if (*ml_get_cursor() != NUL && LT_POS(curwin->w_cursor, old_pos)
6996 				       && LT_POS(curwin->w_cursor, old_visual))
6997 	    inc_cursor();
6998 
6999 	// Insert to replace the deleted text with the pasted text.
7000 	invoke_edit(cap, FALSE, cap->cmdchar, FALSE);
7001     }
7002     else if (!checkclearopq(cap->oap))
7003     {
7004 	switch (cap->cmdchar)
7005 	{
7006 	    case 'A':	// "A"ppend after the line
7007 		set_cursor_for_append_to_line();
7008 		break;
7009 
7010 	    case 'I':	// "I"nsert before the first non-blank
7011 		if (vim_strchr(p_cpo, CPO_INSEND) == NULL)
7012 		    beginline(BL_WHITE);
7013 		else
7014 		    beginline(BL_WHITE|BL_FIX);
7015 		break;
7016 
7017 	    case K_PS:
7018 		// Bracketed paste works like "a"ppend, unless the cursor is in
7019 		// the first column, then it inserts.
7020 		if (curwin->w_cursor.col == 0)
7021 		    break;
7022 		// FALLTHROUGH
7023 
7024 	    case 'a':	// "a"ppend is like "i"nsert on the next character.
7025 		// increment coladd when in virtual space, increment the
7026 		// column otherwise, also to append after an unprintable char
7027 		if (virtual_active()
7028 			&& (curwin->w_cursor.coladd > 0
7029 			    || *ml_get_cursor() == NUL
7030 			    || *ml_get_cursor() == TAB))
7031 		    curwin->w_cursor.coladd++;
7032 		else if (*ml_get_cursor() != NUL)
7033 		    inc_cursor();
7034 		break;
7035 	}
7036 
7037 	if (curwin->w_cursor.coladd && cap->cmdchar != 'A')
7038 	{
7039 	    int save_State = State;
7040 
7041 	    // Pretend Insert mode here to allow the cursor on the
7042 	    // character past the end of the line
7043 	    State = INSERT;
7044 	    coladvance(getviscol());
7045 	    State = save_State;
7046 	}
7047 
7048 	invoke_edit(cap, FALSE, cap->cmdchar, FALSE);
7049     }
7050     else if (cap->cmdchar == K_PS)
7051 	// drop the pasted text
7052 	bracketed_paste(PASTE_INSERT, TRUE, NULL);
7053 }
7054 
7055 /*
7056  * Invoke edit() and take care of "restart_edit" and the return value.
7057  */
7058     static void
7059 invoke_edit(
7060     cmdarg_T	*cap,
7061     int		repl,		// "r" or "gr" command
7062     int		cmd,
7063     int		startln)
7064 {
7065     int		restart_edit_save = 0;
7066 
7067     // Complicated: When the user types "a<C-O>a" we don't want to do Insert
7068     // mode recursively.  But when doing "a<C-O>." or "a<C-O>rx" we do allow
7069     // it.
7070     if (repl || !stuff_empty())
7071 	restart_edit_save = restart_edit;
7072     else
7073 	restart_edit_save = 0;
7074 
7075     // Always reset "restart_edit", this is not a restarted edit.
7076     restart_edit = 0;
7077 
7078     if (edit(cmd, startln, cap->count1))
7079 	cap->retval |= CA_COMMAND_BUSY;
7080 
7081     if (restart_edit == 0)
7082 	restart_edit = restart_edit_save;
7083 }
7084 
7085 #ifdef FEAT_TEXTOBJ
7086 /*
7087  * "a" or "i" while an operator is pending or in Visual mode: object motion.
7088  */
7089     static void
7090 nv_object(
7091     cmdarg_T	*cap)
7092 {
7093     int		flag;
7094     int		include;
7095     char_u	*mps_save;
7096 
7097     if (cap->cmdchar == 'i')
7098 	include = FALSE;    // "ix" = inner object: exclude white space
7099     else
7100 	include = TRUE;	    // "ax" = an object: include white space
7101 
7102     // Make sure (), [], {} and <> are in 'matchpairs'
7103     mps_save = curbuf->b_p_mps;
7104     curbuf->b_p_mps = (char_u *)"(:),{:},[:],<:>";
7105 
7106     switch (cap->nchar)
7107     {
7108 	case 'w': // "aw" = a word
7109 		flag = current_word(cap->oap, cap->count1, include, FALSE);
7110 		break;
7111 	case 'W': // "aW" = a WORD
7112 		flag = current_word(cap->oap, cap->count1, include, TRUE);
7113 		break;
7114 	case 'b': // "ab" = a braces block
7115 	case '(':
7116 	case ')':
7117 		flag = current_block(cap->oap, cap->count1, include, '(', ')');
7118 		break;
7119 	case 'B': // "aB" = a Brackets block
7120 	case '{':
7121 	case '}':
7122 		flag = current_block(cap->oap, cap->count1, include, '{', '}');
7123 		break;
7124 	case '[': // "a[" = a [] block
7125 	case ']':
7126 		flag = current_block(cap->oap, cap->count1, include, '[', ']');
7127 		break;
7128 	case '<': // "a<" = a <> block
7129 	case '>':
7130 		flag = current_block(cap->oap, cap->count1, include, '<', '>');
7131 		break;
7132 	case 't': // "at" = a tag block (xml and html)
7133 		// Do not adjust oap->end in do_pending_operator()
7134 		// otherwise there are different results for 'dit'
7135 		// (note leading whitespace in last line):
7136 		// 1) <b>      2) <b>
7137 		//    foobar      foobar
7138 		//    </b>            </b>
7139 		cap->retval |= CA_NO_ADJ_OP_END;
7140 		flag = current_tagblock(cap->oap, cap->count1, include);
7141 		break;
7142 	case 'p': // "ap" = a paragraph
7143 		flag = current_par(cap->oap, cap->count1, include, 'p');
7144 		break;
7145 	case 's': // "as" = a sentence
7146 		flag = current_sent(cap->oap, cap->count1, include);
7147 		break;
7148 	case '"': // "a"" = a double quoted string
7149 	case '\'': // "a'" = a single quoted string
7150 	case '`': // "a`" = a backtick quoted string
7151 		flag = current_quote(cap->oap, cap->count1, include,
7152 								  cap->nchar);
7153 		break;
7154 #if 0	// TODO
7155 	case 'S': // "aS" = a section
7156 	case 'f': // "af" = a filename
7157 	case 'u': // "au" = a URL
7158 #endif
7159 	default:
7160 		flag = FAIL;
7161 		break;
7162     }
7163 
7164     curbuf->b_p_mps = mps_save;
7165     if (flag == FAIL)
7166 	clearopbeep(cap->oap);
7167     adjust_cursor_col();
7168     curwin->w_set_curswant = TRUE;
7169 }
7170 #endif
7171 
7172 /*
7173  * "q" command: Start/stop recording.
7174  * "q:", "q/", "q?": edit command-line in command-line window.
7175  */
7176     static void
7177 nv_record(cmdarg_T *cap)
7178 {
7179     if (cap->oap->op_type == OP_FORMAT)
7180     {
7181 	// "gqq" is the same as "gqgq": format line
7182 	cap->cmdchar = 'g';
7183 	cap->nchar = 'q';
7184 	nv_operator(cap);
7185     }
7186     else if (!checkclearop(cap->oap))
7187     {
7188 #ifdef FEAT_CMDWIN
7189 	if (cap->nchar == ':' || cap->nchar == '/' || cap->nchar == '?')
7190 	{
7191 	    stuffcharReadbuff(cap->nchar);
7192 	    stuffcharReadbuff(K_CMDWIN);
7193 	}
7194 	else
7195 #endif
7196 	    // (stop) recording into a named register, unless executing a
7197 	    // register
7198 	    if (reg_executing == 0 && do_record(cap->nchar) == FAIL)
7199 		clearopbeep(cap->oap);
7200     }
7201 }
7202 
7203 /*
7204  * Handle the "@r" command.
7205  */
7206     static void
7207 nv_at(cmdarg_T *cap)
7208 {
7209     if (checkclearop(cap->oap))
7210 	return;
7211 #ifdef FEAT_EVAL
7212     if (cap->nchar == '=')
7213     {
7214 	if (get_expr_register() == NUL)
7215 	    return;
7216     }
7217 #endif
7218     while (cap->count1-- && !got_int)
7219     {
7220 	if (do_execreg(cap->nchar, FALSE, FALSE, FALSE) == FAIL)
7221 	{
7222 	    clearopbeep(cap->oap);
7223 	    break;
7224 	}
7225 	line_breakcheck();
7226     }
7227 }
7228 
7229 /*
7230  * Handle the CTRL-U and CTRL-D commands.
7231  */
7232     static void
7233 nv_halfpage(cmdarg_T *cap)
7234 {
7235     if ((cap->cmdchar == Ctrl_U && curwin->w_cursor.lnum == 1)
7236 	    || (cap->cmdchar == Ctrl_D
7237 		&& curwin->w_cursor.lnum == curbuf->b_ml.ml_line_count))
7238 	clearopbeep(cap->oap);
7239     else if (!checkclearop(cap->oap))
7240 	halfpage(cap->cmdchar == Ctrl_D, cap->count0);
7241 }
7242 
7243 /*
7244  * Handle "J" or "gJ" command.
7245  */
7246     static void
7247 nv_join(cmdarg_T *cap)
7248 {
7249     if (VIsual_active)	// join the visual lines
7250 	nv_operator(cap);
7251     else if (!checkclearop(cap->oap))
7252     {
7253 	if (cap->count0 <= 1)
7254 	    cap->count0 = 2;	    // default for join is two lines!
7255 	if (curwin->w_cursor.lnum + cap->count0 - 1 >
7256 						   curbuf->b_ml.ml_line_count)
7257 	{
7258 	    // can't join when on the last line
7259 	    if (cap->count0 <= 2)
7260 	    {
7261 		clearopbeep(cap->oap);
7262 		return;
7263 	    }
7264 	    cap->count0 = curbuf->b_ml.ml_line_count
7265 						  - curwin->w_cursor.lnum + 1;
7266 	}
7267 
7268 	prep_redo(cap->oap->regname, cap->count0,
7269 				     NUL, cap->cmdchar, NUL, NUL, cap->nchar);
7270 	(void)do_join(cap->count0, cap->nchar == NUL, TRUE, TRUE, TRUE);
7271     }
7272 }
7273 
7274 /*
7275  * "P", "gP", "p" and "gp" commands.
7276  */
7277     static void
7278 nv_put(cmdarg_T *cap)
7279 {
7280     nv_put_opt(cap, FALSE);
7281 }
7282 
7283 /*
7284  * "P", "gP", "p" and "gp" commands.
7285  * "fix_indent" is TRUE for "[p", "[P", "]p" and "]P".
7286  */
7287     static void
7288 nv_put_opt(cmdarg_T *cap, int fix_indent)
7289 {
7290     int		regname = 0;
7291     void	*reg1 = NULL, *reg2 = NULL;
7292     int		empty = FALSE;
7293     int		was_visual = FALSE;
7294     int		dir;
7295     int		flags = 0;
7296 
7297     if (cap->oap->op_type != OP_NOP)
7298     {
7299 #ifdef FEAT_DIFF
7300 	// "dp" is ":diffput"
7301 	if (cap->oap->op_type == OP_DELETE && cap->cmdchar == 'p')
7302 	{
7303 	    clearop(cap->oap);
7304 	    nv_diffgetput(TRUE, cap->opcount);
7305 	}
7306 	else
7307 #endif
7308 	clearopbeep(cap->oap);
7309     }
7310 #ifdef FEAT_JOB_CHANNEL
7311     else if (bt_prompt(curbuf) && !prompt_curpos_editable())
7312     {
7313 	clearopbeep(cap->oap);
7314     }
7315 #endif
7316     else
7317     {
7318 	if (fix_indent)
7319 	{
7320 	    dir = (cap->cmdchar == ']' && cap->nchar == 'p')
7321 							 ? FORWARD : BACKWARD;
7322 	    flags |= PUT_FIXINDENT;
7323 	}
7324 	else
7325 	    dir = (cap->cmdchar == 'P'
7326 				 || (cap->cmdchar == 'g' && cap->nchar == 'P'))
7327 							 ? BACKWARD : FORWARD;
7328 	prep_redo_cmd(cap);
7329 	if (cap->cmdchar == 'g')
7330 	    flags |= PUT_CURSEND;
7331 
7332 	if (VIsual_active)
7333 	{
7334 	    // Putting in Visual mode: The put text replaces the selected
7335 	    // text.  First delete the selected text, then put the new text.
7336 	    // Need to save and restore the registers that the delete
7337 	    // overwrites if the old contents is being put.
7338 	    was_visual = TRUE;
7339 	    regname = cap->oap->regname;
7340 #ifdef FEAT_CLIPBOARD
7341 	    adjust_clip_reg(&regname);
7342 #endif
7343 	   if (regname == 0 || regname == '"'
7344 				     || VIM_ISDIGIT(regname) || regname == '-'
7345 #ifdef FEAT_CLIPBOARD
7346 		    || (clip_unnamed && (regname == '*' || regname == '+'))
7347 #endif
7348 
7349 		    )
7350 	    {
7351 		// The delete is going to overwrite the register we want to
7352 		// put, save it first.
7353 		reg1 = get_register(regname, TRUE);
7354 	    }
7355 
7356 	    // Now delete the selected text. Avoid messages here.
7357 	    cap->cmdchar = 'd';
7358 	    cap->nchar = NUL;
7359 	    cap->oap->regname = NUL;
7360 	    ++msg_silent;
7361 	    nv_operator(cap);
7362 	    do_pending_operator(cap, 0, FALSE);
7363 	    empty = (curbuf->b_ml.ml_flags & ML_EMPTY);
7364 	    --msg_silent;
7365 
7366 	    // delete PUT_LINE_BACKWARD;
7367 	    cap->oap->regname = regname;
7368 
7369 	    if (reg1 != NULL)
7370 	    {
7371 		// Delete probably changed the register we want to put, save
7372 		// it first. Then put back what was there before the delete.
7373 		reg2 = get_register(regname, FALSE);
7374 		put_register(regname, reg1);
7375 	    }
7376 
7377 	    // When deleted a linewise Visual area, put the register as
7378 	    // lines to avoid it joined with the next line.  When deletion was
7379 	    // characterwise, split a line when putting lines.
7380 	    if (VIsual_mode == 'V')
7381 		flags |= PUT_LINE;
7382 	    else if (VIsual_mode == 'v')
7383 		flags |= PUT_LINE_SPLIT;
7384 	    if (VIsual_mode == Ctrl_V && dir == FORWARD)
7385 		flags |= PUT_LINE_FORWARD;
7386 	    dir = BACKWARD;
7387 	    if ((VIsual_mode != 'V'
7388 			&& curwin->w_cursor.col < curbuf->b_op_start.col)
7389 		    || (VIsual_mode == 'V'
7390 			&& curwin->w_cursor.lnum < curbuf->b_op_start.lnum))
7391 		// cursor is at the end of the line or end of file, put
7392 		// forward.
7393 		dir = FORWARD;
7394 	    // May have been reset in do_put().
7395 	    VIsual_active = TRUE;
7396 	}
7397 	do_put(cap->oap->regname, dir, cap->count1, flags);
7398 
7399 	// If a register was saved, put it back now.
7400 	if (reg2 != NULL)
7401 	    put_register(regname, reg2);
7402 
7403 	// What to reselect with "gv"?  Selecting the just put text seems to
7404 	// be the most useful, since the original text was removed.
7405 	if (was_visual)
7406 	{
7407 	    curbuf->b_visual.vi_start = curbuf->b_op_start;
7408 	    curbuf->b_visual.vi_end = curbuf->b_op_end;
7409 	    // need to adjust cursor position
7410 	    if (*p_sel == 'e')
7411 		inc(&curbuf->b_visual.vi_end);
7412 	}
7413 
7414 	// When all lines were selected and deleted do_put() leaves an empty
7415 	// line that needs to be deleted now.
7416 	if (empty && *ml_get(curbuf->b_ml.ml_line_count) == NUL)
7417 	{
7418 	    ml_delete_flags(curbuf->b_ml.ml_line_count, ML_DEL_MESSAGE);
7419 	    deleted_lines(curbuf->b_ml.ml_line_count + 1, 1);
7420 
7421 	    // If the cursor was in that line, move it to the end of the last
7422 	    // line.
7423 	    if (curwin->w_cursor.lnum > curbuf->b_ml.ml_line_count)
7424 	    {
7425 		curwin->w_cursor.lnum = curbuf->b_ml.ml_line_count;
7426 		coladvance((colnr_T)MAXCOL);
7427 	    }
7428 	}
7429 	auto_format(FALSE, TRUE);
7430     }
7431 }
7432 
7433 /*
7434  * "o" and "O" commands.
7435  */
7436     static void
7437 nv_open(cmdarg_T *cap)
7438 {
7439 #ifdef FEAT_DIFF
7440     // "do" is ":diffget"
7441     if (cap->oap->op_type == OP_DELETE && cap->cmdchar == 'o')
7442     {
7443 	clearop(cap->oap);
7444 	nv_diffgetput(FALSE, cap->opcount);
7445     }
7446     else
7447 #endif
7448     if (VIsual_active)  // switch start and end of visual
7449 	v_swap_corners(cap->cmdchar);
7450 #ifdef FEAT_JOB_CHANNEL
7451     else if (bt_prompt(curbuf))
7452 	clearopbeep(cap->oap);
7453 #endif
7454     else
7455 	n_opencmd(cap);
7456 }
7457 
7458 #ifdef FEAT_NETBEANS_INTG
7459     static void
7460 nv_nbcmd(cmdarg_T *cap)
7461 {
7462     netbeans_keycommand(cap->nchar);
7463 }
7464 #endif
7465 
7466 #ifdef FEAT_DND
7467     static void
7468 nv_drop(cmdarg_T *cap UNUSED)
7469 {
7470     do_put('~', BACKWARD, 1L, PUT_CURSEND);
7471 }
7472 #endif
7473 
7474 /*
7475  * Trigger CursorHold event.
7476  * When waiting for a character for 'updatetime' K_CURSORHOLD is put in the
7477  * input buffer.  "did_cursorhold" is set to avoid retriggering.
7478  */
7479     static void
7480 nv_cursorhold(cmdarg_T *cap)
7481 {
7482     apply_autocmds(EVENT_CURSORHOLD, NULL, NULL, FALSE, curbuf);
7483     did_cursorhold = TRUE;
7484     cap->retval |= CA_COMMAND_BUSY;	// don't call edit() now
7485 }
7486