xref: /vim-8.2.3635/src/normal.c (revision 325b7a2f)
1 /* vi:set ts=8 sts=4 sw=4:
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 #ifdef FEAT_VISUAL
18 /*
19  * The Visual area is remembered for reselection.
20  */
21 static int	resel_VIsual_mode = NUL;	/* 'v', 'V', or Ctrl-V */
22 static linenr_T	resel_VIsual_line_count;	/* number of lines */
23 static colnr_T	resel_VIsual_col;		/* nr of cols or end col */
24 
25 static int	restart_VIsual_select = 0;
26 #endif
27 
28 static int
29 # ifdef __BORLANDC__
30 _RTLENTRYF
31 # endif
32 		nv_compare __ARGS((const void *s1, const void *s2));
33 static int	find_command __ARGS((int cmdchar));
34 static void	op_colon __ARGS((oparg_T *oap));
35 #if defined(FEAT_MOUSE) && defined(FEAT_VISUAL)
36 static void	find_start_of_word __ARGS((pos_T *));
37 static void	find_end_of_word __ARGS((pos_T *));
38 static int	get_mouse_class __ARGS((char_u *p));
39 #endif
40 static void	prep_redo_cmd __ARGS((cmdarg_T *cap));
41 static void	prep_redo __ARGS((int regname, long, int, int, int, int, int));
42 static int	checkclearop __ARGS((oparg_T *oap));
43 static int	checkclearopq __ARGS((oparg_T *oap));
44 static void	clearop __ARGS((oparg_T *oap));
45 static void	clearopbeep __ARGS((oparg_T *oap));
46 #ifdef FEAT_VISUAL
47 static void	unshift_special __ARGS((cmdarg_T *cap));
48 #endif
49 #ifdef FEAT_CMDL_INFO
50 static void	del_from_showcmd __ARGS((int));
51 #endif
52 
53 /*
54  * nv_*(): functions called to handle Normal and Visual mode commands.
55  * n_*(): functions called to handle Normal mode commands.
56  * v_*(): functions called to handle Visual mode commands.
57  */
58 static void	nv_ignore __ARGS((cmdarg_T *cap));
59 static void	nv_error __ARGS((cmdarg_T *cap));
60 static void	nv_help __ARGS((cmdarg_T *cap));
61 static void	nv_addsub __ARGS((cmdarg_T *cap));
62 static void	nv_page __ARGS((cmdarg_T *cap));
63 static void	nv_gd __ARGS((oparg_T *oap, int nchar));
64 static int	nv_screengo __ARGS((oparg_T *oap, int dir, long dist));
65 #ifdef FEAT_MOUSE
66 static void	nv_mousescroll __ARGS((cmdarg_T *cap));
67 static void	nv_mouse __ARGS((cmdarg_T *cap));
68 #endif
69 static void	nv_scroll_line __ARGS((cmdarg_T *cap));
70 static void	nv_zet __ARGS((cmdarg_T *cap));
71 #ifdef FEAT_GUI
72 static void	nv_ver_scrollbar __ARGS((cmdarg_T *cap));
73 static void	nv_hor_scrollbar __ARGS((cmdarg_T *cap));
74 #endif
75 static void	nv_exmode __ARGS((cmdarg_T *cap));
76 static void	nv_colon __ARGS((cmdarg_T *cap));
77 static void	nv_ctrlg __ARGS((cmdarg_T *cap));
78 static void	nv_ctrlh __ARGS((cmdarg_T *cap));
79 static void	nv_clear __ARGS((cmdarg_T *cap));
80 static void	nv_ctrlo __ARGS((cmdarg_T *cap));
81 static void	nv_hat __ARGS((cmdarg_T *cap));
82 static void	nv_Zet __ARGS((cmdarg_T *cap));
83 static void	nv_ident __ARGS((cmdarg_T *cap));
84 #ifdef FEAT_VISUAL
85 static int	get_visual_text __ARGS((cmdarg_T *cap, char_u **pp, int *lenp));
86 #endif
87 static void	nv_tagpop __ARGS((cmdarg_T *cap));
88 static void	nv_scroll __ARGS((cmdarg_T *cap));
89 static void	nv_right __ARGS((cmdarg_T *cap));
90 static void	nv_left __ARGS((cmdarg_T *cap));
91 static void	nv_up __ARGS((cmdarg_T *cap));
92 static void	nv_down __ARGS((cmdarg_T *cap));
93 #ifdef FEAT_SEARCHPATH
94 static void	nv_gotofile __ARGS((cmdarg_T *cap));
95 #endif
96 static void	nv_end __ARGS((cmdarg_T *cap));
97 static void	nv_dollar __ARGS((cmdarg_T *cap));
98 static void	nv_search __ARGS((cmdarg_T *cap));
99 static void	nv_next __ARGS((cmdarg_T *cap));
100 static void	normal_search __ARGS((cmdarg_T *cap, int dir, char_u *pat, int opt));
101 static void	nv_csearch __ARGS((cmdarg_T *cap));
102 static void	nv_brackets __ARGS((cmdarg_T *cap));
103 static void	nv_percent __ARGS((cmdarg_T *cap));
104 static void	nv_brace __ARGS((cmdarg_T *cap));
105 static void	nv_mark __ARGS((cmdarg_T *cap));
106 static void	nv_findpar __ARGS((cmdarg_T *cap));
107 static void	nv_undo __ARGS((cmdarg_T *cap));
108 static void	nv_kundo __ARGS((cmdarg_T *cap));
109 static void	nv_Replace __ARGS((cmdarg_T *cap));
110 #ifdef FEAT_VREPLACE
111 static void	nv_vreplace __ARGS((cmdarg_T *cap));
112 #endif
113 #ifdef FEAT_VISUAL
114 static void	v_swap_corners __ARGS((int cmdchar));
115 #endif
116 static void	nv_replace __ARGS((cmdarg_T *cap));
117 static void	n_swapchar __ARGS((cmdarg_T *cap));
118 static void	nv_cursormark __ARGS((cmdarg_T *cap, int flag, pos_T *pos));
119 #ifdef FEAT_VISUAL
120 static void	v_visop __ARGS((cmdarg_T *cap));
121 #endif
122 static void	nv_subst __ARGS((cmdarg_T *cap));
123 static void	nv_abbrev __ARGS((cmdarg_T *cap));
124 static void	nv_optrans __ARGS((cmdarg_T *cap));
125 static void	nv_gomark __ARGS((cmdarg_T *cap));
126 static void	nv_pcmark __ARGS((cmdarg_T *cap));
127 static void	nv_regname __ARGS((cmdarg_T *cap));
128 #ifdef FEAT_VISUAL
129 static void	nv_visual __ARGS((cmdarg_T *cap));
130 static void	n_start_visual_mode __ARGS((int c));
131 #endif
132 static void	nv_window __ARGS((cmdarg_T *cap));
133 static void	nv_suspend __ARGS((cmdarg_T *cap));
134 static void	nv_g_cmd __ARGS((cmdarg_T *cap));
135 static void	n_opencmd __ARGS((cmdarg_T *cap));
136 static void	nv_dot __ARGS((cmdarg_T *cap));
137 static void	nv_redo __ARGS((cmdarg_T *cap));
138 static void	nv_Undo __ARGS((cmdarg_T *cap));
139 static void	nv_tilde __ARGS((cmdarg_T *cap));
140 static void	nv_operator __ARGS((cmdarg_T *cap));
141 static void	nv_lineop __ARGS((cmdarg_T *cap));
142 static void	nv_home __ARGS((cmdarg_T *cap));
143 static void	nv_pipe __ARGS((cmdarg_T *cap));
144 static void	nv_bck_word __ARGS((cmdarg_T *cap));
145 static void	nv_wordcmd __ARGS((cmdarg_T *cap));
146 static void	nv_beginline __ARGS((cmdarg_T *cap));
147 #ifdef FEAT_VISUAL
148 static void	adjust_for_sel __ARGS((cmdarg_T *cap));
149 static int	unadjust_for_sel __ARGS((void));
150 static void	nv_select __ARGS((cmdarg_T *cap));
151 #endif
152 static void	nv_goto __ARGS((cmdarg_T *cap));
153 static void	nv_normal __ARGS((cmdarg_T *cap));
154 static void	nv_esc __ARGS((cmdarg_T *oap));
155 static void	nv_edit __ARGS((cmdarg_T *cap));
156 static void	invoke_edit __ARGS((cmdarg_T *cap, int repl, int cmd, int startln));
157 #ifdef FEAT_TEXTOBJ
158 static void	nv_object __ARGS((cmdarg_T *cap));
159 #endif
160 static void	nv_record __ARGS((cmdarg_T *cap));
161 static void	nv_at __ARGS((cmdarg_T *cap));
162 static void	nv_halfpage __ARGS((cmdarg_T *cap));
163 static void	nv_join __ARGS((cmdarg_T *cap));
164 static void	nv_put __ARGS((cmdarg_T *cap));
165 static void	nv_open __ARGS((cmdarg_T *cap));
166 #ifdef FEAT_SNIFF
167 static void	nv_sniff __ARGS((cmdarg_T *cap));
168 #endif
169 #ifdef FEAT_NETBEANS_INTG
170 static void	nv_nbcmd __ARGS((cmdarg_T *cap));
171 #endif
172 #ifdef FEAT_DND
173 static void	nv_drop __ARGS((cmdarg_T *cap));
174 #endif
175 
176 /*
177  * Function to be called for a Normal or Visual mode command.
178  * The argument is a cmdarg_T.
179  */
180 typedef void (*nv_func_T) __ARGS((cmdarg_T *cap));
181 
182 /* Values for cmd_flags. */
183 #define NV_NCH	    0x01	  /* may need to get a second char */
184 #define NV_NCH_NOP  (0x02|NV_NCH) /* get second char when no operator pending */
185 #define NV_NCH_ALW  (0x04|NV_NCH) /* always get a second char */
186 #define NV_LANG	    0x08	/* second char needs language adjustment */
187 
188 #define NV_SS	    0x10	/* may start selection */
189 #define NV_SSS	    0x20	/* may start selection with shift modifier */
190 #define NV_STS	    0x40	/* may stop selection without shift modif. */
191 #define NV_RL	    0x80	/* 'rightleft' modifies command */
192 #define NV_KEEPREG  0x100	/* don't clear regname */
193 #define NV_NCW	    0x200	/* not allowed in command-line window */
194 
195 /*
196  * Generally speaking, every Normal mode command should either clear any
197  * pending operator (with *clearop*()), or set the motion type variable
198  * oap->motion_type.
199  *
200  * When a cursor motion command is made, it is marked as being a character or
201  * line oriented motion.  Then, if an operator is in effect, the operation
202  * becomes character or line oriented accordingly.
203  */
204 
205 /*
206  * This table contains one entry for every Normal or Visual mode command.
207  * The order doesn't matter, init_normal_cmds() will create a sorted index.
208  * It is faster when all keys from zero to '~' are present.
209  */
210 static const struct nv_cmd
211 {
212     int		cmd_char;	/* (first) command character */
213     nv_func_T   cmd_func;	/* function for this command */
214     short_u	cmd_flags;	/* NV_ flags */
215     short	cmd_arg;	/* value for ca.arg */
216 } nv_cmds[] =
217 {
218     {NUL,	nv_error,	0,			0},
219     {Ctrl_A,	nv_addsub,	0,			0},
220     {Ctrl_B,	nv_page,	NV_STS,			BACKWARD},
221     {Ctrl_C,	nv_esc,		0,			TRUE},
222     {Ctrl_D,	nv_halfpage,	0,			0},
223     {Ctrl_E,	nv_scroll_line,	0,			TRUE},
224     {Ctrl_F,	nv_page,	NV_STS,			FORWARD},
225     {Ctrl_G,	nv_ctrlg,	0,			0},
226     {Ctrl_H,	nv_ctrlh,	0,			0},
227     {Ctrl_I,	nv_pcmark,	0,			0},
228     {NL,	nv_down,	0,			FALSE},
229     {Ctrl_K,	nv_error,	0,			0},
230     {Ctrl_L,	nv_clear,	0,			0},
231     {CAR,	nv_down,	0,			TRUE},
232     {Ctrl_N,	nv_down,	NV_STS,			FALSE},
233     {Ctrl_O,	nv_ctrlo,	0,			0},
234     {Ctrl_P,	nv_up,		NV_STS,			FALSE},
235     {Ctrl_Q,	nv_ignore,	0,			0},
236     {Ctrl_R,	nv_redo,	0,			0},
237     {Ctrl_S,	nv_ignore,	0,			0},
238     {Ctrl_T,	nv_tagpop,	NV_NCW,			0},
239     {Ctrl_U,	nv_halfpage,	0,			0},
240 #ifdef FEAT_VISUAL
241     {Ctrl_V,	nv_visual,	0,			FALSE},
242     {'V',	nv_visual,	0,			FALSE},
243     {'v',	nv_visual,	0,			FALSE},
244 #else
245     {Ctrl_V,	nv_error,	0,			0},
246     {'V',	nv_error,	0,			0},
247     {'v',	nv_error,	0,			0},
248 #endif
249     {Ctrl_W,	nv_window,	0,			0},
250     {Ctrl_X,	nv_addsub,	0,			0},
251     {Ctrl_Y,	nv_scroll_line,	0,			FALSE},
252     {Ctrl_Z,	nv_suspend,	0,			0},
253     {ESC,	nv_esc,		0,			FALSE},
254     {Ctrl_BSL,	nv_normal,	NV_NCH_ALW,		0},
255     {Ctrl_RSB,	nv_ident,	NV_NCW,			0},
256     {Ctrl_HAT,	nv_hat,		NV_NCW,			0},
257     {Ctrl__,	nv_error,	0,			0},
258     {' ',	nv_right,	0,			0},
259     {'!',	nv_operator,	0,			0},
260     {'"',	nv_regname,	NV_NCH_NOP|NV_KEEPREG,	0},
261     {'#',	nv_ident,	0,			0},
262     {'$',	nv_dollar,	0,			0},
263     {'%',	nv_percent,	0,			0},
264     {'&',	nv_optrans,	0,			0},
265     {'\'',	nv_gomark,	NV_NCH_ALW,		TRUE},
266     {'(',	nv_brace,	0,			BACKWARD},
267     {')',	nv_brace,	0,			FORWARD},
268     {'*',	nv_ident,	0,			0},
269     {'+',	nv_down,	0,			TRUE},
270     {',',	nv_csearch,	0,			TRUE},
271     {'-',	nv_up,		0,			TRUE},
272     {'.',	nv_dot,		NV_KEEPREG,		0},
273     {'/',	nv_search,	0,			FALSE},
274     {'0',	nv_beginline,	0,			0},
275     {'1',	nv_ignore,	0,			0},
276     {'2',	nv_ignore,	0,			0},
277     {'3',	nv_ignore,	0,			0},
278     {'4',	nv_ignore,	0,			0},
279     {'5',	nv_ignore,	0,			0},
280     {'6',	nv_ignore,	0,			0},
281     {'7',	nv_ignore,	0,			0},
282     {'8',	nv_ignore,	0,			0},
283     {'9',	nv_ignore,	0,			0},
284     {':',	nv_colon,	0,			0},
285     {';',	nv_csearch,	0,			FALSE},
286     {'<',	nv_operator,	NV_RL,			0},
287     {'=',	nv_operator,	0,			0},
288     {'>',	nv_operator,	NV_RL,			0},
289     {'?',	nv_search,	0,			FALSE},
290     {'@',	nv_at,		NV_NCH_NOP,		FALSE},
291     {'A',	nv_edit,	0,			0},
292     {'B',	nv_bck_word,	0,			1},
293     {'C',	nv_abbrev,	NV_KEEPREG,		0},
294     {'D',	nv_abbrev,	NV_KEEPREG,		0},
295     {'E',	nv_wordcmd,	0,			TRUE},
296     {'F',	nv_csearch,	NV_NCH_ALW|NV_LANG,	BACKWARD},
297     {'G',	nv_goto,	0,			TRUE},
298     {'H',	nv_scroll,	0,			0},
299     {'I',	nv_edit,	0,			0},
300     {'J',	nv_join,	0,			0},
301     {'K',	nv_ident,	0,			0},
302     {'L',	nv_scroll,	0,			0},
303     {'M',	nv_scroll,	0,			0},
304     {'N',	nv_next,	0,			SEARCH_REV},
305     {'O',	nv_open,	0,			0},
306     {'P',	nv_put,		0,			0},
307     {'Q',	nv_exmode,	NV_NCW,			0},
308     {'R',	nv_Replace,	0,			FALSE},
309     {'S',	nv_subst,	NV_KEEPREG,		0},
310     {'T',	nv_csearch,	NV_NCH_ALW|NV_LANG,	BACKWARD},
311     {'U',	nv_Undo,	0,			0},
312     {'W',	nv_wordcmd,	0,			TRUE},
313     {'X',	nv_abbrev,	NV_KEEPREG,		0},
314     {'Y',	nv_abbrev,	NV_KEEPREG,		0},
315     {'Z',	nv_Zet,		NV_NCH_NOP|NV_NCW,	0},
316     {'[',	nv_brackets,	NV_NCH_ALW,		BACKWARD},
317     {'\\',	nv_error,	0,			0},
318     {']',	nv_brackets,	NV_NCH_ALW,		FORWARD},
319     {'^',	nv_beginline,	0,			BL_WHITE | BL_FIX},
320     {'_',	nv_lineop,	0,			0},
321     {'`',	nv_gomark,	NV_NCH_ALW,		FALSE},
322     {'a',	nv_edit,	NV_NCH,			0},
323     {'b',	nv_bck_word,	0,			0},
324     {'c',	nv_operator,	0,			0},
325     {'d',	nv_operator,	0,			0},
326     {'e',	nv_wordcmd,	0,			FALSE},
327     {'f',	nv_csearch,	NV_NCH_ALW|NV_LANG,	FORWARD},
328     {'g',	nv_g_cmd,	NV_NCH_ALW,		FALSE},
329     {'h',	nv_left,	NV_RL,			0},
330     {'i',	nv_edit,	NV_NCH,			0},
331     {'j',	nv_down,	0,			FALSE},
332     {'k',	nv_up,		0,			FALSE},
333     {'l',	nv_right,	NV_RL,			0},
334     {'m',	nv_mark,	NV_NCH_NOP,		0},
335     {'n',	nv_next,	0,			0},
336     {'o',	nv_open,	0,			0},
337     {'p',	nv_put,		0,			0},
338     {'q',	nv_record,	NV_NCH,			0},
339     {'r',	nv_replace,	NV_NCH_NOP|NV_LANG,	0},
340     {'s',	nv_subst,	NV_KEEPREG,		0},
341     {'t',	nv_csearch,	NV_NCH_ALW|NV_LANG,	FORWARD},
342     {'u',	nv_undo,	0,			0},
343     {'w',	nv_wordcmd,	0,			FALSE},
344     {'x',	nv_abbrev,	NV_KEEPREG,		0},
345     {'y',	nv_operator,	0,			0},
346     {'z',	nv_zet,		NV_NCH_ALW,		0},
347     {'{',	nv_findpar,	0,			BACKWARD},
348     {'|',	nv_pipe,	0,			0},
349     {'}',	nv_findpar,	0,			FORWARD},
350     {'~',	nv_tilde,	0,			0},
351 
352     /* pound sign */
353     {POUND,	nv_ident,	0,			0},
354 #ifdef FEAT_MOUSE
355     {K_MOUSEUP, nv_mousescroll,	0,			TRUE},
356     {K_MOUSEDOWN, nv_mousescroll, 0,			FALSE},
357     {K_LEFTMOUSE, nv_mouse,	0,			0},
358     {K_LEFTMOUSE_NM, nv_mouse,	0,			0},
359     {K_LEFTDRAG, nv_mouse,	0,			0},
360     {K_LEFTRELEASE, nv_mouse,	0,			0},
361     {K_LEFTRELEASE_NM, nv_mouse, 0,			0},
362     {K_MIDDLEMOUSE, nv_mouse,	0,			0},
363     {K_MIDDLEDRAG, nv_mouse,	0,			0},
364     {K_MIDDLERELEASE, nv_mouse,	0,			0},
365     {K_RIGHTMOUSE, nv_mouse,	0,			0},
366     {K_RIGHTDRAG, nv_mouse,	0,			0},
367     {K_RIGHTRELEASE, nv_mouse,	0,			0},
368     {K_X1MOUSE, nv_mouse,	0,			0},
369     {K_X1DRAG, nv_mouse,	0,			0},
370     {K_X1RELEASE, nv_mouse,	0,			0},
371     {K_X2MOUSE, nv_mouse,	0,			0},
372     {K_X2DRAG, nv_mouse,	0,			0},
373     {K_X2RELEASE, nv_mouse,	0,			0},
374 #endif
375     {K_IGNORE,	nv_ignore,	0,			0},
376     {K_INS,	nv_edit,	0,			0},
377     {K_KINS,	nv_edit,	0,			0},
378     {K_BS,	nv_ctrlh,	0,			0},
379     {K_UP,	nv_up,		NV_SSS|NV_STS,		FALSE},
380     {K_S_UP,	nv_page,	NV_SS,			BACKWARD},
381     {K_DOWN,	nv_down,	NV_SSS|NV_STS,		FALSE},
382     {K_S_DOWN,	nv_page,	NV_SS,			FORWARD},
383     {K_LEFT,	nv_left,	NV_SSS|NV_STS|NV_RL,	0},
384     {K_S_LEFT,	nv_bck_word,	NV_SS|NV_RL,		0},
385     {K_C_LEFT,	nv_bck_word,	NV_SSS|NV_RL|NV_STS,	1},
386     {K_RIGHT,	nv_right,	NV_SSS|NV_STS|NV_RL,	0},
387     {K_S_RIGHT,	nv_wordcmd,	NV_SS|NV_RL,		FALSE},
388     {K_C_RIGHT,	nv_wordcmd,	NV_SSS|NV_RL|NV_STS,	TRUE},
389     {K_PAGEUP,	nv_page,	NV_SSS|NV_STS,		BACKWARD},
390     {K_KPAGEUP,	nv_page,	NV_SSS|NV_STS,		BACKWARD},
391     {K_PAGEDOWN, nv_page,	NV_SSS|NV_STS,		FORWARD},
392     {K_KPAGEDOWN, nv_page,	NV_SSS|NV_STS,		FORWARD},
393     {K_END,	nv_end,		NV_SSS|NV_STS,		FALSE},
394     {K_KEND,	nv_end,		NV_SSS|NV_STS,		FALSE},
395     {K_XEND,	nv_end,		NV_SSS|NV_STS,		FALSE},
396     {K_S_END,	nv_end,		NV_SS,			FALSE},
397     {K_C_END,	nv_end,		NV_SSS|NV_STS,		TRUE},
398     {K_HOME,	nv_home,	NV_SSS|NV_STS,		0},
399     {K_KHOME,	nv_home,	NV_SSS|NV_STS,		0},
400     {K_XHOME,	nv_home,	NV_SSS|NV_STS,		0},
401     {K_S_HOME,	nv_home,	NV_SS,			0},
402     {K_C_HOME,	nv_goto,	NV_SSS|NV_STS,		FALSE},
403     {K_DEL,	nv_abbrev,	0,			0},
404     {K_KDEL,	nv_abbrev,	0,			0},
405     {K_UNDO,	nv_kundo,	0,			0},
406     {K_HELP,	nv_help,	NV_NCW,			0},
407     {K_F1,	nv_help,	NV_NCW,			0},
408     {K_XF1,	nv_help,	NV_NCW,			0},
409 #ifdef FEAT_VISUAL
410     {K_SELECT,	nv_select,	0,			0},
411 #endif
412 #ifdef FEAT_GUI
413     {K_VER_SCROLLBAR, nv_ver_scrollbar, 0,		0},
414     {K_HOR_SCROLLBAR, nv_hor_scrollbar, 0,		0},
415 #endif
416 #ifdef FEAT_FKMAP
417     {K_F8,	farsi_fkey,	0,			0},
418     {K_F9,	farsi_fkey,	0,			0},
419 #endif
420 #ifdef FEAT_SNIFF
421     {K_SNIFF,	nv_sniff,	0,			0},
422 #endif
423 #ifdef FEAT_NETBEANS_INTG
424     {K_F21,	nv_nbcmd,	NV_NCH_ALW,		0},
425 #endif
426 #ifdef FEAT_DND
427     {K_DROP,	nv_drop,	NV_STS,			0},
428 #endif
429 };
430 
431 /* Number of commands in nv_cmds[]. */
432 #define NV_CMDS_SIZE (sizeof(nv_cmds) / sizeof(struct nv_cmd))
433 
434 /* Sorted index of commands in nv_cmds[]. */
435 static short nv_cmd_idx[NV_CMDS_SIZE];
436 
437 /* The highest index for which
438  * nv_cmds[idx].cmd_char == nv_cmd_idx[nv_cmds[idx].cmd_char] */
439 static int nv_max_linear;
440 
441 /*
442  * Compare functions for qsort() below, that checks the command character
443  * through the index in nv_cmd_idx[].
444  */
445     static int
446 #ifdef __BORLANDC__
447 _RTLENTRYF
448 #endif
449 nv_compare(s1, s2)
450     const void	*s1;
451     const void	*s2;
452 {
453     int		c1, c2;
454 
455     /* The commands are sorted on absolute value. */
456     c1 = nv_cmds[*(const short *)s1].cmd_char;
457     c2 = nv_cmds[*(const short *)s2].cmd_char;
458     if (c1 < 0)
459 	c1 = -c1;
460     if (c2 < 0)
461 	c2 = -c2;
462     return c1 - c2;
463 }
464 
465 /*
466  * Initialize the nv_cmd_idx[] table.
467  */
468     void
469 init_normal_cmds()
470 {
471     int		i;
472 
473     /* Fill the index table with a one to one relation. */
474     for (i = 0; i < NV_CMDS_SIZE; ++i)
475 	nv_cmd_idx[i] = i;
476 
477     /* Sort the commands by the command character.  */
478     qsort((void *)&nv_cmd_idx, (size_t)NV_CMDS_SIZE, sizeof(short), nv_compare);
479 
480     /* Find the first entry that can't be indexed by the command character. */
481     for (i = 0; i < NV_CMDS_SIZE; ++i)
482 	if (i != nv_cmds[nv_cmd_idx[i]].cmd_char)
483 	    break;
484     nv_max_linear = i - 1;
485 }
486 
487 /*
488  * Search for a command in the commands table.
489  * Returns -1 for invalid command.
490  */
491     static int
492 find_command(cmdchar)
493     int		cmdchar;
494 {
495     int		i;
496     int		idx;
497     int		top, bot;
498     int		c;
499 
500 #ifdef FEAT_MBYTE
501     /* A multi-byte character is never a command. */
502     if (cmdchar >= 0x100)
503 	return -1;
504 #endif
505 
506     /* We use the absolute value of the character.  Special keys have a
507      * negative value, but are sorted on their absolute value. */
508     if (cmdchar < 0)
509 	cmdchar = -cmdchar;
510 
511     /* If the character is in the first part: The character is the index into
512      * nv_cmd_idx[]. */
513     if (cmdchar <= nv_max_linear)
514 	return nv_cmd_idx[cmdchar];
515 
516     /* Perform a binary search. */
517     bot = nv_max_linear + 1;
518     top = NV_CMDS_SIZE - 1;
519     idx = -1;
520     while (bot <= top)
521     {
522 	i = (top + bot) / 2;
523 	c = nv_cmds[nv_cmd_idx[i]].cmd_char;
524 	if (c < 0)
525 	    c = -c;
526 	if (cmdchar == c)
527 	{
528 	    idx = nv_cmd_idx[i];
529 	    break;
530 	}
531 	if (cmdchar > c)
532 	    bot = i + 1;
533 	else
534 	    top = i - 1;
535     }
536     return idx;
537 }
538 
539 /*
540  * Execute a command in Normal mode.
541  */
542 /*ARGSUSED*/
543     void
544 normal_cmd(oap, toplevel)
545     oparg_T	*oap;
546     int		toplevel;		/* TRUE when called from main() */
547 {
548     static long	opcount = 0;		/* ca.opcount saved here */
549     cmdarg_T	ca;			/* command arguments */
550     int		c;
551     int		ctrl_w = FALSE;		/* got CTRL-W command */
552     int		old_col = curwin->w_curswant;
553 #ifdef FEAT_CMDL_INFO
554     int		need_flushbuf;		/* need to call out_flush() */
555 #endif
556 #ifdef FEAT_VISUAL
557     pos_T	old_pos;		/* cursor position before command */
558     int		mapped_len;
559 #endif
560     static int	old_mapped_len = 0;
561     int		idx;
562 
563     vim_memset(&ca, 0, sizeof(ca));	/* also resets ca.retval */
564     ca.oap = oap;
565     ca.opcount = opcount;
566 
567 #ifdef FEAT_SNIFF
568     want_sniff_request = sniff_connected;
569 #endif
570 
571     /*
572      * If there is an operator pending, then the command we take this time
573      * will terminate it. Finish_op tells us to finish the operation before
574      * returning this time (unless the operation was cancelled).
575      */
576 #ifdef CURSOR_SHAPE
577     c = finish_op;
578 #endif
579     finish_op = (oap->op_type != OP_NOP);
580 #ifdef CURSOR_SHAPE
581     if (finish_op != c)
582     {
583 	ui_cursor_shape();		/* may show different cursor shape */
584 # ifdef FEAT_MOUSESHAPE
585 	update_mouseshape(-1);
586 # endif
587     }
588 #endif
589 
590     if (!finish_op && !oap->regname)
591 	ca.opcount = 0;
592 
593 #ifdef FEAT_VISUAL
594     mapped_len = typebuf_maplen();
595 #endif
596 
597     State = NORMAL_BUSY;
598 #ifdef USE_ON_FLY_SCROLL
599     dont_scroll = FALSE;	/* allow scrolling here */
600 #endif
601 
602     /*
603      * Get the command character from the user.
604      */
605     c = safe_vgetc();
606 
607 #ifdef FEAT_LANGMAP
608     LANGMAP_ADJUST(c, TRUE);
609 #endif
610 
611     /*
612      * If a mapping was started in Visual or Select mode, remember the length
613      * of the mapping.  This is used below to not return to Insert mode for as
614      * long as the mapping is being executed.
615      */
616     if (restart_edit == 0)
617 	old_mapped_len = 0;
618     else if (old_mapped_len
619 #ifdef FEAT_VISUAL
620 	    || (VIsual_active && mapped_len == 0 && typebuf_maplen() > 0)
621 #endif
622 	    )
623 	old_mapped_len = typebuf_maplen();
624 
625     if (c == NUL)
626 	c = K_ZERO;
627 
628 #ifdef FEAT_VISUAL
629     /*
630      * In Select mode, typed text replaces the selection.
631      */
632     if (VIsual_active
633 	    && VIsual_select
634 	    && (vim_isprintc(c) || c == NL || c == CAR || c == K_KENTER))
635     {
636 # ifdef FEAT_MBYTE
637 	char_u	    buf[MB_MAXBYTES + 1];
638 
639 	buf[(*mb_char2bytes)(c, buf)] = NUL;
640 # else
641 	char_u	    buf[2];
642 
643 	buf[0] = c;
644 	buf[1] = NUL;
645 # endif
646 	/* Fake a "c"hange command.
647 	 * Insert the typed character in the typeahead buffer, so that it will
648 	 * be mapped in Insert mode.  Required for ":lmap" to work.  May cause
649 	 * mapping a character from ":vnoremap"... */
650 	(void)ins_typebuf(buf, REMAP_YES, 0, !KeyTyped, FALSE);
651 	c = 'c';
652     }
653 #endif
654 
655 #ifdef FEAT_CMDL_INFO
656     need_flushbuf = add_to_showcmd(c);
657 #endif
658 
659 getcount:
660 #ifdef FEAT_VISUAL
661     if (!(VIsual_active && VIsual_select))
662 #endif
663     {
664 	/*
665 	 * Handle a count before a command and compute ca.count0.
666 	 * Note that '0' is a command and not the start of a count, but it's
667 	 * part of a count after other digits.
668 	 */
669 	while (    (c >= '1' && c <= '9')
670 		|| (ca.count0 != 0 && (c == K_DEL || c == K_KDEL || c == '0')))
671 	{
672 	    if (c == K_DEL || c == K_KDEL)
673 	    {
674 		ca.count0 /= 10;
675 #ifdef FEAT_CMDL_INFO
676 		del_from_showcmd(4);	/* delete the digit and ~@% */
677 #endif
678 	    }
679 	    else
680 		ca.count0 = ca.count0 * 10 + (c - '0');
681 	    if (ca.count0 < 0)	    /* got too large! */
682 		ca.count0 = 999999999L;
683 	    if (ctrl_w)
684 	    {
685 		++no_mapping;
686 		++allow_keys;		/* no mapping for nchar, but keys */
687 	    }
688 	    ++no_zero_mapping;		/* don't map zero here */
689 	    c = safe_vgetc();
690 #ifdef FEAT_LANGMAP
691 	    LANGMAP_ADJUST(c, TRUE);
692 #endif
693 	    --no_zero_mapping;
694 	    if (ctrl_w)
695 	    {
696 		--no_mapping;
697 		--allow_keys;
698 	    }
699 #ifdef FEAT_CMDL_INFO
700 	    need_flushbuf |= add_to_showcmd(c);
701 #endif
702 	}
703 
704 	/*
705 	 * If we got CTRL-W there may be a/another count
706 	 */
707 	if (c == Ctrl_W && !ctrl_w && oap->op_type == OP_NOP)
708 	{
709 	    ctrl_w = TRUE;
710 	    ca.opcount = ca.count0;	/* remember first count */
711 	    ca.count0 = 0;
712 	    ++no_mapping;
713 	    ++allow_keys;		/* no mapping for nchar, but keys */
714 	    c = safe_vgetc();		/* get next character */
715 #ifdef FEAT_LANGMAP
716 	    LANGMAP_ADJUST(c, TRUE);
717 #endif
718 	    --no_mapping;
719 	    --allow_keys;
720 #ifdef FEAT_CMDL_INFO
721 	    need_flushbuf |= add_to_showcmd(c);
722 #endif
723 	    goto getcount;		/* jump back */
724 	}
725     }
726 
727     /*
728      * If we're in the middle of an operator (including after entering a yank
729      * buffer with '"') AND we had a count before the operator, then that
730      * count overrides the current value of ca.count0.
731      * What this means effectively, is that commands like "3dw" get turned
732      * into "d3w" which makes things fall into place pretty neatly.
733      * If you give a count before AND after the operator, they are multiplied.
734      */
735     if (ca.opcount != 0)
736     {
737 	if (ca.count0)
738 	    ca.count0 *= ca.opcount;
739 	else
740 	    ca.count0 = ca.opcount;
741     }
742 
743     /*
744      * Always remember the count.  It will be set to zero (on the next call,
745      * above) when there is no pending operator.
746      * When called from main(), save the count for use by the "count" built-in
747      * variable.
748      */
749     ca.opcount = ca.count0;
750     ca.count1 = (ca.count0 == 0 ? 1 : ca.count0);
751 
752 #ifdef FEAT_EVAL
753     /*
754      * Only set v:count when called from main() and not a stuffed command.
755      */
756     if (toplevel && stuff_empty())
757 	set_vcount(ca.count0, ca.count1);
758 #endif
759 
760     /*
761      * Find the command character in the table of commands.
762      * For CTRL-W we already got nchar when looking for a count.
763      */
764     if (ctrl_w)
765     {
766 	ca.nchar = c;
767 	ca.cmdchar = Ctrl_W;
768     }
769     else
770 	ca.cmdchar = c;
771     idx = find_command(ca.cmdchar);
772     if (idx < 0)
773     {
774 	/* Not a known command: beep. */
775 	clearopbeep(oap);
776 	goto normal_end;
777     }
778 #ifdef FEAT_CMDWIN
779     if (cmdwin_type != 0 && (nv_cmds[idx].cmd_flags & NV_NCW))
780     {
781 	/* This command is not allowed in the cmdline window: beep. */
782 	clearopbeep(oap);
783 	EMSG(_(e_cmdwin));
784 	goto normal_end;
785     }
786 #endif
787 
788 #ifdef FEAT_VISUAL
789     /*
790      * In Visual/Select mode, a few keys are handled in a special way.
791      */
792     if (VIsual_active)
793     {
794 	/* when 'keymodel' contains "stopsel" may stop Select/Visual mode */
795 	if (km_stopsel
796 		&& (nv_cmds[idx].cmd_flags & NV_STS)
797 		&& !(mod_mask & MOD_MASK_SHIFT))
798 	{
799 	    end_visual_mode();
800 	    redraw_curbuf_later(INVERTED);
801 	}
802 
803 	/* Keys that work different when 'keymodel' contains "startsel" */
804 	if (km_startsel)
805 	{
806 	    if (nv_cmds[idx].cmd_flags & NV_SS)
807 	    {
808 		unshift_special(&ca);
809 		idx = find_command(ca.cmdchar);
810 	    }
811 	    else if ((nv_cmds[idx].cmd_flags & NV_SSS)
812 					       && (mod_mask & MOD_MASK_SHIFT))
813 	    {
814 		mod_mask &= ~MOD_MASK_SHIFT;
815 	    }
816 	}
817     }
818 #endif
819 
820 #ifdef FEAT_RIGHTLEFT
821     if (curwin->w_p_rl && KeyTyped && !KeyStuffed
822 					  && (nv_cmds[idx].cmd_flags & NV_RL))
823     {
824 	/* Invert horizontal movements and operations.  Only when typed by the
825 	 * user directly, not when the result of a mapping or "x" translated
826 	 * to "dl". */
827 	switch (ca.cmdchar)
828 	{
829 	    case 'l':	    ca.cmdchar = 'h'; break;
830 	    case K_RIGHT:   ca.cmdchar = K_LEFT; break;
831 	    case K_S_RIGHT: ca.cmdchar = K_S_LEFT; break;
832 	    case K_C_RIGHT: ca.cmdchar = K_C_LEFT; break;
833 	    case 'h':	    ca.cmdchar = 'l'; break;
834 	    case K_LEFT:    ca.cmdchar = K_RIGHT; break;
835 	    case K_S_LEFT:  ca.cmdchar = K_S_RIGHT; break;
836 	    case K_C_LEFT:  ca.cmdchar = K_C_RIGHT; break;
837 	    case '>':	    ca.cmdchar = '<'; break;
838 	    case '<':	    ca.cmdchar = '>'; break;
839 	}
840 	idx = find_command(ca.cmdchar);
841     }
842 #endif
843 
844     /*
845      * Get an additional character if we need one.
846      */
847     if ((nv_cmds[idx].cmd_flags & NV_NCH)
848 	    && (((nv_cmds[idx].cmd_flags & NV_NCH_NOP) == NV_NCH_NOP
849 		    && oap->op_type == OP_NOP)
850 		|| (nv_cmds[idx].cmd_flags & NV_NCH_ALW) == NV_NCH_ALW
851 		|| (ca.cmdchar == 'q'
852 		    && oap->op_type == OP_NOP
853 		    && !Recording
854 		    && !Exec_reg)
855 		|| ((ca.cmdchar == 'a' || ca.cmdchar == 'i')
856 		    && (oap->op_type != OP_NOP
857 #ifdef FEAT_VISUAL
858 			|| VIsual_active
859 #endif
860 		       ))))
861     {
862 	int	*cp;
863 	int	repl = FALSE;	/* get character for replace mode */
864 	int	lit = FALSE;	/* get extra character literally */
865 	int	langmap_active = FALSE;    /* using :lmap mappings */
866 	int	lang;		/* getting a text character */
867 #ifdef USE_IM_CONTROL
868 	int	save_smd;	/* saved value of p_smd */
869 #endif
870 
871 	++no_mapping;
872 	++allow_keys;		/* no mapping for nchar, but allow key codes */
873 	if (ca.cmdchar == 'g')
874 	{
875 	    /*
876 	     * For 'g' get the next character now, so that we can check for
877 	     * "gr", "g'" and "g`".
878 	     */
879 	    ca.nchar = safe_vgetc();
880 #ifdef FEAT_LANGMAP
881 	    LANGMAP_ADJUST(ca.nchar, TRUE);
882 #endif
883 #ifdef FEAT_CMDL_INFO
884 	    need_flushbuf |= add_to_showcmd(ca.nchar);
885 #endif
886 	    if (ca.nchar == 'r' || ca.nchar == '\'' || ca.nchar == '`'
887 						      || ca.nchar == Ctrl_BSL)
888 	    {
889 		cp = &ca.extra_char;	/* need to get a third character */
890 		if (ca.nchar != 'r')
891 		    lit = TRUE;			/* get it literally */
892 		else
893 		    repl = TRUE;		/* get it in replace mode */
894 	    }
895 	    else
896 		cp = NULL;		/* no third character needed */
897 	}
898 	else
899 	{
900 	    if (ca.cmdchar == 'r')		/* get it in replace mode */
901 		repl = TRUE;
902 	    cp = &ca.nchar;
903 	}
904 	lang = (repl || (nv_cmds[idx].cmd_flags & NV_LANG));
905 
906 	/*
907 	 * Get a second or third character.
908 	 */
909 	if (cp != NULL)
910 	{
911 #ifdef CURSOR_SHAPE
912 	    if (repl)
913 	    {
914 		State = REPLACE;	/* pretend Replace mode */
915 		ui_cursor_shape();	/* show different cursor shape */
916 	    }
917 #endif
918 	    if (lang && curbuf->b_p_iminsert == B_IMODE_LMAP)
919 	    {
920 		/* Allow mappings defined with ":lmap". */
921 		--no_mapping;
922 		--allow_keys;
923 		if (repl)
924 		    State = LREPLACE;
925 		else
926 		    State = LANGMAP;
927 		langmap_active = TRUE;
928 	    }
929 #ifdef USE_IM_CONTROL
930 	    save_smd = p_smd;
931 	    p_smd = FALSE;	/* Don't let the IM code show the mode here */
932 	    if (lang && curbuf->b_p_iminsert == B_IMODE_IM)
933 		im_set_active(TRUE);
934 #endif
935 
936 	    *cp = safe_vgetc();
937 
938 	    if (langmap_active)
939 	    {
940 		/* Undo the decrement done above */
941 		++no_mapping;
942 		++allow_keys;
943 		State = NORMAL_BUSY;
944 	    }
945 #ifdef USE_IM_CONTROL
946 	    if (lang)
947 	    {
948 		if (curbuf->b_p_iminsert != B_IMODE_LMAP)
949 		    im_save_status(&curbuf->b_p_iminsert);
950 		im_set_active(FALSE);
951 	    }
952 	    p_smd = save_smd;
953 #endif
954 #ifdef CURSOR_SHAPE
955 	    State = NORMAL_BUSY;
956 #endif
957 #ifdef FEAT_CMDL_INFO
958 	    need_flushbuf |= add_to_showcmd(*cp);
959 #endif
960 
961 	    if (!lit)
962 	    {
963 #ifdef FEAT_DIGRAPHS
964 		/* Typing CTRL-K gets a digraph. */
965 		if (*cp == Ctrl_K
966 			&& ((nv_cmds[idx].cmd_flags & NV_LANG)
967 			    || cp == &ca.extra_char)
968 			&& vim_strchr(p_cpo, CPO_DIGRAPH) == NULL)
969 		{
970 		    c = get_digraph(FALSE);
971 		    if (c > 0)
972 		    {
973 			*cp = c;
974 # ifdef FEAT_CMDL_INFO
975 			/* Guessing how to update showcmd here... */
976 			del_from_showcmd(3);
977 			need_flushbuf |= add_to_showcmd(*cp);
978 # endif
979 		    }
980 		}
981 #endif
982 
983 #ifdef FEAT_LANGMAP
984 		/* adjust chars > 127, except after "tTfFr" commands */
985 		LANGMAP_ADJUST(*cp, !lang);
986 #endif
987 #ifdef FEAT_RIGHTLEFT
988 		/* adjust Hebrew mapped char */
989 		if (p_hkmap && lang && KeyTyped)
990 		    *cp = hkmap(*cp);
991 # ifdef FEAT_FKMAP
992 		/* adjust Farsi mapped char */
993 		if (p_fkmap && lang && KeyTyped)
994 		    *cp = fkmap(*cp);
995 # endif
996 #endif
997 	    }
998 
999 	    /*
1000 	     * When the next character is CTRL-\ a following CTRL-N means the
1001 	     * command is aborted and we go to Normal mode.
1002 	     */
1003 	    if (cp == &ca.extra_char
1004 		    && ca.nchar == Ctrl_BSL
1005 		    && (ca.extra_char == Ctrl_N || ca.extra_char == Ctrl_G))
1006 	    {
1007 		ca.cmdchar = Ctrl_BSL;
1008 		ca.nchar = ca.extra_char;
1009 		idx = find_command(ca.cmdchar);
1010 	    }
1011 	    else if (*cp == Ctrl_BSL)
1012 	    {
1013 		long towait = (p_ttm >= 0 ? p_ttm : p_tm);
1014 
1015 		/* There is a busy wait here when typing "f<C-\>" and then
1016 		 * something different from CTRL-N.  Can't be avoided. */
1017 		while ((c = vpeekc()) <= 0 && towait > 0L)
1018 		{
1019 		    do_sleep(towait > 50L ? 50L : towait);
1020 		    towait -= 50L;
1021 		}
1022 		if (c > 0)
1023 		{
1024 		    c = safe_vgetc();
1025 		    if (c != Ctrl_N && c != Ctrl_G)
1026 			vungetc(c);
1027 		    else
1028 		    {
1029 			ca.cmdchar = Ctrl_BSL;
1030 			ca.nchar = c;
1031 			idx = find_command(ca.cmdchar);
1032 		    }
1033 		}
1034 	    }
1035 
1036 #ifdef FEAT_MBYTE
1037 	    /* When getting a text character and the next character is a
1038 	     * multi-byte character, it could be a composing character.
1039 	     * However, don't wait for it to arrive. */
1040 	    while (enc_utf8 && lang && (c = vpeekc()) > 0
1041 				 && (c >= 0x100 || MB_BYTE2LEN(vpeekc()) > 1))
1042 	    {
1043 		c = safe_vgetc();
1044 		if (!utf_iscomposing(c))
1045 		{
1046 		    vungetc(c);		/* it wasn't, put it back */
1047 		    break;
1048 		}
1049 		else if (ca.ncharC1 == 0)
1050 		    ca.ncharC1 = c;
1051 		else
1052 		    ca.ncharC2 = c;
1053 	    }
1054 #endif
1055 	}
1056 	--no_mapping;
1057 	--allow_keys;
1058     }
1059 
1060 #ifdef FEAT_CMDL_INFO
1061     /*
1062      * Flush the showcmd characters onto the screen so we can see them while
1063      * the command is being executed.  Only do this when the shown command was
1064      * actually displayed, otherwise this will slow down a lot when executing
1065      * mappings.
1066      */
1067     if (need_flushbuf)
1068 	out_flush();
1069 #endif
1070 
1071     State = NORMAL;
1072 
1073     if (ca.nchar == ESC)
1074     {
1075 	clearop(oap);
1076 	if (restart_edit == 0 && goto_im())
1077 	    restart_edit = 'a';
1078 	goto normal_end;
1079     }
1080 
1081     msg_didout = FALSE;	    /* don't scroll screen up for normal command */
1082     msg_col = 0;
1083 
1084 #ifdef FEAT_VISUAL
1085     old_pos = curwin->w_cursor;		/* remember where cursor was */
1086 
1087     /* When 'keymodel' contains "startsel" some keys start Select/Visual
1088      * mode. */
1089     if (!VIsual_active && km_startsel)
1090     {
1091 	if (nv_cmds[idx].cmd_flags & NV_SS)
1092 	{
1093 	    start_selection();
1094 	    unshift_special(&ca);
1095 	    idx = find_command(ca.cmdchar);
1096 	}
1097 	else if ((nv_cmds[idx].cmd_flags & NV_SSS)
1098 					   && (mod_mask & MOD_MASK_SHIFT))
1099 	{
1100 	    start_selection();
1101 	    mod_mask &= ~MOD_MASK_SHIFT;
1102 	}
1103     }
1104 #endif
1105 
1106     /*
1107      * Execute the command!
1108      * Call the command function found in the commands table.
1109      */
1110     ca.arg = nv_cmds[idx].cmd_arg;
1111     (nv_cmds[idx].cmd_func)(&ca);
1112 
1113     /*
1114      * If we didn't start or finish an operator, reset oap->regname, unless we
1115      * need it later.
1116      */
1117     if (!finish_op
1118 	    && !oap->op_type
1119 	    && (idx < 0 || !(nv_cmds[idx].cmd_flags & NV_KEEPREG)))
1120     {
1121 	clearop(oap);
1122 #ifdef FEAT_EVAL
1123 	set_reg_var('"');
1124 #endif
1125     }
1126 
1127     /*
1128      * If an operation is pending, handle it...
1129      */
1130     do_pending_operator(&ca, old_col, FALSE);
1131 
1132     /*
1133      * Wait for a moment when a message is displayed that will be overwritten
1134      * by the mode message.
1135      * In Visual mode and with "^O" in Insert mode, a short message will be
1136      * overwritten by the mode message.  Wait a bit, until a key is hit.
1137      * In Visual mode, it's more important to keep the Visual area updated
1138      * than keeping a message (e.g. from a /pat search).
1139      * Only do this if the command was typed, not from a mapping.
1140      * Don't wait when emsg_silent is non-zero.
1141      * Also wait a bit after an error message, e.g. for "^O:".
1142      * Don't redraw the screen, it would remove the message.
1143      */
1144     if (       ((p_smd
1145 		    && (restart_edit != 0
1146 #ifdef FEAT_VISUAL
1147 			|| (VIsual_active
1148 			    && old_pos.lnum == curwin->w_cursor.lnum
1149 			    && old_pos.col == curwin->w_cursor.col)
1150 #endif
1151 		       )
1152 		    && (clear_cmdline
1153 			|| redraw_cmdline)
1154 		    && (msg_didout || (msg_didany && msg_scroll))
1155 		    && !msg_nowait
1156 		    && KeyTyped)
1157 		|| (restart_edit != 0
1158 #ifdef FEAT_VISUAL
1159 		    && !VIsual_active
1160 #endif
1161 		    && (msg_scroll
1162 			|| emsg_on_display)))
1163 	    && oap->regname == 0
1164 	    && !(ca.retval & CA_COMMAND_BUSY)
1165 	    && stuff_empty()
1166 	    && typebuf_typed()
1167 	    && emsg_silent == 0
1168 	    && !did_wait_return
1169 	    && oap->op_type == OP_NOP)
1170     {
1171 	int	save_State = State;
1172 
1173 	/* Draw the cursor with the right shape here */
1174 	if (restart_edit != 0)
1175 	    State = INSERT;
1176 
1177 	/* If need to redraw, and there is a "keep_msg", redraw before the
1178 	 * delay */
1179 	if (must_redraw && keep_msg != NULL && !emsg_on_display)
1180 	{
1181 	    char_u	*kmsg;
1182 
1183 	    kmsg = keep_msg;
1184 	    keep_msg = NULL;
1185 	    /* showmode() will clear keep_msg, but we want to use it anyway */
1186 	    update_screen(0);
1187 	    /* now reset it, otherwise it's put in the history again */
1188 	    keep_msg = kmsg;
1189 	    msg_attr(kmsg, keep_msg_attr);
1190 	    vim_free(kmsg);
1191 	}
1192 	setcursor();
1193 	cursor_on();
1194 	out_flush();
1195 	if (msg_scroll || emsg_on_display)
1196 	    ui_delay(1000L, TRUE);	/* wait at least one second */
1197 	ui_delay(3000L, FALSE);		/* wait up to three seconds */
1198 	State = save_State;
1199 
1200 	msg_scroll = FALSE;
1201 	emsg_on_display = FALSE;
1202     }
1203 
1204     /*
1205      * Finish up after executing a Normal mode command.
1206      */
1207 normal_end:
1208 
1209     msg_nowait = FALSE;
1210 
1211     /* Reset finish_op, in case it was set */
1212 #ifdef CURSOR_SHAPE
1213     c = finish_op;
1214 #endif
1215     finish_op = FALSE;
1216 #ifdef CURSOR_SHAPE
1217     /* Redraw the cursor with another shape, if we were in Operator-pending
1218      * mode or did a replace command. */
1219     if (c || ca.cmdchar == 'r')
1220     {
1221 	ui_cursor_shape();		/* may show different cursor shape */
1222 # ifdef FEAT_MOUSESHAPE
1223 	update_mouseshape(-1);
1224 # endif
1225     }
1226 #endif
1227 
1228 #ifdef FEAT_CMDL_INFO
1229     if (oap->op_type == OP_NOP && oap->regname == 0)
1230 	clear_showcmd();
1231 #endif
1232 
1233     checkpcmark();		/* check if we moved since setting pcmark */
1234     vim_free(ca.searchbuf);
1235 
1236 #ifdef FEAT_MBYTE
1237     if (has_mbyte)
1238 	mb_adjust_cursor();
1239 #endif
1240 
1241 #ifdef FEAT_SCROLLBIND
1242     if (curwin->w_p_scb && toplevel)
1243     {
1244 	validate_cursor();	/* may need to update w_leftcol */
1245 	do_check_scrollbind(TRUE);
1246     }
1247 #endif
1248 
1249     /*
1250      * May restart edit(), if we got here with CTRL-O in Insert mode (but not
1251      * if still inside a mapping that started in Visual mode).
1252      * May switch from Visual to Select mode after CTRL-O command.
1253      */
1254     if (       oap->op_type == OP_NOP
1255 #ifdef FEAT_VISUAL
1256 	    && ((restart_edit != 0 && !VIsual_active && old_mapped_len == 0)
1257 		|| restart_VIsual_select == 1)
1258 #endif
1259 	    && !(ca.retval & CA_COMMAND_BUSY)
1260 	    && stuff_empty()
1261 	    && oap->regname == 0)
1262     {
1263 #ifdef FEAT_VISUAL
1264 	if (restart_VIsual_select == 1)
1265 	{
1266 	    VIsual_select = TRUE;
1267 	    showmode();
1268 	    restart_VIsual_select = 0;
1269 	}
1270 #endif
1271 	if (restart_edit != 0
1272 #ifdef FEAT_VISUAL
1273 		&& !VIsual_active
1274 #endif
1275 		&& old_mapped_len == 0)
1276 	    (void)edit(restart_edit, FALSE, 1L);
1277     }
1278 
1279 #ifdef FEAT_VISUAL
1280     if (restart_VIsual_select == 2)
1281 	restart_VIsual_select = 1;
1282 #endif
1283 
1284     /* Save count before an operator for next time. */
1285     opcount = ca.opcount;
1286 }
1287 
1288 /*
1289  * Handle an operator after visual mode or when the movement is finished
1290  */
1291     void
1292 do_pending_operator(cap, old_col, gui_yank)
1293     cmdarg_T	*cap;
1294     int		old_col;
1295     int		gui_yank;
1296 {
1297     oparg_T	*oap = cap->oap;
1298     pos_T	old_cursor;
1299     int		empty_region_error;
1300     int		restart_edit_save;
1301 
1302 #ifdef FEAT_VISUAL
1303     /* The visual area is remembered for redo */
1304     static int	    redo_VIsual_mode = NUL; /* 'v', 'V', or Ctrl-V */
1305     static linenr_T redo_VIsual_line_count; /* number of lines */
1306     static colnr_T  redo_VIsual_col;	    /* number of cols or end column */
1307     static long	    redo_VIsual_count;	    /* count for Visual operator */
1308 # ifdef FEAT_VIRTUALEDIT
1309     int		    include_line_break = FALSE;
1310 # endif
1311 #endif
1312 
1313 #if defined(FEAT_CLIPBOARD)
1314     /*
1315      * Yank the visual area into the GUI selection register before we operate
1316      * on it and lose it forever.
1317      * Don't do it if a specific register was specified, so that ""x"*P works.
1318      * This could call do_pending_operator() recursively, but that's OK
1319      * because gui_yank will be TRUE for the nested call.
1320      */
1321     if (clip_star.available
1322 	    && oap->op_type != OP_NOP
1323 	    && !gui_yank
1324 # ifdef FEAT_VISUAL
1325 	    && VIsual_active
1326 	    && !redo_VIsual_busy
1327 # endif
1328 	    && oap->regname == 0)
1329 	clip_auto_select();
1330 #endif
1331     old_cursor = curwin->w_cursor;
1332 
1333     /*
1334      * If an operation is pending, handle it...
1335      */
1336     if ((finish_op
1337 #ifdef FEAT_VISUAL
1338 		|| VIsual_active
1339 #endif
1340 		) && oap->op_type != OP_NOP)
1341     {
1342 #ifdef FEAT_VISUAL
1343 	oap->is_VIsual = VIsual_active;
1344 	if (oap->motion_force == 'V')
1345 	    oap->motion_type = MLINE;
1346 	else if (oap->motion_force == 'v')
1347 	{
1348 	    /* If the motion was linewise, "inclusive" will not have been set.
1349 	     * Use "exclusive" to be consistent.  Makes "dvj" work nice. */
1350 	    if (oap->motion_type == MLINE)
1351 		oap->inclusive = FALSE;
1352 	    /* If the motion already was characterwise, toggle "inclusive" */
1353 	    else if (oap->motion_type == MCHAR)
1354 		oap->inclusive = !oap->inclusive;
1355 	    oap->motion_type = MCHAR;
1356 	}
1357 	else if (oap->motion_force == Ctrl_V)
1358 	{
1359 	    /* Change line- or characterwise motion into Visual block mode. */
1360 	    VIsual_active = TRUE;
1361 	    VIsual = oap->start;
1362 	    VIsual_mode = Ctrl_V;
1363 	    VIsual_select = FALSE;
1364 	    VIsual_reselect = FALSE;
1365 	}
1366 #endif
1367 
1368 	/* only redo yank when 'y' flag is in 'cpoptions' */
1369 	/* never redo "zf" (define fold) */
1370 	if ((vim_strchr(p_cpo, CPO_YANK) != NULL || oap->op_type != OP_YANK)
1371 #ifdef FEAT_VISUAL
1372 		&& (!VIsual_active || oap->motion_force)
1373 #endif
1374 #ifdef FEAT_FOLDING
1375 		&& oap->op_type != OP_FOLD
1376 		&& oap->op_type != OP_FOLDOPEN
1377 		&& oap->op_type != OP_FOLDOPENREC
1378 		&& oap->op_type != OP_FOLDCLOSE
1379 		&& oap->op_type != OP_FOLDCLOSEREC
1380 		&& oap->op_type != OP_FOLDDEL
1381 		&& oap->op_type != OP_FOLDDELREC
1382 #endif
1383 		)
1384 	{
1385 	    prep_redo(oap->regname, cap->count0,
1386 		    get_op_char(oap->op_type), get_extra_op_char(oap->op_type),
1387 		    oap->motion_force, cap->cmdchar, cap->nchar);
1388 	    if (cap->cmdchar == '/' || cap->cmdchar == '?') /* was a search */
1389 	    {
1390 		/*
1391 		 * If 'cpoptions' does not contain 'r', insert the search
1392 		 * pattern to really repeat the same command.
1393 		 */
1394 		if (vim_strchr(p_cpo, CPO_REDO) == NULL)
1395 		    AppendToRedobuffLit(cap->searchbuf);
1396 		AppendToRedobuff(NL_STR);
1397 	    }
1398 	    else if (cap->cmdchar == ':')
1399 	    {
1400 		/* do_cmdline() has stored the first typed line in
1401 		 * "repeat_cmdline".  When several lines are typed repeating
1402 		 * won't be possible. */
1403 		if (repeat_cmdline == NULL)
1404 		    ResetRedobuff();
1405 		else
1406 		{
1407 		    AppendToRedobuffLit(repeat_cmdline);
1408 		    AppendToRedobuff(NL_STR);
1409 		    vim_free(repeat_cmdline);
1410 		    repeat_cmdline = NULL;
1411 		}
1412 	    }
1413 	}
1414 
1415 #ifdef FEAT_VISUAL
1416 	if (redo_VIsual_busy)
1417 	{
1418 	    oap->start = curwin->w_cursor;
1419 	    curwin->w_cursor.lnum += redo_VIsual_line_count - 1;
1420 	    if (curwin->w_cursor.lnum > curbuf->b_ml.ml_line_count)
1421 		curwin->w_cursor.lnum = curbuf->b_ml.ml_line_count;
1422 	    VIsual_mode = redo_VIsual_mode;
1423 	    if (VIsual_mode == 'v')
1424 	    {
1425 		if (redo_VIsual_line_count <= 1)
1426 		    curwin->w_cursor.col += redo_VIsual_col - 1;
1427 		else
1428 		    curwin->w_cursor.col = redo_VIsual_col;
1429 	    }
1430 	    if (redo_VIsual_col == MAXCOL)
1431 	    {
1432 		curwin->w_curswant = MAXCOL;
1433 		coladvance((colnr_T)MAXCOL);
1434 	    }
1435 	    cap->count0 = redo_VIsual_count;
1436 	    if (redo_VIsual_count != 0)
1437 		cap->count1 = redo_VIsual_count;
1438 	    else
1439 		cap->count1 = 1;
1440 	}
1441 	else if (VIsual_active)
1442 	{
1443 	    /* Save the current VIsual area for '< and '> marks, and "gv" */
1444 	    curbuf->b_visual_start = VIsual;
1445 	    curbuf->b_visual_end = curwin->w_cursor;
1446 	    curbuf->b_visual_mode = VIsual_mode;
1447 # ifdef FEAT_EVAL
1448 	    curbuf->b_visual_mode_eval = VIsual_mode;
1449 # endif
1450 	    curbuf->b_visual_curswant = curwin->w_curswant;
1451 
1452 	    /* In Select mode, a linewise selection is operated upon like a
1453 	     * characterwise selection. */
1454 	    if (VIsual_select && VIsual_mode == 'V')
1455 	    {
1456 		if (lt(VIsual, curwin->w_cursor))
1457 		{
1458 		    VIsual.col = 0;
1459 		    curwin->w_cursor.col =
1460 			       (colnr_T)STRLEN(ml_get(curwin->w_cursor.lnum));
1461 		}
1462 		else
1463 		{
1464 		    curwin->w_cursor.col = 0;
1465 		    VIsual.col = (colnr_T)STRLEN(ml_get(VIsual.lnum));
1466 		}
1467 		VIsual_mode = 'v';
1468 	    }
1469 	    /* If 'selection' is "exclusive", backup one character for
1470 	     * charwise selections. */
1471 	    else if (VIsual_mode == 'v')
1472 	    {
1473 # ifdef FEAT_VIRTUALEDIT
1474 		include_line_break =
1475 # endif
1476 		    unadjust_for_sel();
1477 	    }
1478 
1479 	    oap->start = VIsual;
1480 	    if (VIsual_mode == 'V')
1481 		oap->start.col = 0;
1482 	}
1483 #endif /* FEAT_VISUAL */
1484 
1485 	/*
1486 	 * Set oap->start to the first position of the operated text, oap->end
1487 	 * to the end of the operated text.  w_cursor is equal to oap->start.
1488 	 */
1489 	if (lt(oap->start, curwin->w_cursor))
1490 	{
1491 #ifdef FEAT_FOLDING
1492 	    /* Include folded lines completely. */
1493 	    if (!VIsual_active)
1494 	    {
1495 		if (hasFolding(oap->start.lnum, &oap->start.lnum, NULL))
1496 		    oap->start.col = 0;
1497 		if (hasFolding(curwin->w_cursor.lnum, NULL,
1498 						      &curwin->w_cursor.lnum))
1499 		    curwin->w_cursor.col = (colnr_T)STRLEN(ml_get_curline());
1500 	    }
1501 #endif
1502 	    oap->end = curwin->w_cursor;
1503 	    curwin->w_cursor = oap->start;
1504 
1505 	    /* w_virtcol may have been updated; if the cursor goes back to its
1506 	     * previous position w_virtcol becomes invalid and isn't updated
1507 	     * automatically. */
1508 	    curwin->w_valid &= ~VALID_VIRTCOL;
1509 	}
1510 	else
1511 	{
1512 #ifdef FEAT_FOLDING
1513 	    /* Include folded lines completely. */
1514 	    if (!VIsual_active && oap->motion_type == MLINE)
1515 	    {
1516 		if (hasFolding(curwin->w_cursor.lnum, &curwin->w_cursor.lnum,
1517 									NULL))
1518 		    curwin->w_cursor.col = 0;
1519 		if (hasFolding(oap->start.lnum, NULL, &oap->start.lnum))
1520 		    oap->start.col = (colnr_T)STRLEN(ml_get(oap->start.lnum));
1521 	    }
1522 #endif
1523 	    oap->end = oap->start;
1524 	    oap->start = curwin->w_cursor;
1525 	}
1526 
1527 	oap->line_count = oap->end.lnum - oap->start.lnum + 1;
1528 
1529 #ifdef FEAT_VIRTUALEDIT
1530 	/* Set "virtual_op" before resetting VIsual_active. */
1531 	virtual_op = virtual_active();
1532 #endif
1533 
1534 #ifdef FEAT_VISUAL
1535 	if (VIsual_active || redo_VIsual_busy)
1536 	{
1537 	    if (VIsual_mode == Ctrl_V)	/* block mode */
1538 	    {
1539 		colnr_T	    start, end;
1540 
1541 		oap->block_mode = TRUE;
1542 
1543 		getvvcol(curwin, &(oap->start),
1544 				      &oap->start_vcol, NULL, &oap->end_vcol);
1545 		if (!redo_VIsual_busy)
1546 		{
1547 		    getvvcol(curwin, &(oap->end), &start, NULL, &end);
1548 
1549 		    if (start < oap->start_vcol)
1550 			oap->start_vcol = start;
1551 		    if (end > oap->end_vcol)
1552 		    {
1553 			if (*p_sel == 'e' && start >= 1
1554 						&& start - 1 >= oap->end_vcol)
1555 			    oap->end_vcol = start - 1;
1556 			else
1557 			    oap->end_vcol = end;
1558 		    }
1559 		}
1560 
1561 		/* if '$' was used, get oap->end_vcol from longest line */
1562 		if (curwin->w_curswant == MAXCOL)
1563 		{
1564 		    curwin->w_cursor.col = MAXCOL;
1565 		    oap->end_vcol = 0;
1566 		    for (curwin->w_cursor.lnum = oap->start.lnum;
1567 			    curwin->w_cursor.lnum <= oap->end.lnum;
1568 						      ++curwin->w_cursor.lnum)
1569 		    {
1570 			getvvcol(curwin, &curwin->w_cursor, NULL, NULL, &end);
1571 			if (end > oap->end_vcol)
1572 			    oap->end_vcol = end;
1573 		    }
1574 		}
1575 		else if (redo_VIsual_busy)
1576 		    oap->end_vcol = oap->start_vcol + redo_VIsual_col - 1;
1577 		/*
1578 		 * Correct oap->end.col and oap->start.col to be the
1579 		 * upper-left and lower-right corner of the block area.
1580 		 *
1581 		 * (Actually, this does convert column positions into character
1582 		 * positions)
1583 		 */
1584 		curwin->w_cursor.lnum = oap->end.lnum;
1585 		coladvance(oap->end_vcol);
1586 		oap->end = curwin->w_cursor;
1587 
1588 		curwin->w_cursor = oap->start;
1589 		coladvance(oap->start_vcol);
1590 		oap->start = curwin->w_cursor;
1591 	    }
1592 
1593 	    if (!redo_VIsual_busy && !gui_yank)
1594 	    {
1595 		/*
1596 		 * Prepare to reselect and redo Visual: this is based on the
1597 		 * size of the Visual text
1598 		 */
1599 		resel_VIsual_mode = VIsual_mode;
1600 		if (curwin->w_curswant == MAXCOL)
1601 		    resel_VIsual_col = MAXCOL;
1602 		else if (VIsual_mode == Ctrl_V)
1603 		    resel_VIsual_col = oap->end_vcol - oap->start_vcol + 1;
1604 		else if (oap->line_count > 1)
1605 		    resel_VIsual_col = oap->end.col;
1606 		else
1607 		    resel_VIsual_col = oap->end.col - oap->start.col + 1;
1608 		resel_VIsual_line_count = oap->line_count;
1609 	    }
1610 
1611 	    /* can't redo yank (unless 'y' is in 'cpoptions') and ":" */
1612 	    if ((vim_strchr(p_cpo, CPO_YANK) != NULL || oap->op_type != OP_YANK)
1613 		    && oap->op_type != OP_COLON
1614 #ifdef FEAT_FOLDING
1615 		    && oap->op_type != OP_FOLD
1616 		    && oap->op_type != OP_FOLDOPEN
1617 		    && oap->op_type != OP_FOLDOPENREC
1618 		    && oap->op_type != OP_FOLDCLOSE
1619 		    && oap->op_type != OP_FOLDCLOSEREC
1620 		    && oap->op_type != OP_FOLDDEL
1621 		    && oap->op_type != OP_FOLDDELREC
1622 #endif
1623 		    && oap->motion_force == NUL
1624 		    )
1625 	    {
1626 		/* Prepare for redoing.  Only use the nchar field for "r",
1627 		 * otherwise it might be the second char of the operator. */
1628 		prep_redo(oap->regname, 0L, NUL, 'v',
1629 				get_op_char(oap->op_type),
1630 				get_extra_op_char(oap->op_type),
1631 				oap->op_type == OP_REPLACE ? cap->nchar : NUL);
1632 		if (!redo_VIsual_busy)
1633 		{
1634 		    redo_VIsual_mode = resel_VIsual_mode;
1635 		    redo_VIsual_col = resel_VIsual_col;
1636 		    redo_VIsual_line_count = resel_VIsual_line_count;
1637 		    redo_VIsual_count = cap->count0;
1638 		}
1639 	    }
1640 
1641 	    /*
1642 	     * oap->inclusive defaults to TRUE.
1643 	     * If oap->end is on a NUL (empty line) oap->inclusive becomes
1644 	     * FALSE.  This makes "d}P" and "v}dP" work the same.
1645 	     */
1646 	    if (oap->motion_force == NUL || oap->motion_type == MLINE)
1647 		oap->inclusive = TRUE;
1648 	    if (VIsual_mode == 'V')
1649 		oap->motion_type = MLINE;
1650 	    else
1651 	    {
1652 		oap->motion_type = MCHAR;
1653 		if (VIsual_mode != Ctrl_V && *ml_get_pos(&(oap->end)) == NUL
1654 # ifdef FEAT_VIRTUALEDIT
1655 			&& (include_line_break || !virtual_op)
1656 # endif
1657 			)
1658 		{
1659 		    oap->inclusive = FALSE;
1660 		    /* Try to include the newline, unless it's an operator
1661 		     * that works on lines only */
1662 		    if (*p_sel != 'o'
1663 			    && !op_on_lines(oap->op_type)
1664 			    && oap->end.lnum < curbuf->b_ml.ml_line_count)
1665 		    {
1666 			++oap->end.lnum;
1667 			oap->end.col = 0;
1668 # ifdef FEAT_VIRTUALEDIT
1669 			oap->end.coladd = 0;
1670 # endif
1671 			++oap->line_count;
1672 		    }
1673 		}
1674 	    }
1675 
1676 	    redo_VIsual_busy = FALSE;
1677 	    /*
1678 	     * Switch Visual off now, so screen updating does
1679 	     * not show inverted text when the screen is redrawn.
1680 	     * With OP_YANK and sometimes with OP_COLON and OP_FILTER there is
1681 	     * no screen redraw, so it is done here to remove the inverted
1682 	     * part.
1683 	     */
1684 	    if (!gui_yank)
1685 	    {
1686 		VIsual_active = FALSE;
1687 # ifdef FEAT_MOUSE
1688 		setmouse();
1689 		mouse_dragging = 0;
1690 # endif
1691 		if (p_smd)
1692 		    clear_cmdline = TRUE;   /* unshow visual mode later */
1693 #ifdef FEAT_CMDL_INFO
1694 		else
1695 		    clear_showcmd();
1696 #endif
1697 		if ((oap->op_type == OP_YANK
1698 			    || oap->op_type == OP_COLON
1699 			    || oap->op_type == OP_FILTER)
1700 			&& oap->motion_force == NUL)
1701 		    redraw_curbuf_later(INVERTED);
1702 	    }
1703 	}
1704 #endif
1705 
1706 #ifdef FEAT_MBYTE
1707 	/* Include the trailing byte of a multi-byte char. */
1708 	if (has_mbyte && oap->inclusive)
1709 	{
1710 	    int		l;
1711 
1712 	    l = (*mb_ptr2len_check)(ml_get_pos(&oap->end));
1713 	    if (l > 1)
1714 		oap->end.col += l - 1;
1715 	}
1716 #endif
1717 	curwin->w_set_curswant = TRUE;
1718 
1719 	/*
1720 	 * oap->empty is set when start and end are the same.  The inclusive
1721 	 * flag affects this too, unless yanking and the end is on a NUL.
1722 	 */
1723 	oap->empty = (oap->motion_type == MCHAR
1724 		    && (!oap->inclusive
1725 			|| (oap->op_type == OP_YANK
1726 			    && gchar_pos(&oap->end) == NUL))
1727 		    && equalpos(oap->start, oap->end)
1728 #ifdef FEAT_VIRTUALEDIT
1729 		    && !(virtual_op && oap->start.coladd != oap->end.coladd)
1730 #endif
1731 		    );
1732 	/*
1733 	 * For delete, change and yank, it's an error to operate on an
1734 	 * empty region, when 'E' included in 'cpoptions' (Vi compatible).
1735 	 */
1736 	empty_region_error = (oap->empty
1737 				&& vim_strchr(p_cpo, CPO_EMPTYREGION) != NULL);
1738 
1739 #ifdef FEAT_VISUAL
1740 	/* Force a redraw when operating on an empty Visual region, when
1741 	 * 'modifiable is off or creating a fold. */
1742 	if (oap->is_VIsual && (oap->empty || !curbuf->b_p_ma
1743 # ifdef FEAT_FOLDING
1744 		    || oap->op_type == OP_FOLD
1745 # endif
1746 		    ))
1747 	    redraw_curbuf_later(INVERTED);
1748 #endif
1749 
1750 	/*
1751 	 * If the end of an operator is in column one while oap->motion_type
1752 	 * is MCHAR and oap->inclusive is FALSE, we put op_end after the last
1753 	 * character in the previous line. If op_start is on or before the
1754 	 * first non-blank in the line, the operator becomes linewise
1755 	 * (strange, but that's the way vi does it).
1756 	 */
1757 	if (	   oap->motion_type == MCHAR
1758 		&& oap->inclusive == FALSE
1759 		&& !(cap->retval & CA_NO_ADJ_OP_END)
1760 		&& oap->end.col == 0
1761 #ifdef FEAT_VISUAL
1762 		&& (!oap->is_VIsual || *p_sel == 'o')
1763 #endif
1764 		&& oap->line_count > 1)
1765 	{
1766 	    oap->end_adjusted = TRUE;	    /* remember that we did this */
1767 	    --oap->line_count;
1768 	    --oap->end.lnum;
1769 	    if (inindent(0))
1770 		oap->motion_type = MLINE;
1771 	    else
1772 	    {
1773 		oap->end.col = (colnr_T)STRLEN(ml_get(oap->end.lnum));
1774 		if (oap->end.col)
1775 		{
1776 		    --oap->end.col;
1777 		    oap->inclusive = TRUE;
1778 		}
1779 	    }
1780 	}
1781 	else
1782 	    oap->end_adjusted = FALSE;
1783 
1784 	switch (oap->op_type)
1785 	{
1786 	case OP_LSHIFT:
1787 	case OP_RSHIFT:
1788 	    op_shift(oap, TRUE,
1789 #ifdef FEAT_VISUAL
1790 		    oap->is_VIsual ? (int)cap->count1 :
1791 #endif
1792 		    1);
1793 	    auto_format(FALSE, TRUE);
1794 	    break;
1795 
1796 	case OP_JOIN_NS:
1797 	case OP_JOIN:
1798 	    if (oap->line_count < 2)
1799 		oap->line_count = 2;
1800 	    if (curwin->w_cursor.lnum + oap->line_count - 1 >
1801 						   curbuf->b_ml.ml_line_count)
1802 		beep_flush();
1803 	    else
1804 	    {
1805 		do_do_join(oap->line_count, oap->op_type == OP_JOIN);
1806 		auto_format(FALSE, TRUE);
1807 	    }
1808 	    break;
1809 
1810 	case OP_DELETE:
1811 #ifdef FEAT_VISUAL
1812 	    VIsual_reselect = FALSE;	    /* don't reselect now */
1813 #endif
1814 	    if (empty_region_error)
1815 		vim_beep();
1816 	    else
1817 	    {
1818 		(void)op_delete(oap);
1819 		if (oap->motion_type == MLINE && has_format_option(FO_AUTO))
1820 		    u_save_cursor();	    /* cursor line wasn't saved yet */
1821 		auto_format(FALSE, TRUE);
1822 	    }
1823 	    break;
1824 
1825 	case OP_YANK:
1826 	    if (empty_region_error)
1827 	    {
1828 		if (!gui_yank)
1829 		    vim_beep();
1830 	    }
1831 	    else
1832 		(void)op_yank(oap, FALSE, !gui_yank);
1833 	    check_cursor_col();
1834 	    break;
1835 
1836 	case OP_CHANGE:
1837 #ifdef FEAT_VISUAL
1838 	    VIsual_reselect = FALSE;	    /* don't reselect now */
1839 #endif
1840 	    if (empty_region_error)
1841 		vim_beep();
1842 	    else
1843 	    {
1844 		/* This is a new edit command, not a restart.  Need to
1845 		 * remember it to make 'insertmode' work with mappings for
1846 		 * Visual mode.  But do this only once and not when typed and
1847 		 * 'insertmode' isn't set. */
1848 		if (p_im || !KeyTyped)
1849 		    restart_edit_save = restart_edit;
1850 		else
1851 		    restart_edit_save = 0;
1852 		restart_edit = 0;
1853 		/* Reset finish_op now, don't want it set inside edit(). */
1854 		finish_op = FALSE;
1855 		if (op_change(oap))	/* will call edit() */
1856 		    cap->retval |= CA_COMMAND_BUSY;
1857 		if (restart_edit == 0)
1858 		    restart_edit = restart_edit_save;
1859 	    }
1860 	    break;
1861 
1862 	case OP_FILTER:
1863 	    if (vim_strchr(p_cpo, CPO_FILTER) != NULL)
1864 		AppendToRedobuff((char_u *)"!\r");  /* use any last used !cmd */
1865 	    else
1866 		bangredo = TRUE;    /* do_bang() will put cmd in redo buffer */
1867 
1868 	case OP_INDENT:
1869 	case OP_COLON:
1870 
1871 #if defined(FEAT_LISP) || defined(FEAT_CINDENT)
1872 	    /*
1873 	     * If 'equalprg' is empty, do the indenting internally.
1874 	     */
1875 	    if (oap->op_type == OP_INDENT && *get_equalprg() == NUL)
1876 	    {
1877 # ifdef FEAT_LISP
1878 		if (curbuf->b_p_lisp)
1879 		{
1880 		    op_reindent(oap, get_lisp_indent);
1881 		    break;
1882 		}
1883 # endif
1884 # ifdef FEAT_CINDENT
1885 		op_reindent(oap,
1886 #  ifdef FEAT_EVAL
1887 			*curbuf->b_p_inde != NUL ? get_expr_indent :
1888 #  endif
1889 			    get_c_indent);
1890 		break;
1891 # endif
1892 	    }
1893 #endif
1894 
1895 	    op_colon(oap);
1896 	    break;
1897 
1898 	case OP_TILDE:
1899 	case OP_UPPER:
1900 	case OP_LOWER:
1901 	case OP_ROT13:
1902 	    if (empty_region_error)
1903 		vim_beep();
1904 	    else
1905 		op_tilde(oap);
1906 	    check_cursor_col();
1907 	    break;
1908 
1909 	case OP_FORMAT:
1910 	    if (*p_fp != NUL)
1911 		op_colon(oap);		/* use external command */
1912 	    else
1913 		op_format(oap, FALSE);	/* use internal function */
1914 	    break;
1915 
1916 	case OP_FORMAT2:
1917 	    op_format(oap, TRUE);	/* use internal function */
1918 	    break;
1919 
1920 	case OP_INSERT:
1921 	case OP_APPEND:
1922 #ifdef FEAT_VISUAL
1923 	    VIsual_reselect = FALSE;	/* don't reselect now */
1924 #endif
1925 #ifdef FEAT_VISUALEXTRA
1926 	    if (empty_region_error)
1927 		vim_beep();
1928 	    else
1929 	    {
1930 		/* This is a new edit command, not a restart.  Need to
1931 		 * remember it to make 'insertmode' work with mappings for
1932 		 * Visual mode.  But do this only once. */
1933 		restart_edit_save = restart_edit;
1934 		restart_edit = 0;
1935 
1936 		op_insert(oap, cap->count1);
1937 
1938 		/* TODO: when inserting in several lines, should format all
1939 		 * the lines. */
1940 		auto_format(FALSE, TRUE);
1941 
1942 		if (restart_edit == 0)
1943 		    restart_edit = restart_edit_save;
1944 	    }
1945 #else
1946 	    vim_beep();
1947 #endif
1948 	    break;
1949 
1950 	case OP_REPLACE:
1951 #ifdef FEAT_VISUAL
1952 	    VIsual_reselect = FALSE;	/* don't reselect now */
1953 #endif
1954 #ifdef FEAT_VISUALEXTRA
1955 	    if (empty_region_error)
1956 #endif
1957 		vim_beep();
1958 #ifdef FEAT_VISUALEXTRA
1959 	    else
1960 		op_replace(oap, cap->nchar);
1961 #endif
1962 	    break;
1963 
1964 #ifdef FEAT_FOLDING
1965 	case OP_FOLD:
1966 	    VIsual_reselect = FALSE;	/* don't reselect now */
1967 	    foldCreate(oap->start.lnum, oap->end.lnum);
1968 	    break;
1969 
1970 	case OP_FOLDOPEN:
1971 	case OP_FOLDOPENREC:
1972 	case OP_FOLDCLOSE:
1973 	case OP_FOLDCLOSEREC:
1974 	    VIsual_reselect = FALSE;	/* don't reselect now */
1975 	    opFoldRange(oap->start.lnum, oap->end.lnum,
1976 		    oap->op_type == OP_FOLDOPEN
1977 					    || oap->op_type == OP_FOLDOPENREC,
1978 		    oap->op_type == OP_FOLDOPENREC
1979 					  || oap->op_type == OP_FOLDCLOSEREC,
1980 					  oap->is_VIsual);
1981 	    break;
1982 
1983 	case OP_FOLDDEL:
1984 	case OP_FOLDDELREC:
1985 	    VIsual_reselect = FALSE;	/* don't reselect now */
1986 	    deleteFold(oap->start.lnum, oap->end.lnum,
1987 			       oap->op_type == OP_FOLDDELREC, oap->is_VIsual);
1988 	    break;
1989 #endif
1990 	default:
1991 	    clearopbeep(oap);
1992 	}
1993 #ifdef FEAT_VIRTUALEDIT
1994 	virtual_op = MAYBE;
1995 #endif
1996 	if (!gui_yank)
1997 	{
1998 	    /*
1999 	     * if 'sol' not set, go back to old column for some commands
2000 	     */
2001 	    if (!p_sol && oap->motion_type == MLINE && !oap->end_adjusted
2002 		    && (oap->op_type == OP_LSHIFT || oap->op_type == OP_RSHIFT
2003 						|| oap->op_type == OP_DELETE))
2004 		coladvance(curwin->w_curswant = old_col);
2005 	}
2006 	else
2007 	{
2008 	    curwin->w_cursor = old_cursor;
2009 	}
2010 #ifdef FEAT_VISUAL
2011 	oap->block_mode = FALSE;
2012 #endif
2013 	clearop(oap);
2014     }
2015 }
2016 
2017 /*
2018  * Handle indent and format operators and visual mode ":".
2019  */
2020     static void
2021 op_colon(oap)
2022     oparg_T	*oap;
2023 {
2024     stuffcharReadbuff(':');
2025 #ifdef FEAT_VISUAL
2026     if (oap->is_VIsual)
2027 	stuffReadbuff((char_u *)"'<,'>");
2028     else
2029 #endif
2030     {
2031 	/*
2032 	 * Make the range look nice, so it can be repeated.
2033 	 */
2034 	if (oap->start.lnum == curwin->w_cursor.lnum)
2035 	    stuffcharReadbuff('.');
2036 	else
2037 	    stuffnumReadbuff((long)oap->start.lnum);
2038 	if (oap->end.lnum != oap->start.lnum)
2039 	{
2040 	    stuffcharReadbuff(',');
2041 	    if (oap->end.lnum == curwin->w_cursor.lnum)
2042 		stuffcharReadbuff('.');
2043 	    else if (oap->end.lnum == curbuf->b_ml.ml_line_count)
2044 		stuffcharReadbuff('$');
2045 	    else if (oap->start.lnum == curwin->w_cursor.lnum)
2046 	    {
2047 		stuffReadbuff((char_u *)".+");
2048 		stuffnumReadbuff((long)oap->line_count - 1);
2049 	    }
2050 	    else
2051 		stuffnumReadbuff((long)oap->end.lnum);
2052 	}
2053     }
2054     if (oap->op_type != OP_COLON)
2055 	stuffReadbuff((char_u *)"!");
2056     if (oap->op_type == OP_INDENT)
2057     {
2058 #ifndef FEAT_CINDENT
2059 	if (*get_equalprg() == NUL)
2060 	    stuffReadbuff((char_u *)"indent");
2061 	else
2062 #endif
2063 	    stuffReadbuff(get_equalprg());
2064 	stuffReadbuff((char_u *)"\n");
2065     }
2066     else if (oap->op_type == OP_FORMAT)
2067     {
2068 	if (*p_fp == NUL)
2069 	    stuffReadbuff((char_u *)"fmt");
2070 	else
2071 	    stuffReadbuff(p_fp);
2072 	stuffReadbuff((char_u *)"\n");
2073     }
2074 
2075     /*
2076      * do_cmdline() does the rest
2077      */
2078 }
2079 
2080 #if defined(FEAT_MOUSE) || defined(PROTO)
2081 /*
2082  * Do the appropriate action for the current mouse click in the current mode.
2083  * Not used for Command-line mode.
2084  *
2085  * Normal Mode:
2086  * event	 modi-	position      visual	   change   action
2087  *		 fier	cursor			   window
2088  * left press	  -	yes	    end		    yes
2089  * left press	  C	yes	    end		    yes	    "^]" (2)
2090  * left press	  S	yes	    end		    yes	    "*" (2)
2091  * left drag	  -	yes	start if moved	    no
2092  * left relse	  -	yes	start if moved	    no
2093  * middle press	  -	yes	 if not active	    no	    put register
2094  * middle press	  -	yes	 if active	    no	    yank and put
2095  * right press	  -	yes	start or extend	    yes
2096  * right press	  S	yes	no change	    yes	    "#" (2)
2097  * right drag	  -	yes	extend		    no
2098  * right relse	  -	yes	extend		    no
2099  *
2100  * Insert or Replace Mode:
2101  * event	 modi-	position      visual	   change   action
2102  *		 fier	cursor			   window
2103  * left press	  -	yes	(cannot be active)  yes
2104  * left press	  C	yes	(cannot be active)  yes	    "CTRL-O^]" (2)
2105  * left press	  S	yes	(cannot be active)  yes	    "CTRL-O*" (2)
2106  * left drag	  -	yes	start or extend (1) no	    CTRL-O (1)
2107  * left relse	  -	yes	start or extend (1) no	    CTRL-O (1)
2108  * middle press	  -	no	(cannot be active)  no	    put register
2109  * right press	  -	yes	start or extend	    yes	    CTRL-O
2110  * right press	  S	yes	(cannot be active)  yes	    "CTRL-O#" (2)
2111  *
2112  * (1) only if mouse pointer moved since press
2113  * (2) only if click is in same buffer
2114  *
2115  * Return TRUE if start_arrow() should be called for edit mode.
2116  */
2117     int
2118 do_mouse(oap, c, dir, count, fixindent)
2119     oparg_T	*oap;		/* operator argument, can be NULL */
2120     int		c;		/* K_LEFTMOUSE, etc */
2121     int		dir;		/* Direction to 'put' if necessary */
2122     long	count;
2123     int		fixindent;	/* PUT_FIXINDENT if fixing indent necessary */
2124 {
2125     static int	do_always = FALSE;	/* ignore 'mouse' setting next time */
2126     static int	got_click = FALSE;	/* got a click some time back */
2127 
2128     int		which_button;	/* MOUSE_LEFT, _MIDDLE or _RIGHT */
2129     int		is_click;	/* If FALSE it's a drag or release event */
2130     int		is_drag;	/* If TRUE it's a drag event */
2131     int		jump_flags = 0;	/* flags for jump_to_mouse() */
2132     pos_T	start_visual;
2133     int		moved;		/* Has cursor moved? */
2134     int		in_status_line;	/* mouse in status line */
2135 #ifdef FEAT_VERTSPLIT
2136     int		in_sep_line;	/* mouse in vertical separator line */
2137 #endif
2138     int		c1, c2;
2139 #if defined(FEAT_FOLDING)
2140     pos_T	save_cursor;
2141 #endif
2142     win_T	*old_curwin = curwin;
2143 #ifdef FEAT_VISUAL
2144     static pos_T orig_cursor;
2145     colnr_T	leftcol, rightcol;
2146     pos_T	end_visual;
2147     int		diff;
2148     int		old_active = VIsual_active;
2149     int		old_mode = VIsual_mode;
2150 #endif
2151     int		regname;
2152 
2153 #if defined(FEAT_FOLDING)
2154     save_cursor = curwin->w_cursor;
2155 #endif
2156 
2157     /*
2158      * When GUI is active, always recognize mouse events, otherwise:
2159      * - Ignore mouse event in normal mode if 'mouse' doesn't include 'n'.
2160      * - Ignore mouse event in visual mode if 'mouse' doesn't include 'v'.
2161      * - For command line and insert mode 'mouse' is checked before calling
2162      *	 do_mouse().
2163      */
2164     if (do_always)
2165 	do_always = FALSE;
2166     else
2167 #ifdef FEAT_GUI
2168 	if (!gui.in_use)
2169 #endif
2170 	{
2171 #ifdef FEAT_VISUAL
2172 	    if (VIsual_active)
2173 	    {
2174 		if (!mouse_has(MOUSE_VISUAL))
2175 		    return FALSE;
2176 	    }
2177 	    else
2178 #endif
2179 		if (State == NORMAL && !mouse_has(MOUSE_NORMAL))
2180 		return FALSE;
2181 	}
2182 
2183     which_button = get_mouse_button(KEY2TERMCAP1(c), &is_click, &is_drag);
2184 
2185 #ifdef FEAT_MOUSESHAPE
2186     /* May have stopped dragging the status or separator line.  The pointer is
2187      * most likely still on the status or separator line. */
2188     if (!is_drag && drag_status_line)
2189     {
2190 	drag_status_line = FALSE;
2191 	update_mouseshape(SHAPE_IDX_STATUS);
2192     }
2193 # ifdef FEAT_VERTSPLIT
2194     if (!is_drag && drag_sep_line)
2195     {
2196 	drag_sep_line = FALSE;
2197 	update_mouseshape(SHAPE_IDX_VSEP);
2198     }
2199 # endif
2200 #endif
2201 
2202     /*
2203      * Ignore drag and release events if we didn't get a click.
2204      */
2205     if (is_click)
2206 	got_click = TRUE;
2207     else
2208     {
2209 	if (!got_click)			/* didn't get click, ignore */
2210 	    return FALSE;
2211 	if (!is_drag)			/* release, reset got_click */
2212 	    got_click = FALSE;
2213     }
2214 
2215     /*
2216      * ALT is currently ignored
2217      */
2218     if ((mod_mask & MOD_MASK_ALT))
2219 	return FALSE;
2220 
2221     /*
2222      * CTRL right mouse button does CTRL-T
2223      */
2224     if (is_click && (mod_mask & MOD_MASK_CTRL) && which_button == MOUSE_RIGHT)
2225     {
2226 	if (State & INSERT)
2227 	    stuffcharReadbuff(Ctrl_O);
2228 	if (count > 1)
2229 	    stuffnumReadbuff(count);
2230 	stuffcharReadbuff(Ctrl_T);
2231 	got_click = FALSE;		/* ignore drag&release now */
2232 	return FALSE;
2233     }
2234 
2235     /*
2236      * CTRL only works with left mouse button
2237      */
2238     if ((mod_mask & MOD_MASK_CTRL) && which_button != MOUSE_LEFT)
2239 	return FALSE;
2240 
2241     /*
2242      * When a modifier is down, ignore drag and release events, as well as
2243      * multiple clicks and the middle mouse button.
2244      * Accept shift-leftmouse drags when 'mousemodel' is "popup.*".
2245      */
2246     if ((mod_mask & (MOD_MASK_SHIFT | MOD_MASK_CTRL | MOD_MASK_ALT))
2247 	    && (!is_click
2248 		|| (mod_mask & MOD_MASK_MULTI_CLICK)
2249 		|| which_button == MOUSE_MIDDLE)
2250 	    && !((mod_mask & MOD_MASK_SHIFT)
2251 		&& mouse_model_popup()
2252 		&& which_button == MOUSE_LEFT)
2253 	    )
2254 	return FALSE;
2255 
2256     /*
2257      * If the button press was used as the movement command for an operator
2258      * (eg "d<MOUSE>"), or it is the middle button that is held down, ignore
2259      * drag/release events.
2260      */
2261     if (!is_click && which_button == MOUSE_MIDDLE)
2262 	return FALSE;
2263 
2264     if (oap != NULL)
2265 	regname = oap->regname;
2266     else
2267 	regname = 0;
2268 
2269     /*
2270      * Middle mouse button does a 'put' of the selected text
2271      */
2272     if (which_button == MOUSE_MIDDLE)
2273     {
2274 	if (State == NORMAL)
2275 	{
2276 	    /*
2277 	     * If an operator was pending, we don't know what the user wanted
2278 	     * to do. Go back to normal mode: Clear the operator and beep().
2279 	     */
2280 	    if (oap != NULL && oap->op_type != OP_NOP)
2281 	    {
2282 		clearopbeep(oap);
2283 		return FALSE;
2284 	    }
2285 
2286 #ifdef FEAT_VISUAL
2287 	    /*
2288 	     * If visual was active, yank the highlighted text and put it
2289 	     * before the mouse pointer position.
2290 	     */
2291 	    if (VIsual_active)
2292 	    {
2293 		stuffcharReadbuff('y');
2294 		stuffcharReadbuff(K_MIDDLEMOUSE);
2295 		do_always = TRUE;	/* ignore 'mouse' setting next time */
2296 		return FALSE;
2297 	    }
2298 #endif
2299 	    /*
2300 	     * The rest is below jump_to_mouse()
2301 	     */
2302 	}
2303 
2304 	else if ((State & INSERT) == 0)
2305 	    return FALSE;
2306 
2307 	/*
2308 	 * Middle click in insert mode doesn't move the mouse, just insert the
2309 	 * contents of a register.  '.' register is special, can't insert that
2310 	 * with do_put().
2311 	 * Also paste at the cursor if the current mode isn't in 'mouse' (only
2312 	 * happens for the GUI).
2313 	 */
2314 	if ((State & INSERT) || !mouse_has(MOUSE_NORMAL))
2315 	{
2316 	    if (regname == '.')
2317 		insert_reg(regname, TRUE);
2318 	    else
2319 	    {
2320 #ifdef FEAT_CLIPBOARD
2321 		if (clip_star.available && regname == 0)
2322 		    regname = '*';
2323 #endif
2324 		if ((State & REPLACE_FLAG) && !yank_register_mline(regname))
2325 		    insert_reg(regname, TRUE);
2326 		else
2327 		{
2328 		    do_put(regname, BACKWARD, 1L, fixindent | PUT_CURSEND);
2329 
2330 		    /* Repeat it with CTRL-R CTRL-O r or CTRL-R CTRL-P r */
2331 		    AppendCharToRedobuff(Ctrl_R);
2332 		    AppendCharToRedobuff(fixindent ? Ctrl_P : Ctrl_O);
2333 		    AppendCharToRedobuff(regname == 0 ? '"' : regname);
2334 		}
2335 	    }
2336 	    return FALSE;
2337 	}
2338     }
2339 
2340     /* When dragging or button-up stay in the same window. */
2341     if (!is_click)
2342 	jump_flags |= MOUSE_FOCUS | MOUSE_DID_MOVE;
2343 
2344     start_visual.lnum = 0;
2345 
2346     /*
2347      * When 'mousemodel' is "popup" or "popup_setpos", translate mouse events:
2348      * right button up   -> pop-up menu
2349      * shift-left button -> right button
2350      */
2351     if (mouse_model_popup())
2352     {
2353 	if (which_button == MOUSE_RIGHT
2354 			    && !(mod_mask & (MOD_MASK_SHIFT | MOD_MASK_CTRL)))
2355 	{
2356 	    /*
2357 	     * NOTE: Ignore right button down and drag mouse events.
2358 	     * Windows only shows the popup menu on the button up event.
2359 	     */
2360 #if defined(FEAT_GUI_MOTIF) || defined(FEAT_GUI_GTK) || defined(FEAT_GUI_PHOTON) || defined(FEAT_GUI_KDE)
2361 	    if (!is_click)
2362 		return FALSE;
2363 #endif
2364 #if defined(FEAT_GUI_ATHENA) || defined(FEAT_GUI_MSWIN)
2365 	    if (is_click || is_drag)
2366 		return FALSE;
2367 #endif
2368 #if defined(FEAT_GUI_MOTIF) || defined(FEAT_GUI_GTK) || defined(FEAT_GUI_KDE) \
2369 	    || defined(FEAT_GUI_ATHENA) || defined(FEAT_GUI_MSWIN) \
2370 	    || defined(FEAT_GUI_MAC) || defined(FEAT_GUI_PHOTON)
2371 	    if (gui.in_use)
2372 	    {
2373 		jump_flags = 0;
2374 		if (STRCMP(p_mousem, "popup_setpos") == 0)
2375 		{
2376 		    /* First set the cursor position before showing the popup
2377 		     * menu. */
2378 #ifdef FEAT_VISUAL
2379 		    if (VIsual_active)
2380 		    {
2381 			pos_T    m_pos;
2382 
2383 			/*
2384 			 * set MOUSE_MAY_STOP_VIS if we are outside the
2385 			 * selection or the current window (might have false
2386 			 * negative here)
2387 			 */
2388 			if (mouse_row < W_WINROW(curwin)
2389 			     || mouse_row
2390 				      > (W_WINROW(curwin) + curwin->w_height))
2391 			    jump_flags = MOUSE_MAY_STOP_VIS;
2392 			else if (get_fpos_of_mouse(&m_pos) != IN_BUFFER)
2393 			    jump_flags = MOUSE_MAY_STOP_VIS;
2394 			else
2395 			{
2396 			    if ((lt(curwin->w_cursor, VIsual)
2397 					&& (lt(m_pos, curwin->w_cursor)
2398 					    || lt(VIsual, m_pos)))
2399 				    || (lt(VIsual, curwin->w_cursor)
2400 					&& (lt(m_pos, VIsual)
2401 					    || lt(curwin->w_cursor, m_pos))))
2402 			    {
2403 				jump_flags = MOUSE_MAY_STOP_VIS;
2404 			    }
2405 			    else if (VIsual_mode == Ctrl_V)
2406 			    {
2407 				getvcols(curwin, &curwin->w_cursor, &VIsual,
2408 							 &leftcol, &rightcol);
2409 				getvcol(curwin, &m_pos, NULL, &m_pos.col, NULL);
2410 				if (m_pos.col < leftcol || m_pos.col > rightcol)
2411 				    jump_flags = MOUSE_MAY_STOP_VIS;
2412 			    }
2413 			}
2414 		    }
2415 		    else
2416 			jump_flags = MOUSE_MAY_STOP_VIS;
2417 #endif
2418 		}
2419 		if (jump_flags)
2420 		{
2421 		    jump_flags = jump_to_mouse(jump_flags, NULL, which_button);
2422 		    update_curbuf(
2423 #ifdef FEAT_VISUAL
2424 			    VIsual_active ? INVERTED :
2425 #endif
2426 			    VALID);
2427 		    setcursor();
2428 		    out_flush();    /* Update before showing popup menu */
2429 		}
2430 # ifdef FEAT_MENU
2431 		gui_show_popupmenu();
2432 # endif
2433 		return (jump_flags & CURSOR_MOVED) != 0;
2434 	    }
2435 	    else
2436 		return FALSE;
2437 #else
2438 	    return FALSE;
2439 #endif
2440 	}
2441 	if (which_button == MOUSE_LEFT && (mod_mask & MOD_MASK_SHIFT))
2442 	{
2443 	    which_button = MOUSE_RIGHT;
2444 	    mod_mask &= ~MOD_MASK_SHIFT;
2445 	}
2446     }
2447 
2448 #ifdef FEAT_VISUAL
2449     if ((State & (NORMAL | INSERT))
2450 			    && !(mod_mask & (MOD_MASK_SHIFT | MOD_MASK_CTRL)))
2451     {
2452 	if (which_button == MOUSE_LEFT)
2453 	{
2454 	    if (is_click)
2455 	    {
2456 		/* stop Visual mode for a left click in a window, but not when
2457 		 * on a status line */
2458 		if (VIsual_active)
2459 		    jump_flags |= MOUSE_MAY_STOP_VIS;
2460 	    }
2461 	    else if (mouse_has(MOUSE_VISUAL))
2462 		jump_flags |= MOUSE_MAY_VIS;
2463 	}
2464 	else if (which_button == MOUSE_RIGHT)
2465 	{
2466 	    if (is_click && VIsual_active)
2467 	    {
2468 		/*
2469 		 * Remember the start and end of visual before moving the
2470 		 * cursor.
2471 		 */
2472 		if (lt(curwin->w_cursor, VIsual))
2473 		{
2474 		    start_visual = curwin->w_cursor;
2475 		    end_visual = VIsual;
2476 		}
2477 		else
2478 		{
2479 		    start_visual = VIsual;
2480 		    end_visual = curwin->w_cursor;
2481 		}
2482 	    }
2483 	    jump_flags |= MOUSE_FOCUS;
2484 	    if (mouse_has(MOUSE_VISUAL))
2485 		jump_flags |= MOUSE_MAY_VIS;
2486 	}
2487     }
2488 #endif
2489 
2490     /*
2491      * If an operator is pending, ignore all drags and releases until the
2492      * next mouse click.
2493      */
2494     if (!is_drag && oap != NULL && oap->op_type != OP_NOP)
2495     {
2496 	got_click = FALSE;
2497 	oap->motion_type = MCHAR;
2498     }
2499 
2500     /* When releasing the button let jump_to_mouse() know. */
2501     if (!is_click && !is_drag)
2502 	jump_flags |= MOUSE_RELEASED;
2503 
2504     /*
2505      * JUMP!
2506      */
2507     jump_flags = jump_to_mouse(jump_flags,
2508 			oap == NULL ? NULL : &(oap->inclusive), which_button);
2509     moved = (jump_flags & CURSOR_MOVED);
2510     in_status_line = (jump_flags & IN_STATUS_LINE);
2511 #ifdef FEAT_VERTSPLIT
2512     in_sep_line = (jump_flags & IN_SEP_LINE);
2513 #endif
2514 
2515 #ifdef FEAT_NETBEANS_INTG
2516     if (usingNetbeans && isNetbeansBuffer(curbuf)
2517 			    && !(jump_flags & (IN_STATUS_LINE | IN_SEP_LINE)))
2518     {
2519 	int key = KEY2TERMCAP1(c);
2520 
2521 	if (key == (int)KE_LEFTRELEASE || key == (int)KE_MIDDLERELEASE
2522 					       || key == (int)KE_RIGHTRELEASE)
2523 	    netbeans_button_release(which_button);
2524     }
2525 #endif
2526 
2527     /* When jumping to another window, clear a pending operator.  That's a bit
2528      * friendlier than beeping and not jumping to that window. */
2529     if (curwin != old_curwin && oap != NULL && oap->op_type != OP_NOP)
2530 	clearop(oap);
2531 
2532 #ifdef FEAT_FOLDING
2533     if (mod_mask == 0
2534 	    && !is_drag
2535 	    && (jump_flags & (MOUSE_FOLD_CLOSE | MOUSE_FOLD_OPEN))
2536 	    && which_button == MOUSE_LEFT)
2537     {
2538 	/* open or close a fold at this line */
2539 	if (jump_flags & MOUSE_FOLD_OPEN)
2540 	    openFold(curwin->w_cursor.lnum, 1L);
2541 	else
2542 	    closeFold(curwin->w_cursor.lnum, 1L);
2543 	/* don't move the cursor if still in the same window */
2544 	if (curwin == old_curwin)
2545 	    curwin->w_cursor = save_cursor;
2546     }
2547 #endif
2548 
2549 #if defined(FEAT_CLIPBOARD) && defined(FEAT_CMDWIN)
2550     if ((jump_flags & IN_OTHER_WIN) && !VIsual_active && clip_star.available)
2551     {
2552 	clip_modeless(which_button, is_click, is_drag);
2553 	return FALSE;
2554     }
2555 #endif
2556 
2557 #ifdef FEAT_VISUAL
2558     /* Set global flag that we are extending the Visual area with mouse
2559      * dragging; temporarily mimimize 'scrolloff'. */
2560     if (VIsual_active && is_drag && p_so)
2561     {
2562 	/* In the very first line, allow scrolling one line */
2563 	if (mouse_row == 0)
2564 	    mouse_dragging = 2;
2565 	else
2566 	    mouse_dragging = 1;
2567     }
2568 
2569     /* When dragging the mouse above the window, scroll down. */
2570     if (is_drag && mouse_row < 0 && !in_status_line)
2571     {
2572 	scroll_redraw(FALSE, 1L);
2573 	mouse_row = 0;
2574     }
2575 
2576     if (start_visual.lnum)		/* right click in visual mode */
2577     {
2578 	/*
2579 	 * In Visual-block mode, divide the area in four, pick up the corner
2580 	 * that is in the quarter that the cursor is in.
2581 	 */
2582 	if (VIsual_mode == Ctrl_V)
2583 	{
2584 	    getvcols(curwin, &start_visual, &end_visual, &leftcol, &rightcol);
2585 	    if (curwin->w_curswant > (leftcol + rightcol) / 2)
2586 		end_visual.col = leftcol;
2587 	    else
2588 		end_visual.col = rightcol;
2589 	    if (curwin->w_cursor.lnum <
2590 				    (start_visual.lnum + end_visual.lnum) / 2)
2591 		end_visual.lnum = end_visual.lnum;
2592 	    else
2593 		end_visual.lnum = start_visual.lnum;
2594 
2595 	    /* move VIsual to the right column */
2596 	    start_visual = curwin->w_cursor;	    /* save the cursor pos */
2597 	    curwin->w_cursor = end_visual;
2598 	    coladvance(end_visual.col);
2599 	    VIsual = curwin->w_cursor;
2600 	    curwin->w_cursor = start_visual;	    /* restore the cursor */
2601 	}
2602 	else
2603 	{
2604 	    /*
2605 	     * If the click is before the start of visual, change the start.
2606 	     * If the click is after the end of visual, change the end.  If
2607 	     * the click is inside the visual, change the closest side.
2608 	     */
2609 	    if (lt(curwin->w_cursor, start_visual))
2610 		VIsual = end_visual;
2611 	    else if (lt(end_visual, curwin->w_cursor))
2612 		VIsual = start_visual;
2613 	    else
2614 	    {
2615 		/* In the same line, compare column number */
2616 		if (end_visual.lnum == start_visual.lnum)
2617 		{
2618 		    if (curwin->w_cursor.col - start_visual.col >
2619 				    end_visual.col - curwin->w_cursor.col)
2620 			VIsual = start_visual;
2621 		    else
2622 			VIsual = end_visual;
2623 		}
2624 
2625 		/* In different lines, compare line number */
2626 		else
2627 		{
2628 		    diff = (curwin->w_cursor.lnum - start_visual.lnum) -
2629 				(end_visual.lnum - curwin->w_cursor.lnum);
2630 
2631 		    if (diff > 0)		/* closest to end */
2632 			VIsual = start_visual;
2633 		    else if (diff < 0)	/* closest to start */
2634 			VIsual = end_visual;
2635 		    else			/* in the middle line */
2636 		    {
2637 			if (curwin->w_cursor.col <
2638 					(start_visual.col + end_visual.col) / 2)
2639 			    VIsual = end_visual;
2640 			else
2641 			    VIsual = start_visual;
2642 		    }
2643 		}
2644 	    }
2645 	}
2646     }
2647     /*
2648      * If Visual mode started in insert mode, execute "CTRL-O"
2649      */
2650     else if ((State & INSERT) && VIsual_active)
2651 	stuffcharReadbuff(Ctrl_O);
2652 #endif
2653 
2654     /*
2655      * Middle mouse click: Put text before cursor.
2656      */
2657     if (which_button == MOUSE_MIDDLE)
2658     {
2659 #ifdef FEAT_CLIPBOARD
2660 	if (clip_star.available && regname == 0)
2661 	    regname = '*';
2662 #endif
2663 	if (yank_register_mline(regname))
2664 	{
2665 	    if (mouse_past_bottom)
2666 		dir = FORWARD;
2667 	}
2668 	else if (mouse_past_eol)
2669 	    dir = FORWARD;
2670 
2671 	if (fixindent)
2672 	{
2673 	    c1 = (dir == BACKWARD) ? '[' : ']';
2674 	    c2 = 'p';
2675 	}
2676 	else
2677 	{
2678 	    c1 = (dir == FORWARD) ? 'p' : 'P';
2679 	    c2 = NUL;
2680 	}
2681 	prep_redo(regname, count, NUL, c1, NUL, c2, NUL);
2682 
2683 	/*
2684 	 * Remember where the paste started, so in edit() Insstart can be set
2685 	 * to this position
2686 	 */
2687 	if (restart_edit != 0)
2688 	    where_paste_started = curwin->w_cursor;
2689 	do_put(regname, dir, count, fixindent | PUT_CURSEND);
2690     }
2691 
2692 #if defined(FEAT_WINDOWS) && defined(FEAT_QUICKFIX)
2693     /*
2694      * Ctrl-Mouse click or double click in a quickfix window jumps to the
2695      * error under the mouse pointer.
2696      */
2697     else if (((mod_mask & MOD_MASK_CTRL)
2698 		|| (mod_mask & MOD_MASK_MULTI_CLICK) == MOD_MASK_2CLICK)
2699 	    && bt_quickfix(curbuf))
2700     {
2701 	if (State & INSERT)
2702 	    stuffcharReadbuff(Ctrl_O);
2703 	stuffReadbuff((char_u *)":.cc\n");
2704 	got_click = FALSE;		/* ignore drag&release now */
2705     }
2706 #endif
2707 
2708     /*
2709      * Ctrl-Mouse click (or double click in a help window) jumps to the tag
2710      * under the mouse pointer.
2711      */
2712     else if ((mod_mask & MOD_MASK_CTRL) || (curbuf->b_help
2713 		     && (mod_mask & MOD_MASK_MULTI_CLICK) == MOD_MASK_2CLICK))
2714     {
2715 	if (State & INSERT)
2716 	    stuffcharReadbuff(Ctrl_O);
2717 	stuffcharReadbuff(Ctrl_RSB);
2718 	got_click = FALSE;		/* ignore drag&release now */
2719     }
2720 
2721     /*
2722      * Shift-Mouse click searches for the next occurrence of the word under
2723      * the mouse pointer
2724      */
2725     else if ((mod_mask & MOD_MASK_SHIFT))
2726     {
2727 	if (State & INSERT
2728 #ifdef FEAT_VISUAL
2729 		|| (VIsual_active && VIsual_select)
2730 #endif
2731 		)
2732 	    stuffcharReadbuff(Ctrl_O);
2733 	if (which_button == MOUSE_LEFT)
2734 	    stuffcharReadbuff('*');
2735 	else	/* MOUSE_RIGHT */
2736 	    stuffcharReadbuff('#');
2737     }
2738 
2739     /* Handle double clicks, unless on status line */
2740     else if (in_status_line)
2741     {
2742 #ifdef FEAT_MOUSESHAPE
2743 	if ((is_drag || is_click) && !drag_status_line)
2744 	{
2745 	    drag_status_line = TRUE;
2746 	    update_mouseshape(-1);
2747 	}
2748 #endif
2749     }
2750 #ifdef FEAT_VERTSPLIT
2751     else if (in_sep_line)
2752     {
2753 # ifdef FEAT_MOUSESHAPE
2754 	if ((is_drag || is_click) && !drag_sep_line)
2755 	{
2756 	    drag_sep_line = TRUE;
2757 	    update_mouseshape(-1);
2758 	}
2759 # endif
2760     }
2761 #endif
2762 #ifdef FEAT_VISUAL
2763     else if ((mod_mask & MOD_MASK_MULTI_CLICK) && (State & (NORMAL | INSERT))
2764 	     && mouse_has(MOUSE_VISUAL))
2765     {
2766 	if (is_click || !VIsual_active)
2767 	{
2768 	    if (VIsual_active)
2769 		orig_cursor = VIsual;
2770 	    else
2771 	    {
2772 		check_visual_highlight();
2773 		VIsual = curwin->w_cursor;
2774 		orig_cursor = VIsual;
2775 		VIsual_active = TRUE;
2776 		VIsual_reselect = TRUE;
2777 		/* start Select mode if 'selectmode' contains "mouse" */
2778 		may_start_select('o');
2779 		setmouse();
2780 	    }
2781 	    if ((mod_mask & MOD_MASK_MULTI_CLICK) == MOD_MASK_2CLICK)
2782 		VIsual_mode = 'v';
2783 	    else if ((mod_mask & MOD_MASK_MULTI_CLICK) == MOD_MASK_3CLICK)
2784 		VIsual_mode = 'V';
2785 	    else if ((mod_mask & MOD_MASK_MULTI_CLICK) == MOD_MASK_4CLICK)
2786 		VIsual_mode = Ctrl_V;
2787 #ifdef FEAT_CLIPBOARD
2788 	    /* Make sure the clipboard gets updated.  Needed because start and
2789 	     * end may still be the same, and the selection needs to be owned */
2790 	    clip_star.vmode = NUL;
2791 #endif
2792 	}
2793 	/*
2794 	 * A double click selects a word or a block.
2795 	 */
2796 	if ((mod_mask & MOD_MASK_MULTI_CLICK) == MOD_MASK_2CLICK)
2797 	{
2798 	    pos_T	*pos = NULL;
2799 
2800 	    if (is_click)
2801 	    {
2802 		/* If the character under the cursor (skipping white space) is
2803 		 * not a word character, try finding a match and select a (),
2804 		 * {}, [], #if/#endif, etc. block. */
2805 		end_visual = curwin->w_cursor;
2806 		while (vim_iswhite(gchar_pos(&end_visual)))
2807 		    inc(&end_visual);
2808 		if (oap != NULL)
2809 		    oap->motion_type = MCHAR;
2810 		if (oap != NULL
2811 			&& VIsual_mode == 'v'
2812 			&& !vim_iswordc(gchar_pos(&end_visual))
2813 			&& equalpos(curwin->w_cursor, VIsual)
2814 			&& (pos = findmatch(oap, NUL)) != NULL)
2815 		{
2816 		    curwin->w_cursor = *pos;
2817 		    if (oap->motion_type == MLINE)
2818 			VIsual_mode = 'V';
2819 		    else if (*p_sel == 'e')
2820 		    {
2821 			if (lt(curwin->w_cursor, VIsual))
2822 			    ++VIsual.col;
2823 			else
2824 			    ++curwin->w_cursor.col;
2825 		    }
2826 		}
2827 	    }
2828 
2829 	    if (pos == NULL && (is_click || is_drag))
2830 	    {
2831 		/* When not found a match or when dragging: extend to include
2832 		 * a word. */
2833 		if (lt(curwin->w_cursor, orig_cursor))
2834 		{
2835 		    find_start_of_word(&curwin->w_cursor);
2836 		    find_end_of_word(&VIsual);
2837 		}
2838 		else
2839 		{
2840 		    find_start_of_word(&VIsual);
2841 		    if (*p_sel == 'e' && *ml_get_cursor() != NUL)
2842 #ifdef FEAT_MBYTE
2843 			curwin->w_cursor.col +=
2844 					 (*mb_ptr2len_check)(ml_get_cursor());
2845 #else
2846 			++curwin->w_cursor.col;
2847 #endif
2848 		    find_end_of_word(&curwin->w_cursor);
2849 		}
2850 	    }
2851 	    curwin->w_set_curswant = TRUE;
2852 	}
2853 	if (is_click)
2854 	    redraw_curbuf_later(INVERTED);	/* update the inversion */
2855     }
2856     else if (VIsual_active && !old_active)
2857 	VIsual_mode = 'v';
2858 
2859     /* If Visual mode changed show it later. */
2860     if (p_smd && (VIsual_active != old_active || VIsual_mode != old_mode))
2861 	redraw_cmdline = TRUE;
2862 #endif
2863 
2864     return moved;
2865 }
2866 
2867 #ifdef FEAT_VISUAL
2868 /*
2869  * Move "pos" back to the start of the word it's in.
2870  */
2871     static void
2872 find_start_of_word(pos)
2873     pos_T	*pos;
2874 {
2875     char_u	*line;
2876     int		cclass;
2877     int		col;
2878 
2879     line = ml_get(pos->lnum);
2880     cclass = get_mouse_class(line + pos->col);
2881 
2882     while (pos->col > 0)
2883     {
2884 	col = pos->col - 1;
2885 #ifdef FEAT_MBYTE
2886 	col -= (*mb_head_off)(line, line + col);
2887 #endif
2888 	if (get_mouse_class(line + col) != cclass)
2889 	    break;
2890 	pos->col = col;
2891     }
2892 }
2893 
2894 /*
2895  * Move "pos" forward to the end of the word it's in.
2896  * When 'selection' is "exclusive", the position is just after the word.
2897  */
2898     static void
2899 find_end_of_word(pos)
2900     pos_T	*pos;
2901 {
2902     char_u	*line;
2903     int		cclass;
2904     int		col;
2905 
2906     line = ml_get(pos->lnum);
2907     if (*p_sel == 'e' && pos->col > 0)
2908     {
2909 	--pos->col;
2910 #ifdef FEAT_MBYTE
2911 	pos->col -= (*mb_head_off)(line, line + pos->col);
2912 #endif
2913     }
2914     cclass = get_mouse_class(line + pos->col);
2915     while (line[pos->col] != NUL)
2916     {
2917 #ifdef FEAT_MBYTE
2918 	col = pos->col + (*mb_ptr2len_check)(line + pos->col);
2919 #else
2920 	col = pos->col + 1;
2921 #endif
2922 	if (get_mouse_class(line + col) != cclass)
2923 	{
2924 	    if (*p_sel == 'e')
2925 		pos->col = col;
2926 	    break;
2927 	}
2928 	pos->col = col;
2929     }
2930 }
2931 
2932 /*
2933  * Get class of a character for selection: same class means same word.
2934  * 0: blank
2935  * 1: punctuation groups
2936  * 2: normal word character
2937  * >2: multi-byte word character.
2938  */
2939     static int
2940 get_mouse_class(p)
2941     char_u	*p;
2942 {
2943     int		c;
2944 
2945 #ifdef FEAT_MBYTE
2946     if (has_mbyte && MB_BYTE2LEN(p[0]) > 1)
2947 	return mb_get_class(p);
2948 #endif
2949 
2950     c = *p;
2951     if (c == ' ' || c == '\t')
2952 	return 0;
2953 
2954     if (vim_iswordc(c))
2955 	return 2;
2956 
2957     /*
2958      * There are a few special cases where we want certain combinations of
2959      * characters to be considered as a single word.  These are things like
2960      * "->", "/ *", "*=", "+=", "&=", "<=", ">=", "!=" etc.  Otherwise, each
2961      * character is in it's own class.
2962      */
2963     if (c != NUL && vim_strchr((char_u *)"-+*/%<>&|^!=", c) != NULL)
2964 	return 1;
2965     return c;
2966 }
2967 #endif /* FEAT_VISUAL */
2968 #endif /* FEAT_MOUSE */
2969 
2970 #if defined(FEAT_VISUAL) || defined(PROTO)
2971 /*
2972  * Check if  highlighting for visual mode is possible, give a warning message
2973  * if not.
2974  */
2975     void
2976 check_visual_highlight()
2977 {
2978     static int	    did_check = FALSE;
2979 
2980     if (full_screen)
2981     {
2982 	if (!did_check && hl_attr(HLF_V) == 0)
2983 	    MSG(_("Warning: terminal cannot highlight"));
2984 	did_check = TRUE;
2985     }
2986 }
2987 
2988 /*
2989  * End visual mode.
2990  * This function should ALWAYS be called to end Visual mode, except from
2991  * do_pending_operator().
2992  */
2993     void
2994 end_visual_mode()
2995 {
2996 #ifdef FEAT_CLIPBOARD
2997     /*
2998      * If we are using the clipboard, then remember what was selected in case
2999      * we need to paste it somewhere while we still own the selection.
3000      * Only do this when the clipboard is already owned.  Don't want to grab
3001      * the selection when hitting ESC.
3002      */
3003     if (clip_star.available && clip_star.owned)
3004 	clip_auto_select();
3005 #endif
3006 
3007     VIsual_active = FALSE;
3008 #ifdef FEAT_MOUSE
3009     setmouse();
3010     mouse_dragging = 0;
3011 #endif
3012 
3013     /* Save the current VIsual area for '< and '> marks, and "gv" */
3014     curbuf->b_visual_mode = VIsual_mode;
3015 #ifdef FEAT_EVAL
3016     curbuf->b_visual_mode_eval = VIsual_mode;
3017 #endif
3018     curbuf->b_visual_start = VIsual;
3019     curbuf->b_visual_end = curwin->w_cursor;
3020     curbuf->b_visual_curswant = curwin->w_curswant;
3021 #ifdef FEAT_VIRTUALEDIT
3022     if (!virtual_active())
3023 	curwin->w_cursor.coladd = 0;
3024 #endif
3025 
3026     if (p_smd)
3027 	clear_cmdline = TRUE;		/* unshow visual mode later */
3028 #ifdef FEAT_CMDL_INFO
3029     else
3030 	clear_showcmd();
3031 #endif
3032 
3033     /* Don't leave the cursor past the end of the line */
3034     if (curwin->w_cursor.col > 0 && *ml_get_cursor() == NUL)
3035 	--curwin->w_cursor.col;
3036 }
3037 
3038 /*
3039  * Reset VIsual_active and VIsual_reselect.
3040  */
3041     void
3042 reset_VIsual_and_resel()
3043 {
3044     if (VIsual_active)
3045     {
3046 	end_visual_mode();
3047 	redraw_curbuf_later(INVERTED);	/* delete the inversion later */
3048     }
3049     VIsual_reselect = FALSE;
3050 }
3051 
3052 /*
3053  * Reset VIsual_active and VIsual_reselect if it's set.
3054  */
3055     void
3056 reset_VIsual()
3057 {
3058     if (VIsual_active)
3059     {
3060 	end_visual_mode();
3061 	redraw_curbuf_later(INVERTED);	/* delete the inversion later */
3062 	VIsual_reselect = FALSE;
3063     }
3064 }
3065 #endif /* FEAT_VISUAL */
3066 
3067 #if defined(FEAT_NETBEANS_INTG) && defined(FEAT_BEVAL)
3068 static int find_is_eval_item __ARGS((char_u *ptr, int *colp, int *nbp, int dir));
3069 
3070 /*
3071  * Check for a balloon-eval special item to include when searching for an
3072  * identifier.  When "dir" is BACKWARD "ptr[-1]" must be valid!
3073  * Returns TRUE if the character at "*ptr" should be included.
3074  * "dir" is FORWARD or BACKWARD, the direction of searching.
3075  * "*colp" is in/decremented if "ptr[-dir]" should also be included.
3076  * "bnp" points to a counter for square brackets.
3077  */
3078     static int
3079 find_is_eval_item(ptr, colp, bnp, dir)
3080     char_u	*ptr;
3081     int		*colp;
3082     int		*bnp;
3083     int		dir;
3084 {
3085     /* Accept everything inside []. */
3086     if ((*ptr == ']' && dir == BACKWARD) || (*ptr == '[' && dir == FORWARD))
3087 	++*bnp;
3088     if (*bnp > 0)
3089     {
3090 	if ((*ptr == '[' && dir == BACKWARD) || (*ptr == ']' && dir == FORWARD))
3091 	    --*bnp;
3092 	return TRUE;
3093     }
3094 
3095     /* skip over "s.var" */
3096     if (*ptr == '.')
3097 	return TRUE;
3098 
3099     /* two-character item: s->var */
3100     if (ptr[dir == BACKWARD ? 0 : 1] == '>'
3101 	    && ptr[dir == BACKWARD ? -1 : 0] == '-')
3102     {
3103 	*colp += dir;
3104 	return TRUE;
3105     }
3106     return FALSE;
3107 }
3108 #endif
3109 
3110 /*
3111  * Find the identifier under or to the right of the cursor.
3112  * "find_type" can have one of three values:
3113  * FIND_IDENT:   find an identifier (keyword)
3114  * FIND_STRING:  find any non-white string
3115  * FIND_IDENT + FIND_STRING: find any non-white string, identifier preferred.
3116  *
3117  * There are three steps:
3118  * 1. Search forward for the start of an identifier/string.  Doesn't move if
3119  *    already on one.
3120  * 2. Search backward for the start of this identifier/string.
3121  *    This doesn't match the real Vi but I like it a little better and it
3122  *    shouldn't bother anyone.
3123  * 3. Search forward to the end of this identifier/string.
3124  *    When FIND_IDENT isn't defined, we backup until a blank.
3125  *
3126  * Returns the length of the string, or zero if no string is found.
3127  * If a string is found, a pointer to the string is put in "*string".  This
3128  * string is not always NUL terminated.
3129  */
3130     int
3131 find_ident_under_cursor(string, find_type)
3132     char_u	**string;
3133     int		find_type;
3134 {
3135     return find_ident_at_pos(curwin, curwin->w_cursor.lnum,
3136 				     curwin->w_cursor.col, string, find_type);
3137 }
3138 
3139 /*
3140  * Like find_ident_under_cursor(), but for any window and any position.
3141  * However: Uses 'iskeyword' from the current window!.
3142  */
3143     int
3144 find_ident_at_pos(wp, lnum, startcol, string, find_type)
3145     win_T	*wp;
3146     linenr_T	lnum;
3147     colnr_T	startcol;
3148     char_u	**string;
3149     int		find_type;
3150 {
3151     char_u	*ptr;
3152     int		col = 0;	    /* init to shut up GCC */
3153     int		i;
3154 #ifdef FEAT_MBYTE
3155     int		this_class = 0;
3156     int		prev_class;
3157     int		prevcol;
3158 #endif
3159 #if defined(FEAT_NETBEANS_INTG) && defined(FEAT_BEVAL)
3160     int		bn = 0;	    /* bracket nesting */
3161 #endif
3162 
3163     /*
3164      * if i == 0: try to find an identifier
3165      * if i == 1: try to find any non-white string
3166      */
3167     ptr = ml_get_buf(wp->w_buffer, lnum, FALSE);
3168     for (i = (find_type & FIND_IDENT) ? 0 : 1;	i < 2; ++i)
3169     {
3170 	/*
3171 	 * 1. skip to start of identifier/string
3172 	 */
3173 	col = startcol;
3174 #ifdef FEAT_MBYTE
3175 	if (has_mbyte)
3176 	{
3177 	    while (ptr[col] != NUL)
3178 	    {
3179 # if defined(FEAT_NETBEANS_INTG) && defined(FEAT_BEVAL)
3180 		/* Stop at a ']' to evaluate "a[x]". */
3181 		if ((find_type & FIND_EVAL) && ptr[col] == ']')
3182 		    break;
3183 # endif
3184 		this_class = mb_get_class(ptr + col);
3185 		if (this_class != 0 && (i == 1 || this_class != 1))
3186 		    break;
3187 		col += (*mb_ptr2len_check)(ptr + col);
3188 	    }
3189 	}
3190 	else
3191 #endif
3192 	    while (ptr[col] != NUL
3193 		    && (i == 0 ? !vim_iswordc(ptr[col]) : vim_iswhite(ptr[col]))
3194 # if defined(FEAT_NETBEANS_INTG) && defined(FEAT_BEVAL)
3195 		    && (!(find_type & FIND_EVAL) || ptr[col] != ']')
3196 # endif
3197 		    )
3198 		++col;
3199 
3200 #if defined(FEAT_NETBEANS_INTG) && defined(FEAT_BEVAL)
3201 	/* When starting on a ']' count it, so that we include the '['. */
3202 	bn = ptr[col] == ']';
3203 #endif
3204 
3205 	/*
3206 	 * 2. Back up to start of identifier/string.
3207 	 */
3208 #ifdef FEAT_MBYTE
3209 	if (has_mbyte)
3210 	{
3211 	    /* Remember class of character under cursor. */
3212 # if defined(FEAT_NETBEANS_INTG) && defined(FEAT_BEVAL)
3213 	    if ((find_type & FIND_EVAL) && ptr[col] == ']')
3214 		this_class = mb_get_class((char_u *)"a");
3215 	    else
3216 # endif
3217 		this_class = mb_get_class(ptr + col);
3218 	    while (col > 0)
3219 	    {
3220 		prevcol = col - 1 - (*mb_head_off)(ptr, ptr + col - 1);
3221 		prev_class = mb_get_class(ptr + prevcol);
3222 		if (this_class != prev_class
3223 			&& (i == 0
3224 			    || prev_class == 0
3225 			    || (find_type & FIND_IDENT))
3226 # if defined(FEAT_NETBEANS_INTG) && defined(FEAT_BEVAL)
3227 			&& (!(find_type & FIND_EVAL)
3228 			    || prevcol == 0
3229 			    || !find_is_eval_item(ptr + prevcol, &prevcol,
3230 							       &bn, BACKWARD))
3231 # endif
3232 			)
3233 		    break;
3234 		col = prevcol;
3235 	    }
3236 
3237 	    /* If we don't want just any old string, or we've found an
3238 	     * identifier, stop searching. */
3239 	    if (this_class > 2)
3240 		this_class = 2;
3241 	    if (!(find_type & FIND_STRING) || this_class == 2)
3242 		break;
3243 	}
3244 	else
3245 #endif
3246 	{
3247 	    while (col > 0
3248 		    && ((i == 0
3249 			    ? vim_iswordc(ptr[col - 1])
3250 			    : (!vim_iswhite(ptr[col - 1])
3251 				&& (!(find_type & FIND_IDENT)
3252 				    || !vim_iswordc(ptr[col - 1]))))
3253 #if defined(FEAT_NETBEANS_INTG) && defined(FEAT_BEVAL)
3254 			|| ((find_type & FIND_EVAL)
3255 			    && col > 1
3256 			    && find_is_eval_item(ptr + col - 1, &col,
3257 							       &bn, BACKWARD))
3258 #endif
3259 			))
3260 		--col;
3261 
3262 	    /* If we don't want just any old string, or we've found an
3263 	     * identifier, stop searching. */
3264 	    if (!(find_type & FIND_STRING) || vim_iswordc(ptr[col]))
3265 		break;
3266 	}
3267     }
3268 
3269     if (ptr[col] == NUL || (i == 0 && (
3270 #ifdef FEAT_MBYTE
3271 		has_mbyte ? this_class != 2 :
3272 #endif
3273 		!vim_iswordc(ptr[col]))))
3274     {
3275 	/*
3276 	 * didn't find an identifier or string
3277 	 */
3278 	if (find_type & FIND_STRING)
3279 	    EMSG(_("E348: No string under cursor"));
3280 	else
3281 	    EMSG(_("E349: No identifier under cursor"));
3282 	return 0;
3283     }
3284     ptr += col;
3285     *string = ptr;
3286 
3287     /*
3288      * 3. Find the end if the identifier/string.
3289      */
3290 #if defined(FEAT_NETBEANS_INTG) && defined(FEAT_BEVAL)
3291     bn = 0;
3292     startcol -= col;
3293 #endif
3294     col = 0;
3295 #ifdef FEAT_MBYTE
3296     if (has_mbyte)
3297     {
3298 	/* Search for point of changing multibyte character class. */
3299 	this_class = mb_get_class(ptr);
3300 	while (ptr[col] != NUL
3301 		&& ((i == 0 ? mb_get_class(ptr + col) == this_class
3302 			    : mb_get_class(ptr + col) != 0)
3303 # if defined(FEAT_NETBEANS_INTG) && defined(FEAT_BEVAL)
3304 		    || ((find_type & FIND_EVAL)
3305 			&& col <= (int)startcol
3306 			&& find_is_eval_item(ptr + col, &col, &bn, FORWARD))
3307 # endif
3308 		))
3309 	    col += (*mb_ptr2len_check)(ptr + col);
3310     }
3311     else
3312 #endif
3313 	while ((i == 0 ? vim_iswordc(ptr[col])
3314 		       : (ptr[col] != NUL && !vim_iswhite(ptr[col])))
3315 # if defined(FEAT_NETBEANS_INTG) && defined(FEAT_BEVAL)
3316 		    || ((find_type & FIND_EVAL)
3317 			&& col <= (int)startcol
3318 			&& find_is_eval_item(ptr + col, &col, &bn, FORWARD))
3319 # endif
3320 		)
3321 	{
3322 	    ++col;
3323 	}
3324 
3325     return col;
3326 }
3327 
3328 /*
3329  * Prepare for redo of a normal command.
3330  */
3331     static void
3332 prep_redo_cmd(cap)
3333     cmdarg_T  *cap;
3334 {
3335     prep_redo(cap->oap->regname, cap->count0,
3336 				     NUL, cap->cmdchar, NUL, NUL, cap->nchar);
3337 }
3338 
3339 /*
3340  * Prepare for redo of any command.
3341  * Note that only the last argument can be a multi-byte char.
3342  */
3343     static void
3344 prep_redo(regname, num, cmd1, cmd2, cmd3, cmd4, cmd5)
3345     int	    regname;
3346     long    num;
3347     int	    cmd1;
3348     int	    cmd2;
3349     int	    cmd3;
3350     int	    cmd4;
3351     int	    cmd5;
3352 {
3353     ResetRedobuff();
3354     if (regname != 0)	/* yank from specified buffer */
3355     {
3356 	AppendCharToRedobuff('"');
3357 	AppendCharToRedobuff(regname);
3358     }
3359     if (num)
3360 	AppendNumberToRedobuff(num);
3361 
3362     if (cmd1 != NUL)
3363 	AppendCharToRedobuff(cmd1);
3364     if (cmd2 != NUL)
3365 	AppendCharToRedobuff(cmd2);
3366     if (cmd3 != NUL)
3367 	AppendCharToRedobuff(cmd3);
3368     if (cmd4 != NUL)
3369 	AppendCharToRedobuff(cmd4);
3370     if (cmd5 != NUL)
3371 	AppendCharToRedobuff(cmd5);
3372 }
3373 
3374 /*
3375  * check for operator active and clear it
3376  *
3377  * return TRUE if operator was active
3378  */
3379     static int
3380 checkclearop(oap)
3381     oparg_T	*oap;
3382 {
3383     if (oap->op_type == OP_NOP)
3384 	return FALSE;
3385     clearopbeep(oap);
3386     return TRUE;
3387 }
3388 
3389 /*
3390  * check for operator or Visual active and clear it
3391  *
3392  * return TRUE if operator was active
3393  */
3394     static int
3395 checkclearopq(oap)
3396     oparg_T	*oap;
3397 {
3398     if (oap->op_type == OP_NOP
3399 #ifdef FEAT_VISUAL
3400 	    && !VIsual_active
3401 #endif
3402 	    )
3403 	return FALSE;
3404     clearopbeep(oap);
3405     return TRUE;
3406 }
3407 
3408     static void
3409 clearop(oap)
3410     oparg_T	*oap;
3411 {
3412     oap->op_type = OP_NOP;
3413     oap->regname = 0;
3414     oap->motion_force = NUL;
3415     oap->use_reg_one = FALSE;
3416 }
3417 
3418     static void
3419 clearopbeep(oap)
3420     oparg_T	*oap;
3421 {
3422     clearop(oap);
3423     beep_flush();
3424 }
3425 
3426 #ifdef FEAT_VISUAL
3427 /*
3428  * Remove the shift modifier from a special key.
3429  */
3430     static void
3431 unshift_special(cap)
3432     cmdarg_T	*cap;
3433 {
3434     switch (cap->cmdchar)
3435     {
3436 	case K_S_RIGHT:	cap->cmdchar = K_RIGHT; break;
3437 	case K_S_LEFT:	cap->cmdchar = K_LEFT; break;
3438 	case K_S_UP:	cap->cmdchar = K_UP; break;
3439 	case K_S_DOWN:	cap->cmdchar = K_DOWN; break;
3440 	case K_S_HOME:	cap->cmdchar = K_HOME; break;
3441 	case K_S_END:	cap->cmdchar = K_END; break;
3442     }
3443     cap->cmdchar = simplify_key(cap->cmdchar, &mod_mask);
3444 }
3445 #endif
3446 
3447 #if defined(FEAT_CMDL_INFO) || defined(PROTO)
3448 /*
3449  * Routines for displaying a partly typed command
3450  */
3451 
3452 #ifdef FEAT_VISUAL	/* need room for size of Visual area */
3453 # define SHOWCMD_BUFLEN SHOWCMD_COLS + 1 + 30
3454 #else
3455 # define SHOWCMD_BUFLEN SHOWCMD_COLS + 1
3456 #endif
3457 static char_u	showcmd_buf[SHOWCMD_BUFLEN];
3458 static char_u	old_showcmd_buf[SHOWCMD_BUFLEN];  /* For push_showcmd() */
3459 static int	showcmd_is_clear = TRUE;
3460 static int	showcmd_visual = FALSE;
3461 
3462 static void display_showcmd __ARGS((void));
3463 
3464     void
3465 clear_showcmd()
3466 {
3467     if (!p_sc)
3468 	return;
3469 
3470 #ifdef FEAT_VISUAL
3471     if (VIsual_active && !char_avail())
3472     {
3473 	int		i = lt(VIsual, curwin->w_cursor);
3474 	long		lines;
3475 	colnr_T		leftcol, rightcol;
3476 	linenr_T	top, bot;
3477 
3478 	/* Show the size of the Visual area. */
3479 	if (i)
3480 	{
3481 	    top = VIsual.lnum;
3482 	    bot = curwin->w_cursor.lnum;
3483 	}
3484 	else
3485 	{
3486 	    top = curwin->w_cursor.lnum;
3487 	    bot = VIsual.lnum;
3488 	}
3489 # ifdef FEAT_FOLDING
3490 	/* Include closed folds as a whole. */
3491 	hasFolding(top, &top, NULL);
3492 	hasFolding(bot, NULL, &bot);
3493 # endif
3494 	lines = bot - top + 1;
3495 
3496 	if (VIsual_mode == Ctrl_V)
3497 	{
3498 	    getvcols(curwin, &curwin->w_cursor, &VIsual, &leftcol, &rightcol);
3499 	    sprintf((char *)showcmd_buf, "%ldx%ld", lines,
3500 					      (long)(rightcol - leftcol + 1));
3501 	}
3502 	else if (VIsual_mode == 'V' || VIsual.lnum != curwin->w_cursor.lnum)
3503 	    sprintf((char *)showcmd_buf, "%ld", lines);
3504 	else
3505 	    sprintf((char *)showcmd_buf, "%ld", (long)(i
3506 		    ? curwin->w_cursor.col - VIsual.col
3507 		    : VIsual.col - curwin->w_cursor.col) + (*p_sel != 'e'));
3508 	showcmd_buf[SHOWCMD_COLS] = NUL;	/* truncate */
3509 	showcmd_visual = TRUE;
3510     }
3511     else
3512 #endif
3513     {
3514 	showcmd_buf[0] = NUL;
3515 	showcmd_visual = FALSE;
3516 
3517 	/* Don't actually display something if there is nothing to clear. */
3518 	if (showcmd_is_clear)
3519 	    return;
3520     }
3521 
3522     display_showcmd();
3523 }
3524 
3525 /*
3526  * Add 'c' to string of shown command chars.
3527  * Return TRUE if output has been written (and setcursor() has been called).
3528  */
3529     int
3530 add_to_showcmd(c)
3531     int		c;
3532 {
3533     char_u	*p;
3534     int		old_len;
3535     int		extra_len;
3536     int		overflow;
3537 #if defined(FEAT_MOUSE)
3538     int		i;
3539     static int	ignore[] =
3540     {
3541 #ifdef FEAT_GUI
3542 	K_VER_SCROLLBAR, K_HOR_SCROLLBAR,
3543 	K_LEFTMOUSE_NM, K_LEFTRELEASE_NM,
3544 #endif
3545 	K_IGNORE,
3546 	K_LEFTMOUSE, K_LEFTDRAG, K_LEFTRELEASE,
3547 	K_MIDDLEMOUSE, K_MIDDLEDRAG, K_MIDDLERELEASE,
3548 	K_RIGHTMOUSE, K_RIGHTDRAG, K_RIGHTRELEASE,
3549 	K_MOUSEDOWN, K_MOUSEUP,
3550 	K_X1MOUSE, K_X1DRAG, K_X1RELEASE, K_X2MOUSE, K_X2DRAG, K_X2RELEASE,
3551 	0
3552     };
3553 #endif
3554 
3555     if (!p_sc)
3556 	return FALSE;
3557 
3558     if (showcmd_visual)
3559     {
3560 	showcmd_buf[0] = NUL;
3561 	showcmd_visual = FALSE;
3562     }
3563 
3564 #if defined(FEAT_MOUSE)
3565     /* Ignore keys that are scrollbar updates and mouse clicks */
3566     if (IS_SPECIAL(c))
3567 	for (i = 0; ignore[i] != 0; ++i)
3568 	    if (ignore[i] == c)
3569 		return FALSE;
3570 #endif
3571 
3572     p = transchar(c);
3573     old_len = (int)STRLEN(showcmd_buf);
3574     extra_len = (int)STRLEN(p);
3575     overflow = old_len + extra_len - SHOWCMD_COLS;
3576     if (overflow > 0)
3577 	STRCPY(showcmd_buf, showcmd_buf + overflow);
3578     STRCAT(showcmd_buf, p);
3579 
3580     if (char_avail())
3581 	return FALSE;
3582 
3583     display_showcmd();
3584 
3585     return TRUE;
3586 }
3587 
3588     void
3589 add_to_showcmd_c(c)
3590     int		c;
3591 {
3592     if (!add_to_showcmd(c))
3593 	setcursor();
3594 }
3595 
3596 /*
3597  * Delete 'len' characters from the end of the shown command.
3598  */
3599     static void
3600 del_from_showcmd(len)
3601     int	    len;
3602 {
3603     int	    old_len;
3604 
3605     if (!p_sc)
3606 	return;
3607 
3608     old_len = (int)STRLEN(showcmd_buf);
3609     if (len > old_len)
3610 	len = old_len;
3611     showcmd_buf[old_len - len] = NUL;
3612 
3613     if (!char_avail())
3614 	display_showcmd();
3615 }
3616 
3617 /*
3618  * push_showcmd() and pop_showcmd() are used when waiting for the user to type
3619  * something and there is a partial mapping.
3620  */
3621     void
3622 push_showcmd()
3623 {
3624     if (p_sc)
3625 	STRCPY(old_showcmd_buf, showcmd_buf);
3626 }
3627 
3628     void
3629 pop_showcmd()
3630 {
3631     if (!p_sc)
3632 	return;
3633 
3634     STRCPY(showcmd_buf, old_showcmd_buf);
3635 
3636     display_showcmd();
3637 }
3638 
3639     static void
3640 display_showcmd()
3641 {
3642     int	    len;
3643 
3644     cursor_off();
3645 
3646     len = (int)STRLEN(showcmd_buf);
3647     if (len == 0)
3648 	showcmd_is_clear = TRUE;
3649     else
3650     {
3651 	screen_puts(showcmd_buf, (int)Rows - 1, sc_col, 0);
3652 	showcmd_is_clear = FALSE;
3653     }
3654 
3655     /*
3656      * clear the rest of an old message by outputing up to SHOWCMD_COLS spaces
3657      */
3658     screen_puts((char_u *)"          " + len, (int)Rows - 1, sc_col + len, 0);
3659 
3660     setcursor();	    /* put cursor back where it belongs */
3661 }
3662 #endif
3663 
3664 #ifdef FEAT_SCROLLBIND
3665 /*
3666  * When "check" is FALSE, prepare for commands that scroll the window.
3667  * When "check" is TRUE, take care of scroll-binding after the window has
3668  * scrolled.  Called from normal_cmd() and edit().
3669  */
3670     void
3671 do_check_scrollbind(check)
3672     int		check;
3673 {
3674     static win_T	*old_curwin = NULL;
3675     static linenr_T	old_topline = 0;
3676 #ifdef FEAT_DIFF
3677     static int		old_topfill = 0;
3678 #endif
3679     static buf_T	*old_buf = NULL;
3680     static colnr_T	old_leftcol = 0;
3681 
3682     if (check && curwin->w_p_scb)
3683     {
3684 	/* If a ":syncbind" command was just used, don't scroll, only reset
3685 	 * the values. */
3686 	if (did_syncbind)
3687 	    did_syncbind = FALSE;
3688 	else if (curwin == old_curwin)
3689 	{
3690 	    /*
3691 	     * Synchronize other windows, as necessary according to
3692 	     * 'scrollbind'.  Don't do this after an ":edit" command, except
3693 	     * when 'diff' is set.
3694 	     */
3695 	    if ((curwin->w_buffer == old_buf
3696 #ifdef FEAT_DIFF
3697 			|| curwin->w_p_diff
3698 #endif
3699 		)
3700 		&& (curwin->w_topline != old_topline
3701 #ifdef FEAT_DIFF
3702 			|| curwin->w_topfill != old_topfill
3703 #endif
3704 			|| curwin->w_leftcol != old_leftcol))
3705 	    {
3706 		check_scrollbind(curwin->w_topline - old_topline,
3707 			(long)(curwin->w_leftcol - old_leftcol));
3708 	    }
3709 	}
3710 	else if (vim_strchr(p_sbo, 'j')) /* jump flag set in 'scrollopt' */
3711 	{
3712 	    /*
3713 	     * When switching between windows, make sure that the relative
3714 	     * vertical offset is valid for the new window.  The relative
3715 	     * offset is invalid whenever another 'scrollbind' window has
3716 	     * scrolled to a point that would force the current window to
3717 	     * scroll past the beginning or end of its buffer.  When the
3718 	     * resync is performed, some of the other 'scrollbind' windows may
3719 	     * need to jump so that the current window's relative position is
3720 	     * visible on-screen.
3721 	     */
3722 	    check_scrollbind(curwin->w_topline - curwin->w_scbind_pos, 0L);
3723 	}
3724 	curwin->w_scbind_pos = curwin->w_topline;
3725     }
3726 
3727     old_curwin = curwin;
3728     old_topline = curwin->w_topline;
3729 #ifdef FEAT_DIFF
3730     old_topfill = curwin->w_topfill;
3731 #endif
3732     old_buf = curwin->w_buffer;
3733     old_leftcol = curwin->w_leftcol;
3734 }
3735 
3736 /*
3737  * Synchronize any windows that have "scrollbind" set, based on the
3738  * number of rows by which the current window has changed
3739  * (1998-11-02 16:21:01  R. Edward Ralston <[email protected]>)
3740  */
3741     void
3742 check_scrollbind(topline_diff, leftcol_diff)
3743     linenr_T	topline_diff;
3744     long	leftcol_diff;
3745 {
3746     int		want_ver;
3747     int		want_hor;
3748     win_T	*old_curwin = curwin;
3749     buf_T	*old_curbuf = curbuf;
3750 #ifdef FEAT_VISUAL
3751     int		old_VIsual_select = VIsual_select;
3752     int		old_VIsual_active = VIsual_active;
3753 #endif
3754     colnr_T	tgt_leftcol = curwin->w_leftcol;
3755     long	topline;
3756     long	y;
3757 
3758     /*
3759      * check 'scrollopt' string for vertical and horizontal scroll options
3760      */
3761     want_ver = (vim_strchr(p_sbo, 'v') && topline_diff != 0);
3762 #ifdef FEAT_DIFF
3763     want_ver |= old_curwin->w_p_diff;
3764 #endif
3765     want_hor = (vim_strchr(p_sbo, 'h') && (leftcol_diff || topline_diff != 0));
3766 
3767     /*
3768      * loop through the scrollbound windows and scroll accordingly
3769      */
3770 #ifdef FEAT_VISUAL
3771     VIsual_select = VIsual_active = 0;
3772 #endif
3773     for (curwin = firstwin; curwin; curwin = curwin->w_next)
3774     {
3775 	curbuf = curwin->w_buffer;
3776 	/* skip original window  and windows with 'noscrollbind' */
3777 	if (curwin != old_curwin && curwin->w_p_scb)
3778 	{
3779 	    /*
3780 	     * do the vertical scroll
3781 	     */
3782 	    if (want_ver)
3783 	    {
3784 #ifdef FEAT_DIFF
3785 		if (old_curwin->w_p_diff && curwin->w_p_diff)
3786 		{
3787 		    diff_set_topline(old_curwin, curwin);
3788 		}
3789 		else
3790 #endif
3791 		{
3792 		    curwin->w_scbind_pos += topline_diff;
3793 		    topline = curwin->w_scbind_pos;
3794 		    if (topline > curbuf->b_ml.ml_line_count)
3795 			topline = curbuf->b_ml.ml_line_count;
3796 		    if (topline < 1)
3797 			topline = 1;
3798 
3799 		    y = topline - curwin->w_topline;
3800 		    if (y > 0)
3801 			scrollup(y, FALSE);
3802 		    else
3803 			scrolldown(-y, FALSE);
3804 		}
3805 
3806 		redraw_later(VALID);
3807 		cursor_correct();
3808 #ifdef FEAT_WINDOWS
3809 		curwin->w_redr_status = TRUE;
3810 #endif
3811 	    }
3812 
3813 	    /*
3814 	     * do the horizontal scroll
3815 	     */
3816 	    if (want_hor && curwin->w_leftcol != tgt_leftcol)
3817 	    {
3818 		curwin->w_leftcol = tgt_leftcol;
3819 		leftcol_changed();
3820 	    }
3821 	}
3822     }
3823 
3824     /*
3825      * reset current-window
3826      */
3827 #ifdef FEAT_VISUAL
3828     VIsual_select = old_VIsual_select;
3829     VIsual_active = old_VIsual_active;
3830 #endif
3831     curwin = old_curwin;
3832     curbuf = old_curbuf;
3833 }
3834 #endif /* #ifdef FEAT_SCROLLBIND */
3835 
3836 /*
3837  * Command character that's ignored.
3838  * Used for CTRL-Q and CTRL-S to avoid problems with terminals that use
3839  * xon/xoff
3840  */
3841 /*ARGSUSED */
3842     static void
3843 nv_ignore(cap)
3844     cmdarg_T	*cap;
3845 {
3846 }
3847 
3848 /*
3849  * Command character doesn't exist.
3850  */
3851     static void
3852 nv_error(cap)
3853     cmdarg_T	*cap;
3854 {
3855     clearopbeep(cap->oap);
3856 }
3857 
3858 /*
3859  * <Help> and <F1> commands.
3860  */
3861     static void
3862 nv_help(cap)
3863     cmdarg_T	*cap;
3864 {
3865     if (!checkclearopq(cap->oap))
3866 	ex_help(NULL);
3867 }
3868 
3869 /*
3870  * CTRL-A and CTRL-X: Add or subtract from letter or number under cursor.
3871  */
3872     static void
3873 nv_addsub(cap)
3874     cmdarg_T	*cap;
3875 {
3876     if (!checkclearopq(cap->oap)
3877 	    && do_addsub((int)cap->cmdchar, cap->count1) == OK)
3878 	prep_redo_cmd(cap);
3879 }
3880 
3881 /*
3882  * CTRL-F, CTRL-B, etc: Scroll page up or down.
3883  */
3884     static void
3885 nv_page(cap)
3886     cmdarg_T	*cap;
3887 {
3888     if (!checkclearop(cap->oap))
3889 	(void)onepage(cap->arg, cap->count1);
3890 }
3891 
3892 /*
3893  * Implementation of "gd" and "gD" command.
3894  */
3895     static void
3896 nv_gd(oap, nchar)
3897     oparg_T   *oap;
3898     int	    nchar;
3899 {
3900     int		len;
3901     char_u	*pat;
3902     pos_T	old_pos;
3903     int		t;
3904     int		save_p_ws;
3905     int		save_p_scs;
3906     char_u	*ptr;
3907 
3908     if ((len = find_ident_under_cursor(&ptr, FIND_IDENT)) == 0 ||
3909 					       (pat = alloc(len + 5)) == NULL)
3910     {
3911 	clearopbeep(oap);
3912 	return;
3913     }
3914     sprintf((char *)pat, vim_iswordp(ptr) ? "\\<%.*s\\>" : "%.*s", len, ptr);
3915     old_pos = curwin->w_cursor;
3916     save_p_ws = p_ws;
3917     save_p_scs = p_scs;
3918     p_ws = FALSE;	/* don't wrap around end of file now */
3919     p_scs = FALSE;	/* don't switch ignorecase off now */
3920 
3921     /*
3922      * With "gD" go to line 1.
3923      * With "gd" Search back for the start of the current function, then go
3924      * back until a blank line.  If this fails go to line 1.
3925      */
3926     if (nchar == 'D' || !findpar(oap, BACKWARD, 1L, '{', FALSE))
3927     {
3928 	setpcmark();			/* Set in findpar() otherwise */
3929 	curwin->w_cursor.lnum = 1;
3930     }
3931     else
3932     {
3933 	while (curwin->w_cursor.lnum > 1 && *skipwhite(ml_get_curline()) != NUL)
3934 	    --curwin->w_cursor.lnum;
3935     }
3936     curwin->w_cursor.col = 0;
3937 
3938     /* Search forward for the identifier, ignore comment lines. */
3939     while ((t = searchit(curwin, curbuf, &curwin->w_cursor, FORWARD, pat, 1L, 0,
3940 							     RE_LAST)) != FAIL
3941 #ifdef FEAT_COMMENTS
3942 	    && get_leader_len(ml_get_curline(), NULL, FALSE) > 0
3943 #endif
3944 	    && old_pos.lnum > curwin->w_cursor.lnum)
3945     {
3946 	/* Ignore this line, continue at start of next line. */
3947 	++curwin->w_cursor.lnum;
3948 	curwin->w_cursor.col = 0;
3949     }
3950     if (t == FAIL || old_pos.lnum <= curwin->w_cursor.lnum)
3951     {
3952 	clearopbeep(oap);
3953 	curwin->w_cursor = old_pos;
3954     }
3955     else
3956     {
3957 	curwin->w_set_curswant = TRUE;
3958 #ifdef FEAT_FOLDING
3959 	if ((fdo_flags & FDO_SEARCH) && KeyTyped && oap->op_type == OP_NOP)
3960 	    foldOpenCursor();
3961 #endif
3962 	/* "n" searches forward now */
3963 	reset_search_dir();
3964     }
3965 
3966     vim_free(pat);
3967     p_ws = save_p_ws;
3968     p_scs = save_p_scs;
3969 }
3970 
3971 /*
3972  * Move 'dist' lines in direction 'dir', counting lines by *screen*
3973  * lines rather than lines in the file.
3974  * 'dist' must be positive.
3975  *
3976  * Return OK if able to move cursor, FAIL otherwise.
3977  */
3978     static int
3979 nv_screengo(oap, dir, dist)
3980     oparg_T	*oap;
3981     int		dir;
3982     long	dist;
3983 {
3984     int		linelen = linetabsize(ml_get_curline());
3985     int		retval = OK;
3986     int		atend = FALSE;
3987     int		n;
3988     int		col_off1;	/* margin offset for first screen line */
3989     int		col_off2;	/* margin offset for wrapped screen line */
3990     int		width1;		/* text width for first screen line */
3991     int		width2;		/* test width for wrapped screen line */
3992 
3993     oap->motion_type = MCHAR;
3994     oap->inclusive = FALSE;
3995 
3996     col_off1 = curwin_col_off();
3997     col_off2 = col_off1 - curwin_col_off2();
3998     width1 = W_WIDTH(curwin) - col_off1;
3999     width2 = W_WIDTH(curwin) - col_off2;
4000 
4001 #ifdef FEAT_VERTSPLIT
4002     if (curwin->w_width != 0)
4003     {
4004 #endif
4005       /*
4006        * Instead of sticking at the last character of the buffer line we
4007        * try to stick in the last column of the screen.
4008        */
4009       if (curwin->w_curswant == MAXCOL)
4010       {
4011 	atend = TRUE;
4012 	validate_virtcol();
4013 	if (width1 <= 0)
4014 	    curwin->w_curswant = 0;
4015 	else
4016 	{
4017 	    curwin->w_curswant = width1 - 1;
4018 	    if (curwin->w_virtcol > curwin->w_curswant)
4019 		curwin->w_curswant += ((curwin->w_virtcol
4020 			     - curwin->w_curswant - 1) / width2 + 1) * width2;
4021 	}
4022       }
4023       else
4024       {
4025 	if (linelen > width1)
4026 	    n = ((linelen - width1 - 1) / width2 + 1) * width2 + width1;
4027 	else
4028 	    n = width1;
4029 	if (curwin->w_curswant > (colnr_T)n + 1)
4030 	    curwin->w_curswant -= ((curwin->w_curswant - n) / width2 + 1)
4031 								     * width2;
4032       }
4033 
4034       while (dist--)
4035       {
4036 	if (dir == BACKWARD)
4037 	{
4038 	    if ((long)curwin->w_curswant >= width2)
4039 		/* move back within line */
4040 		curwin->w_curswant -= width2;
4041 	    else
4042 	    {
4043 		/* to previous line */
4044 		if (curwin->w_cursor.lnum == 1)
4045 		{
4046 		    retval = FAIL;
4047 		    break;
4048 		}
4049 		--curwin->w_cursor.lnum;
4050 #ifdef FEAT_FOLDING
4051 		/* Move to the start of a closed fold.  Don't do that when
4052 		 * 'foldopen' contains "all": it will open in a moment. */
4053 		if (!(fdo_flags & FDO_ALL))
4054 		    (void)hasFolding(curwin->w_cursor.lnum,
4055 						&curwin->w_cursor.lnum, NULL);
4056 #endif
4057 		linelen = linetabsize(ml_get_curline());
4058 		if (linelen > width1)
4059 		    curwin->w_curswant += (((linelen - width1 - 1) / width2)
4060 								+ 1) * width2;
4061 	    }
4062 	}
4063 	else /* dir == FORWARD */
4064 	{
4065 	    if (linelen > width1)
4066 		n = ((linelen - width1 - 1) / width2 + 1) * width2 + width1;
4067 	    else
4068 		n = width1;
4069 	    if (curwin->w_curswant + width2 < (colnr_T)n)
4070 		/* move forward within line */
4071 		curwin->w_curswant += width2;
4072 	    else
4073 	    {
4074 		/* to next line */
4075 #ifdef FEAT_FOLDING
4076 		/* Move to the end of a closed fold. */
4077 		(void)hasFolding(curwin->w_cursor.lnum, NULL,
4078 						      &curwin->w_cursor.lnum);
4079 #endif
4080 		if (curwin->w_cursor.lnum == curbuf->b_ml.ml_line_count)
4081 		{
4082 		    retval = FAIL;
4083 		    break;
4084 		}
4085 		curwin->w_cursor.lnum++;
4086 		curwin->w_curswant %= width2;
4087 	    }
4088 	}
4089       }
4090 #ifdef FEAT_VERTSPLIT
4091     }
4092 #endif
4093 
4094     coladvance(curwin->w_curswant);
4095 
4096 #if defined(FEAT_LINEBREAK) || defined(FEAT_MBYTE)
4097     if (curwin->w_cursor.col > 0 && curwin->w_p_wrap)
4098     {
4099 	/*
4100 	 * Check for landing on a character that got split at the end of the
4101 	 * last line.  We want to advance a screenline, not end up in the same
4102 	 * screenline or move two screenlines.
4103 	 */
4104 	validate_virtcol();
4105 	if (curwin->w_virtcol > curwin->w_curswant
4106 		&& (curwin->w_curswant < (colnr_T)width1
4107 		    ? (curwin->w_curswant > (colnr_T)width1 / 2)
4108 		    : ((curwin->w_curswant - width1) % width2
4109 						      > (colnr_T)width2 / 2)))
4110 	    --curwin->w_cursor.col;
4111     }
4112 #endif
4113 
4114     if (atend)
4115 	curwin->w_curswant = MAXCOL;	    /* stick in the last column */
4116 
4117     return retval;
4118 }
4119 
4120 #ifdef FEAT_MOUSE
4121 /*
4122  * Mouse scroll wheel: Default action is to scroll three lines, or one page
4123  * when Shift or Ctrl is used.
4124  * K_MOUSEUP (cap->arg == TRUE) or K_MOUSEDOWN (cap->arg == FALSE)
4125  */
4126     static void
4127 nv_mousescroll(cap)
4128     cmdarg_T	*cap;
4129 {
4130 # if defined(FEAT_GUI) && defined(FEAT_WINDOWS)
4131     win_T *old_curwin;
4132 
4133     old_curwin = curwin;
4134 
4135     /* Currently we only get the mouse coordinates in the GUI. */
4136     if (gui.in_use && mouse_row >= 0 && mouse_col >= 0)
4137     {
4138 	int row, col;
4139 
4140 	row = mouse_row;
4141 	col = mouse_col;
4142 
4143 	/* find the window at the pointer coordinates */
4144 	curwin = mouse_find_win(&row, &col);
4145 	curbuf = curwin->w_buffer;
4146     }
4147 # endif
4148 
4149     if (mod_mask & (MOD_MASK_SHIFT | MOD_MASK_CTRL))
4150     {
4151 	(void)onepage(cap->arg ? FORWARD : BACKWARD, 1L);
4152     }
4153     else
4154     {
4155 	cap->count1 = 3;
4156 	cap->count0 = 3;
4157 	nv_scroll_line(cap);
4158     }
4159 
4160 # if defined(FEAT_GUI) && defined(FEAT_WINDOWS)
4161     curwin->w_redr_status = TRUE;
4162 
4163     curwin = old_curwin;
4164     curbuf = curwin->w_buffer;
4165 # endif
4166 }
4167 
4168 /*
4169  * Mouse clicks and drags.
4170  */
4171     static void
4172 nv_mouse(cap)
4173     cmdarg_T	*cap;
4174 {
4175     (void)do_mouse(cap->oap, cap->cmdchar, BACKWARD, cap->count1, 0);
4176 }
4177 #endif
4178 
4179 /*
4180  * Handle CTRL-E and CTRL-Y commands: scroll a line up or down.
4181  * cap->arg must be TRUE for CTRL-E.
4182  */
4183     static void
4184 nv_scroll_line(cap)
4185     cmdarg_T	*cap;
4186 {
4187     if (!checkclearop(cap->oap))
4188 	scroll_redraw(cap->arg, cap->count1);
4189 }
4190 
4191 /*
4192  * Scroll "count" lines up or down, and redraw.
4193  */
4194     void
4195 scroll_redraw(up, count)
4196     int		up;
4197     long	count;
4198 {
4199     linenr_T	prev_topline = curwin->w_topline;
4200 #ifdef FEAT_DIFF
4201     int		prev_topfill = curwin->w_topfill;
4202 #endif
4203     linenr_T	prev_lnum = curwin->w_cursor.lnum;
4204 
4205     if (up)
4206 	scrollup(count, TRUE);
4207     else
4208 	scrolldown(count, TRUE);
4209     if (p_so)
4210     {
4211 	/* Adjust the cursor position for 'scrolloff'.  Mark w_topline as
4212 	 * valid, otherwise the screen jumps back at the end of the file. */
4213 	cursor_correct();
4214 	check_cursor_moved(curwin);
4215 	curwin->w_valid |= VALID_TOPLINE;
4216 
4217 	/* If moved back to where we were, at least move the cursor, otherwise
4218 	 * we get stuck at one position.  Don't move the cursor up if the
4219 	 * first line of the buffer is already on the screen */
4220 	while (curwin->w_topline == prev_topline
4221 #ifdef FEAT_DIFF
4222 		&& curwin->w_topfill == prev_topfill
4223 #endif
4224 		)
4225 	{
4226 	    if (up)
4227 	    {
4228 		if (curwin->w_cursor.lnum > prev_lnum
4229 			|| cursor_down(1L, FALSE) == FAIL)
4230 		    break;
4231 	    }
4232 	    else
4233 	    {
4234 		if (curwin->w_cursor.lnum < prev_lnum
4235 			|| prev_topline == 1L
4236 			|| cursor_up(1L, FALSE) == FAIL)
4237 		    break;
4238 	    }
4239 	    /* Mark w_topline as valid, otherwise the screen jumps back at the
4240 	     * end of the file. */
4241 	    check_cursor_moved(curwin);
4242 	    curwin->w_valid |= VALID_TOPLINE;
4243 	}
4244     }
4245     if (curwin->w_cursor.lnum != prev_lnum)
4246 	coladvance(curwin->w_curswant);
4247     redraw_later(VALID);
4248 }
4249 
4250 /*
4251  * Commands that start with "z".
4252  */
4253     static void
4254 nv_zet(cap)
4255     cmdarg_T  *cap;
4256 {
4257     long	n;
4258     colnr_T	col;
4259     int		nchar = cap->nchar;
4260 #ifdef FEAT_FOLDING
4261     long	old_fdl = curwin->w_p_fdl;
4262     int		old_fen = curwin->w_p_fen;
4263 #endif
4264 
4265     if (VIM_ISDIGIT(nchar))
4266     {
4267 	/*
4268 	 * "z123{nchar}": edit the count before obtaining {nchar}
4269 	 */
4270 	if (checkclearop(cap->oap))
4271 	    return;
4272 	n = nchar - '0';
4273 	for (;;)
4274 	{
4275 #ifdef USE_ON_FLY_SCROLL
4276 	    dont_scroll = TRUE;		/* disallow scrolling here */
4277 #endif
4278 	    ++no_mapping;
4279 	    ++allow_keys;   /* no mapping for nchar, but allow key codes */
4280 	    nchar = safe_vgetc();
4281 #ifdef FEAT_LANGMAP
4282 	    LANGMAP_ADJUST(nchar, TRUE);
4283 #endif
4284 	    --no_mapping;
4285 	    --allow_keys;
4286 #ifdef FEAT_CMDL_INFO
4287 	    (void)add_to_showcmd(nchar);
4288 #endif
4289 	    if (nchar == K_DEL || nchar == K_KDEL)
4290 		n /= 10;
4291 	    else if (VIM_ISDIGIT(nchar))
4292 		n = n * 10 + (nchar - '0');
4293 	    else if (nchar == CAR)
4294 	    {
4295 #ifdef FEAT_GUI
4296 		need_mouse_correct = TRUE;
4297 #endif
4298 		win_setheight((int)n);
4299 		break;
4300 	    }
4301 	    else if (nchar == 'l'
4302 		    || nchar == 'h'
4303 		    || nchar == K_LEFT
4304 		    || nchar == K_RIGHT)
4305 	    {
4306 		cap->count1 = n ? n * cap->count1 : cap->count1;
4307 		goto dozet;
4308 	    }
4309 	    else
4310 	    {
4311 		clearopbeep(cap->oap);
4312 		break;
4313 	    }
4314 	}
4315 	cap->oap->op_type = OP_NOP;
4316 	return;
4317     }
4318 
4319 dozet:
4320     if (
4321 #ifdef FEAT_FOLDING
4322 	    /* "zf" and "zF" are always an operator, "zd", "zo", "zO", "zc"
4323 	     * and "zC" only in Visual mode.  "zj" and "zk" are motion
4324 	     * commands. */
4325 	    cap->nchar != 'f' && cap->nchar != 'F'
4326 	    && !(VIsual_active && vim_strchr((char_u *)"dcCoO", cap->nchar))
4327 	    && cap->nchar != 'j' && cap->nchar != 'k'
4328 	    &&
4329 #endif
4330 	    checkclearop(cap->oap))
4331 	return;
4332 
4333     /*
4334      * For "z+", "z<CR>", "zt", "z.", "zz", "z^", "z-", "zb":
4335      * If line number given, set cursor.
4336      */
4337     if ((vim_strchr((char_u *)"+\r\nt.z^-b", nchar) != NULL)
4338 	    && cap->count0
4339 	    && cap->count0 != curwin->w_cursor.lnum)
4340     {
4341 	setpcmark();
4342 	if (cap->count0 > curbuf->b_ml.ml_line_count)
4343 	    curwin->w_cursor.lnum = curbuf->b_ml.ml_line_count;
4344 	else
4345 	    curwin->w_cursor.lnum = cap->count0;
4346     }
4347 
4348     switch (nchar)
4349     {
4350 		/* "z+", "z<CR>" and "zt": put cursor at top of screen */
4351     case '+':
4352 		if (cap->count0 == 0)
4353 		{
4354 		    /* No count given: put cursor at the line below screen */
4355 		    validate_botline();	/* make sure w_botline is valid */
4356 		    if (curwin->w_botline > curbuf->b_ml.ml_line_count)
4357 			curwin->w_cursor.lnum = curbuf->b_ml.ml_line_count;
4358 		    else
4359 			curwin->w_cursor.lnum = curwin->w_botline;
4360 		}
4361 		/* FALLTHROUGH */
4362     case NL:
4363     case CAR:
4364     case K_KENTER:
4365 		beginline(BL_WHITE | BL_FIX);
4366 		/* FALLTHROUGH */
4367 
4368     case 't':	scroll_cursor_top(0, TRUE);
4369 		redraw_later(VALID);
4370 		break;
4371 
4372 		/* "z." and "zz": put cursor in middle of screen */
4373     case '.':	beginline(BL_WHITE | BL_FIX);
4374 		/* FALLTHROUGH */
4375 
4376     case 'z':	scroll_cursor_halfway(TRUE);
4377 		redraw_later(VALID);
4378 		break;
4379 
4380 		/* "z^", "z-" and "zb": put cursor at bottom of screen */
4381     case '^':	/* Strange Vi behavior: <count>z^ finds line at top of window
4382 		 * when <count> is at bottom of window, and puts that one at
4383 		 * bottom of window. */
4384 		if (cap->count0 != 0)
4385 		{
4386 		    scroll_cursor_bot(0, TRUE);
4387 		    curwin->w_cursor.lnum = curwin->w_topline;
4388 		}
4389 		else if (curwin->w_topline == 1)
4390 		    curwin->w_cursor.lnum = 1;
4391 		else
4392 		    curwin->w_cursor.lnum = curwin->w_topline - 1;
4393 		/* FALLTHROUGH */
4394     case '-':
4395 		beginline(BL_WHITE | BL_FIX);
4396 		/* FALLTHROUGH */
4397 
4398     case 'b':	scroll_cursor_bot(0, TRUE);
4399 		redraw_later(VALID);
4400 		break;
4401 
4402 		/* "zH" - scroll screen right half-page */
4403     case 'H':
4404 		cap->count1 *= W_WIDTH(curwin) / 2;
4405 		/* FALLTHROUGH */
4406 
4407 		/* "zh" - scroll screen to the right */
4408     case 'h':
4409     case K_LEFT:
4410 		if (!curwin->w_p_wrap)
4411 		{
4412 		    if ((colnr_T)cap->count1 > curwin->w_leftcol)
4413 			curwin->w_leftcol = 0;
4414 		    else
4415 			curwin->w_leftcol -= (colnr_T)cap->count1;
4416 		    leftcol_changed();
4417 		}
4418 		break;
4419 
4420 		/* "zL" - scroll screen left half-page */
4421     case 'L':	cap->count1 *= W_WIDTH(curwin) / 2;
4422 		/* FALLTHROUGH */
4423 
4424 		/* "zl" - scroll screen to the left */
4425     case 'l':
4426     case K_RIGHT:
4427 		if (!curwin->w_p_wrap)
4428 		{
4429 		    /* scroll the window left */
4430 		    curwin->w_leftcol += (colnr_T)cap->count1;
4431 		    leftcol_changed();
4432 		}
4433 		break;
4434 
4435 		/* "zs" - scroll screen, cursor at the start */
4436     case 's':	if (!curwin->w_p_wrap)
4437 		{
4438 #ifdef FEAT_FOLDING
4439 		    if (hasFolding(curwin->w_cursor.lnum, NULL, NULL))
4440 			col = 0;	/* like the cursor is in col 0 */
4441 		    else
4442 #endif
4443 		    getvcol(curwin, &curwin->w_cursor, &col, NULL, NULL);
4444 		    if ((long)col > p_siso)
4445 			col -= p_siso;
4446 		    else
4447 			col = 0;
4448 		    if (curwin->w_leftcol != col)
4449 		    {
4450 			curwin->w_leftcol = col;
4451 			redraw_later(NOT_VALID);
4452 		    }
4453 		}
4454 		break;
4455 
4456 		/* "ze" - scroll screen, cursor at the end */
4457     case 'e':	if (!curwin->w_p_wrap)
4458 		{
4459 #ifdef FEAT_FOLDING
4460 		    if (hasFolding(curwin->w_cursor.lnum, NULL, NULL))
4461 			col = 0;	/* like the cursor is in col 0 */
4462 		    else
4463 #endif
4464 		    getvcol(curwin, &curwin->w_cursor, NULL, NULL, &col);
4465 		    n = W_WIDTH(curwin) - curwin_col_off();
4466 		    if ((long)col + p_siso < n)
4467 			col = 0;
4468 		    else
4469 			col = col + p_siso - n + 1;
4470 		    if (curwin->w_leftcol != col)
4471 		    {
4472 			curwin->w_leftcol = col;
4473 			redraw_later(NOT_VALID);
4474 		    }
4475 		}
4476 		break;
4477 
4478 #ifdef FEAT_FOLDING
4479 		/* "zF": create fold command */
4480 		/* "zf": create fold operator */
4481     case 'F':
4482     case 'f':   if (foldManualAllowed(TRUE))
4483 		{
4484 		    cap->nchar = 'f';
4485 		    nv_operator(cap);
4486 		    curwin->w_p_fen = TRUE;
4487 
4488 		    /* "zF" is like "zfzf" */
4489 		    if (nchar == 'F' && cap->oap->op_type == OP_FOLD)
4490 		    {
4491 			nv_operator(cap);
4492 			finish_op = TRUE;
4493 		    }
4494 		}
4495 		else
4496 		    clearopbeep(cap->oap);
4497 		break;
4498 
4499 		/* "zd": delete fold at cursor */
4500 		/* "zD": delete fold at cursor recursively */
4501     case 'd':
4502     case 'D':	if (foldManualAllowed(FALSE))
4503 		{
4504 		    if (VIsual_active)
4505 			nv_operator(cap);
4506 		    else
4507 			deleteFold(curwin->w_cursor.lnum,
4508 				  curwin->w_cursor.lnum, nchar == 'D', FALSE);
4509 		}
4510 		break;
4511 
4512 		/* "zE": erease all folds */
4513     case 'E':	if (foldmethodIsManual(curwin))
4514 		{
4515 		    clearFolding(curwin);
4516 		    changed_window_setting();
4517 		}
4518 		else if (foldmethodIsMarker(curwin))
4519 		    deleteFold((linenr_T)1, curbuf->b_ml.ml_line_count,
4520 								 TRUE, FALSE);
4521 		else
4522 		    EMSG(_("E352: Cannot erase folds with current 'foldmethod'"));
4523 		break;
4524 
4525 		/* "zn": fold none: reset 'foldenable' */
4526     case 'n':	curwin->w_p_fen = FALSE;
4527 		break;
4528 
4529 		/* "zN": fold Normal: set 'foldenable' */
4530     case 'N':	curwin->w_p_fen = TRUE;
4531 		break;
4532 
4533 		/* "zi": invert folding: toggle 'foldenable' */
4534     case 'i':	curwin->w_p_fen = !curwin->w_p_fen;
4535 		break;
4536 
4537 		/* "za": open closed fold or close open fold at cursor */
4538     case 'a':	if (hasFolding(curwin->w_cursor.lnum, NULL, NULL))
4539 		    openFold(curwin->w_cursor.lnum, cap->count1);
4540 		else
4541 		{
4542 		    closeFold(curwin->w_cursor.lnum, cap->count1);
4543 		    curwin->w_p_fen = TRUE;
4544 		}
4545 		break;
4546 
4547 		/* "zA": open fold at cursor recursively */
4548     case 'A':	if (hasFolding(curwin->w_cursor.lnum, NULL, NULL))
4549 		    openFoldRecurse(curwin->w_cursor.lnum);
4550 		else
4551 		{
4552 		    closeFoldRecurse(curwin->w_cursor.lnum);
4553 		    curwin->w_p_fen = TRUE;
4554 		}
4555 		break;
4556 
4557 		/* "zo": open fold at cursor or Visual area */
4558     case 'o':	if (VIsual_active)
4559 		    nv_operator(cap);
4560 		else
4561 		    openFold(curwin->w_cursor.lnum, cap->count1);
4562 		break;
4563 
4564 		/* "zO": open fold recursively */
4565     case 'O':	if (VIsual_active)
4566 		    nv_operator(cap);
4567 		else
4568 		    openFoldRecurse(curwin->w_cursor.lnum);
4569 		break;
4570 
4571 		/* "zc": close fold at cursor or Visual area */
4572     case 'c':	if (VIsual_active)
4573 		    nv_operator(cap);
4574 		else
4575 		    closeFold(curwin->w_cursor.lnum, cap->count1);
4576 		curwin->w_p_fen = TRUE;
4577 		break;
4578 
4579 		/* "zC": close fold recursively */
4580     case 'C':	if (VIsual_active)
4581 		    nv_operator(cap);
4582 		else
4583 		    closeFoldRecurse(curwin->w_cursor.lnum);
4584 		curwin->w_p_fen = TRUE;
4585 		break;
4586 
4587 		/* "zv": open folds at the cursor */
4588     case 'v':	foldOpenCursor();
4589 		break;
4590 
4591 		/* "zx": re-apply 'foldlevel' and open folds at the cursor */
4592     case 'x':	curwin->w_p_fen = TRUE;
4593 		newFoldLevel();		/* update right now */
4594 		foldOpenCursor();
4595 		break;
4596 
4597 		/* "zX": undo manual opens/closes, re-apply 'foldlevel' */
4598     case 'X':	curwin->w_p_fen = TRUE;
4599 		old_fdl = -1;		/* force an update */
4600 		break;
4601 
4602 		/* "zm": fold more */
4603     case 'm':	if (curwin->w_p_fdl > 0)
4604 		    --curwin->w_p_fdl;
4605 		old_fdl = -1;		/* force an update */
4606 		curwin->w_p_fen = TRUE;
4607 		break;
4608 
4609 		/* "zM": close all folds */
4610     case 'M':	curwin->w_p_fdl = 0;
4611 		old_fdl = -1;		/* force an update */
4612 		curwin->w_p_fen = TRUE;
4613 		break;
4614 
4615 		/* "zr": reduce folding */
4616     case 'r':	++curwin->w_p_fdl;
4617 		break;
4618 
4619 		/* "zR": open all folds */
4620     case 'R':	curwin->w_p_fdl = getDeepestNesting();
4621 		old_fdl = -1;		/* force an update */
4622 		break;
4623 
4624     case 'j':	/* "zj" move to next fold downwards */
4625     case 'k':	/* "zk" move to next fold upwards */
4626 		if (foldMoveTo(TRUE, nchar == 'j' ? FORWARD : BACKWARD,
4627 							  cap->count1) == FAIL)
4628 		    clearopbeep(cap->oap);
4629 		break;
4630 
4631 #endif /* FEAT_FOLDING */
4632 
4633     default:	clearopbeep(cap->oap);
4634     }
4635 
4636 #ifdef FEAT_FOLDING
4637     /* Redraw when 'foldenable' changed */
4638     if (old_fen != curwin->w_p_fen)
4639     {
4640 # ifdef FEAT_DIFF
4641 	win_T	    *wp;
4642 
4643 	if (foldmethodIsDiff(curwin) && curwin->w_p_scb)
4644 	{
4645 	    /* Adjust 'foldenable' in diff-synced windows. */
4646 	    FOR_ALL_WINDOWS(wp)
4647 	    {
4648 		if (wp != curwin && foldmethodIsDiff(wp) && wp->w_p_scb)
4649 		{
4650 		    wp->w_p_fen = curwin->w_p_fen;
4651 		    changed_window_setting_win(wp);
4652 		}
4653 	    }
4654 	}
4655 # endif
4656 	changed_window_setting();
4657     }
4658 
4659     /* Redraw when 'foldlevel' changed. */
4660     if (old_fdl != curwin->w_p_fdl)
4661 	newFoldLevel();
4662 #endif
4663 }
4664 
4665 #ifdef FEAT_GUI
4666 /*
4667  * Vertical scrollbar movement.
4668  */
4669     static void
4670 nv_ver_scrollbar(cap)
4671     cmdarg_T	*cap;
4672 {
4673     if (cap->oap->op_type != OP_NOP)
4674 	clearopbeep(cap->oap);
4675 
4676     /* Even if an operator was pending, we still want to scroll */
4677     gui_do_scroll();
4678 }
4679 
4680 /*
4681  * Horizontal scrollbar movement.
4682  */
4683     static void
4684 nv_hor_scrollbar(cap)
4685     cmdarg_T	*cap;
4686 {
4687     if (cap->oap->op_type != OP_NOP)
4688 	clearopbeep(cap->oap);
4689 
4690     /* Even if an operator was pending, we still want to scroll */
4691     gui_do_horiz_scroll();
4692 }
4693 #endif
4694 
4695 /*
4696  * "Q" command.
4697  */
4698     static void
4699 nv_exmode(cap)
4700     cmdarg_T	*cap;
4701 {
4702     /*
4703      * Ignore 'Q' in Visual mode, just give a beep.
4704      */
4705 #ifdef FEAT_VISUAL
4706     if (VIsual_active)
4707 	vim_beep();
4708     else
4709 #endif
4710 	if (!checkclearop(cap->oap))
4711 	do_exmode(FALSE);
4712 }
4713 
4714 /*
4715  * Handle a ":" command.
4716  */
4717     static void
4718 nv_colon(cap)
4719     cmdarg_T  *cap;
4720 {
4721     int	    old_p_im;
4722 
4723 #ifdef FEAT_VISUAL
4724     if (VIsual_active)
4725 	nv_operator(cap);
4726     else
4727 #endif
4728     {
4729 	if (cap->oap->op_type != OP_NOP)
4730 	{
4731 	    /* Using ":" as a movement is characterwise exclusive. */
4732 	    cap->oap->motion_type = MCHAR;
4733 	    cap->oap->inclusive = FALSE;
4734 	}
4735 	else if (cap->count0)
4736 	{
4737 	    /* translate "count:" into ":.,.+(count - 1)" */
4738 	    stuffcharReadbuff('.');
4739 	    if (cap->count0 > 1)
4740 	    {
4741 		stuffReadbuff((char_u *)",.+");
4742 		stuffnumReadbuff((long)cap->count0 - 1L);
4743 	    }
4744 	}
4745 
4746 	/* When typing, don't type below an old message */
4747 	if (KeyTyped)
4748 	    compute_cmdrow();
4749 
4750 	old_p_im = p_im;
4751 
4752 	/* get a command line and execute it */
4753 	do_cmdline(NULL, getexline, NULL,
4754 			    cap->oap->op_type != OP_NOP ? DOCMD_KEEPLINE : 0);
4755 
4756 	/* If 'insertmode' changed, enter or exit Insert mode */
4757 	if (p_im != old_p_im)
4758 	{
4759 	    if (p_im)
4760 		restart_edit = 'i';
4761 	    else
4762 		restart_edit = 0;
4763 	}
4764 
4765 	/* The start of the operator may have become invalid by the Ex
4766 	 * command. */
4767 	if (cap->oap->op_type != OP_NOP
4768 		&& (cap->oap->start.lnum > curbuf->b_ml.ml_line_count
4769 		    || cap->oap->start.col >
4770 					 STRLEN(ml_get(cap->oap->start.lnum))))
4771 	    clearopbeep(cap->oap);
4772     }
4773 }
4774 
4775 /*
4776  * Handle CTRL-G command.
4777  */
4778     static void
4779 nv_ctrlg(cap)
4780     cmdarg_T *cap;
4781 {
4782 #ifdef FEAT_VISUAL
4783     if (VIsual_active)	/* toggle Selection/Visual mode */
4784     {
4785 	VIsual_select = !VIsual_select;
4786 	showmode();
4787     }
4788     else
4789 #endif
4790 	if (!checkclearop(cap->oap))
4791 	/* print full name if count given or :cd used */
4792 	fileinfo((int)cap->count0, FALSE, TRUE);
4793 }
4794 
4795 /*
4796  * Handle CTRL-H <Backspace> command.
4797  */
4798     static void
4799 nv_ctrlh(cap)
4800     cmdarg_T *cap;
4801 {
4802 #ifdef FEAT_VISUAL
4803     if (VIsual_active && VIsual_select)
4804     {
4805 	cap->cmdchar = 'x';	/* BS key behaves like 'x' in Select mode */
4806 	v_visop(cap);
4807     }
4808     else
4809 #endif
4810 	nv_left(cap);
4811 }
4812 
4813 /*
4814  * CTRL-L: clear screen and redraw.
4815  */
4816     static void
4817 nv_clear(cap)
4818     cmdarg_T	*cap;
4819 {
4820     if (!checkclearop(cap->oap))
4821     {
4822 #if defined(__BEOS__) && !USE_THREAD_FOR_INPUT_WITH_TIMEOUT
4823 	/*
4824 	 * Right now, the BeBox doesn't seem to have an easy way to detect
4825 	 * window resizing, so we cheat and make the user detect it
4826 	 * manually with CTRL-L instead
4827 	 */
4828 	ui_get_shellsize();
4829 #endif
4830 #ifdef FEAT_SYN_HL
4831 	/* Clear all syntax states to force resyncing. */
4832 	syn_stack_free_all(curbuf);
4833 #endif
4834 	redraw_later(CLEAR);
4835     }
4836 }
4837 
4838 /*
4839  * CTRL-O: In Select mode: switch to Visual mode for one command.
4840  * Otherwise: Go to older pcmark.
4841  */
4842     static void
4843 nv_ctrlo(cap)
4844     cmdarg_T	*cap;
4845 {
4846 #ifdef FEAT_VISUAL
4847     if (VIsual_active && VIsual_select)
4848     {
4849 	VIsual_select = FALSE;
4850 	showmode();
4851 	restart_VIsual_select = 2;	/* restart Select mode later */
4852     }
4853     else
4854 #endif
4855     {
4856 	cap->count1 = -cap->count1;
4857 	nv_pcmark(cap);
4858     }
4859 }
4860 
4861 /*
4862  * CTRL-^ command, short for ":e #"
4863  */
4864     static void
4865 nv_hat(cap)
4866     cmdarg_T	*cap;
4867 {
4868     if (!checkclearopq(cap->oap))
4869 	(void)buflist_getfile((int)cap->count0, (linenr_T)0,
4870 						GETF_SETMARK|GETF_ALT, FALSE);
4871 }
4872 
4873 /*
4874  * "Z" commands.
4875  */
4876     static void
4877 nv_Zet(cap)
4878     cmdarg_T *cap;
4879 {
4880     if (!checkclearopq(cap->oap))
4881     {
4882 	switch (cap->nchar)
4883 	{
4884 			/* "ZZ": equivalent to ":x". */
4885 	    case 'Z':	do_cmdline_cmd((char_u *)"x");
4886 			break;
4887 
4888 			/* "ZQ": equivalent to ":q!" (Elvis compatible). */
4889 	    case 'Q':	do_cmdline_cmd((char_u *)"q!");
4890 			break;
4891 
4892 	    default:	clearopbeep(cap->oap);
4893 	}
4894     }
4895 }
4896 
4897 #if defined(FEAT_WINDOWS) || defined(PROTO)
4898 /*
4899  * Call nv_ident() as if "c1" was used, with "c2" as next character.
4900  */
4901     void
4902 do_nv_ident(c1, c2)
4903     int		c1;
4904     int		c2;
4905 {
4906     oparg_T	oa;
4907     cmdarg_T	ca;
4908 
4909     clear_oparg(&oa);
4910     vim_memset(&ca, 0, sizeof(ca));
4911     ca.oap = &oa;
4912     ca.cmdchar = c1;
4913     ca.nchar = c2;
4914     nv_ident(&ca);
4915 }
4916 #endif
4917 
4918 /*
4919  * Handle the commands that use the word under the cursor.
4920  * [g] CTRL-]	:ta to current identifier
4921  * [g] 'K'	run program for current identifier
4922  * [g] '*'	/ to current identifier or string
4923  * [g] '#'	? to current identifier or string
4924  *  g  ']'	:tselect for current identifier
4925  */
4926     static void
4927 nv_ident(cap)
4928     cmdarg_T	*cap;
4929 {
4930     char_u	*ptr = NULL;
4931     char_u	*buf;
4932     char_u	*p;
4933     char_u	*kp;		/* value of 'keywordprg' */
4934     int		kp_help;	/* 'keywordprg' is ":help" */
4935     int		n = 0;		/* init for GCC */
4936     int		cmdchar;
4937     int		g_cmd;		/* "g" command */
4938     char_u	*aux_ptr;
4939     int		isman;
4940     int		isman_s;
4941 
4942     if (cap->cmdchar == 'g')	/* "g*", "g#", "g]" and "gCTRL-]" */
4943     {
4944 	cmdchar = cap->nchar;
4945 	g_cmd = TRUE;
4946     }
4947     else
4948     {
4949 	cmdchar = cap->cmdchar;
4950 	g_cmd = FALSE;
4951     }
4952 
4953     if (cmdchar == POUND)	/* the pound sign, '#' for English keyboards */
4954 	cmdchar = '#';
4955 
4956     /*
4957      * The "]", "CTRL-]" and "K" commands accept an argument in Visual mode.
4958      */
4959     if (cmdchar == ']' || cmdchar == Ctrl_RSB || cmdchar == 'K')
4960     {
4961 #ifdef FEAT_VISUAL
4962 	if (VIsual_active && get_visual_text(cap, &ptr, &n) == FAIL)
4963 	    return;
4964 #endif
4965 	if (checkclearopq(cap->oap))
4966 	    return;
4967     }
4968 
4969     if (ptr == NULL && (n = find_ident_under_cursor(&ptr,
4970 		    (cmdchar == '*' || cmdchar == '#')
4971 				 ? FIND_IDENT|FIND_STRING : FIND_IDENT)) == 0)
4972     {
4973 	clearop(cap->oap);
4974 	return;
4975     }
4976 
4977     /* Allocate buffer to put the command in.  Inserting backslashes can
4978      * double the length of the word.  p_kp / curbuf->b_p_kp could be added
4979      * and some numbers. */
4980     kp = (*curbuf->b_p_kp == NUL ? p_kp : curbuf->b_p_kp);
4981     kp_help = (*kp == NUL || STRCMP(kp, ":he") == 0
4982 						 || STRCMP(kp, ":help") == 0);
4983     buf = alloc((unsigned)(n * 2 + 30 + STRLEN(kp)));
4984     if (buf == NULL)
4985 	return;
4986     buf[0] = NUL;
4987 
4988     switch (cmdchar)
4989     {
4990 	case '*':
4991 	case '#':
4992 	    /*
4993 	     * Put cursor at start of word, makes search skip the word
4994 	     * under the cursor.
4995 	     * Call setpcmark() first, so "*``" puts the cursor back where
4996 	     * it was.
4997 	     */
4998 	    setpcmark();
4999 	    curwin->w_cursor.col = (colnr_T) (ptr - ml_get_curline());
5000 
5001 	    if (!g_cmd && vim_iswordp(ptr))
5002 		STRCPY(buf, "\\<");
5003 	    no_smartcase = TRUE;	/* don't use 'smartcase' now */
5004 	    break;
5005 
5006 	case 'K':
5007 	    if (kp_help)
5008 		STRCPY(buf, "he! ");
5009 	    else
5010 	    {
5011 		/* When a count is given, turn it into a range.  Is this
5012 		 * really what we want? */
5013 		isman = (STRCMP(kp, "man") == 0);
5014 		isman_s = (STRCMP(kp, "man -s") == 0);
5015 		if (cap->count0 != 0 && !(isman || isman_s))
5016 		    sprintf((char *)buf, ".,.+%ld", cap->count0 - 1);
5017 
5018 		STRCAT(buf, "! ");
5019 		if (cap->count0 == 0 && isman_s)
5020 		    STRCAT(buf, "man");
5021 		else
5022 		    STRCAT(buf, kp);
5023 		STRCAT(buf, " ");
5024 		if (cap->count0 != 0 && (isman || isman_s))
5025 		{
5026 		    sprintf((char *)buf + STRLEN(buf), "%ld", cap->count0);
5027 		    STRCAT(buf, " ");
5028 		}
5029 	    }
5030 	    break;
5031 
5032 	case ']':
5033 #ifdef FEAT_CSCOPE
5034 	    if (p_cst)
5035 		STRCPY(buf, "cstag ");
5036 	    else
5037 #endif
5038 		STRCPY(buf, "ts ");
5039 	    break;
5040 
5041 	default:
5042 	    if (curbuf->b_help)
5043 		STRCPY(buf, "he! ");
5044 	    else if (g_cmd)
5045 		STRCPY(buf, "tj ");
5046 	    else
5047 		STRCPY(buf, "ta ");
5048     }
5049 
5050     /*
5051      * Now grab the chars in the identifier
5052      */
5053     if (cmdchar == '*')
5054 	aux_ptr = (char_u *)(p_magic ? "/.*~[^$\\" : "/^$\\");
5055     else if (cmdchar == '#')
5056 	aux_ptr = (char_u *)(p_magic ? "/?.*~[^$\\" : "/?^$\\");
5057     else if (cmdchar == 'K' && !kp_help)
5058 	aux_ptr = (char_u *)" \t\\\"|!";
5059     else
5060 	/* Don't escape spaces and Tabs in a tag with a backslash */
5061 	aux_ptr = (char_u *)"\\|\"";
5062 
5063     p = buf + STRLEN(buf);
5064     while (n-- > 0)
5065     {
5066 	/* put a backslash before \ and some others */
5067 	if (vim_strchr(aux_ptr, *ptr) != NULL)
5068 	    *p++ = '\\';
5069 #ifdef FEAT_MBYTE
5070 	/* When current byte is a part of multibyte character, copy all bytes
5071 	 * of that character. */
5072 	if (has_mbyte)
5073 	{
5074 	    int i;
5075 	    int len = (*mb_ptr2len_check)(ptr) - 1;
5076 
5077 	    for (i = 0; i < len && n >= 1; ++i, --n)
5078 		*p++ = *ptr++;
5079 	}
5080 #endif
5081 	*p++ = *ptr++;
5082     }
5083     *p = NUL;
5084 
5085     /*
5086      * Execute the command.
5087      */
5088     if (cmdchar == '*' || cmdchar == '#')
5089     {
5090 	if (!g_cmd && (
5091 #ifdef FEAT_MBYTE
5092 		has_mbyte ? vim_iswordp(mb_prevptr(ml_get_curline(), ptr)) :
5093 #endif
5094 		vim_iswordc(ptr[-1])))
5095 	    STRCAT(buf, "\\>");
5096 #ifdef FEAT_CMDHIST
5097 	/* put pattern in search history */
5098 	add_to_history(HIST_SEARCH, buf, TRUE, NUL);
5099 #endif
5100 	normal_search(cap, cmdchar == '*' ? '/' : '?', buf, 0);
5101     }
5102     else
5103 	do_cmdline_cmd(buf);
5104 
5105     vim_free(buf);
5106 }
5107 
5108 #ifdef FEAT_VISUAL
5109 /*
5110  * Get visually selected text, within one line only.
5111  * Returns FAIL if more than one line selected.
5112  */
5113     static int
5114 get_visual_text(cap, pp, lenp)
5115     cmdarg_T	*cap;
5116     char_u	**pp;	    /* return: start of selected text */
5117     int		*lenp;	    /* return: length of selected text */
5118 {
5119     if (VIsual_mode != 'V')
5120 	unadjust_for_sel();
5121     if (VIsual.lnum != curwin->w_cursor.lnum)
5122     {
5123 	clearopbeep(cap->oap);
5124 	return FAIL;
5125     }
5126     if (VIsual_mode == 'V')
5127     {
5128 	*pp = ml_get_curline();
5129 	*lenp = (int)STRLEN(*pp);
5130     }
5131     else
5132     {
5133 	if (lt(curwin->w_cursor, VIsual))
5134 	{
5135 	    *pp = ml_get_pos(&curwin->w_cursor);
5136 	    *lenp = VIsual.col - curwin->w_cursor.col + 1;
5137 	}
5138 	else
5139 	{
5140 	    *pp = ml_get_pos(&VIsual);
5141 	    *lenp = curwin->w_cursor.col - VIsual.col + 1;
5142 	}
5143 #ifdef FEAT_MBYTE
5144 	if (has_mbyte)
5145 	    /* Correct the length to include the whole last character. */
5146 	    *lenp += (*mb_ptr2len_check)(*pp + (*lenp - 1)) - 1;
5147 #endif
5148     }
5149     reset_VIsual_and_resel();
5150     return OK;
5151 }
5152 #endif
5153 
5154 /*
5155  * CTRL-T: backwards in tag stack
5156  */
5157     static void
5158 nv_tagpop(cap)
5159     cmdarg_T	*cap;
5160 {
5161     if (!checkclearopq(cap->oap))
5162 	do_tag((char_u *)"", DT_POP, (int)cap->count1, FALSE, TRUE);
5163 }
5164 
5165 /*
5166  * Handle scrolling command 'H', 'L' and 'M'.
5167  */
5168     static void
5169 nv_scroll(cap)
5170     cmdarg_T  *cap;
5171 {
5172     int		used = 0;
5173     long	n;
5174 #ifdef FEAT_FOLDING
5175     linenr_T	lnum;
5176 #endif
5177     int		half;
5178 
5179     cap->oap->motion_type = MLINE;
5180     setpcmark();
5181 
5182     if (cap->cmdchar == 'L')
5183     {
5184 	validate_botline();	    /* make sure curwin->w_botline is valid */
5185 	curwin->w_cursor.lnum = curwin->w_botline - 1;
5186 	if (cap->count1 - 1 >= curwin->w_cursor.lnum)
5187 	    curwin->w_cursor.lnum = 1;
5188 	else
5189 	{
5190 #ifdef FEAT_FOLDING
5191 	    if (hasAnyFolding(curwin))
5192 	    {
5193 		/* Count a fold for one screen line. */
5194 		for (n = cap->count1 - 1; n > 0
5195 			    && curwin->w_cursor.lnum > curwin->w_topline; --n)
5196 		{
5197 		    (void)hasFolding(curwin->w_cursor.lnum,
5198 						&curwin->w_cursor.lnum, NULL);
5199 		    --curwin->w_cursor.lnum;
5200 		}
5201 	    }
5202 	    else
5203 #endif
5204 		curwin->w_cursor.lnum -= cap->count1 - 1;
5205 	}
5206     }
5207     else
5208     {
5209 	if (cap->cmdchar == 'M')
5210 	{
5211 #ifdef FEAT_DIFF
5212 	    /* Don't count filler lines above the window. */
5213 	    used -= diff_check_fill(curwin, curwin->w_topline)
5214 							  - curwin->w_topfill;
5215 #endif
5216 	    validate_botline();	    /* make sure w_empty_rows is valid */
5217 	    half = (curwin->w_height - curwin->w_empty_rows + 1) / 2;
5218 	    for (n = 0; curwin->w_topline + n < curbuf->b_ml.ml_line_count; ++n)
5219 	    {
5220 #ifdef FEAT_DIFF
5221 		/* Count half he number of filler lines to be "below this
5222 		 * line" and half to be "above the next line". */
5223 		if (n > 0 && used + diff_check_fill(curwin, curwin->w_topline
5224 							     + n) / 2 >= half)
5225 		{
5226 		    --n;
5227 		    break;
5228 		}
5229 #endif
5230 		used += plines(curwin->w_topline + n);
5231 		if (used >= half)
5232 		    break;
5233 #ifdef FEAT_FOLDING
5234 		if (hasFolding(curwin->w_topline + n, NULL, &lnum))
5235 		    n = lnum - curwin->w_topline;
5236 #endif
5237 	    }
5238 	    if (n > 0 && used > curwin->w_height)
5239 		--n;
5240 	}
5241 	else /* (cap->cmdchar == 'H') */
5242 	{
5243 	    n = cap->count1 - 1;
5244 #ifdef FEAT_FOLDING
5245 	    if (hasAnyFolding(curwin))
5246 	    {
5247 		/* Count a fold for one screen line. */
5248 		lnum = curwin->w_topline;
5249 		while (n-- > 0 && lnum < curwin->w_botline - 1)
5250 		{
5251 		    hasFolding(lnum, NULL, &lnum);
5252 		    ++lnum;
5253 		}
5254 		n = lnum - curwin->w_topline;
5255 	    }
5256 #endif
5257 	}
5258 	curwin->w_cursor.lnum = curwin->w_topline + n;
5259 	if (curwin->w_cursor.lnum > curbuf->b_ml.ml_line_count)
5260 	    curwin->w_cursor.lnum = curbuf->b_ml.ml_line_count;
5261     }
5262 
5263     cursor_correct();	/* correct for 'so' */
5264     beginline(BL_SOL | BL_FIX);
5265 }
5266 
5267 /*
5268  * Cursor right commands.
5269  */
5270     static void
5271 nv_right(cap)
5272     cmdarg_T	*cap;
5273 {
5274     long	n;
5275 #ifdef FEAT_VISUAL
5276     int		PAST_LINE;
5277 #else
5278 # define PAST_LINE 0
5279 #endif
5280 
5281     cap->oap->motion_type = MCHAR;
5282     cap->oap->inclusive = FALSE;
5283 #ifdef FEAT_VISUAL
5284     PAST_LINE = (VIsual_active && *p_sel != 'o');
5285 
5286 # ifdef FEAT_VIRTUALEDIT
5287     /*
5288      * In virtual mode, there's no such thing as "PAST_LINE", as lines are
5289      * (theoretically) infinitly long.
5290      */
5291     if (virtual_active())
5292 	PAST_LINE = 0;
5293 # endif
5294 #endif
5295 
5296     for (n = cap->count1; n > 0; --n)
5297     {
5298 	if ((!PAST_LINE && oneright() == FAIL)
5299 		|| (PAST_LINE && *ml_get_cursor() == NUL))
5300 	{
5301 	    /*
5302 	     *	  <Space> wraps to next line if 'whichwrap' bit 1 set.
5303 	     *	      'l' wraps to next line if 'whichwrap' bit 2 set.
5304 	     * CURS_RIGHT wraps to next line if 'whichwrap' bit 3 set
5305 	     */
5306 	    if (       ((cap->cmdchar == ' '
5307 			    && vim_strchr(p_ww, 's') != NULL)
5308 			|| (cap->cmdchar == 'l'
5309 			    && vim_strchr(p_ww, 'l') != NULL)
5310 			|| (cap->cmdchar == K_RIGHT
5311 			    && vim_strchr(p_ww, '>') != NULL))
5312 		    && curwin->w_cursor.lnum < curbuf->b_ml.ml_line_count)
5313 	    {
5314 		/* When deleting we also count the NL as a character.
5315 		 * Set cap->oap->inclusive when last char in the line is
5316 		 * included, move to next line after that */
5317 		if (	   (cap->oap->op_type == OP_DELETE
5318 			    || cap->oap->op_type == OP_CHANGE)
5319 			&& !cap->oap->inclusive
5320 			&& !lineempty(curwin->w_cursor.lnum))
5321 		    cap->oap->inclusive = TRUE;
5322 		else
5323 		{
5324 		    ++curwin->w_cursor.lnum;
5325 		    curwin->w_cursor.col = 0;
5326 #ifdef FEAT_VIRTUALEDIT
5327 		    curwin->w_cursor.coladd = 0;
5328 #endif
5329 		    curwin->w_set_curswant = TRUE;
5330 		    cap->oap->inclusive = FALSE;
5331 		}
5332 		continue;
5333 	    }
5334 	    if (cap->oap->op_type == OP_NOP)
5335 	    {
5336 		/* Only beep and flush if not moved at all */
5337 		if (n == cap->count1)
5338 		    beep_flush();
5339 	    }
5340 	    else
5341 	    {
5342 		if (!lineempty(curwin->w_cursor.lnum))
5343 		    cap->oap->inclusive = TRUE;
5344 	    }
5345 	    break;
5346 	}
5347 #ifdef FEAT_VISUAL
5348 	else if (PAST_LINE)
5349 	{
5350 	    curwin->w_set_curswant = TRUE;
5351 # ifdef FEAT_VIRTUALEDIT
5352 	    if (virtual_active())
5353 		oneright();
5354 	    else
5355 # endif
5356 	    {
5357 # ifdef FEAT_MBYTE
5358 		if (has_mbyte)
5359 		    curwin->w_cursor.col +=
5360 					 (*mb_ptr2len_check)(ml_get_cursor());
5361 		else
5362 # endif
5363 		    ++curwin->w_cursor.col;
5364 	    }
5365 	}
5366 #endif
5367     }
5368 #ifdef FEAT_FOLDING
5369     if (n != cap->count1 && (fdo_flags & FDO_HOR) && KeyTyped
5370 					       && cap->oap->op_type == OP_NOP)
5371 	foldOpenCursor();
5372 #endif
5373 }
5374 
5375 /*
5376  * Cursor left commands.
5377  *
5378  * Returns TRUE when operator end should not be adjusted.
5379  */
5380     static void
5381 nv_left(cap)
5382     cmdarg_T	*cap;
5383 {
5384     long	n;
5385 
5386     cap->oap->motion_type = MCHAR;
5387     cap->oap->inclusive = FALSE;
5388     for (n = cap->count1; n > 0; --n)
5389     {
5390 	if (oneleft() == FAIL)
5391 	{
5392 	    /* <BS> and <Del> wrap to previous line if 'whichwrap' has 'b'.
5393 	     *		 'h' wraps to previous line if 'whichwrap' has 'h'.
5394 	     *	   CURS_LEFT wraps to previous line if 'whichwrap' has '<'.
5395 	     */
5396 	    if (       (((cap->cmdchar == K_BS
5397 				|| cap->cmdchar == Ctrl_H)
5398 			    && vim_strchr(p_ww, 'b') != NULL)
5399 			|| (cap->cmdchar == 'h'
5400 			    && vim_strchr(p_ww, 'h') != NULL)
5401 			|| (cap->cmdchar == K_LEFT
5402 			    && vim_strchr(p_ww, '<') != NULL))
5403 		    && curwin->w_cursor.lnum > 1)
5404 	    {
5405 		--(curwin->w_cursor.lnum);
5406 		coladvance((colnr_T)MAXCOL);
5407 		curwin->w_set_curswant = TRUE;
5408 
5409 		/* When the NL before the first char has to be deleted we
5410 		 * put the cursor on the NUL after the previous line.
5411 		 * This is a very special case, be careful!
5412 		 * don't adjust op_end now, otherwise it won't work */
5413 		if (	   (cap->oap->op_type == OP_DELETE
5414 			    || cap->oap->op_type == OP_CHANGE)
5415 			&& !lineempty(curwin->w_cursor.lnum))
5416 		{
5417 		    ++curwin->w_cursor.col;
5418 		    cap->retval |= CA_NO_ADJ_OP_END;
5419 		}
5420 		continue;
5421 	    }
5422 	    /* Only beep and flush if not moved at all */
5423 	    else if (cap->oap->op_type == OP_NOP && n == cap->count1)
5424 		beep_flush();
5425 	    break;
5426 	}
5427     }
5428 #ifdef FEAT_FOLDING
5429     if (n != cap->count1 && (fdo_flags & FDO_HOR) && KeyTyped
5430 					       && cap->oap->op_type == OP_NOP)
5431 	foldOpenCursor();
5432 #endif
5433 }
5434 
5435 /*
5436  * Cursor up commands.
5437  * cap->arg is TRUE for "-": Move cursor to first non-blank.
5438  */
5439     static void
5440 nv_up(cap)
5441     cmdarg_T	*cap;
5442 {
5443     cap->oap->motion_type = MLINE;
5444     if (cursor_up(cap->count1, cap->oap->op_type == OP_NOP) == FAIL)
5445 	clearopbeep(cap->oap);
5446     else if (cap->arg)
5447 	beginline(BL_WHITE | BL_FIX);
5448 }
5449 
5450 /*
5451  * Cursor down commands.
5452  * cap->arg is TRUE for CR and "+": Move cursor to first non-blank.
5453  */
5454     static void
5455 nv_down(cap)
5456     cmdarg_T	*cap;
5457 {
5458 #if defined(FEAT_WINDOWS) && defined(FEAT_QUICKFIX)
5459     /* In a quickfix window a <CR> jumps to the error under the cursor. */
5460     if (bt_quickfix(curbuf) && cap->cmdchar == '\r')
5461 	do_cmdline_cmd((char_u *)".cc");
5462     else
5463 #endif
5464     {
5465 #ifdef FEAT_CMDWIN
5466 	/* In the cmdline window a <CR> executes the command. */
5467 	if (cmdwin_type != 0 && cap->cmdchar == '\r')
5468 	    cmdwin_result = CAR;
5469 	else
5470 #endif
5471 	{
5472 	    cap->oap->motion_type = MLINE;
5473 	    if (cursor_down(cap->count1, cap->oap->op_type == OP_NOP) == FAIL)
5474 		clearopbeep(cap->oap);
5475 	    else if (cap->arg)
5476 		beginline(BL_WHITE | BL_FIX);
5477 	}
5478     }
5479 }
5480 
5481 #ifdef FEAT_SEARCHPATH
5482 /*
5483  * Grab the file name under the cursor and edit it.
5484  */
5485     static void
5486 nv_gotofile(cap)
5487     cmdarg_T	*cap;
5488 {
5489     char_u	*ptr;
5490 
5491 #ifdef FEAT_CMDWIN
5492     if (cmdwin_type != 0)
5493     {
5494 	clearopbeep(cap->oap);
5495 	return;
5496     }
5497 #endif
5498 
5499 # ifdef FEAT_VISUAL
5500     /*
5501      * In Visual mode, use the selected text as a file name.
5502      * Don't allow selection across multiple lines.
5503      */
5504     if (VIsual_active)
5505     {
5506 	int	len;
5507 
5508 	if (get_visual_text(cap, &ptr, &len) == FAIL)
5509 	    return;
5510 	ptr = find_file_name_in_path(ptr, len,
5511 	       FNAME_MESS|FNAME_EXP|FNAME_REL, cap->count1, curbuf->b_ffname);
5512     }
5513     else
5514 # endif
5515 	ptr = file_name_at_cursor(FNAME_MESS|FNAME_HYP|FNAME_EXP|FNAME_REL,
5516 								 cap->count1);
5517 
5518     if (ptr != NULL)
5519     {
5520 	/* do autowrite if necessary */
5521 	if (curbufIsChanged() && curbuf->b_nwindows <= 1 && !P_HID(curbuf))
5522 	    autowrite(curbuf, FALSE);
5523 	setpcmark();
5524 	(void)do_ecmd(0, ptr, NULL, NULL, ECMD_LAST,
5525 					       P_HID(curbuf) ? ECMD_HIDE : 0);
5526 	vim_free(ptr);
5527     }
5528     else
5529 	clearop(cap->oap);
5530 }
5531 #endif
5532 
5533 /*
5534  * <End> command: to end of current line or last line.
5535  */
5536     static void
5537 nv_end(cap)
5538     cmdarg_T	*cap;
5539 {
5540     if (cap->arg)	/* CTRL-END = goto last line */
5541     {
5542 	nv_goto(cap);
5543 	cap->count1 = 1;		/* to end of current line */
5544     }
5545     nv_dollar(cap);
5546 }
5547 
5548 /*
5549  * Handle the "$" command.
5550  */
5551     static void
5552 nv_dollar(cap)
5553     cmdarg_T	*cap;
5554 {
5555     cap->oap->motion_type = MCHAR;
5556     cap->oap->inclusive = TRUE;
5557 #ifdef FEAT_VIRTUALEDIT
5558     /* In virtual mode when off the edge of a line and an operator
5559      * is pending (whew!) keep the cursor where it is.
5560      * Otherwise, send it to the end of the line. */
5561     if (!virtual_active() || gchar_cursor() != NUL
5562 					       || cap->oap->op_type == OP_NOP)
5563 #endif
5564 	curwin->w_curswant = MAXCOL;	/* so we stay at the end */
5565     if (cursor_down((long)(cap->count1 - 1),
5566 					 cap->oap->op_type == OP_NOP) == FAIL)
5567 	clearopbeep(cap->oap);
5568 #ifdef FEAT_FOLDING
5569     else if ((fdo_flags & FDO_HOR) && KeyTyped && cap->oap->op_type == OP_NOP)
5570 	foldOpenCursor();
5571 #endif
5572 }
5573 
5574 /*
5575  * Implementation of '?' and '/' commands.
5576  * If cap->arg is TRUE don't set PC mark.
5577  */
5578     static void
5579 nv_search(cap)
5580     cmdarg_T	    *cap;
5581 {
5582     oparg_T	*oap = cap->oap;
5583 
5584     if (cap->cmdchar == '?' && cap->oap->op_type == OP_ROT13)
5585     {
5586 	/* Translate "g??" to "g?g?" */
5587 	cap->cmdchar = 'g';
5588 	cap->nchar = '?';
5589 	nv_operator(cap);
5590 	return;
5591     }
5592 
5593     cap->searchbuf = getcmdline(cap->cmdchar, cap->count1, 0);
5594 
5595     if (cap->searchbuf == NULL)
5596     {
5597 	clearop(oap);
5598 	return;
5599     }
5600 
5601     normal_search(cap, cap->cmdchar, cap->searchbuf,
5602 						(cap->arg ? 0 : SEARCH_MARK));
5603 }
5604 
5605 /*
5606  * Handle "N" and "n" commands.
5607  * cap->arg is SEARCH_REV for "N", 0 for "n".
5608  */
5609     static void
5610 nv_next(cap)
5611     cmdarg_T	*cap;
5612 {
5613     normal_search(cap, 0, NULL, SEARCH_MARK | cap->arg);
5614 }
5615 
5616 /*
5617  * Search for "pat" in direction "dir" ('/' or '?', 0 for repeat).
5618  * Uses only cap->count1 and cap->oap from "cap".
5619  */
5620     static void
5621 normal_search(cap, dir, pat, opt)
5622     cmdarg_T	*cap;
5623     int		dir;
5624     char_u	*pat;
5625     int		opt;		/* extra flags for do_search() */
5626 {
5627     int		i;
5628 
5629     cap->oap->motion_type = MCHAR;
5630     cap->oap->inclusive = FALSE;
5631     cap->oap->use_reg_one = TRUE;
5632     curwin->w_set_curswant = TRUE;
5633 
5634     i = do_search(cap->oap, dir, pat, cap->count1,
5635 				 opt | SEARCH_OPT | SEARCH_ECHO | SEARCH_MSG);
5636     if (i == 0)
5637 	clearop(cap->oap);
5638     else
5639     {
5640 	if (i == 2)
5641 	    cap->oap->motion_type = MLINE;
5642 #ifdef FEAT_VIRTUALEDIT
5643 	curwin->w_cursor.coladd = 0;
5644 #endif
5645 #ifdef FEAT_FOLDING
5646 	if (cap->oap->op_type == OP_NOP && (fdo_flags & FDO_SEARCH) && KeyTyped)
5647 	    foldOpenCursor();
5648 #endif
5649     }
5650 
5651     /* "/$" will put the cursor after the end of the line, may need to
5652      * correct that here */
5653     check_cursor();
5654 }
5655 
5656 /*
5657  * Character search commands.
5658  * cap->arg is BACKWARD for 'F' and 'T', FORWARD for 'f' and 't', TRUE for
5659  * ',' and FALSE for ';'.
5660  * cap->nchar is NUL for ',' and ';' (repeat the search)
5661  */
5662     static void
5663 nv_csearch(cap)
5664     cmdarg_T	*cap;
5665 {
5666     int		t_cmd;
5667 
5668     if (cap->cmdchar == 't' || cap->cmdchar == 'T')
5669 	t_cmd = TRUE;
5670     else
5671 	t_cmd = FALSE;
5672 
5673     cap->oap->motion_type = MCHAR;
5674     if (cap->arg == BACKWARD)
5675 	cap->oap->inclusive = FALSE;
5676     else
5677 	cap->oap->inclusive = TRUE;
5678     if (IS_SPECIAL(cap->nchar) || searchc(cap, t_cmd) == FAIL)
5679 	clearopbeep(cap->oap);
5680     else
5681     {
5682 	curwin->w_set_curswant = TRUE;
5683 #ifdef FEAT_VIRTUALEDIT
5684 	/* Include a Tab for "tx" and for "dfx". */
5685 	if (gchar_cursor() == TAB && virtual_active() && cap->arg == FORWARD
5686 		&& (t_cmd || cap->oap->op_type != OP_NOP))
5687 	{
5688 	    colnr_T	scol, ecol;
5689 
5690 	    getvcol(curwin, &curwin->w_cursor, &scol, NULL, &ecol);
5691 	    curwin->w_cursor.coladd = ecol - scol;
5692 	}
5693 	else
5694 	    curwin->w_cursor.coladd = 0;
5695 #endif
5696 #ifdef FEAT_VISUAL
5697 	adjust_for_sel(cap);
5698 #endif
5699 #ifdef FEAT_FOLDING
5700 	if ((fdo_flags & FDO_HOR) && KeyTyped && cap->oap->op_type == OP_NOP)
5701 	    foldOpenCursor();
5702 #endif
5703     }
5704 }
5705 
5706 /*
5707  * "[" and "]" commands.
5708  * cap->arg is BACKWARD for "[" and FORWARD for "]".
5709  */
5710     static void
5711 nv_brackets(cap)
5712     cmdarg_T	*cap;
5713 {
5714     pos_T	new_pos;
5715     pos_T	prev_pos;
5716     pos_T	*pos = NULL;	    /* init for GCC */
5717     pos_T	old_pos;	    /* cursor position before command */
5718     int		flag;
5719     long	n;
5720     int		findc;
5721     int		c;
5722 
5723     cap->oap->motion_type = MCHAR;
5724     cap->oap->inclusive = FALSE;
5725     old_pos = curwin->w_cursor;
5726 #ifdef FEAT_VIRTUALEDIT
5727     curwin->w_cursor.coladd = 0;	    /* TODO: don't do this for an error. */
5728 #endif
5729 
5730 #ifdef FEAT_SEARCHPATH
5731     /*
5732      * "[f" or "]f" : Edit file under the cursor (same as "gf")
5733      */
5734     if (cap->nchar == 'f')
5735 	nv_gotofile(cap);
5736     else
5737 #endif
5738 
5739 #ifdef FEAT_FIND_ID
5740     /*
5741      * Find the occurence(s) of the identifier or define under cursor
5742      * in current and included files or jump to the first occurence.
5743      *
5744      *			search	     list	    jump
5745      *		      fwd   bwd    fwd	 bwd	 fwd	bwd
5746      * identifier     "]i"  "[i"   "]I"  "[I"	"]^I"  "[^I"
5747      * define	      "]d"  "[d"   "]D"  "[D"	"]^D"  "[^D"
5748      */
5749     if (vim_strchr((char_u *)
5750 #ifdef EBCDIC
5751 		"iI\005dD\067",
5752 #else
5753 		"iI\011dD\004",
5754 #endif
5755 		cap->nchar) != NULL)
5756     {
5757 	char_u	*ptr;
5758 	int	len;
5759 
5760 	if ((len = find_ident_under_cursor(&ptr, FIND_IDENT)) == 0)
5761 	    clearop(cap->oap);
5762 	else
5763 	{
5764 	    find_pattern_in_path(ptr, 0, len, TRUE,
5765 		cap->count0 == 0 ? !isupper(cap->nchar) : FALSE,
5766 		((cap->nchar & 0xf) == ('d' & 0xf)) ?  FIND_DEFINE : FIND_ANY,
5767 		cap->count1,
5768 		isupper(cap->nchar) ? ACTION_SHOW_ALL :
5769 			    islower(cap->nchar) ? ACTION_SHOW : ACTION_GOTO,
5770 		cap->cmdchar == ']' ? curwin->w_cursor.lnum + 1 : (linenr_T)1,
5771 		(linenr_T)MAXLNUM);
5772 	    curwin->w_set_curswant = TRUE;
5773 	}
5774     }
5775     else
5776 #endif
5777 
5778     /*
5779      * "[{", "[(", "]}" or "])": go to Nth unclosed '{', '(', '}' or ')'
5780      * "[#", "]#": go to start/end of Nth innermost #if..#endif construct.
5781      * "[/", "[*", "]/", "]*": go to Nth comment start/end.
5782      * "[m" or "]m" search for prev/next start of (Java) method.
5783      * "[M" or "]M" search for prev/next end of (Java) method.
5784      */
5785     if (  (cap->cmdchar == '['
5786 		&& vim_strchr((char_u *)"{(*/#mM", cap->nchar) != NULL)
5787 	    || (cap->cmdchar == ']'
5788 		&& vim_strchr((char_u *)"})*/#mM", cap->nchar) != NULL))
5789     {
5790 	if (cap->nchar == '*')
5791 	    cap->nchar = '/';
5792 	new_pos.lnum = 0;
5793 	prev_pos.lnum = 0;
5794 	if (cap->nchar == 'm' || cap->nchar == 'M')
5795 	{
5796 	    if (cap->cmdchar == '[')
5797 		findc = '{';
5798 	    else
5799 		findc = '}';
5800 	    n = 9999;
5801 	}
5802 	else
5803 	{
5804 	    findc = cap->nchar;
5805 	    n = cap->count1;
5806 	}
5807 	for ( ; n > 0; --n)
5808 	{
5809 	    if ((pos = findmatchlimit(cap->oap, findc,
5810 		(cap->cmdchar == '[') ? FM_BACKWARD : FM_FORWARD, 0)) == NULL)
5811 	    {
5812 		if (new_pos.lnum == 0)	/* nothing found */
5813 		{
5814 		    if (cap->nchar != 'm' && cap->nchar != 'M')
5815 			clearopbeep(cap->oap);
5816 		}
5817 		else
5818 		    pos = &new_pos;	/* use last one found */
5819 		break;
5820 	    }
5821 	    prev_pos = new_pos;
5822 	    curwin->w_cursor = *pos;
5823 	    new_pos = *pos;
5824 	}
5825 	curwin->w_cursor = old_pos;
5826 
5827 	/*
5828 	 * Handle "[m", "]m", "[M" and "[M".  The findmatchlimit() only
5829 	 * brought us to the match for "[m" and "]M" when inside a method.
5830 	 * Try finding the '{' or '}' we want to be at.
5831 	 * Also repeat for the given count.
5832 	 */
5833 	if (cap->nchar == 'm' || cap->nchar == 'M')
5834 	{
5835 	    /* norm is TRUE for "]M" and "[m" */
5836 	    int	    norm = ((findc == '{') == (cap->nchar == 'm'));
5837 
5838 	    n = cap->count1;
5839 	    /* found a match: we were inside a method */
5840 	    if (prev_pos.lnum != 0)
5841 	    {
5842 		pos = &prev_pos;
5843 		curwin->w_cursor = prev_pos;
5844 		if (norm)
5845 		    --n;
5846 	    }
5847 	    else
5848 		pos = NULL;
5849 	    while (n > 0)
5850 	    {
5851 		for (;;)
5852 		{
5853 		    if ((findc == '{' ? dec_cursor() : inc_cursor()) < 0)
5854 		    {
5855 			/* if not found anything, that's an error */
5856 			if (pos == NULL)
5857 			    clearopbeep(cap->oap);
5858 			n = 0;
5859 			break;
5860 		    }
5861 		    c = gchar_cursor();
5862 		    if (c == '{' || c == '}')
5863 		    {
5864 			/* Must have found end/start of class: use it.
5865 			 * Or found the place to be at. */
5866 			if ((c == findc && norm) || (n == 1 && !norm))
5867 			{
5868 			    new_pos = curwin->w_cursor;
5869 			    pos = &new_pos;
5870 			    n = 0;
5871 			}
5872 			/* if no match found at all, we started outside of the
5873 			 * class and we're inside now.  Just go on. */
5874 			else if (new_pos.lnum == 0)
5875 			{
5876 			    new_pos = curwin->w_cursor;
5877 			    pos = &new_pos;
5878 			}
5879 			/* found start/end of other method: go to match */
5880 			else if ((pos = findmatchlimit(cap->oap, findc,
5881 			    (cap->cmdchar == '[') ? FM_BACKWARD : FM_FORWARD,
5882 								  0)) == NULL)
5883 			    n = 0;
5884 			else
5885 			    curwin->w_cursor = *pos;
5886 			break;
5887 		    }
5888 		}
5889 		--n;
5890 	    }
5891 	    curwin->w_cursor = old_pos;
5892 	    if (pos == NULL && new_pos.lnum != 0)
5893 		clearopbeep(cap->oap);
5894 	}
5895 	if (pos != NULL)
5896 	{
5897 	    setpcmark();
5898 	    curwin->w_cursor = *pos;
5899 	    curwin->w_set_curswant = TRUE;
5900 #ifdef FEAT_FOLDING
5901 	    if ((fdo_flags & FDO_BLOCK) && KeyTyped
5902 					       && cap->oap->op_type == OP_NOP)
5903 		foldOpenCursor();
5904 #endif
5905 	}
5906     }
5907 
5908     /*
5909      * "[[", "[]", "]]" and "][": move to start or end of function
5910      */
5911     else if (cap->nchar == '[' || cap->nchar == ']')
5912     {
5913 	if (cap->nchar == cap->cmdchar)		    /* "]]" or "[[" */
5914 	    flag = '{';
5915 	else
5916 	    flag = '}';		    /* "][" or "[]" */
5917 
5918 	curwin->w_set_curswant = TRUE;
5919 	/*
5920 	 * Imitate strange Vi behaviour: When using "]]" with an operator
5921 	 * we also stop at '}'.
5922 	 */
5923 	if (!findpar(cap->oap, cap->arg, cap->count1, flag,
5924 	      (cap->oap->op_type != OP_NOP
5925 				      && cap->arg == FORWARD && flag == '{')))
5926 	    clearopbeep(cap->oap);
5927 	else
5928 	{
5929 	    if (cap->oap->op_type == OP_NOP)
5930 		beginline(BL_WHITE | BL_FIX);
5931 #ifdef FEAT_FOLDING
5932 	    if ((fdo_flags & FDO_BLOCK) && KeyTyped && cap->oap->op_type == OP_NOP)
5933 		foldOpenCursor();
5934 #endif
5935 	}
5936     }
5937 
5938     /*
5939      * "[p", "[P", "]P" and "]p": put with indent adjustment
5940      */
5941     else if (cap->nchar == 'p' || cap->nchar == 'P')
5942     {
5943 	if (!checkclearopq(cap->oap))
5944 	{
5945 	    prep_redo_cmd(cap);
5946 	    do_put(cap->oap->regname,
5947 	      (cap->cmdchar == ']' && cap->nchar == 'p') ? FORWARD : BACKWARD,
5948 						  cap->count1, PUT_FIXINDENT);
5949 	}
5950     }
5951 
5952     /*
5953      * "['", "[`", "]'" and "]`": jump to next mark
5954      */
5955     else if (cap->nchar == '\'' || cap->nchar == '`')
5956     {
5957 	pos = &curwin->w_cursor;
5958 	for (n = cap->count1; n > 0; --n)
5959 	{
5960 	    prev_pos = *pos;
5961 	    pos = getnextmark(pos, cap->cmdchar == '[' ? BACKWARD : FORWARD,
5962 							  cap->nchar == '\'');
5963 	    if (pos == NULL)
5964 		break;
5965 	}
5966 	if (pos == NULL)
5967 	    pos = &prev_pos;
5968 	nv_cursormark(cap, cap->nchar == '\'', pos);
5969     }
5970 
5971 #ifdef FEAT_MOUSE
5972     /*
5973      * [ or ] followed by a middle mouse click: put selected text with
5974      * indent adjustment.  Any other button just does as usual.
5975      */
5976     else if (cap->nchar >= K_LEFTMOUSE && cap->nchar <= K_RIGHTRELEASE)
5977     {
5978 	(void)do_mouse(cap->oap, cap->nchar,
5979 		       (cap->cmdchar == ']') ? FORWARD : BACKWARD,
5980 		       cap->count1, PUT_FIXINDENT);
5981     }
5982 #endif /* FEAT_MOUSE */
5983 
5984 #ifdef FEAT_FOLDING
5985     /*
5986      * "[z" and "]z": move to start or end of open fold.
5987      */
5988     else if (cap->nchar == 'z')
5989     {
5990 	if (foldMoveTo(FALSE, cap->cmdchar == ']' ? FORWARD : BACKWARD,
5991 							 cap->count1) == FAIL)
5992 	    clearopbeep(cap->oap);
5993     }
5994 #endif
5995 
5996 #ifdef FEAT_DIFF
5997     /*
5998      * "[c" and "]c": move to next or previous diff-change.
5999      */
6000     else if (cap->nchar == 'c')
6001     {
6002 	if (diff_move_to(cap->cmdchar == ']' ? FORWARD : BACKWARD,
6003 							 cap->count1) == FAIL)
6004 	    clearopbeep(cap->oap);
6005     }
6006 #endif
6007 
6008     /* Not a valid cap->nchar. */
6009     else
6010 	clearopbeep(cap->oap);
6011 }
6012 
6013 /*
6014  * Handle Normal mode "%" command.
6015  */
6016     static void
6017 nv_percent(cap)
6018     cmdarg_T	*cap;
6019 {
6020     pos_T	*pos;
6021 #ifdef FEAT_FOLDING
6022     linenr_T	lnum = curwin->w_cursor.lnum;
6023 #endif
6024 
6025     cap->oap->inclusive = TRUE;
6026     if (cap->count0)	    /* {cnt}% : goto {cnt} percentage in file */
6027     {
6028 	if (cap->count0 > 100)
6029 	    clearopbeep(cap->oap);
6030 	else
6031 	{
6032 	    cap->oap->motion_type = MLINE;
6033 	    setpcmark();
6034 	    /* Round up, so CTRL-G will give same value.  Watch out for a
6035 	     * large line count, the line number must not go negative! */
6036 	    if (curbuf->b_ml.ml_line_count > 1000000)
6037 		curwin->w_cursor.lnum = (curbuf->b_ml.ml_line_count + 99L)
6038 							 / 100L * cap->count0;
6039 	    else
6040 		curwin->w_cursor.lnum = (curbuf->b_ml.ml_line_count *
6041 						    cap->count0 + 99L) / 100L;
6042 	    if (curwin->w_cursor.lnum > curbuf->b_ml.ml_line_count)
6043 		curwin->w_cursor.lnum = curbuf->b_ml.ml_line_count;
6044 	    beginline(BL_SOL | BL_FIX);
6045 	}
6046     }
6047     else		    /* "%" : go to matching paren */
6048     {
6049 	cap->oap->motion_type = MCHAR;
6050 	cap->oap->use_reg_one = TRUE;
6051 	if ((pos = findmatch(cap->oap, NUL)) == NULL)
6052 	    clearopbeep(cap->oap);
6053 	else
6054 	{
6055 	    setpcmark();
6056 	    curwin->w_cursor = *pos;
6057 	    curwin->w_set_curswant = TRUE;
6058 #ifdef FEAT_VIRTUALEDIT
6059 	    curwin->w_cursor.coladd = 0;
6060 #endif
6061 #ifdef FEAT_VISUAL
6062 	    adjust_for_sel(cap);
6063 #endif
6064 	}
6065     }
6066 #ifdef FEAT_FOLDING
6067     if (cap->oap->op_type == OP_NOP
6068 	    && lnum != curwin->w_cursor.lnum
6069 	    && (fdo_flags & FDO_PERCENT)
6070 	    && KeyTyped)
6071 	foldOpenCursor();
6072 #endif
6073 }
6074 
6075 /*
6076  * Handle "(" and ")" commands.
6077  * cap->arg is BACKWARD for "(" and FORWARD for ")".
6078  */
6079     static void
6080 nv_brace(cap)
6081     cmdarg_T	*cap;
6082 {
6083     cap->oap->motion_type = MCHAR;
6084     cap->oap->use_reg_one = TRUE;
6085     if (cap->cmdchar == ')')
6086 	cap->oap->inclusive = FALSE;
6087     else
6088 	cap->oap->inclusive = TRUE;
6089     curwin->w_set_curswant = TRUE;
6090 
6091     if (findsent(cap->arg, cap->count1) == FAIL)
6092 	clearopbeep(cap->oap);
6093     else
6094     {
6095 #ifdef FEAT_VIRTUALEDIT
6096 	curwin->w_cursor.coladd = 0;
6097 #endif
6098 #ifdef FEAT_FOLDING
6099 	if ((fdo_flags & FDO_BLOCK) && KeyTyped && cap->oap->op_type == OP_NOP)
6100 	    foldOpenCursor();
6101 #endif
6102     }
6103 }
6104 
6105 /*
6106  * "m" command: Mark a position.
6107  */
6108     static void
6109 nv_mark(cap)
6110     cmdarg_T	*cap;
6111 {
6112     if (!checkclearop(cap->oap))
6113     {
6114 	if (setmark(cap->nchar) == FAIL)
6115 	    clearopbeep(cap->oap);
6116     }
6117 }
6118 
6119 /*
6120  * "{" and "}" commands.
6121  * cmd->arg is BACKWARD for "{" and FORWARD for "}".
6122  */
6123     static void
6124 nv_findpar(cap)
6125     cmdarg_T	*cap;
6126 {
6127     cap->oap->motion_type = MCHAR;
6128     cap->oap->inclusive = FALSE;
6129     cap->oap->use_reg_one = TRUE;
6130     curwin->w_set_curswant = TRUE;
6131     if (!findpar(cap->oap, cap->arg, cap->count1, NUL, FALSE))
6132 	clearopbeep(cap->oap);
6133     else
6134     {
6135 #ifdef FEAT_VIRTUALEDIT
6136 	curwin->w_cursor.coladd = 0;
6137 #endif
6138 #ifdef FEAT_FOLDING
6139 	if ((fdo_flags & FDO_BLOCK) && KeyTyped && cap->oap->op_type == OP_NOP)
6140 	    foldOpenCursor();
6141 #endif
6142     }
6143 }
6144 
6145 /*
6146  * "u" command: Undo or make lower case.
6147  */
6148     static void
6149 nv_undo(cap)
6150     cmdarg_T	*cap;
6151 {
6152     if (cap->oap->op_type == OP_LOWER
6153 #ifdef FEAT_VISUAL
6154 	    || VIsual_active
6155 #endif
6156 	    )
6157     {
6158 	/* translate "<Visual>u" to "<Visual>gu" and "guu" to "gugu" */
6159 	cap->cmdchar = 'g';
6160 	cap->nchar = 'u';
6161 	nv_operator(cap);
6162     }
6163     else
6164 	nv_kundo(cap);
6165 }
6166 
6167 /*
6168  * <Undo> command.
6169  */
6170     static void
6171 nv_kundo(cap)
6172     cmdarg_T	*cap;
6173 {
6174     if (!checkclearopq(cap->oap))
6175     {
6176 	u_undo((int)cap->count1);
6177 	curwin->w_set_curswant = TRUE;
6178     }
6179 }
6180 
6181 /*
6182  * Handle the "r" command.
6183  */
6184     static void
6185 nv_replace(cap)
6186     cmdarg_T	*cap;
6187 {
6188     char_u	*ptr;
6189     int		had_ctrl_v;
6190     long	n;
6191 
6192     if (checkclearop(cap->oap))
6193 	return;
6194 
6195     /* get another character */
6196     if (cap->nchar == Ctrl_V)
6197     {
6198 	had_ctrl_v = Ctrl_V;
6199 	cap->nchar = get_literal();
6200 	/* Don't redo a multibyte character with CTRL-V. */
6201 	if (cap->nchar > DEL)
6202 	    had_ctrl_v = NUL;
6203     }
6204     else
6205 	had_ctrl_v = NUL;
6206 
6207 #ifdef FEAT_VISUAL
6208     /* Visual mode "r" */
6209     if (VIsual_active)
6210     {
6211 	nv_operator(cap);
6212 	return;
6213     }
6214 #endif
6215 
6216 #ifdef FEAT_VIRTUALEDIT
6217     /* Break tabs, etc. */
6218     if (virtual_active())
6219     {
6220 	if (u_save_cursor() == FAIL)
6221 	    return;
6222 	if (gchar_cursor() == NUL)
6223 	{
6224 	    /* Add extra space and put the cursor on the first one. */
6225 	    coladvance_force((colnr_T)(getviscol() + cap->count1));
6226 	    curwin->w_cursor.col -= cap->count1;
6227 	}
6228 	else if (gchar_cursor() == TAB)
6229 	    coladvance_force(getviscol());
6230     }
6231 #endif
6232 
6233     /*
6234      * Check for a special key or not enough characters to replace.
6235      */
6236     ptr = ml_get_cursor();
6237     if (IS_SPECIAL(cap->nchar) || STRLEN(ptr) < (unsigned)cap->count1
6238 #ifdef FEAT_MBYTE
6239 	    || (has_mbyte && mb_charlen(ptr) < cap->count1)
6240 #endif
6241 	    )
6242     {
6243 	clearopbeep(cap->oap);
6244 	return;
6245     }
6246 
6247     /*
6248      * Replacing with a TAB is done by edit() when it is complicated because
6249      * 'expandtab' or 'smarttab' is set.  CTRL-V TAB inserts a literal TAB.
6250      * Other characters are done below to avoid problems with things like
6251      * CTRL-V 048 (for edit() this would be R CTRL-V 0 ESC).
6252      */
6253     if (had_ctrl_v != Ctrl_V && cap->nchar == '\t' && (curbuf->b_p_et || p_sta))
6254     {
6255 	stuffnumReadbuff(cap->count1);
6256 	stuffcharReadbuff('R');
6257 	stuffcharReadbuff('\t');
6258 	stuffcharReadbuff(ESC);
6259 	return;
6260     }
6261 
6262     /* save line for undo */
6263     if (u_save_cursor() == FAIL)
6264 	return;
6265 
6266     if (had_ctrl_v != Ctrl_V && (cap->nchar == '\r' || cap->nchar == '\n'))
6267     {
6268 	/*
6269 	 * Replace character(s) by a single newline.
6270 	 * Strange vi behaviour: Only one newline is inserted.
6271 	 * Delete the characters here.
6272 	 * Insert the newline with an insert command, takes care of
6273 	 * autoindent.	The insert command depends on being on the last
6274 	 * character of a line or not.
6275 	 */
6276 #ifdef FEAT_MBYTE
6277 	(void)del_chars(cap->count1, FALSE);	/* delete the characters */
6278 #else
6279 	(void)del_bytes(cap->count1, FALSE);	/* delete the characters */
6280 #endif
6281 	stuffcharReadbuff('\r');
6282 	stuffcharReadbuff(ESC);
6283 
6284 	/* Give 'r' to edit(), to get the redo command right. */
6285 	invoke_edit(cap, TRUE, 'r', FALSE);
6286     }
6287     else
6288     {
6289 	prep_redo(cap->oap->regname, cap->count1,
6290 				       NUL, 'r', NUL, had_ctrl_v, cap->nchar);
6291 
6292 	curbuf->b_op_start = curwin->w_cursor;
6293 #ifdef FEAT_MBYTE
6294 	if (has_mbyte)
6295 	{
6296 	    int		old_State = State;
6297 
6298 	    if (cap->ncharC1 != 0)
6299 		AppendCharToRedobuff(cap->ncharC1);
6300 	    if (cap->ncharC2 != 0)
6301 		AppendCharToRedobuff(cap->ncharC2);
6302 
6303 	    /* This is slow, but it handles replacing a single-byte with a
6304 	     * multi-byte and the other way around.  Also handles adding
6305 	     * composing characters for utf-8. */
6306 	    for (n = cap->count1; n > 0; --n)
6307 	    {
6308 		State = REPLACE;
6309 		ins_char(cap->nchar);
6310 		State = old_State;
6311 		if (cap->ncharC1 != 0)
6312 		    ins_char(cap->ncharC1);
6313 		if (cap->ncharC2 != 0)
6314 		    ins_char(cap->ncharC2);
6315 	    }
6316 	}
6317 	else
6318 #endif
6319 	{
6320 	    /*
6321 	     * Replace the characters within one line.
6322 	     */
6323 	    for (n = cap->count1; n > 0; --n)
6324 	    {
6325 		/*
6326 		 * Get ptr again, because u_save and/or showmatch() will have
6327 		 * released the line.  At the same time we let know that the
6328 		 * line will be changed.
6329 		 */
6330 		ptr = ml_get_buf(curbuf, curwin->w_cursor.lnum, TRUE);
6331 		ptr[curwin->w_cursor.col] = cap->nchar;
6332 		if (p_sm && msg_silent == 0)
6333 		    showmatch(cap->nchar);
6334 		++curwin->w_cursor.col;
6335 	    }
6336 #ifdef FEAT_NETBEANS_INTG
6337 	    if (usingNetbeans)
6338 	    {
6339 		colnr_T start = (colnr_T)(curwin->w_cursor.col - cap->count1);
6340 
6341 		netbeans_inserted(curbuf, curwin->w_cursor.lnum, start,
6342 			     (int)cap->count1, &ptr[start], (int)cap->count1);
6343 	    }
6344 #endif
6345 
6346 	    /* mark the buffer as changed and prepare for displaying */
6347 	    changed_bytes(curwin->w_cursor.lnum,
6348 			       (colnr_T)(curwin->w_cursor.col - cap->count1));
6349 	}
6350 	--curwin->w_cursor.col;	    /* cursor on the last replaced char */
6351 #ifdef FEAT_MBYTE
6352 	/* if the character on the left of the current cursor is a multi-byte
6353 	 * character, move two characters left */
6354 	if (has_mbyte)
6355 	    mb_adjust_cursor();
6356 #endif
6357 	curbuf->b_op_end = curwin->w_cursor;
6358 	curwin->w_set_curswant = TRUE;
6359 	set_last_insert(cap->nchar);
6360     }
6361 }
6362 
6363 #ifdef FEAT_VISUAL
6364 /*
6365  * 'o': Exchange start and end of Visual area.
6366  * 'O': same, but in block mode exchange left and right corners.
6367  */
6368     static void
6369 v_swap_corners(cmdchar)
6370     int		cmdchar;
6371 {
6372     pos_T	old_cursor;
6373     colnr_T	left, right;
6374 
6375     if (cmdchar == 'O' && VIsual_mode == Ctrl_V)
6376     {
6377 	old_cursor = curwin->w_cursor;
6378 	getvcols(curwin, &old_cursor, &VIsual, &left, &right);
6379 	curwin->w_cursor.lnum = VIsual.lnum;
6380 	coladvance(left);
6381 	VIsual = curwin->w_cursor;
6382 
6383 	curwin->w_cursor.lnum = old_cursor.lnum;
6384 	curwin->w_curswant = right;
6385 	/* 'selection "exclusive" and cursor at right-bottom corner: move it
6386 	 * right one column */
6387 	if (old_cursor.lnum >= VIsual.lnum && *p_sel == 'e')
6388 	    ++curwin->w_curswant;
6389 	coladvance(curwin->w_curswant);
6390 	if (curwin->w_cursor.col == old_cursor.col
6391 #ifdef FEAT_VIRTUALEDIT
6392 		&& (!virtual_active()
6393 		    || curwin->w_cursor.coladd == old_cursor.coladd)
6394 #endif
6395 		)
6396 	{
6397 	    curwin->w_cursor.lnum = VIsual.lnum;
6398 	    if (old_cursor.lnum <= VIsual.lnum && *p_sel == 'e')
6399 		++right;
6400 	    coladvance(right);
6401 	    VIsual = curwin->w_cursor;
6402 
6403 	    curwin->w_cursor.lnum = old_cursor.lnum;
6404 	    coladvance(left);
6405 	    curwin->w_curswant = left;
6406 	}
6407     }
6408     else
6409     {
6410 	old_cursor = curwin->w_cursor;
6411 	curwin->w_cursor = VIsual;
6412 	VIsual = old_cursor;
6413 	curwin->w_set_curswant = TRUE;
6414     }
6415 }
6416 #endif /* FEAT_VISUAL */
6417 
6418 /*
6419  * "R" (cap->arg is FALSE) and "gR" (cap->arg is TRUE).
6420  */
6421     static void
6422 nv_Replace(cap)
6423     cmdarg_T	    *cap;
6424 {
6425 #ifdef FEAT_VISUAL
6426     if (VIsual_active)		/* "R" is replace lines */
6427     {
6428 	cap->cmdchar = 'c';
6429 	cap->nchar = NUL;
6430 	VIsual_mode = 'V';
6431 	nv_operator(cap);
6432     }
6433     else
6434 #endif
6435 	if (!checkclearopq(cap->oap))
6436     {
6437 	if (!curbuf->b_p_ma)
6438 	    EMSG(_(e_modifiable));
6439 	else
6440 	{
6441 #ifdef FEAT_VIRTUALEDIT
6442 	    if (virtual_active())
6443 		coladvance(getviscol());
6444 #endif
6445 	    invoke_edit(cap, FALSE, cap->arg ? 'V' : 'R', FALSE);
6446 	}
6447     }
6448 }
6449 
6450 #ifdef FEAT_VREPLACE
6451 /*
6452  * "gr".
6453  */
6454     static void
6455 nv_vreplace(cap)
6456     cmdarg_T	*cap;
6457 {
6458 # ifdef FEAT_VISUAL
6459     if (VIsual_active)
6460     {
6461 	cap->cmdchar = 'r';
6462 	cap->nchar = cap->extra_char;
6463 	nv_replace(cap);	/* Do same as "r" in Visual mode for now */
6464     }
6465     else
6466 # endif
6467 	if (!checkclearopq(cap->oap))
6468     {
6469 	if (!curbuf->b_p_ma)
6470 	    EMSG(_(e_modifiable));
6471 	else
6472 	{
6473 	    if (cap->extra_char == Ctrl_V)	/* get another character */
6474 		cap->extra_char = get_literal();
6475 	    stuffcharReadbuff(cap->extra_char);
6476 	    stuffcharReadbuff(ESC);
6477 # ifdef FEAT_VIRTUALEDIT
6478 	    if (virtual_active())
6479 		coladvance(getviscol());
6480 # endif
6481 	    invoke_edit(cap, TRUE, 'v', FALSE);
6482 	}
6483     }
6484 }
6485 #endif
6486 
6487 /*
6488  * Swap case for "~" command, when it does not work like an operator.
6489  */
6490     static void
6491 n_swapchar(cap)
6492     cmdarg_T	*cap;
6493 {
6494     long	n;
6495     pos_T	startpos;
6496     int		did_change = 0;
6497 #ifdef FEAT_NETBEANS_INTG
6498     pos_T	pos;
6499     char_u	*ptr;
6500     int		count;
6501 #endif
6502 
6503     if (checkclearopq(cap->oap))
6504 	return;
6505 
6506     if (lineempty(curwin->w_cursor.lnum) && vim_strchr(p_ww, '~') == NULL)
6507     {
6508 	clearopbeep(cap->oap);
6509 	return;
6510     }
6511 
6512     prep_redo_cmd(cap);
6513 
6514     if (u_save_cursor() == FAIL)
6515 	return;
6516 
6517     startpos = curwin->w_cursor;
6518 #ifdef FEAT_NETBEANS_INTG
6519     pos = startpos;
6520 #endif
6521     for (n = cap->count1; n > 0; --n)
6522     {
6523 	did_change |= swapchar(cap->oap->op_type, &curwin->w_cursor);
6524 	inc_cursor();
6525 	if (gchar_cursor() == NUL)
6526 	{
6527 	    if (vim_strchr(p_ww, '~') != NULL
6528 		    && curwin->w_cursor.lnum < curbuf->b_ml.ml_line_count)
6529 	    {
6530 #ifdef FEAT_NETBEANS_INTG
6531 		if (usingNetbeans)
6532 		{
6533 		    if (did_change)
6534 		    {
6535 			ptr = ml_get(pos.lnum);
6536 			count = STRLEN(ptr) - pos.col;
6537 			netbeans_inserted(curbuf, pos.lnum, pos.col,
6538 						 count, &ptr[pos.col], count);
6539 		    }
6540 		    pos.col = 0;
6541 		    pos.lnum++;
6542 		}
6543 #endif
6544 		++curwin->w_cursor.lnum;
6545 		curwin->w_cursor.col = 0;
6546 		if (n > 1)
6547 		{
6548 		    if (u_savesub(curwin->w_cursor.lnum) == FAIL)
6549 			break;
6550 		    u_clearline();
6551 		}
6552 	    }
6553 	    else
6554 		break;
6555 	}
6556     }
6557 #ifdef FEAT_NETBEANS_INTG
6558     if (did_change && usingNetbeans)
6559     {
6560 	ptr = ml_get(pos.lnum);
6561 	count = curwin->w_cursor.col - pos.col;
6562 	netbeans_inserted(curbuf, pos.lnum, pos.col,
6563 						 count, &ptr[pos.col], count);
6564     }
6565 #endif
6566 
6567 
6568     check_cursor();
6569     curwin->w_set_curswant = TRUE;
6570     if (did_change)
6571     {
6572 	changed_lines(startpos.lnum, startpos.col, curwin->w_cursor.lnum + 1,
6573 									  0L);
6574 	curbuf->b_op_start = startpos;
6575 	curbuf->b_op_end = curwin->w_cursor;
6576 	if (curbuf->b_op_end.col > 0)
6577 	    --curbuf->b_op_end.col;
6578     }
6579 }
6580 
6581 /*
6582  * Move cursor to mark.
6583  */
6584     static void
6585 nv_cursormark(cap, flag, pos)
6586     cmdarg_T	*cap;
6587     int		flag;
6588     pos_T	*pos;
6589 {
6590     if (check_mark(pos) == FAIL)
6591 	clearop(cap->oap);
6592     else
6593     {
6594 	if (cap->cmdchar == '\''
6595 		|| cap->cmdchar == '`'
6596 		|| cap->cmdchar == '['
6597 		|| cap->cmdchar == ']')
6598 	    setpcmark();
6599 	curwin->w_cursor = *pos;
6600 	if (flag)
6601 	    beginline(BL_WHITE | BL_FIX);
6602 	else
6603 	    check_cursor();
6604     }
6605     cap->oap->motion_type = flag ? MLINE : MCHAR;
6606     if (cap->cmdchar == '`')
6607 	cap->oap->use_reg_one = TRUE;
6608     cap->oap->inclusive = FALSE;		/* ignored if not MCHAR */
6609     curwin->w_set_curswant = TRUE;
6610 }
6611 
6612 #ifdef FEAT_VISUAL
6613 /*
6614  * Handle commands that are operators in Visual mode.
6615  */
6616     static void
6617 v_visop(cap)
6618     cmdarg_T	*cap;
6619 {
6620     static char_u trans[] = "YyDdCcxdXdAAIIrr";
6621 
6622     /* Uppercase means linewise, except in block mode, then "D" deletes till
6623      * the end of the line, and "C" replaces til EOL */
6624     if (isupper(cap->cmdchar))
6625     {
6626 	if (VIsual_mode != Ctrl_V)
6627 	    VIsual_mode = 'V';
6628 	else if (cap->cmdchar == 'C' || cap->cmdchar == 'D')
6629 	    curwin->w_curswant = MAXCOL;
6630     }
6631     cap->cmdchar = *(vim_strchr(trans, cap->cmdchar) + 1);
6632     nv_operator(cap);
6633 }
6634 #endif
6635 
6636 /*
6637  * "s" and "S" commands.
6638  */
6639     static void
6640 nv_subst(cap)
6641     cmdarg_T	*cap;
6642 {
6643 #ifdef FEAT_VISUAL
6644     if (VIsual_active)	/* "vs" and "vS" are the same as "vc" */
6645     {
6646 	if (cap->cmdchar == 'S')
6647 	    VIsual_mode = 'V';
6648 	cap->cmdchar = 'c';
6649 	nv_operator(cap);
6650     }
6651     else
6652 #endif
6653 	nv_optrans(cap);
6654 }
6655 
6656 /*
6657  * Abbreviated commands.
6658  */
6659     static void
6660 nv_abbrev(cap)
6661     cmdarg_T	*cap;
6662 {
6663     if (cap->cmdchar == K_DEL || cap->cmdchar == K_KDEL)
6664 	cap->cmdchar = 'x';		/* DEL key behaves like 'x' */
6665 
6666 #ifdef FEAT_VISUAL
6667     /* in Visual mode these commands are operators */
6668     if (VIsual_active)
6669 	v_visop(cap);
6670     else
6671 #endif
6672 	nv_optrans(cap);
6673 }
6674 
6675 /*
6676  * Translate a command into another command.
6677  */
6678     static void
6679 nv_optrans(cap)
6680     cmdarg_T	*cap;
6681 {
6682     static char_u *(ar[8]) = {(char_u *)"dl", (char_u *)"dh",
6683 			      (char_u *)"d$", (char_u *)"c$",
6684 			      (char_u *)"cl", (char_u *)"cc",
6685 			      (char_u *)"yy", (char_u *)":s\r"};
6686     static char_u *str = (char_u *)"xXDCsSY&";
6687 
6688     if (!checkclearopq(cap->oap))
6689     {
6690 	if (cap->count0)
6691 	    stuffnumReadbuff(cap->count0);
6692 	stuffReadbuff(ar[(int)(vim_strchr(str, cap->cmdchar) - str)]);
6693     }
6694     cap->opcount = 0;
6695 }
6696 
6697 /*
6698  * "'" and "`" commands.  Also for "g'" and "g`".
6699  * cap->arg is TRUE for "'" and "g'".
6700  */
6701     static void
6702 nv_gomark(cap)
6703     cmdarg_T	*cap;
6704 {
6705     pos_T	*pos;
6706     int		c;
6707 #ifdef FEAT_FOLDING
6708     linenr_T	lnum = curwin->w_cursor.lnum;
6709     int		old_KeyTyped = KeyTyped;    /* getting file may reset it */
6710 #endif
6711 
6712     if (cap->cmdchar == 'g')
6713 	c = cap->extra_char;
6714     else
6715 	c = cap->nchar;
6716     pos = getmark(c, (cap->oap->op_type == OP_NOP));
6717     if (pos == (pos_T *)-1)	    /* jumped to other file */
6718     {
6719 	if (cap->arg)
6720 	{
6721 	    check_cursor_lnum();
6722 	    beginline(BL_WHITE | BL_FIX);
6723 	}
6724 	else
6725 	    check_cursor();
6726     }
6727     else
6728 	nv_cursormark(cap, cap->arg, pos);
6729 
6730 #ifdef FEAT_VIRTUALEDIT
6731     /* May need to clear the coladd that a mark includes. */
6732     if (!virtual_active())
6733 	curwin->w_cursor.coladd = 0;
6734 #endif
6735 #ifdef FEAT_FOLDING
6736     if (cap->oap->op_type == OP_NOP
6737 	    && (pos == (pos_T *)-1 || lnum != curwin->w_cursor.lnum)
6738 	    && (fdo_flags & FDO_MARK)
6739 	    && old_KeyTyped)
6740 	foldOpenCursor();
6741 #endif
6742 }
6743 
6744 /*
6745  * Handle CTRL-O, CTRL-I, "g;" and "g," commands.
6746  */
6747     static void
6748 nv_pcmark(cap)
6749     cmdarg_T	*cap;
6750 {
6751 #ifdef FEAT_JUMPLIST
6752     pos_T	*pos;
6753 # ifdef FEAT_FOLDING
6754     linenr_T	lnum = curwin->w_cursor.lnum;
6755     int		old_KeyTyped = KeyTyped;    /* getting file may reset it */
6756 # endif
6757 
6758     if (!checkclearopq(cap->oap))
6759     {
6760 	if (cap->cmdchar == 'g')
6761 	    pos = movechangelist((int)cap->count1);
6762 	else
6763 	    pos = movemark((int)cap->count1);
6764 	if (pos == (pos_T *)-1)		/* jump to other file */
6765 	{
6766 	    curwin->w_set_curswant = TRUE;
6767 	    check_cursor();
6768 	}
6769 	else if (pos != NULL)		    /* can jump */
6770 	    nv_cursormark(cap, FALSE, pos);
6771 	else if (cap->cmdchar == 'g')
6772 	{
6773 	    if (curbuf->b_changelistlen == 0)
6774 		EMSG(_("E664: changelist is empty"));
6775 	    else if (cap->count1 < 0)
6776 		EMSG(_("E662: At start of changelist"));
6777 	    else
6778 		EMSG(_("E663: At end of changelist"));
6779 	}
6780 	else
6781 	    clearopbeep(cap->oap);
6782 # ifdef FEAT_FOLDING
6783 	if (cap->oap->op_type == OP_NOP
6784 		&& (pos == (pos_T *)-1 || lnum != curwin->w_cursor.lnum)
6785 		&& (fdo_flags & FDO_MARK)
6786 		&& old_KeyTyped)
6787 	    foldOpenCursor();
6788 # endif
6789     }
6790 #else
6791     clearopbeep(cap->oap);
6792 #endif
6793 }
6794 
6795 /*
6796  * Handle '"' command.
6797  */
6798     static void
6799 nv_regname(cap)
6800     cmdarg_T	*cap;
6801 {
6802     if (checkclearop(cap->oap))
6803 	return;
6804 #ifdef FEAT_EVAL
6805     if (cap->nchar == '=')
6806 	cap->nchar = get_expr_register();
6807 #endif
6808     if (cap->nchar != NUL && valid_yank_reg(cap->nchar, FALSE))
6809     {
6810 	cap->oap->regname = cap->nchar;
6811 	cap->opcount = cap->count0;	/* remember count before '"' */
6812 #ifdef FEAT_EVAL
6813 	set_reg_var(cap->oap->regname);
6814 #endif
6815     }
6816     else
6817 	clearopbeep(cap->oap);
6818 }
6819 
6820 #ifdef FEAT_VISUAL
6821 /*
6822  * Handle "v", "V" and "CTRL-V" commands.
6823  * Also for "gh", "gH" and "g^H" commands: Always start Select mode, cap->arg
6824  * is TRUE.
6825  */
6826     static void
6827 nv_visual(cap)
6828     cmdarg_T	*cap;
6829 {
6830     /* 'v', 'V' and CTRL-V can be used while an operator is pending to make it
6831      * characterwise, linewise, or blockwise. */
6832     if (cap->oap->op_type != OP_NOP)
6833     {
6834 	cap->oap->motion_force = cap->cmdchar;
6835 	finish_op = FALSE;	/* operator doesn't finish now but later */
6836 	return;
6837     }
6838 
6839     VIsual_select = cap->arg;
6840     if (VIsual_active)	    /* change Visual mode */
6841     {
6842 	if (VIsual_mode == cap->cmdchar)    /* stop visual mode */
6843 	    end_visual_mode();
6844 	else				    /* toggle char/block mode */
6845 	{				    /*	   or char/line mode */
6846 	    VIsual_mode = cap->cmdchar;
6847 	    showmode();
6848 	}
6849 	redraw_curbuf_later(INVERTED);	    /* update the inversion */
6850     }
6851     else		    /* start Visual mode */
6852     {
6853 	check_visual_highlight();
6854 	if (cap->count0)		    /* use previously selected part */
6855 	{
6856 	    if (resel_VIsual_mode == NUL)   /* there is none */
6857 	    {
6858 		beep_flush();
6859 		return;
6860 	    }
6861 	    VIsual = curwin->w_cursor;
6862 
6863 	    VIsual_active = TRUE;
6864 	    VIsual_reselect = TRUE;
6865 	    if (!cap->arg)
6866 		/* start Select mode when 'selectmode' contains "cmd" */
6867 		may_start_select('c');
6868 #ifdef FEAT_MOUSE
6869 	    setmouse();
6870 #endif
6871 	    if (p_smd)
6872 		redraw_cmdline = TRUE;	    /* show visual mode later */
6873 	    /*
6874 	     * For V and ^V, we multiply the number of lines even if there
6875 	     * was only one -- webb
6876 	     */
6877 	    if (resel_VIsual_mode != 'v' || resel_VIsual_line_count > 1)
6878 	    {
6879 		curwin->w_cursor.lnum +=
6880 				    resel_VIsual_line_count * cap->count0 - 1;
6881 		if (curwin->w_cursor.lnum > curbuf->b_ml.ml_line_count)
6882 		    curwin->w_cursor.lnum = curbuf->b_ml.ml_line_count;
6883 	    }
6884 	    VIsual_mode = resel_VIsual_mode;
6885 	    if (VIsual_mode == 'v')
6886 	    {
6887 		if (resel_VIsual_line_count <= 1)
6888 		    curwin->w_cursor.col += resel_VIsual_col * cap->count0 - 1;
6889 		else
6890 		    curwin->w_cursor.col = resel_VIsual_col;
6891 		check_cursor_col();
6892 	    }
6893 	    if (resel_VIsual_col == MAXCOL)
6894 	    {
6895 		curwin->w_curswant = MAXCOL;
6896 		coladvance((colnr_T)MAXCOL);
6897 	    }
6898 	    else if (VIsual_mode == Ctrl_V)
6899 	    {
6900 		validate_virtcol();
6901 		curwin->w_curswant = curwin->w_virtcol
6902 					 + resel_VIsual_col * cap->count0 - 1;
6903 		coladvance(curwin->w_curswant);
6904 	    }
6905 	    else
6906 		curwin->w_set_curswant = TRUE;
6907 	    redraw_curbuf_later(INVERTED);	/* show the inversion */
6908 	}
6909 	else
6910 	{
6911 	    if (!cap->arg)
6912 		/* start Select mode when 'selectmode' contains "cmd" */
6913 		may_start_select('c');
6914 	    n_start_visual_mode(cap->cmdchar);
6915 	}
6916     }
6917 }
6918 
6919 /*
6920  * Start selection for Shift-movement keys.
6921  */
6922     void
6923 start_selection()
6924 {
6925     /* if 'selectmode' contains "key", start Select mode */
6926     may_start_select('k');
6927     n_start_visual_mode('v');
6928 }
6929 
6930 /*
6931  * Start Select mode, if "c" is in 'selectmode' and not in a mapping or menu.
6932  */
6933     void
6934 may_start_select(c)
6935     int		c;
6936 {
6937     VIsual_select = (stuff_empty() && typebuf_typed()
6938 		    && (vim_strchr(p_slm, c) != NULL));
6939 }
6940 
6941 /*
6942  * Start Visual mode "c".
6943  * Should set VIsual_select before calling this.
6944  */
6945     static void
6946 n_start_visual_mode(c)
6947     int		c;
6948 {
6949     VIsual_mode = c;
6950     VIsual_active = TRUE;
6951     VIsual_reselect = TRUE;
6952 #ifdef FEAT_VIRTUALEDIT
6953     /* Corner case: the 0 position in a tab may change when going into
6954      * virtualedit.  Recalculate curwin->w_cursor to avoid bad hilighting.
6955      */
6956     if (c == Ctrl_V && (ve_flags & VE_BLOCK) && gchar_cursor() == TAB)
6957 	coladvance(curwin->w_virtcol);
6958 #endif
6959     VIsual = curwin->w_cursor;
6960 
6961 #ifdef FEAT_FOLDING
6962     foldAdjustVisual();
6963 #endif
6964 
6965 #ifdef FEAT_MOUSE
6966     setmouse();
6967 #endif
6968     if (p_smd)
6969 	redraw_cmdline = TRUE;	/* show visual mode later */
6970 #ifdef FEAT_CLIPBOARD
6971     /* Make sure the clipboard gets updated.  Needed because start and
6972      * end may still be the same, and the selection needs to be owned */
6973     clip_star.vmode = NUL;
6974 #endif
6975 
6976     /* Only need to redraw this line, unless still need to redraw an old
6977      * Visual area (when 'lazyredraw' is set). */
6978     if (curwin->w_redr_type < INVERTED)
6979     {
6980 	curwin->w_old_cursor_lnum = curwin->w_cursor.lnum;
6981 	curwin->w_old_visual_lnum = curwin->w_cursor.lnum;
6982     }
6983 }
6984 
6985 #endif /* FEAT_VISUAL */
6986 
6987 /*
6988  * CTRL-W: Window commands
6989  */
6990     static void
6991 nv_window(cap)
6992     cmdarg_T	*cap;
6993 {
6994 #ifdef FEAT_WINDOWS
6995     if (!checkclearop(cap->oap))
6996 	do_window(cap->nchar, cap->count0, NUL); /* everything is in window.c */
6997 #else
6998     (void)checkclearop(cap->oap);
6999 #endif
7000 }
7001 
7002 /*
7003  * CTRL-Z: Suspend
7004  */
7005     static void
7006 nv_suspend(cap)
7007     cmdarg_T	*cap;
7008 {
7009     clearop(cap->oap);
7010 #ifdef FEAT_VISUAL
7011     if (VIsual_active)
7012 	end_visual_mode();		/* stop Visual mode */
7013 #endif
7014     do_cmdline_cmd((char_u *)"st");
7015 }
7016 
7017 /*
7018  * Commands starting with "g".
7019  */
7020     static void
7021 nv_g_cmd(cap)
7022     cmdarg_T	*cap;
7023 {
7024     oparg_T	*oap = cap->oap;
7025 #ifdef FEAT_VISUAL
7026     pos_T	tpos;
7027 #endif
7028     int		i;
7029     int		flag = FALSE;
7030 
7031     switch (cap->nchar)
7032     {
7033 #ifdef MEM_PROFILE
7034     /*
7035      * "g^A": dump log of used memory.
7036      */
7037     case Ctrl_A:
7038 	vim_mem_profile_dump();
7039 	break;
7040 #endif
7041 
7042 #ifdef FEAT_VREPLACE
7043     /*
7044      * "gR": Enter virtual replace mode.
7045      */
7046     case 'R':
7047 	cap->arg = TRUE;
7048 	nv_Replace(cap);
7049 	break;
7050 
7051     case 'r':
7052 	nv_vreplace(cap);
7053 	break;
7054 #endif
7055 
7056     case '&':
7057 	do_cmdline_cmd((char_u *)"%s//~/&");
7058 	break;
7059 
7060 #ifdef FEAT_VISUAL
7061     /*
7062      * "gv": Reselect the previous Visual area.  If Visual already active,
7063      *	     exchange previous and current Visual area.
7064      */
7065     case 'v':
7066 	if (checkclearop(oap))
7067 	    break;
7068 
7069 	if (	   curbuf->b_visual_start.lnum == 0
7070 		|| curbuf->b_visual_start.lnum > curbuf->b_ml.ml_line_count
7071 		|| curbuf->b_visual_end.lnum == 0)
7072 	    beep_flush();
7073 	else
7074 	{
7075 	    /* set w_cursor to the start of the Visual area, tpos to the end */
7076 	    if (VIsual_active)
7077 	    {
7078 		i = VIsual_mode;
7079 		VIsual_mode = curbuf->b_visual_mode;
7080 		curbuf->b_visual_mode = i;
7081 # ifdef FEAT_EVAL
7082 		curbuf->b_visual_mode_eval = i;
7083 # endif
7084 		i = curwin->w_curswant;
7085 		curwin->w_curswant = curbuf->b_visual_curswant;
7086 		curbuf->b_visual_curswant = i;
7087 
7088 		tpos = curbuf->b_visual_end;
7089 		curbuf->b_visual_end = curwin->w_cursor;
7090 		curwin->w_cursor = curbuf->b_visual_start;
7091 		curbuf->b_visual_start = VIsual;
7092 	    }
7093 	    else
7094 	    {
7095 		VIsual_mode = curbuf->b_visual_mode;
7096 		curwin->w_curswant = curbuf->b_visual_curswant;
7097 		tpos = curbuf->b_visual_end;
7098 		curwin->w_cursor = curbuf->b_visual_start;
7099 	    }
7100 
7101 	    VIsual_active = TRUE;
7102 	    VIsual_reselect = TRUE;
7103 
7104 	    /* Set Visual to the start and w_cursor to the end of the Visual
7105 	     * area.  Make sure they are on an existing character. */
7106 	    check_cursor();
7107 	    VIsual = curwin->w_cursor;
7108 	    curwin->w_cursor = tpos;
7109 	    check_cursor();
7110 	    update_topline();
7111 	    /*
7112 	     * When called from normal "g" command: start Select mode when
7113 	     * 'selectmode' contains "cmd".  When called for K_SELECT, always
7114 	     * start Select mode.
7115 	     */
7116 	    if (cap->arg)
7117 		VIsual_select = TRUE;
7118 	    else
7119 		may_start_select('c');
7120 #ifdef FEAT_MOUSE
7121 	    setmouse();
7122 #endif
7123 #ifdef FEAT_CLIPBOARD
7124 	    /* Make sure the clipboard gets updated.  Needed because start and
7125 	     * end are still the same, and the selection needs to be owned */
7126 	    clip_star.vmode = NUL;
7127 #endif
7128 	    redraw_curbuf_later(INVERTED);
7129 	    showmode();
7130 	}
7131 	break;
7132     /*
7133      * "gV": Don't reselect the previous Visual area after a Select mode
7134      *	     mapping of menu.
7135      */
7136     case 'V':
7137 	VIsual_reselect = FALSE;
7138 	break;
7139 
7140     /*
7141      * "gh":  start Select mode.
7142      * "gH":  start Select line mode.
7143      * "g^H": start Select block mode.
7144      */
7145     case K_BS:
7146 	cap->nchar = Ctrl_H;
7147 	/* FALLTHROUGH */
7148     case 'h':
7149     case 'H':
7150     case Ctrl_H:
7151 # ifdef EBCDIC
7152 	/* EBCDIC: 'v'-'h' != '^v'-'^h' */
7153 	if (cap->nchar == Ctrl_H)
7154 	    cap->cmdchar = Ctrl_V;
7155 	else
7156 # endif
7157 	cap->cmdchar = cap->nchar + ('v' - 'h');
7158 	cap->arg = TRUE;
7159 	nv_visual(cap);
7160 	break;
7161 #endif /* FEAT_VISUAL */
7162 
7163     /*
7164      * "gj" and "gk" two new funny movement keys -- up and down
7165      * movement based on *screen* line rather than *file* line.
7166      */
7167     case 'j':
7168     case K_DOWN:
7169 	/* with 'nowrap' it works just like the normal "j" command; also when
7170 	 * in a closed fold */
7171 	if (!curwin->w_p_wrap
7172 #ifdef FEAT_FOLDING
7173 		|| hasFolding(curwin->w_cursor.lnum, NULL, NULL)
7174 #endif
7175 		)
7176 	{
7177 	    oap->motion_type = MLINE;
7178 	    i = cursor_down(cap->count1, oap->op_type == OP_NOP);
7179 	}
7180 	else
7181 	    i = nv_screengo(oap, FORWARD, cap->count1);
7182 	if (i == FAIL)
7183 	    clearopbeep(oap);
7184 	break;
7185 
7186     case 'k':
7187     case K_UP:
7188 	/* with 'nowrap' it works just like the normal "k" command; also when
7189 	 * in a closed fold */
7190 	if (!curwin->w_p_wrap
7191 #ifdef FEAT_FOLDING
7192 		|| hasFolding(curwin->w_cursor.lnum, NULL, NULL)
7193 #endif
7194 	   )
7195 	{
7196 	    oap->motion_type = MLINE;
7197 	    i = cursor_up(cap->count1, oap->op_type == OP_NOP);
7198 	}
7199 	else
7200 	    i = nv_screengo(oap, BACKWARD, cap->count1);
7201 	if (i == FAIL)
7202 	    clearopbeep(oap);
7203 	break;
7204 
7205     /*
7206      * "gJ": join two lines without inserting a space.
7207      */
7208     case 'J':
7209 	nv_join(cap);
7210 	break;
7211 
7212     /*
7213      * "g0", "g^" and "g$": Like "0", "^" and "$" but for screen lines.
7214      * "gm": middle of "g0" and "g$".
7215      */
7216     case '^':
7217 	flag = TRUE;
7218 	/* FALLTHROUGH */
7219 
7220     case '0':
7221     case 'm':
7222     case K_HOME:
7223     case K_KHOME:
7224     case K_XHOME:
7225 	oap->motion_type = MCHAR;
7226 	oap->inclusive = FALSE;
7227 	if (curwin->w_p_wrap
7228 #ifdef FEAT_VERTSPLIT
7229 		&& curwin->w_width != 0
7230 #endif
7231 		)
7232 	{
7233 	    int		width1 = W_WIDTH(curwin) - curwin_col_off();
7234 	    int		width2 = width1 + curwin_col_off2();
7235 
7236 	    validate_virtcol();
7237 	    i = 0;
7238 	    if (curwin->w_virtcol >= (colnr_T)width1 && width2 > 0)
7239 		i = (curwin->w_virtcol - width1) / width2 * width2 + width1;
7240 	}
7241 	else
7242 	    i = curwin->w_leftcol;
7243 	/* Go to the middle of the screen line.  When 'number' is on and lines
7244 	 * are wrapping the middle can be more to the left.*/
7245 	if (cap->nchar == 'm')
7246 	    i += (W_WIDTH(curwin) - curwin_col_off()
7247 		    + ((curwin->w_p_wrap && i > 0)
7248 			? curwin_col_off2() : 0)) / 2;
7249 	coladvance((colnr_T)i);
7250 	if (flag)
7251 	{
7252 	    do
7253 		i = gchar_cursor();
7254 	    while (vim_iswhite(i) && oneright() == OK);
7255 	}
7256 	curwin->w_set_curswant = TRUE;
7257 	break;
7258 
7259     case '_':
7260 	/* "g_": to the last non-blank character in the line or <count> lines
7261 	 * downward. */
7262 	cap->oap->motion_type = MCHAR;
7263 	cap->oap->inclusive = TRUE;
7264 	curwin->w_curswant = MAXCOL;
7265 	if (cursor_down((long)(cap->count1 - 1),
7266 					 cap->oap->op_type == OP_NOP) == FAIL)
7267 	    clearopbeep(cap->oap);
7268 	else
7269 	{
7270 	    char_u  *ptr = ml_get_curline();
7271 
7272 	    /* In Visual mode we may end up after the line. */
7273 	    if (curwin->w_cursor.col > 0 && ptr[curwin->w_cursor.col] == NUL)
7274 		--curwin->w_cursor.col;
7275 
7276 	    /* Decrease the cursor column until it's on a non-blank. */
7277 	    while (curwin->w_cursor.col > 0
7278 				    && vim_iswhite(ptr[curwin->w_cursor.col]))
7279 		--curwin->w_cursor.col;
7280 	    curwin->w_set_curswant = TRUE;
7281 	}
7282 	break;
7283 
7284     case '$':
7285     case K_END:
7286     case K_KEND:
7287     case K_XEND:
7288 	{
7289 	    int col_off = curwin_col_off();
7290 
7291 	    oap->motion_type = MCHAR;
7292 	    oap->inclusive = TRUE;
7293 	    if (curwin->w_p_wrap
7294 #ifdef FEAT_VERTSPLIT
7295 		    && curwin->w_width != 0
7296 #endif
7297 	       )
7298 	    {
7299 		curwin->w_curswant = MAXCOL;    /* so we stay at the end */
7300 		if (cap->count1 == 1)
7301 		{
7302 		    int		width1 = W_WIDTH(curwin) - col_off;
7303 		    int		width2 = width1 + curwin_col_off2();
7304 
7305 		    validate_virtcol();
7306 		    i = width1 - 1;
7307 		    if (curwin->w_virtcol >= (colnr_T)width1)
7308 			i += ((curwin->w_virtcol - width1) / width2 + 1)
7309 								     * width2;
7310 		    coladvance((colnr_T)i);
7311 #if defined(FEAT_LINEBREAK) || defined(FEAT_MBYTE)
7312 		    if (curwin->w_cursor.col > 0 && curwin->w_p_wrap)
7313 		    {
7314 			/*
7315 			 * Check for landing on a character that got split at
7316 			 * the end of the line.  We do not want to advance to
7317 			 * the next screen line.
7318 			 */
7319 			validate_virtcol();
7320 			if (curwin->w_virtcol > (colnr_T)i)
7321 			    --curwin->w_cursor.col;
7322 		    }
7323 #endif
7324 		}
7325 		else if (nv_screengo(oap, FORWARD, cap->count1 - 1) == FAIL)
7326 		    clearopbeep(oap);
7327 	    }
7328 	    else
7329 	    {
7330 		i = curwin->w_leftcol + W_WIDTH(curwin) - col_off - 1;
7331 		coladvance((colnr_T)i);
7332 		curwin->w_set_curswant = TRUE;
7333 	    }
7334 	}
7335 	break;
7336 
7337     /*
7338      * "g*" and "g#", like "*" and "#" but without using "\<" and "\>"
7339      */
7340     case '*':
7341     case '#':
7342 #if POUND != '#'
7343     case POUND:		/* pound sign (sometimes equal to '#') */
7344 #endif
7345     case Ctrl_RSB:		/* :tag or :tselect for current identifier */
7346     case ']':			/* :tselect for current identifier */
7347 	nv_ident(cap);
7348 	break;
7349 
7350     /*
7351      * ge and gE: go back to end of word
7352      */
7353     case 'e':
7354     case 'E':
7355 	oap->motion_type = MCHAR;
7356 	curwin->w_set_curswant = TRUE;
7357 	oap->inclusive = TRUE;
7358 	if (bckend_word(cap->count1, cap->nchar == 'E', FALSE) == FAIL)
7359 	    clearopbeep(oap);
7360 	break;
7361 
7362     /*
7363      * "g CTRL-G": display info about cursor position
7364      */
7365     case Ctrl_G:
7366 	cursor_pos_info();
7367 	break;
7368 
7369     /*
7370      * "gi": start Insert at the last position.
7371      */
7372     case 'i':
7373 	if (curbuf->b_last_insert.lnum != 0)
7374 	{
7375 	    curwin->w_cursor = curbuf->b_last_insert;
7376 	    check_cursor_lnum();
7377 	    i = (int)STRLEN(ml_get_curline());
7378 	    if (curwin->w_cursor.col > (colnr_T)i)
7379 	    {
7380 #ifdef FEAT_VIRTUALEDIT
7381 		if (virtual_active())
7382 		    curwin->w_cursor.coladd += curwin->w_cursor.col - i;
7383 #endif
7384 		curwin->w_cursor.col = i;
7385 	    }
7386 	}
7387 	cap->cmdchar = 'i';
7388 	nv_edit(cap);
7389 	break;
7390 
7391     /*
7392      * "gI": Start insert in column 1.
7393      */
7394     case 'I':
7395 	beginline(0);
7396 	if (!checkclearopq(oap))
7397 	    invoke_edit(cap, FALSE, 'g', FALSE);
7398 	break;
7399 
7400 #ifdef FEAT_SEARCHPATH
7401     /*
7402      * "gf": goto file, edit file under cursor
7403      * "]f" and "[f": can also be used.
7404      */
7405     case 'f':
7406 	nv_gotofile(cap);
7407 	break;
7408 #endif
7409 
7410 	/* "g'm" and "g`m": jump to mark without setting pcmark */
7411     case '\'':
7412 	cap->arg = TRUE;
7413 	/*FALLTHROUGH*/
7414     case '`':
7415 	nv_gomark(cap);
7416 	break;
7417 
7418     /*
7419      * "gs": Goto sleep.
7420      */
7421     case 's':
7422 	do_sleep(cap->count1 * 1000L);
7423 	break;
7424 
7425     /*
7426      * "ga": Display the ascii value of the character under the
7427      * cursor.	It is displayed in decimal, hex, and octal. -- webb
7428      */
7429     case 'a':
7430 	do_ascii(NULL);
7431 	break;
7432 
7433 #ifdef FEAT_MBYTE
7434     /*
7435      * "g8": Display the bytes used for the UTF-8 character under the
7436      * cursor.	It is displayed in hex.
7437      */
7438     case '8':
7439 	show_utf8();
7440 	break;
7441 #endif
7442 
7443     /*
7444      * "gg": Goto the first line in file.  With a count it goes to
7445      * that line number like for "G". -- webb
7446      */
7447     case 'g':
7448 	cap->arg = FALSE;
7449 	nv_goto(cap);
7450 	break;
7451 
7452     /*
7453      *	 Two-character operators:
7454      *	 "gq"	    Format text
7455      *	 "gw"	    Format text and keep cursor position
7456      *	 "g~"	    Toggle the case of the text.
7457      *	 "gu"	    Change text to lower case.
7458      *	 "gU"	    Change text to upper case.
7459      *   "g?"	    rot13 encoding
7460      */
7461     case 'q':
7462     case 'w':
7463 	oap->cursor_start = curwin->w_cursor;
7464 	/*FALLTHROUGH*/
7465     case '~':
7466     case 'u':
7467     case 'U':
7468     case '?':
7469 	nv_operator(cap);
7470 	break;
7471 
7472     /*
7473      * "gd": Find first occurence of pattern under the cursor in the
7474      *	 current function
7475      * "gD": idem, but in the current file.
7476      */
7477     case 'd':
7478     case 'D':
7479 	nv_gd(oap, cap->nchar);
7480 	break;
7481 
7482 #ifdef FEAT_MOUSE
7483     /*
7484      * g<*Mouse> : <C-*mouse>
7485      */
7486     case K_MIDDLEMOUSE:
7487     case K_MIDDLEDRAG:
7488     case K_MIDDLERELEASE:
7489     case K_LEFTMOUSE:
7490     case K_LEFTDRAG:
7491     case K_LEFTRELEASE:
7492     case K_RIGHTMOUSE:
7493     case K_RIGHTDRAG:
7494     case K_RIGHTRELEASE:
7495     case K_X1MOUSE:
7496     case K_X1DRAG:
7497     case K_X1RELEASE:
7498     case K_X2MOUSE:
7499     case K_X2DRAG:
7500     case K_X2RELEASE:
7501 	mod_mask = MOD_MASK_CTRL;
7502 	(void)do_mouse(oap, cap->nchar, BACKWARD, cap->count1, 0);
7503 	break;
7504 #endif
7505 
7506     case K_IGNORE:
7507 	break;
7508 
7509     /*
7510      * "gP" and "gp": same as "P" and "p" but leave cursor just after new text
7511      */
7512     case 'p':
7513     case 'P':
7514 	nv_put(cap);
7515 	break;
7516 
7517 #ifdef FEAT_BYTEOFF
7518     /* "go": goto byte count from start of buffer */
7519     case 'o':
7520 	goto_byte(cap->count0);
7521 	break;
7522 #endif
7523 
7524     /* "gQ": improved Ex mode */
7525     case 'Q':
7526 #ifdef FEAT_CMDWIN
7527 	if (cmdwin_type != 0)
7528 	{
7529 	    clearopbeep(cap->oap);
7530 	    break;
7531 	}
7532 #endif
7533 	if (!checkclearopq(oap))
7534 	    do_exmode(TRUE);
7535 	break;
7536 
7537 #ifdef FEAT_JUMPLIST
7538     case ',':
7539 	nv_pcmark(cap);
7540 	break;
7541 
7542     case ';':
7543 	cap->count1 = -cap->count1;
7544 	nv_pcmark(cap);
7545 	break;
7546 #endif
7547 
7548     default:
7549 	clearopbeep(oap);
7550 	break;
7551     }
7552 }
7553 
7554 /*
7555  * Handle "o" and "O" commands.
7556  */
7557     static void
7558 n_opencmd(cap)
7559     cmdarg_T	*cap;
7560 {
7561     if (!checkclearopq(cap->oap))
7562     {
7563 #ifdef FEAT_FOLDING
7564 	if (cap->cmdchar == 'O')
7565 	    /* Open above the first line of a folded sequence of lines */
7566 	    (void)hasFolding(curwin->w_cursor.lnum,
7567 						&curwin->w_cursor.lnum, NULL);
7568 	else
7569 	    /* Open below the last line of a folded sequence of lines */
7570 	    (void)hasFolding(curwin->w_cursor.lnum,
7571 						NULL, &curwin->w_cursor.lnum);
7572 #endif
7573 	if (u_save((linenr_T)(curwin->w_cursor.lnum -
7574 					       (cap->cmdchar == 'O' ? 1 : 0)),
7575 		   (linenr_T)(curwin->w_cursor.lnum +
7576 					       (cap->cmdchar == 'o' ? 1 : 0))
7577 		       ) == OK
7578 		&& open_line(cap->cmdchar == 'O' ? BACKWARD : FORWARD,
7579 #ifdef FEAT_COMMENTS
7580 		    has_format_option(FO_OPEN_COMS) ? OPENLINE_DO_COM :
7581 #endif
7582 		    0, 0))
7583 	{
7584 	    invoke_edit(cap, FALSE, cap->cmdchar, TRUE);
7585 	}
7586     }
7587 }
7588 
7589 /*
7590  * "." command: redo last change.
7591  */
7592     static void
7593 nv_dot(cap)
7594     cmdarg_T	*cap;
7595 {
7596     if (!checkclearopq(cap->oap))
7597     {
7598 	/*
7599 	 * If "restart_edit" is TRUE, the last but one command is repeated
7600 	 * instead of the last command (inserting text). This is used for
7601 	 * CTRL-O <.> in insert mode.
7602 	 */
7603 	if (start_redo(cap->count0, restart_edit != 0 && !arrow_used) == FAIL)
7604 	    clearopbeep(cap->oap);
7605     }
7606 }
7607 
7608 /*
7609  * CTRL-R: undo undo
7610  */
7611     static void
7612 nv_redo(cap)
7613     cmdarg_T	*cap;
7614 {
7615     if (!checkclearopq(cap->oap))
7616     {
7617 	u_redo((int)cap->count1);
7618 	curwin->w_set_curswant = TRUE;
7619     }
7620 }
7621 
7622 /*
7623  * Handle "U" command.
7624  */
7625     static void
7626 nv_Undo(cap)
7627     cmdarg_T	*cap;
7628 {
7629     /* In Visual mode and typing "gUU" triggers an operator */
7630     if (cap->oap->op_type == OP_UPPER
7631 #ifdef FEAT_VISUAL
7632 	    || VIsual_active
7633 #endif
7634 	    )
7635     {
7636 	/* translate "gUU" to "gUgU" */
7637 	cap->cmdchar = 'g';
7638 	cap->nchar = 'U';
7639 	nv_operator(cap);
7640     }
7641     else if (!checkclearopq(cap->oap))
7642     {
7643 	u_undoline();
7644 	curwin->w_set_curswant = TRUE;
7645     }
7646 }
7647 
7648 /*
7649  * '~' command: If tilde is not an operator and Visual is off: swap case of a
7650  * single character.
7651  */
7652     static void
7653 nv_tilde(cap)
7654     cmdarg_T	*cap;
7655 {
7656     if (!p_to
7657 #ifdef FEAT_VISUAL
7658 	    && !VIsual_active
7659 #endif
7660 	    && cap->oap->op_type != OP_TILDE)
7661 	n_swapchar(cap);
7662     else
7663 	nv_operator(cap);
7664 }
7665 
7666 /*
7667  * Handle an operator command.
7668  * The actual work is done by do_pending_operator().
7669  */
7670     static void
7671 nv_operator(cap)
7672     cmdarg_T	*cap;
7673 {
7674     int	    op_type;
7675 
7676     op_type = get_op_type(cap->cmdchar, cap->nchar);
7677 
7678     if (op_type == cap->oap->op_type)	    /* double operator works on lines */
7679 	nv_lineop(cap);
7680     else if (!checkclearop(cap->oap))
7681     {
7682 	cap->oap->start = curwin->w_cursor;
7683 	cap->oap->op_type = op_type;
7684     }
7685 }
7686 
7687 /*
7688  * Handle linewise operator "dd", "yy", etc.
7689  *
7690  * "_" is is a strange motion command that helps make operators more logical.
7691  * It is actually implemented, but not documented in the real Vi.  This motion
7692  * command actually refers to "the current line".  Commands like "dd" and "yy"
7693  * are really an alternate form of "d_" and "y_".  It does accept a count, so
7694  * "d3_" works to delete 3 lines.
7695  */
7696     static void
7697 nv_lineop(cap)
7698     cmdarg_T	*cap;
7699 {
7700     cap->oap->motion_type = MLINE;
7701     if (cursor_down(cap->count1 - 1L, cap->oap->op_type == OP_NOP) == FAIL)
7702 	clearopbeep(cap->oap);
7703     else if (  cap->oap->op_type == OP_DELETE
7704 	    || cap->oap->op_type == OP_LSHIFT
7705 	    || cap->oap->op_type == OP_RSHIFT)
7706 	beginline(BL_SOL | BL_FIX);
7707     else if (cap->oap->op_type != OP_YANK)	/* 'Y' does not move cursor */
7708 	beginline(BL_WHITE | BL_FIX);
7709 }
7710 
7711 /*
7712  * <Home> command.
7713  */
7714     static void
7715 nv_home(cap)
7716     cmdarg_T	*cap;
7717 {
7718     cap->count0 = 1;
7719     nv_pipe(cap);
7720 }
7721 
7722 /*
7723  * "|" command.
7724  */
7725     static void
7726 nv_pipe(cap)
7727     cmdarg_T *cap;
7728 {
7729     cap->oap->motion_type = MCHAR;
7730     cap->oap->inclusive = FALSE;
7731     beginline(0);
7732     if (cap->count0 > 0)
7733     {
7734 	coladvance((colnr_T)(cap->count0 - 1));
7735 	curwin->w_curswant = (colnr_T)(cap->count0 - 1);
7736     }
7737     else
7738 	curwin->w_curswant = 0;
7739     /* keep curswant at the column where we wanted to go, not where
7740        we ended; differs if line is too short */
7741     curwin->w_set_curswant = FALSE;
7742 }
7743 
7744 /*
7745  * Handle back-word command "b" and "B".
7746  * cap->arg is 1 for "B"
7747  */
7748     static void
7749 nv_bck_word(cap)
7750     cmdarg_T	*cap;
7751 {
7752     cap->oap->motion_type = MCHAR;
7753     cap->oap->inclusive = FALSE;
7754     curwin->w_set_curswant = TRUE;
7755     if (bck_word(cap->count1, cap->arg, FALSE) == FAIL)
7756 	clearopbeep(cap->oap);
7757 #ifdef FEAT_FOLDING
7758     else if ((fdo_flags & FDO_HOR) && KeyTyped && cap->oap->op_type == OP_NOP)
7759 	foldOpenCursor();
7760 #endif
7761 }
7762 
7763 /*
7764  * Handle word motion commands "e", "E", "w" and "W".
7765  * cap->arg is TRUE for "E" and "W".
7766  */
7767     static void
7768 nv_wordcmd(cap)
7769     cmdarg_T	*cap;
7770 {
7771     int		n;
7772     int		word_end;
7773     int		flag = FALSE;
7774 
7775     /*
7776      * Set inclusive for the "E" and "e" command.
7777      */
7778     if (cap->cmdchar == 'e' || cap->cmdchar == 'E')
7779 	word_end = TRUE;
7780     else
7781 	word_end = FALSE;
7782     cap->oap->inclusive = word_end;
7783 
7784     /*
7785      * "cw" and "cW" are a special case.
7786      */
7787     if (!word_end && cap->oap->op_type == OP_CHANGE)
7788     {
7789 	n = gchar_cursor();
7790 	if (n != NUL)			/* not an empty line */
7791 	{
7792 	    if (vim_iswhite(n))
7793 	    {
7794 		/*
7795 		 * Reproduce a funny Vi behaviour: "cw" on a blank only
7796 		 * changes one character, not all blanks until the start of
7797 		 * the next word.  Only do this when the 'w' flag is included
7798 		 * in 'cpoptions'.
7799 		 */
7800 		if (cap->count1 == 1 && vim_strchr(p_cpo, CPO_CW) != NULL)
7801 		{
7802 		    cap->oap->inclusive = TRUE;
7803 		    cap->oap->motion_type = MCHAR;
7804 		    return;
7805 		}
7806 	    }
7807 	    else
7808 	    {
7809 		/*
7810 		 * This is a little strange. To match what the real Vi does,
7811 		 * we effectively map 'cw' to 'ce', and 'cW' to 'cE', provided
7812 		 * that we are not on a space or a TAB.  This seems impolite
7813 		 * at first, but it's really more what we mean when we say
7814 		 * 'cw'.
7815 		 * Another strangeness: When standing on the end of a word
7816 		 * "ce" will change until the end of the next wordt, but "cw"
7817 		 * will change only one character! This is done by setting
7818 		 * flag.
7819 		 */
7820 		cap->oap->inclusive = TRUE;
7821 		word_end = TRUE;
7822 		flag = TRUE;
7823 	    }
7824 	}
7825     }
7826 
7827     cap->oap->motion_type = MCHAR;
7828     curwin->w_set_curswant = TRUE;
7829     if (word_end)
7830 	n = end_word(cap->count1, cap->arg, flag, FALSE);
7831     else
7832 	n = fwd_word(cap->count1, cap->arg, cap->oap->op_type != OP_NOP);
7833 
7834     /* Don't leave the cursor on the NUL past a line */
7835     if (curwin->w_cursor.col && gchar_cursor() == NUL)
7836     {
7837 	--curwin->w_cursor.col;
7838 	cap->oap->inclusive = TRUE;
7839     }
7840 
7841     if (n == FAIL && cap->oap->op_type == OP_NOP)
7842 	clearopbeep(cap->oap);
7843     else
7844     {
7845 #ifdef FEAT_VISUAL
7846 	adjust_for_sel(cap);
7847 #endif
7848 #ifdef FEAT_FOLDING
7849 	if ((fdo_flags & FDO_HOR) && KeyTyped && cap->oap->op_type == OP_NOP)
7850 	    foldOpenCursor();
7851 #endif
7852     }
7853 }
7854 
7855 /*
7856  * "0" and "^" commands.
7857  * cap->arg is the argument for beginline().
7858  */
7859     static void
7860 nv_beginline(cap)
7861     cmdarg_T	*cap;
7862 {
7863     cap->oap->motion_type = MCHAR;
7864     cap->oap->inclusive = FALSE;
7865     beginline(cap->arg);
7866 #ifdef FEAT_FOLDING
7867     if ((fdo_flags & FDO_HOR) && KeyTyped && cap->oap->op_type == OP_NOP)
7868 	foldOpenCursor();
7869 #endif
7870 }
7871 
7872 #ifdef FEAT_VISUAL
7873 /*
7874  * In exclusive Visual mode, may include the last character.
7875  */
7876     static void
7877 adjust_for_sel(cap)
7878     cmdarg_T	*cap;
7879 {
7880     if (VIsual_active && cap->oap->inclusive && *p_sel == 'e'
7881 	    && gchar_cursor() != NUL && lt(VIsual, curwin->w_cursor))
7882     {
7883 # ifdef FEAT_MBYTE
7884 	if (has_mbyte)
7885 	    inc_cursor();
7886 	else
7887 # endif
7888 	    ++curwin->w_cursor.col;
7889 	cap->oap->inclusive = FALSE;
7890     }
7891 }
7892 
7893 /*
7894  * Exclude last character at end of Visual area for 'selection' == "exclusive".
7895  * Should check VIsual_mode before calling this.
7896  * Returns TRUE when backed up to the previous line.
7897  */
7898     static int
7899 unadjust_for_sel()
7900 {
7901     pos_T	*pp;
7902 
7903     if (*p_sel == 'e' && !equalpos(VIsual, curwin->w_cursor))
7904     {
7905 	if (lt(VIsual, curwin->w_cursor))
7906 	    pp = &curwin->w_cursor;
7907 	else
7908 	    pp = &VIsual;
7909 #ifdef FEAT_VIRTUALEDIT
7910 	if (pp->coladd > 0)
7911 	    --pp->coladd;
7912 	else
7913 #endif
7914 	if (pp->col > 0)
7915 	{
7916 	    --pp->col;
7917 #ifdef FEAT_MBYTE
7918 	    mb_adjustpos(pp);
7919 #endif
7920 	}
7921 	else if (pp->lnum > 1)
7922 	{
7923 	    --pp->lnum;
7924 	    pp->col = (colnr_T)STRLEN(ml_get(pp->lnum));
7925 	    return TRUE;
7926 	}
7927     }
7928     return FALSE;
7929 }
7930 
7931 /*
7932  * SELECT key in Normal or Visual mode: end of Select mode mapping.
7933  */
7934     static void
7935 nv_select(cap)
7936     cmdarg_T	*cap;
7937 {
7938     if (VIsual_active)
7939 	VIsual_select = TRUE;
7940     else if (VIsual_reselect)
7941     {
7942 	cap->nchar = 'v';	    /* fake "gv" command */
7943 	cap->arg = TRUE;
7944 	nv_g_cmd(cap);
7945     }
7946 }
7947 
7948 #endif
7949 
7950 /*
7951  * "G", "gg", CTRL-END, CTRL-HOME.
7952  * cap->arg is TRUE for "G".
7953  */
7954     static void
7955 nv_goto(cap)
7956     cmdarg_T	*cap;
7957 {
7958     linenr_T	lnum;
7959 
7960     if (cap->arg)
7961 	lnum = curbuf->b_ml.ml_line_count;
7962     else
7963 	lnum = 1L;
7964     cap->oap->motion_type = MLINE;
7965     setpcmark();
7966 
7967     /* When a count is given, use it instead of the default lnum */
7968     if (cap->count0 != 0)
7969 	lnum = cap->count0;
7970     if (lnum < 1L)
7971 	lnum = 1L;
7972     else if (lnum > curbuf->b_ml.ml_line_count)
7973 	lnum = curbuf->b_ml.ml_line_count;
7974     curwin->w_cursor.lnum = lnum;
7975     beginline(BL_SOL | BL_FIX);
7976 #ifdef FEAT_FOLDING
7977     if ((fdo_flags & FDO_JUMP) && KeyTyped && cap->oap->op_type == OP_NOP)
7978 	foldOpenCursor();
7979 #endif
7980 }
7981 
7982 /*
7983  * CTRL-\ in Normal mode.
7984  */
7985     static void
7986 nv_normal(cap)
7987     cmdarg_T	*cap;
7988 {
7989     if (cap->nchar == Ctrl_N || cap->nchar == Ctrl_G)
7990     {
7991 	clearop(cap->oap);
7992 	if (restart_edit != 0 && p_smd)
7993 	    clear_cmdline = TRUE;		/* unshow mode later */
7994 	restart_edit = 0;
7995 #ifdef FEAT_CMDWIN
7996 	if (cmdwin_type != 0)
7997 	    cmdwin_result = Ctrl_C;
7998 #endif
7999 #ifdef FEAT_VISUAL
8000 	if (VIsual_active)
8001 	{
8002 	    end_visual_mode();		/* stop Visual */
8003 	    redraw_curbuf_later(INVERTED);
8004 	}
8005 #endif
8006 	/* CTRL-\ CTRL-G restarts Insert mode when 'insertmode' is set. */
8007 	if (cap->nchar == Ctrl_G && p_im)
8008 	    restart_edit = 'a';
8009     }
8010     else
8011 	clearopbeep(cap->oap);
8012 }
8013 
8014 /*
8015  * ESC in Normal mode: beep, but don't flush buffers.
8016  * Don't even beep if we are canceling a command.
8017  */
8018     static void
8019 nv_esc(cap)
8020     cmdarg_T	*cap;
8021 {
8022     int		no_reason;
8023 
8024     no_reason = (cap->oap->op_type == OP_NOP
8025 		&& cap->opcount == 0
8026 		&& cap->count0 == 0
8027 		&& cap->oap->regname == 0
8028 		&& !p_im);
8029 
8030     if (cap->arg)		/* TRUE for CTRL-C */
8031     {
8032 	if (restart_edit == 0
8033 #ifdef FEAT_CMDWIN
8034 		&& cmdwin_type == 0
8035 #endif
8036 #ifdef FEAT_VISUAL
8037 		&& !VIsual_active
8038 #endif
8039 		&& no_reason)
8040 	    MSG(_("Type  :quit<Enter>  to exit Vim"));
8041 
8042 	/* Don't reset "restart_edit" when 'insertmode' is set, it won't be
8043 	 * set again below when halfway a mapping. */
8044 	if (!p_im)
8045 	    restart_edit = 0;
8046 #ifdef FEAT_CMDWIN
8047 	if (cmdwin_type != 0)
8048 	{
8049 	    cmdwin_result = K_IGNORE;
8050 	    got_int = FALSE;	/* don't stop executing autocommands et al. */
8051 	    return;
8052 	}
8053 #endif
8054     }
8055 
8056 #ifdef FEAT_VISUAL
8057     if (VIsual_active)
8058     {
8059 	end_visual_mode();	/* stop Visual */
8060 	check_cursor_col();	/* make sure cursor is not beyond EOL */
8061 	curwin->w_set_curswant = TRUE;
8062 	redraw_curbuf_later(INVERTED);
8063     }
8064     else
8065 #endif
8066 	if (no_reason)
8067 	    vim_beep();
8068     clearop(cap->oap);
8069 
8070     /* A CTRL-C is often used at the start of a menu.  When 'insertmode' is
8071      * set return to Insert mode afterwards. */
8072     if (restart_edit == 0 && goto_im()
8073 #ifdef FEAT_EX_EXTRA
8074 	    && ex_normal_busy == 0
8075 #endif
8076 	    )
8077 	restart_edit = 'a';
8078 }
8079 
8080 /*
8081  * Handle "A", "a", "I", "i" and <Insert> commands.
8082  */
8083     static void
8084 nv_edit(cap)
8085     cmdarg_T *cap;
8086 {
8087     /* <Insert> is equal to "i" */
8088     if (cap->cmdchar == K_INS || cap->cmdchar == K_KINS)
8089 	cap->cmdchar = 'i';
8090 
8091 #ifdef FEAT_VISUAL
8092     /* in Visual mode "A" and "I" are an operator */
8093     if (VIsual_active && (cap->cmdchar == 'A' || cap->cmdchar == 'I'))
8094 	v_visop(cap);
8095 
8096     /* in Visual mode and after an operator "a" and "i" are for text objects */
8097     else
8098 #endif
8099 	if ((cap->cmdchar == 'a' || cap->cmdchar == 'i')
8100 	    && (cap->oap->op_type != OP_NOP
8101 #ifdef FEAT_VISUAL
8102 		|| VIsual_active
8103 #endif
8104 		))
8105     {
8106 #ifdef FEAT_TEXTOBJ
8107 	nv_object(cap);
8108 #else
8109 	clearopbeep(cap->oap);
8110 #endif
8111     }
8112     else if (!curbuf->b_p_ma && !p_im)
8113     {
8114 	/* Only give this error when 'insertmode' is off. */
8115 	EMSG(_(e_modifiable));
8116 	clearop(cap->oap);
8117     }
8118     else if (!checkclearopq(cap->oap))
8119     {
8120 	switch (cap->cmdchar)
8121 	{
8122 	    case 'A':	/* "A"ppend after the line */
8123 		curwin->w_set_curswant = TRUE;
8124 #ifdef FEAT_VIRTUALEDIT
8125 		if (ve_flags == VE_ALL)
8126 		{
8127 		    int save_State = State;
8128 
8129 		    /* Pretent Insert mode here to allow the cursor on the
8130 		     * character past the end of the line */
8131 		    State = INSERT;
8132 		    coladvance((colnr_T)MAXCOL);
8133 		    State = save_State;
8134 		}
8135 		else
8136 #endif
8137 		    curwin->w_cursor.col += (colnr_T)STRLEN(ml_get_cursor());
8138 		break;
8139 
8140 	    case 'I':	/* "I"nsert before the first non-blank */
8141 		beginline(BL_WHITE);
8142 		break;
8143 
8144 	    case 'a':	/* "a"ppend is like "i"nsert on the next character. */
8145 #ifdef FEAT_VIRTUALEDIT
8146 		/* increment coladd when in virtual space, increment the
8147 		 * column otherwise, also to append after an unprintable char */
8148 		if (virtual_active()
8149 			&& (curwin->w_cursor.coladd > 0
8150 			    || *ml_get_cursor() == NUL
8151 			    || *ml_get_cursor() == TAB))
8152 		    curwin->w_cursor.coladd++;
8153 		else
8154 #endif
8155 		if (*ml_get_cursor() != NUL)
8156 		    inc_cursor();
8157 		break;
8158 	}
8159 
8160 #ifdef FEAT_VIRTUALEDIT
8161 	if (curwin->w_cursor.coladd && cap->cmdchar != 'A')
8162 	{
8163 	    int save_State = State;
8164 
8165 	    /* Pretent Insert mode here to allow the cursor on the
8166 	     * character past the end of the line */
8167 	    State = INSERT;
8168 	    coladvance(getviscol());
8169 	    State = save_State;
8170 	}
8171 #endif
8172 
8173 	invoke_edit(cap, FALSE, cap->cmdchar, FALSE);
8174     }
8175 }
8176 
8177 /*
8178  * Invoke edit() and take care of "restart_edit" and the return value.
8179  */
8180     static void
8181 invoke_edit(cap, repl, cmd, startln)
8182     cmdarg_T	*cap;
8183     int		repl;		/* "r" or "gr" command */
8184     int		cmd;
8185     int		startln;
8186 {
8187     int		restart_edit_save = 0;
8188 
8189     /* Complicated: When the user types "a<C-O>a" we don't want to do Insert
8190      * mode recursively.  But when doing "a<C-O>." or "a<C-O>rx" we do allow
8191      * it. */
8192     if (repl || !stuff_empty())
8193 	restart_edit_save = restart_edit;
8194     else
8195 	restart_edit_save = 0;
8196 
8197     /* Always reset "restart_edit", this is not a restarted edit. */
8198     restart_edit = 0;
8199 
8200     if (edit(cmd, startln, cap->count1))
8201 	cap->retval |= CA_COMMAND_BUSY;
8202 
8203     if (restart_edit == 0)
8204 	restart_edit = restart_edit_save;
8205 }
8206 
8207 #ifdef FEAT_TEXTOBJ
8208 /*
8209  * "a" or "i" while an operator is pending or in Visual mode: object motion.
8210  */
8211     static void
8212 nv_object(cap)
8213     cmdarg_T	*cap;
8214 {
8215     int		flag;
8216     int		include;
8217     char_u	*mps_save;
8218 
8219     if (cap->cmdchar == 'i')
8220 	include = FALSE;    /* "ix" = inner object: exclude white space */
8221     else
8222 	include = TRUE;	    /* "ax" = an object: include white space */
8223 
8224     /* Make sure (), [], {} and <> are in 'matchpairs' */
8225     mps_save = curbuf->b_p_mps;
8226     curbuf->b_p_mps = (char_u *)"(:),{:},[:],<:>";
8227 
8228     switch (cap->nchar)
8229     {
8230 	case 'w': /* "aw" = a word */
8231 		flag = current_word(cap->oap, cap->count1, include, FALSE);
8232 		break;
8233 	case 'W': /* "aW" = a WORD */
8234 		flag = current_word(cap->oap, cap->count1, include, TRUE);
8235 		break;
8236 	case 'b': /* "ab" = a braces block */
8237 	case '(':
8238 	case ')':
8239 		flag = current_block(cap->oap, cap->count1, include, '(', ')');
8240 		break;
8241 	case 'B': /* "aB" = a Brackets block */
8242 	case '{':
8243 	case '}':
8244 		flag = current_block(cap->oap, cap->count1, include, '{', '}');
8245 		break;
8246 	case '[': /* "a[" = a [] block */
8247 	case ']':
8248 		flag = current_block(cap->oap, cap->count1, include, '[', ']');
8249 		break;
8250 	case '<': /* "a<" = a <> block */
8251 	case '>':
8252 		flag = current_block(cap->oap, cap->count1, include, '<', '>');
8253 		break;
8254 	case 'p': /* "ap" = a paragraph */
8255 		flag = current_par(cap->oap, cap->count1, include, 'p');
8256 		break;
8257 	case 's': /* "as" = a sentence */
8258 		flag = current_sent(cap->oap, cap->count1, include);
8259 		break;
8260 	case '"': /* "a"" = a double quoted string */
8261 	case '\'': /* "a'" = a single quoted string */
8262 	case '`': /* "a`" = a backtick quoted string */
8263 		flag = current_quote(cap->oap, cap->count1, include,
8264 								  cap->nchar);
8265 		break;
8266 #if 0	/* TODO */
8267 	case 'S': /* "aS" = a section */
8268 	case 'f': /* "af" = a filename */
8269 	case 'u': /* "au" = a URL */
8270 #endif
8271 	default:
8272 		flag = FAIL;
8273 		break;
8274     }
8275 
8276     curbuf->b_p_mps = mps_save;
8277     if (flag == FAIL)
8278 	clearopbeep(cap->oap);
8279     adjust_cursor_col();
8280     curwin->w_set_curswant = TRUE;
8281 }
8282 #endif
8283 
8284 /*
8285  * "q" command: Start/stop recording.
8286  * "q:", "q/", "q?": edit command-line in command-line window.
8287  */
8288     static void
8289 nv_record(cap)
8290     cmdarg_T	*cap;
8291 {
8292     if (cap->oap->op_type == OP_FORMAT)
8293     {
8294 	/* "gqq" is the same as "gqgq": format line */
8295 	cap->cmdchar = 'g';
8296 	cap->nchar = 'q';
8297 	nv_operator(cap);
8298     }
8299     else if (!checkclearop(cap->oap))
8300     {
8301 #ifdef FEAT_CMDWIN
8302 	if (cap->nchar == ':' || cap->nchar == '/' || cap->nchar == '?')
8303 	{
8304 	    stuffcharReadbuff(cap->nchar);
8305 	    stuffcharReadbuff(K_CMDWIN);
8306 	}
8307 	else
8308 #endif
8309 	    /* (stop) recording into a named register, unless executing a
8310 	     * register */
8311 	    if (!Exec_reg && do_record(cap->nchar) == FAIL)
8312 		clearopbeep(cap->oap);
8313     }
8314 }
8315 
8316 /*
8317  * Handle the "@r" command.
8318  */
8319     static void
8320 nv_at(cap)
8321     cmdarg_T	*cap;
8322 {
8323     if (checkclearop(cap->oap))
8324 	return;
8325 #ifdef FEAT_EVAL
8326     if (cap->nchar == '=')
8327     {
8328 	if (get_expr_register() == NUL)
8329 	    return;
8330     }
8331 #endif
8332     while (cap->count1-- && !got_int)
8333     {
8334 	if (do_execreg(cap->nchar, FALSE, FALSE) == FAIL)
8335 	{
8336 	    clearopbeep(cap->oap);
8337 	    break;
8338 	}
8339 	line_breakcheck();
8340     }
8341 }
8342 
8343 /*
8344  * Handle the CTRL-U and CTRL-D commands.
8345  */
8346     static void
8347 nv_halfpage(cap)
8348     cmdarg_T	*cap;
8349 {
8350     if ((cap->cmdchar == Ctrl_U && curwin->w_cursor.lnum == 1)
8351 	    || (cap->cmdchar == Ctrl_D
8352 		&& curwin->w_cursor.lnum == curbuf->b_ml.ml_line_count))
8353 	clearopbeep(cap->oap);
8354     else if (!checkclearop(cap->oap))
8355 	halfpage(cap->cmdchar == Ctrl_D, cap->count0);
8356 }
8357 
8358 /*
8359  * Handle "J" or "gJ" command.
8360  */
8361     static void
8362 nv_join(cap)
8363     cmdarg_T *cap;
8364 {
8365 #ifdef FEAT_VISUAL
8366     if (VIsual_active)	/* join the visual lines */
8367 	nv_operator(cap);
8368     else
8369 #endif
8370 	if (!checkclearop(cap->oap))
8371     {
8372 	if (cap->count0 <= 1)
8373 	    cap->count0 = 2;	    /* default for join is two lines! */
8374 	if (curwin->w_cursor.lnum + cap->count0 - 1 >
8375 						   curbuf->b_ml.ml_line_count)
8376 	    clearopbeep(cap->oap);  /* beyond last line */
8377 	else
8378 	{
8379 	    prep_redo(cap->oap->regname, cap->count0,
8380 			 NUL, cap->cmdchar, NUL, NUL, cap->nchar);
8381 	    do_do_join(cap->count0, cap->nchar == NUL);
8382 	}
8383     }
8384 }
8385 
8386 /*
8387  * "P", "gP", "p" and "gp" commands.
8388  */
8389     static void
8390 nv_put(cap)
8391     cmdarg_T  *cap;
8392 {
8393 #ifdef FEAT_VISUAL
8394     int		regname = 0;
8395     void	*reg1 = NULL, *reg2 = NULL;
8396 #endif
8397     int		dir;
8398     int		flags = 0;
8399 
8400     if (cap->oap->op_type != OP_NOP)
8401     {
8402 #ifdef FEAT_DIFF
8403 	/* "dp" is ":diffput" */
8404 	if (cap->oap->op_type == OP_DELETE && cap->cmdchar == 'p')
8405 	{
8406 	    clearop(cap->oap);
8407 	    nv_diffgetput(TRUE);
8408 	}
8409 	else
8410 #endif
8411 	clearopbeep(cap->oap);
8412     }
8413     else
8414     {
8415 	dir = (cap->cmdchar == 'P'
8416 		|| (cap->cmdchar == 'g' && cap->nchar == 'P'))
8417 							 ? BACKWARD : FORWARD;
8418 	prep_redo_cmd(cap);
8419 	if (cap->cmdchar == 'g')
8420 	    flags |= PUT_CURSEND;
8421 
8422 #ifdef FEAT_VISUAL
8423 	if (VIsual_active)
8424 	{
8425 	    /* Putting in Visual mode: The put text replaces the selected
8426 	     * text.  First delete the selected text, then put the new text.
8427 	     * Need to save and restore the registers that the delete
8428 	     * overwrites if the old contents is being put.
8429 	     */
8430 	    regname = cap->oap->regname;
8431 # ifdef FEAT_CLIPBOARD
8432 	    adjust_clip_reg(&regname);
8433 # endif
8434 	    if (regname == 0 || VIM_ISDIGIT(regname)
8435 # ifdef FEAT_CLIPBOARD
8436 		    || (clip_unnamed && (regname == '*' || regname == '+'))
8437 # endif
8438 
8439 		    )
8440 	    {
8441 		/* the delete is going to overwrite the register we want to
8442 		 * put, save it first. */
8443 		reg1 = get_register(regname, TRUE);
8444 	    }
8445 
8446 	    /* Now delete the selected text. */
8447 	    cap->cmdchar = 'd';
8448 	    cap->nchar = NUL;
8449 	    cap->oap->regname = NUL;
8450 	    nv_operator(cap);
8451 	    do_pending_operator(cap, 0, FALSE);
8452 
8453 	    /* delete PUT_LINE_BACKWARD; */
8454 	    cap->oap->regname = regname;
8455 
8456 	    if (reg1 != NULL)
8457 	    {
8458 		/* Delete probably changed the register we want to put, save
8459 		 * it first. Then put back what was there before the delete. */
8460 		reg2 = get_register(regname, FALSE);
8461 		put_register(regname, reg1);
8462 	    }
8463 
8464 	    /* When deleted a linewise Visual area, put the register as
8465 	     * lines to avoid it joined with the next line.  When deletion was
8466 	     * characterwise, split a line when putting lines. */
8467 	    if (VIsual_mode == 'V')
8468 		flags |= PUT_LINE;
8469 	    else if (VIsual_mode == 'v')
8470 		flags |= PUT_LINE_SPLIT;
8471 	    if (VIsual_mode == Ctrl_V && dir == FORWARD)
8472 		flags |= PUT_LINE_FORWARD;
8473 	    dir = BACKWARD;
8474 	    if ((VIsual_mode != 'V'
8475 			&& curwin->w_cursor.col < curbuf->b_op_start.col)
8476 		    || (VIsual_mode == 'V'
8477 			&& curwin->w_cursor.lnum < curbuf->b_op_start.lnum))
8478 		/* cursor is at the end of the line or end of file, put
8479 		 * forward. */
8480 		dir = FORWARD;
8481 	}
8482 #endif
8483 	do_put(cap->oap->regname, dir, cap->count1, flags);
8484 
8485 #ifdef FEAT_VISUAL
8486 	/* If a register was saved, put it back now. */
8487 	if (reg2 != NULL)
8488 	    put_register(regname, reg2);
8489 #endif
8490 	auto_format(FALSE, TRUE);
8491     }
8492 }
8493 
8494 /*
8495  * "o" and "O" commands.
8496  */
8497     static void
8498 nv_open(cap)
8499     cmdarg_T	*cap;
8500 {
8501 #ifdef FEAT_DIFF
8502     /* "do" is ":diffget" */
8503     if (cap->oap->op_type == OP_DELETE && cap->cmdchar == 'o')
8504     {
8505 	clearop(cap->oap);
8506 	nv_diffgetput(FALSE);
8507     }
8508     else
8509 #endif
8510 #ifdef FEAT_VISUAL
8511     if (VIsual_active)  /* switch start and end of visual */
8512 	v_swap_corners(cap->cmdchar);
8513     else
8514 #endif
8515 	n_opencmd(cap);
8516 }
8517 
8518 #ifdef FEAT_SNIFF
8519 /*ARGSUSED*/
8520     static void
8521 nv_sniff(cap)
8522     cmdarg_T	*cap;
8523 {
8524     ProcessSniffRequests();
8525 }
8526 #endif
8527 
8528 #ifdef FEAT_NETBEANS_INTG
8529     static void
8530 nv_nbcmd(cap)
8531     cmdarg_T	*cap;
8532 {
8533     netbeans_keycommand(cap->nchar);
8534 }
8535 #endif
8536 
8537 #ifdef FEAT_DND
8538 /*ARGSUSED*/
8539     static void
8540 nv_drop(cap)
8541     cmdarg_T	*cap;
8542 {
8543     do_put('~', BACKWARD, 1L, PUT_CURSEND);
8544 }
8545 #endif
8546