xref: /vim-8.2.3635/src/ex_docmd.c (revision 7171abea)
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 /*
11  * ex_docmd.c: functions for executing an Ex command line.
12  */
13 
14 #include "vim.h"
15 
16 #ifdef HAVE_FCNTL_H
17 # include <fcntl.h>	    /* for chdir() */
18 #endif
19 
20 static int	quitmore = 0;
21 static int	ex_pressedreturn = FALSE;
22 #ifndef FEAT_PRINTER
23 # define ex_hardcopy	ex_ni
24 #endif
25 
26 #ifdef FEAT_USR_CMDS
27 typedef struct ucmd
28 {
29     char_u	*uc_name;	/* The command name */
30     long_u	uc_argt;	/* The argument type */
31     char_u	*uc_rep;	/* The command's replacement string */
32     long	uc_def;		/* The default value for a range/count */
33     scid_T	uc_scriptID;	/* SID where the command was defined */
34     int		uc_compl;	/* completion type */
35 # if defined(FEAT_EVAL) && defined(FEAT_CMDL_COMPL)
36     char_u	*uc_compl_arg;	/* completion argument if any */
37 # endif
38 } ucmd_T;
39 
40 #define UC_BUFFER	1	/* -buffer: local to current buffer */
41 
42 garray_T ucmds = {0, 0, sizeof(ucmd_T), 4, NULL};
43 
44 #define USER_CMD(i) (&((ucmd_T *)(ucmds.ga_data))[i])
45 #define USER_CMD_GA(gap, i) (&((ucmd_T *)((gap)->ga_data))[i])
46 
47 static void do_ucmd __ARGS((exarg_T *eap));
48 static void ex_command __ARGS((exarg_T *eap));
49 static void ex_comclear __ARGS((exarg_T *eap));
50 static void ex_delcommand __ARGS((exarg_T *eap));
51 # ifdef FEAT_CMDL_COMPL
52 static char_u *get_user_command_name __ARGS((int idx));
53 # endif
54 
55 #else
56 # define ex_command	ex_ni
57 # define ex_comclear	ex_ni
58 # define ex_delcommand	ex_ni
59 #endif
60 
61 #ifdef FEAT_EVAL
62 static char_u	*do_one_cmd __ARGS((char_u **, int, struct condstack *, char_u *(*getline)(int, void *, int), void *cookie));
63 #else
64 static char_u	*do_one_cmd __ARGS((char_u **, int, char_u *(*getline)(int, void *, int), void *cookie));
65 static int	if_level = 0;		/* depth in :if */
66 #endif
67 static int	checkforcmd __ARGS((char_u **pp, char *cmd, int len));
68 static char_u	*find_command __ARGS((exarg_T *eap, int *full));
69 
70 static void	ex_abbreviate __ARGS((exarg_T *eap));
71 static void	ex_map __ARGS((exarg_T *eap));
72 static void	ex_unmap __ARGS((exarg_T *eap));
73 static void	ex_mapclear __ARGS((exarg_T *eap));
74 static void	ex_abclear __ARGS((exarg_T *eap));
75 #ifndef FEAT_MENU
76 # define ex_emenu		ex_ni
77 # define ex_menu		ex_ni
78 # define ex_menutranslate	ex_ni
79 #endif
80 #ifdef FEAT_AUTOCMD
81 static void	ex_autocmd __ARGS((exarg_T *eap));
82 static void	ex_doautocmd __ARGS((exarg_T *eap));
83 #else
84 # define ex_autocmd		ex_ni
85 # define ex_doautocmd		ex_ni
86 # define ex_doautoall		ex_ni
87 #endif
88 #ifdef FEAT_LISTCMDS
89 static void	ex_bunload __ARGS((exarg_T *eap));
90 static void	ex_buffer __ARGS((exarg_T *eap));
91 static void	ex_bmodified __ARGS((exarg_T *eap));
92 static void	ex_bnext __ARGS((exarg_T *eap));
93 static void	ex_bprevious __ARGS((exarg_T *eap));
94 static void	ex_brewind __ARGS((exarg_T *eap));
95 static void	ex_blast __ARGS((exarg_T *eap));
96 #else
97 # define ex_bunload		ex_ni
98 # define ex_buffer		ex_ni
99 # define ex_bmodified		ex_ni
100 # define ex_bnext		ex_ni
101 # define ex_bprevious		ex_ni
102 # define ex_brewind		ex_ni
103 # define ex_blast		ex_ni
104 # define buflist_list		ex_ni
105 # define ex_checktime		ex_ni
106 #endif
107 #if !defined(FEAT_LISTCMDS) || !defined(FEAT_WINDOWS)
108 # define ex_buffer_all		ex_ni
109 #endif
110 static char_u	*getargcmd __ARGS((char_u **));
111 static char_u	*skip_cmd_arg __ARGS((char_u *p, int rembs));
112 static int	getargopt __ARGS((exarg_T *eap));
113 #ifndef FEAT_QUICKFIX
114 # define ex_make		ex_ni
115 # define ex_cc			ex_ni
116 # define ex_cnext		ex_ni
117 # define ex_cfile		ex_ni
118 # define qf_list		ex_ni
119 # define qf_age			ex_ni
120 # define ex_helpgrep		ex_ni
121 #endif
122 #if !defined(FEAT_QUICKFIX) || !defined(FEAT_WINDOWS)
123 # define ex_cclose		ex_ni
124 # define ex_copen		ex_ni
125 # define ex_cwindow		ex_ni
126 #endif
127 
128 static int	check_more __ARGS((int, int));
129 static linenr_T get_address __ARGS((char_u **, int skip, int to_other_file));
130 #if !defined(FEAT_PERL) || !defined(FEAT_PYTHON) || !defined(FEAT_TCL) \
131 	|| !defined(FEAT_RUBY) || !defined(FEAT_MZSCHEME)
132 static void	ex_script_ni __ARGS((exarg_T *eap));
133 #endif
134 static char_u	*invalid_range __ARGS((exarg_T *eap));
135 static void	correct_range __ARGS((exarg_T *eap));
136 static char_u	*repl_cmdline __ARGS((exarg_T *eap, char_u *src, int srclen, char_u *repl, char_u **cmdlinep));
137 static void	ex_highlight __ARGS((exarg_T *eap));
138 static void	ex_colorscheme __ARGS((exarg_T *eap));
139 static void	ex_quit __ARGS((exarg_T *eap));
140 static void	ex_cquit __ARGS((exarg_T *eap));
141 static void	ex_quit_all __ARGS((exarg_T *eap));
142 #ifdef FEAT_WINDOWS
143 static void	ex_close __ARGS((exarg_T *eap));
144 static void	ex_win_close __ARGS((exarg_T *eap, win_T *win));
145 static void	ex_only __ARGS((exarg_T *eap));
146 static void	ex_all __ARGS((exarg_T *eap));
147 static void	ex_resize __ARGS((exarg_T *eap));
148 static void	ex_stag __ARGS((exarg_T *eap));
149 #else
150 # define ex_close		ex_ni
151 # define ex_only		ex_ni
152 # define ex_all			ex_ni
153 # define ex_resize		ex_ni
154 # define ex_splitview		ex_ni
155 # define ex_stag		ex_ni
156 #endif
157 #if defined(FEAT_WINDOWS) && defined(FEAT_QUICKFIX)
158 static void	ex_pclose __ARGS((exarg_T *eap));
159 static void	ex_ptag __ARGS((exarg_T *eap));
160 static void	ex_pedit __ARGS((exarg_T *eap));
161 #else
162 # define ex_pclose		ex_ni
163 # define ex_ptag		ex_ni
164 # define ex_pedit		ex_ni
165 #endif
166 static void	ex_hide __ARGS((exarg_T *eap));
167 static void	ex_stop __ARGS((exarg_T *eap));
168 static void	ex_exit __ARGS((exarg_T *eap));
169 static void	ex_print __ARGS((exarg_T *eap));
170 #ifdef FEAT_BYTEOFF
171 static void	ex_goto __ARGS((exarg_T *eap));
172 #else
173 # define ex_goto		ex_ni
174 #endif
175 static void	ex_shell __ARGS((exarg_T *eap));
176 static void	ex_preserve __ARGS((exarg_T *eap));
177 static void	ex_recover __ARGS((exarg_T *eap));
178 #ifndef FEAT_LISTCMDS
179 # define ex_argedit		ex_ni
180 # define ex_argadd		ex_ni
181 # define ex_argdelete		ex_ni
182 # define ex_listdo		ex_ni
183 #endif
184 static void	ex_mode __ARGS((exarg_T *eap));
185 static void	ex_wrongmodifier __ARGS((exarg_T *eap));
186 static void	ex_find __ARGS((exarg_T *eap));
187 static void	ex_edit __ARGS((exarg_T *eap));
188 #if !defined(FEAT_GUI) && !defined(FEAT_CLIENTSERVER)
189 # define ex_drop		ex_ni
190 #endif
191 #ifndef FEAT_GUI
192 # define ex_gui			ex_nogui
193 static void	ex_nogui __ARGS((exarg_T *eap));
194 #endif
195 #if defined(FEAT_GUI_W32) && defined(FEAT_MENU) && defined(FEAT_TEAROFF)
196 static void	ex_tearoff __ARGS((exarg_T *eap));
197 #else
198 # define ex_tearoff		ex_ni
199 #endif
200 #if (defined(FEAT_GUI_MSWIN) || defined(FEAT_GUI_KDE) || defined(FEAT_GUI_GTK)) && defined(FEAT_MENU)
201 static void	ex_popup __ARGS((exarg_T *eap));
202 #else
203 # define ex_popup		ex_ni
204 #endif
205 #ifndef FEAT_GUI_MSWIN
206 # define ex_simalt		ex_ni
207 #endif
208 #if !defined(FEAT_GUI_MSWIN) && !defined(FEAT_GUI_GTK) && !defined(FEAT_GUI_MOTIF) && !defined(FEAT_GUI_KDE)
209 # define gui_mch_find_dialog	ex_ni
210 # define gui_mch_replace_dialog ex_ni
211 #endif
212 #if !defined(FEAT_GUI_GTK) && !defined(FEAT_GUI_KDE)
213 # define ex_helpfind		ex_ni
214 #endif
215 #ifndef FEAT_CSCOPE
216 # define do_cscope		ex_ni
217 # define do_scscope		ex_ni
218 # define do_cstag		ex_ni
219 #endif
220 #ifndef FEAT_SYN_HL
221 # define ex_syntax		ex_ni
222 #endif
223 #ifndef FEAT_MZSCHEME
224 # define ex_mzscheme		ex_script_ni
225 # define ex_mzfile		ex_ni
226 #endif
227 #ifndef FEAT_PERL
228 # define ex_perl		ex_script_ni
229 # define ex_perldo		ex_ni
230 #endif
231 #ifndef FEAT_PYTHON
232 # define ex_python		ex_script_ni
233 # define ex_pyfile		ex_ni
234 #endif
235 #ifndef FEAT_TCL
236 # define ex_tcl			ex_script_ni
237 # define ex_tcldo		ex_ni
238 # define ex_tclfile		ex_ni
239 #endif
240 #ifndef FEAT_RUBY
241 # define ex_ruby		ex_script_ni
242 # define ex_rubydo		ex_ni
243 # define ex_rubyfile		ex_ni
244 #endif
245 #ifndef FEAT_SNIFF
246 # define ex_sniff		ex_ni
247 #endif
248 #ifndef FEAT_KEYMAP
249 # define ex_loadkeymap		ex_ni
250 #endif
251 static void	ex_swapname __ARGS((exarg_T *eap));
252 static void	ex_syncbind __ARGS((exarg_T *eap));
253 static void	ex_read __ARGS((exarg_T *eap));
254 static void	ex_cd __ARGS((exarg_T *eap));
255 static void	ex_pwd __ARGS((exarg_T *eap));
256 static void	ex_equal __ARGS((exarg_T *eap));
257 static void	ex_sleep __ARGS((exarg_T *eap));
258 static void	do_exmap __ARGS((exarg_T *eap, int isabbrev));
259 static void	ex_winsize __ARGS((exarg_T *eap));
260 #ifdef FEAT_WINDOWS
261 static void	ex_wincmd __ARGS((exarg_T *eap));
262 #else
263 # define ex_wincmd	    ex_ni
264 #endif
265 #if defined(FEAT_GUI) || defined(UNIX) || defined(VMS) || defined(MSWIN)
266 static void	ex_winpos __ARGS((exarg_T *eap));
267 #else
268 # define ex_winpos	    ex_ni
269 #endif
270 static void	ex_operators __ARGS((exarg_T *eap));
271 static void	ex_put __ARGS((exarg_T *eap));
272 static void	ex_copymove __ARGS((exarg_T *eap));
273 static void	ex_submagic __ARGS((exarg_T *eap));
274 static void	ex_join __ARGS((exarg_T *eap));
275 static void	ex_at __ARGS((exarg_T *eap));
276 static void	ex_bang __ARGS((exarg_T *eap));
277 static void	ex_undo __ARGS((exarg_T *eap));
278 static void	ex_redo __ARGS((exarg_T *eap));
279 static void	ex_redir __ARGS((exarg_T *eap));
280 static void	ex_redraw __ARGS((exarg_T *eap));
281 static void	ex_redrawstatus __ARGS((exarg_T *eap));
282 static void	close_redir __ARGS((void));
283 static void	ex_mkrc __ARGS((exarg_T *eap));
284 static void	ex_mark __ARGS((exarg_T *eap));
285 #ifdef FEAT_USR_CMDS
286 static char_u	*uc_fun_cmd __ARGS((void));
287 #endif
288 #ifdef FEAT_EX_EXTRA
289 static void	ex_normal __ARGS((exarg_T *eap));
290 static void	ex_startinsert __ARGS((exarg_T *eap));
291 static void	ex_stopinsert __ARGS((exarg_T *eap));
292 #else
293 # define ex_normal		ex_ni
294 # define ex_align		ex_ni
295 # define ex_retab		ex_ni
296 # define ex_startinsert		ex_ni
297 # define ex_stopinsert		ex_ni
298 # define ex_helptags		ex_ni
299 #endif
300 #ifdef FEAT_FIND_ID
301 static void	ex_checkpath __ARGS((exarg_T *eap));
302 static void	ex_findpat __ARGS((exarg_T *eap));
303 #else
304 # define ex_findpat		ex_ni
305 # define ex_checkpath		ex_ni
306 #endif
307 #if defined(FEAT_FIND_ID) && defined(FEAT_WINDOWS) && defined(FEAT_QUICKFIX)
308 static void	ex_psearch __ARGS((exarg_T *eap));
309 #else
310 # define ex_psearch		ex_ni
311 #endif
312 static void	ex_tag __ARGS((exarg_T *eap));
313 static void	ex_tag_cmd __ARGS((exarg_T *eap, char_u *name));
314 #ifndef FEAT_EVAL
315 # define ex_scriptnames		ex_ni
316 # define ex_finish		ex_ni
317 # define ex_echo		ex_ni
318 # define ex_echohl		ex_ni
319 # define ex_execute		ex_ni
320 # define ex_call		ex_ni
321 # define ex_if			ex_ni
322 # define ex_endif		ex_ni
323 # define ex_else		ex_ni
324 # define ex_while		ex_ni
325 # define ex_continue		ex_ni
326 # define ex_break		ex_ni
327 # define ex_endwhile		ex_ni
328 # define ex_throw		ex_ni
329 # define ex_try			ex_ni
330 # define ex_catch		ex_ni
331 # define ex_finally		ex_ni
332 # define ex_endtry		ex_ni
333 # define ex_endfunction		ex_ni
334 # define ex_let			ex_ni
335 # define ex_unlet		ex_ni
336 # define ex_function		ex_ni
337 # define ex_delfunction		ex_ni
338 # define ex_return		ex_ni
339 #endif
340 static char_u	*arg_all __ARGS((void));
341 #ifdef FEAT_SESSION
342 static int	makeopens __ARGS((FILE *fd, char_u *dirnow));
343 static int	put_view __ARGS((FILE *fd, win_T *wp, int add_edit, unsigned *flagp));
344 static void	ex_loadview __ARGS((exarg_T *eap));
345 static char_u	*get_view_file __ARGS((int c));
346 #else
347 # define ex_loadview		ex_ni
348 #endif
349 #ifndef FEAT_EVAL
350 # define ex_compiler		ex_ni
351 #endif
352 #ifdef FEAT_VIMINFO
353 static void	ex_viminfo __ARGS((exarg_T *eap));
354 #else
355 # define ex_viminfo		ex_ni
356 #endif
357 static void	ex_behave __ARGS((exarg_T *eap));
358 #ifdef FEAT_AUTOCMD
359 static void	ex_filetype __ARGS((exarg_T *eap));
360 static void	ex_setfiletype  __ARGS((exarg_T *eap));
361 #else
362 # define ex_filetype		ex_ni
363 # define ex_setfiletype		ex_ni
364 #endif
365 #ifndef FEAT_DIFF
366 # define ex_diffoff		ex_ni
367 # define ex_diffpatch		ex_ni
368 # define ex_diffgetput		ex_ni
369 # define ex_diffsplit		ex_ni
370 # define ex_diffthis		ex_ni
371 # define ex_diffupdate		ex_ni
372 #endif
373 static void	ex_digraphs __ARGS((exarg_T *eap));
374 static void	ex_set __ARGS((exarg_T *eap));
375 #if !defined(FEAT_EVAL) || !defined(FEAT_AUTOCMD)
376 # define ex_options		ex_ni
377 #endif
378 #ifdef FEAT_SEARCH_EXTRA
379 static void	ex_nohlsearch __ARGS((exarg_T *eap));
380 static void	ex_match __ARGS((exarg_T *eap));
381 #else
382 # define ex_nohlsearch		ex_ni
383 # define ex_match		ex_ni
384 #endif
385 #ifdef FEAT_CRYPT
386 static void	ex_X __ARGS((exarg_T *eap));
387 #else
388 # define ex_X			ex_ni
389 #endif
390 #ifdef FEAT_FOLDING
391 static void	ex_fold __ARGS((exarg_T *eap));
392 static void	ex_foldopen __ARGS((exarg_T *eap));
393 static void	ex_folddo __ARGS((exarg_T *eap));
394 #else
395 # define ex_fold		ex_ni
396 # define ex_foldopen		ex_ni
397 # define ex_folddo		ex_ni
398 #endif
399 #if !((defined(HAVE_LOCALE_H) || defined(X_LOCALE)) \
400 	&& (defined(FEAT_GETTEXT) || defined(FEAT_MBYTE)))
401 # define ex_language		ex_ni
402 #endif
403 #ifndef FEAT_SIGNS
404 # define ex_sign		ex_ni
405 #endif
406 #ifndef FEAT_SUN_WORKSHOP
407 # define ex_wsverb		ex_ni
408 #endif
409 
410 #ifndef FEAT_EVAL
411 # define ex_debug		ex_ni
412 # define ex_breakadd		ex_ni
413 # define ex_debuggreedy		ex_ni
414 # define ex_breakdel		ex_ni
415 # define ex_breaklist		ex_ni
416 #endif
417 
418 #ifndef FEAT_CMDHIST
419 # define ex_history		ex_ni
420 #endif
421 #ifndef FEAT_JUMPLIST
422 # define ex_jumps		ex_ni
423 # define ex_changes		ex_ni
424 #endif
425 
426 /*
427  * Declare cmdnames[].
428  */
429 #define DO_DECLARE_EXCMD
430 #include "ex_cmds.h"
431 
432 /*
433  * Table used to quickly search for a command, based on its first character.
434  */
435 cmdidx_T cmdidxs[27] =
436 {
437 	CMD_append,
438 	CMD_buffer,
439 	CMD_change,
440 	CMD_delete,
441 	CMD_edit,
442 	CMD_file,
443 	CMD_global,
444 	CMD_help,
445 	CMD_insert,
446 	CMD_join,
447 	CMD_k,
448 	CMD_list,
449 	CMD_move,
450 	CMD_next,
451 	CMD_open,
452 	CMD_print,
453 	CMD_quit,
454 	CMD_read,
455 	CMD_substitute,
456 	CMD_t,
457 	CMD_undo,
458 	CMD_vglobal,
459 	CMD_write,
460 	CMD_xit,
461 	CMD_yank,
462 	CMD_z,
463 	CMD_bang
464 };
465 
466 static char_u dollar_command[2] = {'$', 0};
467 
468 
469 #ifdef FEAT_EVAL
470 /* Struct for storing a line inside a while loop */
471 typedef struct
472 {
473     char_u	*line;		/* command line */
474     linenr_T	lnum;		/* sourcing_lnum of the line */
475 } wcmd_T;
476 
477 /*
478  * Structure used to store info for line position in a while loop.
479  * This is required, because do_one_cmd() may invoke ex_function(), which
480  * reads more lines that may come from the while loop.
481  */
482 struct while_cookie
483 {
484     garray_T	*lines_gap;		/* growarray with line info */
485     int		current_line;		/* last read line from growarray */
486     int		repeating;		/* TRUE when looping a second time */
487     /* When "repeating" is FALSE use "getline" and "cookie" to get lines */
488     char_u	*(*getline) __ARGS((int, void *, int));
489     void	*cookie;
490 };
491 
492 static char_u	*get_while_line __ARGS((int c, void *cookie, int indent));
493 static int	store_while_line __ARGS((garray_T *gap, char_u *line));
494 static void	free_cmdlines __ARGS((garray_T *gap));
495 
496 /* Struct to save a few things while debugging.  Used in do_cmdline() only. */
497 struct dbg_stuff
498 {
499     int		trylevel;
500     int		force_abort;
501     except_T	*caught_stack;
502     char_u	*vv_exception;
503     char_u	*vv_throwpoint;
504     int		did_emsg;
505     int		got_int;
506     int		did_throw;
507     int		need_rethrow;
508     int		check_cstack;
509     except_T	*current_exception;
510 };
511 
512 static void save_dbg_stuff __ARGS((struct dbg_stuff *dsp));
513 static void restore_dbg_stuff __ARGS((struct dbg_stuff *dsp));
514 
515     static void
516 save_dbg_stuff(dsp)
517     struct dbg_stuff *dsp;
518 {
519     dsp->trylevel	= trylevel;		trylevel = 0;
520     dsp->force_abort	= force_abort;		force_abort = FALSE;
521     dsp->caught_stack	= caught_stack;		caught_stack = NULL;
522     dsp->vv_exception	= v_exception(NULL);
523     dsp->vv_throwpoint	= v_throwpoint(NULL);
524 
525     /* Necessary for debugging an inactive ":catch", ":finally", ":endtry" */
526     dsp->did_emsg	= did_emsg;		did_emsg     = FALSE;
527     dsp->got_int	= got_int;		got_int	     = FALSE;
528     dsp->did_throw	= did_throw;		did_throw    = FALSE;
529     dsp->need_rethrow	= need_rethrow;		need_rethrow = FALSE;
530     dsp->check_cstack	= check_cstack;		check_cstack = FALSE;
531     dsp->current_exception = current_exception;	current_exception = NULL;
532 }
533 
534     static void
535 restore_dbg_stuff(dsp)
536     struct dbg_stuff *dsp;
537 {
538     suppress_errthrow = FALSE;
539     trylevel = dsp->trylevel;
540     force_abort = dsp->force_abort;
541     caught_stack = dsp->caught_stack;
542     (void)v_exception(dsp->vv_exception);
543     (void)v_throwpoint(dsp->vv_throwpoint);
544     did_emsg = dsp->did_emsg;
545     got_int = dsp->got_int;
546     did_throw = dsp->did_throw;
547     need_rethrow = dsp->need_rethrow;
548     check_cstack = dsp->check_cstack;
549     current_exception = dsp->current_exception;
550 }
551 #endif
552 
553 
554 /*
555  * do_exmode(): Repeatedly get commands for the "Ex" mode, until the ":vi"
556  * command is given.
557  */
558     void
559 do_exmode(improved)
560     int		improved;	    /* TRUE for "improved Ex" mode */
561 {
562     int		save_msg_scroll;
563     int		prev_msg_row;
564     linenr_T	prev_line;
565 
566     save_msg_scroll = msg_scroll;
567     ++RedrawingDisabled;	    /* don't redisplay the window */
568     ++no_wait_return;		    /* don't wait for return */
569     if (improved)
570 	exmode_active = EXMODE_VIM;
571     else
572     {
573 	settmode(TMODE_COOK);
574 	exmode_active = EXMODE_NORMAL;
575     }
576 
577     State = NORMAL;
578 #ifdef FEAT_GUI
579     /* Ignore scrollbar and mouse events in Ex mode */
580     ++hold_gui_events;
581 #endif
582 #ifdef FEAT_SNIFF
583     want_sniff_request = 0;    /* No K_SNIFF wanted */
584 #endif
585 
586     MSG(_("Entering Ex mode.  Type \"visual\" to go to Normal mode."));
587     while (exmode_active)
588     {
589 	msg_scroll = TRUE;
590 	need_wait_return = FALSE;
591 	ex_pressedreturn = FALSE;
592 	ex_no_reprint = FALSE;
593 	prev_msg_row = msg_row;
594 	prev_line = curwin->w_cursor.lnum;
595 #ifdef FEAT_SNIFF
596 	ProcessSniffRequests();
597 #endif
598 	if (improved)
599 	{
600 	    cmdline_row = msg_row;
601 	    do_cmdline(NULL, getexline, NULL, 0);
602 	}
603 	else
604 	    do_cmdline(NULL, getexmodeline, NULL, DOCMD_NOWAIT);
605 	lines_left = Rows - 1;
606 
607 	if (prev_line != curwin->w_cursor.lnum && !ex_no_reprint)
608 	{
609 	    if (ex_pressedreturn)
610 	    {
611 		/* go up one line, to overwrite the ":<CR>" line, so the
612 		 * output doensn't contain empty lines. */
613 		msg_row = prev_msg_row;
614 		if (prev_msg_row == Rows - 1)
615 		    msg_row--;
616 	    }
617 	    msg_col = 0;
618 	    print_line_no_prefix(curwin->w_cursor.lnum, FALSE);
619 	    msg_clr_eos();
620 	}
621 	else if (ex_pressedreturn)	/* must be at EOF */
622 	    EMSG(_("E501: At end-of-file"));
623     }
624 
625 #ifdef FEAT_GUI
626     --hold_gui_events;
627 #endif
628     if (!improved)
629 	settmode(TMODE_RAW);
630     --RedrawingDisabled;
631     --no_wait_return;
632     update_screen(CLEAR);
633     need_wait_return = FALSE;
634     msg_scroll = save_msg_scroll;
635 }
636 
637 /*
638  * Execute a simple command line.  Used for translated commands like "*".
639  */
640     int
641 do_cmdline_cmd(cmd)
642     char_u	*cmd;
643 {
644     return do_cmdline(cmd, NULL, NULL,
645 				   DOCMD_VERBOSE|DOCMD_NOWAIT|DOCMD_KEYTYPED);
646 }
647 
648 /*
649  * do_cmdline(): execute one Ex command line
650  *
651  * 1. Execute "cmdline" when it is not NULL.
652  *    If "cmdline" is NULL, or more lines are needed, getline() is used.
653  * 2. Split up in parts separated with '|'.
654  *
655  * This function can be called recursively!
656  *
657  * flags:
658  * DOCMD_VERBOSE  - The command will be included in the error message.
659  * DOCMD_NOWAIT   - Don't call wait_return() and friends.
660  * DOCMD_REPEAT   - Repeat execution until getline() returns NULL.
661  * DOCMD_KEYTYPED - Don't reset KeyTyped.
662  * DOCMD_EXCRESET - Reset the exception environment (used for debugging).
663  * DOCMD_KEEPLINE - Store first typed line (for repeating with ".").
664  *
665  * return FAIL if cmdline could not be executed, OK otherwise
666  */
667     int
668 do_cmdline(cmdline, getline, cookie, flags)
669     char_u	*cmdline;
670     char_u	*(*getline) __ARGS((int, void *, int));
671     void	*cookie;		/* argument for getline() */
672     int		flags;
673 {
674     char_u	*next_cmdline;		/* next cmd to execute */
675     char_u	*cmdline_copy = NULL;	/* copy of cmd line */
676     int		used_getline = FALSE;	/* used "getline" to obtain command */
677     static int	recursive = 0;		/* recursive depth */
678     int		msg_didout_before_start = 0;
679     int		count = 0;		/* line number count */
680     int		did_inc = FALSE;	/* incremented RedrawingDisabled */
681     int		retval = OK;
682 #ifdef FEAT_EVAL
683     struct condstack cstack;		/* conditional stack */
684     garray_T	lines_ga;		/* keep lines for ":while" */
685     int		current_line = 0;	/* active line in lines_ga */
686     char_u	*fname = NULL;		/* function or script name */
687     linenr_T	*breakpoint = NULL;	/* ptr to breakpoint field in cookie */
688     int		*dbg_tick = NULL;	/* ptr to dbg_tick field in cookie */
689     struct dbg_stuff debug_saved;	/* saved things for debug mode */
690     int		initial_trylevel;
691     struct msglist	**saved_msg_list = NULL;
692     struct msglist	*private_msg_list;
693 
694     /* "getline" and "cookie" passed to do_one_cmd() */
695     char_u	*(*cmd_getline) __ARGS((int, void *, int));
696     void	*cmd_cookie;
697     struct while_cookie cmd_while_cookie;
698     void	*real_cookie;
699 #else
700 # define cmd_getline getline
701 # define cmd_cookie cookie
702 #endif
703     static int	call_depth = 0;		/* recursiveness */
704 
705 #ifdef FEAT_EVAL
706     /* For every pair of do_cmdline()/do_one_cmd() calls, use an extra memory
707      * location for storing error messages to be converted to an exception.
708      * This ensures that the do_errthrow() call in do_one_cmd() does not combine
709      * the messages stored by an earlier invocation of do_one_cmd() with the
710      * command name of the later one.  This would happen when BufWritePost
711      * autocommands are executed after a write error. */
712     saved_msg_list = msg_list;
713     msg_list = &private_msg_list;
714     private_msg_list = NULL;
715 #endif
716 
717     /* It's possible to create an endless loop with ":execute", catch that
718      * here.  The value of 200 allows nested function calls, ":source", etc. */
719     if (call_depth == 200)
720     {
721 	EMSG(_("E169: Command too recursive"));
722 #ifdef FEAT_EVAL
723 	/* When converting to an exception, we do not include the command name
724 	 * since this is not an error of the specific command. */
725 	do_errthrow((struct condstack *)NULL, (char_u *)NULL);
726 	msg_list = saved_msg_list;
727 #endif
728 	return FAIL;
729     }
730     ++call_depth;
731 
732 #ifdef FEAT_EVAL
733     cstack.cs_idx = -1;
734     cstack.cs_whilelevel = 0;
735     cstack.cs_trylevel = 0;
736     cstack.cs_emsg_silent_list = NULL;
737     cstack.cs_had_while = FALSE;
738     cstack.cs_had_endwhile = FALSE;
739     cstack.cs_had_continue = FALSE;
740     cstack.cs_had_finally = FALSE;
741     ga_init2(&lines_ga, (int)sizeof(wcmd_T), 10);
742 
743     real_cookie = getline_cookie(getline, cookie);
744 
745     /* Inside a function use a higher nesting level. */
746     if (getline_equal(getline, cookie, get_func_line)
747 			       && ex_nesting_level == func_level(real_cookie))
748 	++ex_nesting_level;
749 
750     /* Get the function or script name and the address where the next breakpoint
751      * line and the debug tick for a function or script are stored. */
752     if (getline_equal(getline, cookie, get_func_line))
753     {
754 	fname = func_name(real_cookie);
755 	breakpoint = func_breakpoint(real_cookie);
756 	dbg_tick = func_dbg_tick(real_cookie);
757     }
758     else if (getline_equal(getline, cookie, getsourceline))
759     {
760 	fname = sourcing_name;
761 	breakpoint = source_breakpoint(real_cookie);
762 	dbg_tick = source_dbg_tick(real_cookie);
763     }
764 
765     /*
766      * Initialize "force_abort"  and "suppress_errthrow" at the top level.
767      */
768     if (!recursive)
769     {
770 	force_abort = FALSE;
771 	suppress_errthrow = FALSE;
772     }
773 
774     /*
775      * If requested, store and reset the global values controlling the
776      * exception handling (used when debugging).
777      */
778     else if (flags & DOCMD_EXCRESET)
779 	save_dbg_stuff(&debug_saved);
780 
781     initial_trylevel = trylevel;
782 
783     /*
784      * "did_throw" will be set to TRUE when an exception is being thrown.
785      */
786     did_throw = FALSE;
787 #endif
788     /*
789      * "did_emsg" will be set to TRUE when emsg() is used, in which case we
790      * cancel the whole command line, and any if/endif while/endwhile loop.
791      * If force_abort is set, we cancel everything.
792      */
793     did_emsg = FALSE;
794 
795     /*
796      * KeyTyped is only set when calling vgetc().  Reset it here when not
797      * calling vgetc() (sourced command lines).
798      */
799     if (!(flags & DOCMD_KEYTYPED) && !getline_equal(getline, cookie, getexline))
800 	KeyTyped = FALSE;
801 
802     /*
803      * Continue executing command lines:
804      * - when inside an ":if" or ":while"
805      * - for multiple commands on one line, separated with '|'
806      * - when repeating until there are no more lines (for ":source")
807      */
808     next_cmdline = cmdline;
809     do
810     {
811 	/* stop skipping cmds for an error msg after all endifs and endwhiles */
812 	if (next_cmdline == NULL
813 #ifdef FEAT_EVAL
814 		&& !force_abort
815 		&& cstack.cs_idx < 0
816 		&& !(getline_equal(getline, cookie, get_func_line)
817 					       && func_has_abort(real_cookie))
818 #endif
819 							)
820 	    did_emsg = FALSE;
821 
822 	/*
823 	 * 1. If repeating a line with ":while", get a line from lines_ga.
824 	 * 2. If no line given: Get an allocated line with getline().
825 	 * 3. If a line is given: Make a copy, so we can mess with it.
826 	 */
827 
828 #ifdef FEAT_EVAL
829 	/* 1. If repeating, get a previous line from lines_ga. */
830 	if (cstack.cs_whilelevel && current_line < lines_ga.ga_len)
831 	{
832 	    /* Each '|' separated command is stored separately in lines_ga, to
833 	     * be able to jump to it.  Don't use next_cmdline now. */
834 	    vim_free(cmdline_copy);
835 	    cmdline_copy = NULL;
836 
837 	    /* Check if a function has returned or, unless it has an unclosed
838 	     * try conditional, aborted. */
839 	    if (getline_equal(getline, cookie, get_func_line)
840 					       && func_has_ended(real_cookie))
841 	    {
842 		retval = FAIL;
843 		break;
844 	    }
845 
846 	    /* Check if a sourced file hit a ":finish" command. */
847 	    if (source_finished(getline, cookie))
848 	    {
849 		retval = FAIL;
850 		break;
851 	    }
852 
853 	    /* If breakpoints have been added/deleted need to check for it. */
854 	    if (breakpoint != NULL && dbg_tick != NULL
855 						   && *dbg_tick != debug_tick)
856 	    {
857 		*breakpoint = dbg_find_breakpoint(
858 				getline_equal(getline, cookie, getsourceline),
859 							fname, sourcing_lnum);
860 		*dbg_tick = debug_tick;
861 	    }
862 
863 	    next_cmdline = ((wcmd_T *)(lines_ga.ga_data))[current_line].line;
864 	    sourcing_lnum = ((wcmd_T *)(lines_ga.ga_data))[current_line].lnum;
865 
866 	    /* Did we encounter a breakpoint? */
867 	    if (breakpoint != NULL && *breakpoint != 0
868 					      && *breakpoint <= sourcing_lnum)
869 	    {
870 		dbg_breakpoint(fname, sourcing_lnum);
871 		/* Find next breakpoint. */
872 		*breakpoint = dbg_find_breakpoint(
873 				getline_equal(getline, cookie, getsourceline),
874 							fname, sourcing_lnum);
875 		*dbg_tick = debug_tick;
876 	    }
877 	}
878 
879 	if (cstack.cs_whilelevel)
880 	{
881 	    /* Inside a while loop we need to store the lines and use them
882 	     * again.  Pass a different "getline" function to do_one_cmd()
883 	     * below, so that it stores lines in or reads them from
884 	     * "lines_ga".  Makes it possible to define a function inside a
885 	     * while loop. */
886 	    cmd_getline = get_while_line;
887 	    cmd_cookie = (void *)&cmd_while_cookie;
888 	    cmd_while_cookie.lines_gap = &lines_ga;
889 	    cmd_while_cookie.current_line = current_line;
890 	    cmd_while_cookie.getline = getline;
891 	    cmd_while_cookie.cookie = cookie;
892 	    cmd_while_cookie.repeating = (current_line < lines_ga.ga_len);
893 	}
894 	else
895 	{
896 	    cmd_getline = getline;
897 	    cmd_cookie = cookie;
898 	}
899 #endif
900 
901 	/* 2. If no line given, get an allocated line with getline(). */
902 	if (next_cmdline == NULL)
903 	{
904 	    /*
905 	     * Need to set msg_didout for the first line after an ":if",
906 	     * otherwise the ":if" will be overwritten.
907 	     */
908 	    if (count == 1 && getline_equal(getline, cookie, getexline))
909 		msg_didout = TRUE;
910 	    if (getline == NULL || (next_cmdline = getline(':', cookie,
911 #ifdef FEAT_EVAL
912 		    cstack.cs_idx < 0 ? 0 : (cstack.cs_idx + 1) * 2
913 #else
914 		    0
915 #endif
916 			    )) == NULL)
917 	    {
918 		/* Don't call wait_return for aborted command line.  The NULL
919 		 * returned for the end of a sourced file or executed function
920 		 * doesn't do this. */
921 		if (KeyTyped && !(flags & DOCMD_REPEAT))
922 		    need_wait_return = FALSE;
923 		retval = FAIL;
924 		break;
925 	    }
926 	    used_getline = TRUE;
927 
928 	    /*
929 	     * Keep the first typed line.  Clear it when more lines are typed.
930 	     */
931 	    if (flags & DOCMD_KEEPLINE)
932 	    {
933 		vim_free(repeat_cmdline);
934 		if (count == 0)
935 		    repeat_cmdline = vim_strsave(next_cmdline);
936 		else
937 		    repeat_cmdline = NULL;
938 	    }
939 	}
940 
941 	/* 3. Make a copy of the command so we can mess with it. */
942 	else if (cmdline_copy == NULL)
943 	{
944 	    next_cmdline = vim_strsave(next_cmdline);
945 	    if (next_cmdline == NULL)
946 	    {
947 		EMSG(_(e_outofmem));
948 		retval = FAIL;
949 		break;
950 	    }
951 	}
952 	cmdline_copy = next_cmdline;
953 
954 #ifdef FEAT_EVAL
955 	/*
956 	 * Save the current line when inside a ":while", and when the command
957 	 * looks like a ":while", because we may need it later.
958 	 * When there is a '|' and another command, it is stored separately,
959 	 * because we need to be able to jump back to it from an :endwhile.
960 	 */
961 	if (	   current_line == lines_ga.ga_len
962 		&& (cstack.cs_whilelevel || has_while_cmd(next_cmdline)))
963 	{
964 	    if (store_while_line(&lines_ga, next_cmdline) == FAIL)
965 	    {
966 		retval = FAIL;
967 		break;
968 	    }
969 	}
970 	did_endif = FALSE;
971 #endif
972 
973 	if (count++ == 0)
974 	{
975 	    /*
976 	     * All output from the commands is put below each other, without
977 	     * waiting for a return. Don't do this when executing commands
978 	     * from a script or when being called recursive (e.g. for ":e
979 	     * +command file").
980 	     */
981 	    if (!(flags & DOCMD_NOWAIT) && !recursive)
982 	    {
983 		msg_didout_before_start = msg_didout;
984 		msg_didany = FALSE; /* no output yet */
985 		msg_start();
986 		msg_scroll = TRUE;  /* put messages below each other */
987 		++no_wait_return;   /* dont wait for return until finished */
988 		++RedrawingDisabled;
989 		did_inc = TRUE;
990 	    }
991 	}
992 
993 	if (p_verbose >= 15 && sourcing_name != NULL)
994 	{
995 	    int	c = -1;
996 
997 	    ++no_wait_return;
998 	    msg_scroll = TRUE;	    /* always scroll up, don't overwrite */
999 	    /* Truncate long lines, smsg() can't handle that. */
1000 	    if (STRLEN(cmdline_copy) > 200)
1001 	    {
1002 		c = cmdline_copy[200];
1003 		cmdline_copy[200] = NUL;
1004 	    }
1005 	    smsg((char_u *)_("line %ld: %s"),
1006 					   (long)sourcing_lnum, cmdline_copy);
1007 	    msg_puts((char_u *)"\n");   /* don't overwrite this either */
1008 	    if (c >= 0)
1009 		cmdline_copy[200] = c;
1010 	    cmdline_row = msg_row;
1011 	    --no_wait_return;
1012 	}
1013 
1014 	/*
1015 	 * 2. Execute one '|' separated command.
1016 	 *    do_one_cmd() will return NULL if there is no trailing '|'.
1017 	 *    "cmdline_copy" can change, e.g. for '%' and '#' expansion.
1018 	 */
1019 	++recursive;
1020 	next_cmdline = do_one_cmd(&cmdline_copy, flags & DOCMD_VERBOSE,
1021 #ifdef FEAT_EVAL
1022 				&cstack,
1023 #endif
1024 				cmd_getline, cmd_cookie);
1025 	--recursive;
1026 
1027 #ifdef FEAT_EVAL
1028 	if (cmd_cookie == (void *)&cmd_while_cookie)
1029 	    /* Use "current_line" from "cmd_while_cookie", it may have been
1030 	     * incremented when defining a function. */
1031 	    current_line = cmd_while_cookie.current_line;
1032 #endif
1033 
1034 	if (next_cmdline == NULL)
1035 	{
1036 	    vim_free(cmdline_copy);
1037 	    cmdline_copy = NULL;
1038 #ifdef FEAT_CMDHIST
1039 	    /*
1040 	     * If the command was typed, remember it for the ':' register.
1041 	     * Do this AFTER executing the command to make :@: work.
1042 	     */
1043 	    if (getline_equal(getline, cookie, getexline)
1044 						  && new_last_cmdline != NULL)
1045 	    {
1046 		vim_free(last_cmdline);
1047 		last_cmdline = new_last_cmdline;
1048 		new_last_cmdline = NULL;
1049 	    }
1050 #endif
1051 	}
1052 	else
1053 	{
1054 	    /* need to copy the command after the '|' to cmdline_copy, for the
1055 	     * next do_one_cmd() */
1056 	    mch_memmove(cmdline_copy, next_cmdline, STRLEN(next_cmdline) + 1);
1057 	    next_cmdline = cmdline_copy;
1058 	}
1059 
1060 
1061 #ifdef FEAT_EVAL
1062 	/* reset did_emsg for a function that is not aborted by an error */
1063 	if (did_emsg && !force_abort
1064 		&& getline_equal(getline, cookie, get_func_line)
1065 					      && !func_has_abort(real_cookie))
1066 	    did_emsg = FALSE;
1067 
1068 	if (cstack.cs_whilelevel)
1069 	{
1070 	    ++current_line;
1071 
1072 	    /*
1073 	     * An ":endwhile" and ":continue" is handled here.
1074 	     * If we were executing commands, jump back to the ":while".
1075 	     * If we were not executing commands, decrement whilelevel.
1076 	     */
1077 	    if (cstack.cs_had_endwhile || cstack.cs_had_continue)
1078 	    {
1079 		if (cstack.cs_had_endwhile)
1080 		    cstack.cs_had_endwhile = FALSE;
1081 		else
1082 		    cstack.cs_had_continue = FALSE;
1083 
1084 		/* Jump back to the matching ":while".  Be careful not to use
1085 		 * a cs_line[] from an entry that isn't a ":while": It would
1086 		 * make "current_line" invalid and can cause a crash. */
1087 		if (!did_emsg && !got_int && !did_throw
1088 			&& cstack.cs_idx >= 0
1089 			&& (cstack.cs_flags[cstack.cs_idx] & CSF_WHILE)
1090 			&& cstack.cs_line[cstack.cs_idx] >= 0
1091 			&& (cstack.cs_flags[cstack.cs_idx] & CSF_ACTIVE))
1092 		{
1093 		    current_line = cstack.cs_line[cstack.cs_idx];
1094 		    cstack.cs_had_while = TRUE;	/* note we jumped there */
1095 		    line_breakcheck();		/* check if CTRL-C typed */
1096 
1097 		    /* Check for the next breakpoint at or after the ":while".*/
1098 		    if (breakpoint != NULL)
1099 		    {
1100 			*breakpoint = dbg_find_breakpoint(
1101 				getline_equal(getline, cookie, getsourceline),
1102 									fname,
1103 			   ((wcmd_T *)lines_ga.ga_data)[current_line].lnum-1);
1104 			*dbg_tick = debug_tick;
1105 		    }
1106 		}
1107 		else /* can only get here with ":endwhile" */
1108 		{
1109 		    --cstack.cs_whilelevel;
1110 		    if (cstack.cs_idx >= 0)
1111 			--cstack.cs_idx;
1112 		}
1113 	    }
1114 
1115 	    /*
1116 	     * For a ":while" we need to remember the line number.
1117 	     */
1118 	    else if (cstack.cs_had_while)
1119 	    {
1120 		cstack.cs_had_while = FALSE;
1121 		cstack.cs_line[cstack.cs_idx] = current_line - 1;
1122 	    }
1123 	}
1124 
1125 	/*
1126 	 * When not inside any ":while" loop, clear remembered lines.
1127 	 */
1128 	if (!cstack.cs_whilelevel)
1129 	{
1130 	    if (lines_ga.ga_len > 0)
1131 	    {
1132 		sourcing_lnum =
1133 		       ((wcmd_T *)lines_ga.ga_data)[lines_ga.ga_len - 1].lnum;
1134 		free_cmdlines(&lines_ga);
1135 	    }
1136 	    current_line = 0;
1137 	}
1138 
1139 	/*
1140 	 * A ":finally" makes did_emsg, got_int, and did_throw pending for being
1141 	 * restored at the ":endtry".  Reset them here and set the ACTIVE and
1142 	 * FINALLY flags, so that the finally clause gets executed.  This
1143 	 * includes the case where a missing ":endif" or ":endwhile" was
1144 	 * detected by the ":finally" itself.
1145 	 */
1146 	if (cstack.cs_had_finally)
1147 	{
1148 	    cstack.cs_had_finally = FALSE;
1149 	    report_make_pending(cstack.cs_pending[cstack.cs_idx] &
1150 		    (CSTP_ERROR | CSTP_INTERRUPT | CSTP_THROW),
1151 		    did_throw ? (void *)current_exception : NULL);
1152 	    did_emsg = got_int = did_throw = FALSE;
1153 	    cstack.cs_flags[cstack.cs_idx] |= CSF_ACTIVE | CSF_FINALLY;
1154 	}
1155 
1156 	/* Update global "trylevel" for recursive calls to do_cmdline() from
1157 	 * within this loop. */
1158 	trylevel = initial_trylevel + cstack.cs_trylevel;
1159 
1160 	/*
1161 	 * If the outermost try conditional (accross function calls and sourced
1162 	 * files) is aborted because of an error, an interrupt, or an uncaught
1163 	 * exception, cancel everything.  If it is left normally, reset
1164 	 * force_abort to get the non-EH compatible abortion behavior for
1165 	 * the rest of the script.
1166 	 */
1167 	if (trylevel == 0 && !did_emsg && !got_int && !did_throw)
1168 	    force_abort = FALSE;
1169 
1170 	/* Convert an interrupt to an exception if appropriate. */
1171 	(void)do_intthrow(&cstack);
1172 #endif /* FEAT_EVAL */
1173 
1174     }
1175     /*
1176      * Continue executing command lines when:
1177      * - no CTRL-C typed, no aborting error, no exception thrown or try
1178      *   conditionals need to be checked for executing finally clauses or
1179      *   catching an interrupt exception
1180      * - didn't get an error message or lines are not typed
1181      * - there is a command after '|', inside a :if, :while, or :try, or
1182      *   looping for ":source" command or function call.
1183      */
1184     while (!((got_int
1185 #ifdef FEAT_EVAL
1186 		    || (did_emsg && force_abort) || did_throw
1187 #endif
1188 	     )
1189 #ifdef FEAT_EVAL
1190 		&& cstack.cs_trylevel == 0
1191 #endif
1192 	    )
1193 	    && !(did_emsg && used_getline
1194 			  && (getline_equal(getline, cookie, getexmodeline)
1195 				|| getline_equal(getline, cookie, getexline)))
1196 	    && (next_cmdline != NULL
1197 #ifdef FEAT_EVAL
1198 			|| cstack.cs_idx >= 0
1199 #endif
1200 			|| (flags & DOCMD_REPEAT)));
1201 
1202     vim_free(cmdline_copy);
1203 #ifdef FEAT_EVAL
1204     free_cmdlines(&lines_ga);
1205     ga_clear(&lines_ga);
1206 
1207     if (cstack.cs_idx >= 0)
1208     {
1209 	/*
1210 	 * If a sourced file or executed function ran to its end, report the
1211 	 * unclosed conditional.
1212 	 */
1213 	if (!got_int && !did_throw
1214 		&& ((getline_equal(getline, cookie, getsourceline)
1215 			&& !source_finished(getline, cookie))
1216 		    || (getline_equal(getline, cookie, get_func_line)
1217 					    && !func_has_ended(real_cookie))))
1218 	{
1219 	    if (cstack.cs_flags[cstack.cs_idx] & CSF_TRY)
1220 		EMSG(_(e_endtry));
1221 	    else if (cstack.cs_flags[cstack.cs_idx] & CSF_WHILE)
1222 		EMSG(_(e_endwhile));
1223 	    else
1224 		EMSG(_(e_endif));
1225 	}
1226 
1227 	/*
1228 	 * Reset "trylevel" in case of a ":finish" or ":return" or a missing
1229 	 * ":endtry" in a sourced file or executed function.  If the try
1230 	 * conditional is in its finally clause, ignore anything pending.
1231 	 * If it is in a catch clause, finish the caught exception.
1232 	 */
1233 	do
1234 	    cstack.cs_idx = cleanup_conditionals(&cstack, 0, TRUE);
1235 	while (--cstack.cs_idx >= 0);
1236 	trylevel = initial_trylevel;
1237     }
1238 
1239     /* If a missing ":endtry", ":endwhile", or ":endif" or a memory lack
1240      * was reported above and the error message is to be converted to an
1241      * exception, do this now after rewinding the cstack. */
1242     do_errthrow(&cstack, getline_equal(getline, cookie, get_func_line)
1243 				  ? (char_u *)"endfunction" : (char_u *)NULL);
1244 
1245     if (trylevel == 0)
1246     {
1247 	/*
1248 	 * When an exception is being thrown out of the outermost try
1249 	 * conditional, discard the uncaught exception, disable the conversion
1250 	 * of interrupts or errors to exceptions, and ensure that no more
1251 	 * commands are executed.
1252 	 */
1253 	if (did_throw)
1254 	{
1255 	    void	*p = NULL;
1256 	    char_u	*saved_sourcing_name;
1257 	    int		saved_sourcing_lnum;
1258 	    struct msglist	*messages = NULL, *next;
1259 
1260 	    /*
1261 	     * If the uncaught exception is a user exception, report it as an
1262 	     * error.  If it is an error exception, display the saved error
1263 	     * message now.  For an interrupt exception, do nothing; the
1264 	     * interrupt message is given elsewhere.
1265 	     */
1266 	    switch (current_exception->type)
1267 	    {
1268 		case ET_USER:
1269 		    sprintf((char *)IObuff, _("E605: Exception not caught: %s"),
1270 			    current_exception->value);
1271 		    p = vim_strsave(IObuff);
1272 		    break;
1273 		case ET_ERROR:
1274 		    messages = current_exception->messages;
1275 		    current_exception->messages = NULL;
1276 		    break;
1277 		case ET_INTERRUPT:
1278 		    break;
1279 		default:
1280 		    p = vim_strsave((char_u *)_(e_internal));
1281 	    }
1282 
1283 	    saved_sourcing_name = sourcing_name;
1284 	    saved_sourcing_lnum = sourcing_lnum;
1285 	    sourcing_name = current_exception->throw_name;
1286 	    sourcing_lnum = current_exception->throw_lnum;
1287 	    current_exception->throw_name = NULL;
1288 
1289 	    discard_current_exception();	/* uses IObuff if 'verbose' */
1290 	    suppress_errthrow = TRUE;
1291 	    force_abort = TRUE;
1292 
1293 	    if (messages != NULL)
1294 	    {
1295 		do
1296 		{
1297 		    next = messages->next;
1298 		    emsg(messages->msg);
1299 		    vim_free(messages->msg);
1300 		    vim_free(messages);
1301 		    messages = next;
1302 		}
1303 		while (messages != NULL);
1304 	    }
1305 	    else if (p != NULL)
1306 	    {
1307 		emsg(p);
1308 		vim_free(p);
1309 	    }
1310 	    vim_free(sourcing_name);
1311 	    sourcing_name = saved_sourcing_name;
1312 	    sourcing_lnum = saved_sourcing_lnum;
1313 	}
1314 
1315 	/*
1316 	 * On an interrupt or an aborting error not converted to an exception,
1317 	 * disable the conversion of errors to exceptions.  (Interrupts are not
1318 	 * converted any more, here.) This enables also the interrupt message
1319 	 * when force_abort is set and did_emsg unset in case of an interrupt
1320 	 * from a finally clause after an error.
1321 	 */
1322 	else if (got_int || (did_emsg && force_abort))
1323 	    suppress_errthrow = TRUE;
1324     }
1325 
1326     /*
1327      * The current cstack will be freed when do_cmdline() returns.  An uncaught
1328      * exception will have to be rethrown in the previous cstack.  If a function
1329      * has just returned or a script file was just finished and the previous
1330      * cstack belongs to the same function or, respectively, script file, it
1331      * will have to be checked for finally clauses to be executed due to the
1332      * ":return" or ":finish".  This is done in do_one_cmd().
1333      */
1334     if (did_throw)
1335 	need_rethrow = TRUE;
1336     if ((getline_equal(getline, cookie, getsourceline)
1337 		&& ex_nesting_level > source_level(real_cookie))
1338 	    || (getline_equal(getline, cookie, get_func_line)
1339 		&& ex_nesting_level > func_level(real_cookie) + 1))
1340     {
1341 	if (!did_throw)
1342 	    check_cstack = TRUE;
1343     }
1344     else
1345     {
1346 	/* When leaving a function, reduce nesting level. */
1347 	if (getline_equal(getline, cookie, get_func_line))
1348 	    --ex_nesting_level;
1349 	/*
1350 	 * Go to debug mode when returning from a function in which we are
1351 	 * single-stepping.
1352 	 */
1353 	if ((getline_equal(getline, cookie, getsourceline)
1354 		    || getline_equal(getline, cookie, get_func_line))
1355 		&& ex_nesting_level + 1 <= debug_break_level)
1356 	    do_debug(getline_equal(getline, cookie, getsourceline)
1357 		    ? (char_u *)_("End of sourced file")
1358 		    : (char_u *)_("End of function"));
1359     }
1360 
1361     /*
1362      * Restore the exception environment (done after returning from the
1363      * debugger).
1364      */
1365     if (flags & DOCMD_EXCRESET)
1366 	restore_dbg_stuff(&debug_saved);
1367 
1368     msg_list = saved_msg_list;
1369 #endif /* FEAT_EVAL */
1370 
1371     /*
1372      * If there was too much output to fit on the command line, ask the user to
1373      * hit return before redrawing the screen. With the ":global" command we do
1374      * this only once after the command is finished.
1375      */
1376     if (did_inc)
1377     {
1378 	--RedrawingDisabled;
1379 	--no_wait_return;
1380 	msg_scroll = FALSE;
1381 
1382 	/*
1383 	 * When just finished an ":if"-":else" which was typed, no need to
1384 	 * wait for hit-return.  Also for an error situation.
1385 	 */
1386 	if (retval == FAIL
1387 #ifdef FEAT_EVAL
1388 		|| (did_endif && KeyTyped && !did_emsg)
1389 #endif
1390 					    )
1391 	{
1392 	    need_wait_return = FALSE;
1393 	    msg_didany = FALSE;		/* don't wait when restarting edit */
1394 	}
1395 	else if (need_wait_return)
1396 	{
1397 	    /*
1398 	     * The msg_start() above clears msg_didout. The wait_return we do
1399 	     * here should not overwrite the command that may be shown before
1400 	     * doing that.
1401 	     */
1402 	    msg_didout |= msg_didout_before_start;
1403 	    wait_return(FALSE);
1404 	}
1405     }
1406 
1407 #ifndef FEAT_EVAL
1408     /*
1409      * Reset if_level, in case a sourced script file contains more ":if" than
1410      * ":endif" (could be ":if x | foo | endif").
1411      */
1412     if_level = 0;
1413 #endif
1414 
1415     --call_depth;
1416     return retval;
1417 }
1418 
1419 #ifdef FEAT_EVAL
1420 /*
1421  * Obtain a line when inside a ":while" loop.
1422  */
1423     static char_u *
1424 get_while_line(c, cookie, indent)
1425     int		c;
1426     void	*cookie;
1427     int		indent;
1428 {
1429     struct while_cookie *cp = (struct while_cookie *)cookie;
1430     wcmd_T		*wp;
1431     char_u		*line;
1432 
1433     if (cp->current_line + 1 >= cp->lines_gap->ga_len)
1434     {
1435 	if (cp->repeating)
1436 	    return NULL;	/* trying to read past the ":endwhile" */
1437 
1438 	/* First time inside the ":while": get line normally. */
1439 	if (cp->getline == NULL)
1440 	    line = getcmdline(c, 0L, indent);
1441 	else
1442 	    line = cp->getline(c, cp->cookie, indent);
1443 	if (store_while_line(cp->lines_gap, line) == OK)
1444 	    ++cp->current_line;
1445 
1446 	return line;
1447     }
1448 
1449     KeyTyped = FALSE;
1450     ++cp->current_line;
1451     wp = (wcmd_T *)(cp->lines_gap->ga_data) + cp->current_line;
1452     sourcing_lnum = wp->lnum;
1453     return vim_strsave(wp->line);
1454 }
1455 
1456 /*
1457  * Store a line in "gap" so that a ":while" loop can execute it again.
1458  */
1459     static int
1460 store_while_line(gap, line)
1461     garray_T	*gap;
1462     char_u	*line;
1463 {
1464     if (ga_grow(gap, 1) == FAIL)
1465 	return FAIL;
1466     ((wcmd_T *)(gap->ga_data))[gap->ga_len].line = vim_strsave(line);
1467     ((wcmd_T *)(gap->ga_data))[gap->ga_len].lnum = sourcing_lnum;
1468     ++gap->ga_len;
1469     --gap->ga_room;
1470     return OK;
1471 }
1472 
1473 /*
1474  * Free the lines stored for a ":while" loop.
1475  */
1476     static void
1477 free_cmdlines(gap)
1478     garray_T	*gap;
1479 {
1480     while (gap->ga_len > 0)
1481     {
1482 	vim_free(((wcmd_T *)(gap->ga_data))[gap->ga_len - 1].line);
1483 	--gap->ga_len;
1484 	++gap->ga_room;
1485     }
1486 }
1487 #endif
1488 
1489 /*
1490  * If "getline" is get_while_line(), return TRUE if the getline it uses equals
1491  * "func".  * Otherwise return TRUE when "getline" equals "func".
1492  */
1493 /*ARGSUSED*/
1494     int
1495 getline_equal(getline, cookie, func)
1496     char_u	*(*getline) __ARGS((int, void *, int));
1497     void	*cookie;		/* argument for getline() */
1498     char_u	*(*func) __ARGS((int, void *, int));
1499 {
1500 #ifdef FEAT_EVAL
1501     char_u		*(*gp) __ARGS((int, void *, int));
1502     struct while_cookie *cp;
1503 
1504     /* When "getline" is "get_while_line()" use the "cookie" to find the
1505      * function that's orignally used to obtain the lines.  This may be nested
1506      * several levels. */
1507     gp = getline;
1508     cp = (struct while_cookie *)cookie;
1509     while (gp == get_while_line)
1510     {
1511 	gp = cp->getline;
1512 	cp = cp->cookie;
1513     }
1514     return gp == func;
1515 #else
1516     return getline == func;
1517 #endif
1518 }
1519 
1520 #if defined(FEAT_EVAL) || defined(FEAT_MBYTE) || defined(PROTO)
1521 /*
1522  * If "getline" is get_while_line(), return the cookie used by the original
1523  * getline function.  Otherwise return "cookie".
1524  */
1525 /*ARGSUSED*/
1526     void *
1527 getline_cookie(getline, cookie)
1528     char_u	*(*getline) __ARGS((int, void *, int));
1529     void	*cookie;		/* argument for getline() */
1530 {
1531 # ifdef FEAT_EVAL
1532     char_u		*(*gp) __ARGS((int, void *, int));
1533     struct while_cookie *cp;
1534 
1535     /* When "getline" is "get_while_line()" use the "cookie" to find the
1536      * cookie that's orignally used to obtain the lines.  This may be nested
1537      * several levels. */
1538     gp = getline;
1539     cp = (struct while_cookie *)cookie;
1540     while (gp == get_while_line)
1541     {
1542 	gp = cp->getline;
1543 	cp = cp->cookie;
1544     }
1545     return cp;
1546 # else
1547     return cookie;
1548 # endif
1549 }
1550 #endif
1551 
1552 /*
1553  * Execute one Ex command.
1554  *
1555  * If 'sourcing' is TRUE, the command will be included in the error message.
1556  *
1557  * 1. skip comment lines and leading space
1558  * 2. handle command modifiers
1559  * 3. parse range
1560  * 4. parse command
1561  * 5. parse arguments
1562  * 6. switch on command name
1563  *
1564  * Note: "getline" can be NULL.
1565  *
1566  * This function may be called recursively!
1567  */
1568 #if (_MSC_VER == 1200)
1569 /*
1570  * Avoid optimisation bug in VC++ version 6.0
1571  */
1572 # pragma optimize( "g", off )
1573 #endif
1574     static char_u *
1575 do_one_cmd(cmdlinep, sourcing,
1576 #ifdef FEAT_EVAL
1577 			    cstack,
1578 #endif
1579 				    getline, cookie)
1580     char_u		**cmdlinep;
1581     int			sourcing;
1582 #ifdef FEAT_EVAL
1583     struct condstack	*cstack;
1584 #endif
1585     char_u		*(*getline) __ARGS((int, void *, int));
1586     void		*cookie;		/* argument for getline() */
1587 {
1588     char_u		*p;
1589     linenr_T		lnum;
1590     long		n;
1591     char_u		*errormsg = NULL;	/* error message */
1592     exarg_T		ea;			/* Ex command arguments */
1593     long		verbose_save = -1;
1594     int			save_msg_scroll = 0;
1595     int			did_silent = 0;
1596     int			did_esilent = 0;
1597 #ifdef HAVE_SANDBOX
1598     int			did_sandbox = FALSE;
1599 #endif
1600     cmdmod_T		save_cmdmod;
1601     int			ni;			/* set when Not Implemented */
1602 
1603     vim_memset(&ea, 0, sizeof(ea));
1604     ea.line1 = 1;
1605     ea.line2 = 1;
1606 #ifdef FEAT_EVAL
1607     ++ex_nesting_level;
1608 #endif
1609 
1610 	/* when not editing the last file :q has to be typed twice */
1611     if (quitmore
1612 #ifdef FEAT_EVAL
1613 	    /* avoid that a function call in 'statusline' does this */
1614 	    && !getline_equal(getline, cookie, get_func_line)
1615 #endif
1616 	    )
1617 	--quitmore;
1618 
1619     /*
1620      * Reset browse, confirm, etc..  They are restored when returning, for
1621      * recursive calls.
1622      */
1623     save_cmdmod = cmdmod;
1624     vim_memset(&cmdmod, 0, sizeof(cmdmod));
1625 
1626     /*
1627      * Repeat until no more command modifiers are found.
1628      */
1629     ea.cmd = *cmdlinep;
1630     for (;;)
1631     {
1632 /*
1633  * 1. skip comment lines and leading white space and colons
1634  */
1635 	while (*ea.cmd == ' ' || *ea.cmd == '\t' || *ea.cmd == ':')
1636 	    ++ea.cmd;
1637 
1638 	/* in ex mode, an empty line works like :+ */
1639 	if (*ea.cmd == NUL && exmode_active
1640 			&& (getline_equal(getline, cookie, getexmodeline)
1641 			    || getline_equal(getline, cookie, getexline)))
1642 	{
1643 	    ea.cmd = (char_u *)"+";
1644 	    ex_pressedreturn = TRUE;
1645 	}
1646 
1647 	/* ignore comment and empty lines */
1648 	if (*ea.cmd == '"' || *ea.cmd == NUL)
1649 	    goto doend;
1650 
1651 /*
1652  * 2. handle command modifiers.
1653  */
1654 	p = ea.cmd;
1655 	if (VIM_ISDIGIT(*ea.cmd))
1656 	    p = skipwhite(skipdigits(ea.cmd));
1657 	switch (*p)
1658 	{
1659 	    /* When adding an entry, also modify cmd_exists(). */
1660 	    case 'a':	if (!checkforcmd(&ea.cmd, "aboveleft", 3))
1661 			    break;
1662 #ifdef FEAT_WINDOWS
1663 			cmdmod.split |= WSP_ABOVE;
1664 #endif
1665 			continue;
1666 
1667 	    case 'b':	if (checkforcmd(&ea.cmd, "belowright", 3))
1668 			{
1669 #ifdef FEAT_WINDOWS
1670 			    cmdmod.split |= WSP_BELOW;
1671 #endif
1672 			    continue;
1673 			}
1674 			if (checkforcmd(&ea.cmd, "browse", 3))
1675 			{
1676 #ifdef FEAT_BROWSE
1677 			    cmdmod.browse = TRUE;
1678 #endif
1679 			    continue;
1680 			}
1681 			if (!checkforcmd(&ea.cmd, "botright", 2))
1682 			    break;
1683 #ifdef FEAT_WINDOWS
1684 			cmdmod.split |= WSP_BOT;
1685 #endif
1686 			continue;
1687 
1688 	    case 'c':	if (!checkforcmd(&ea.cmd, "confirm", 4))
1689 			    break;
1690 #if defined(FEAT_GUI_DIALOG) || defined(FEAT_CON_DIALOG)
1691 			cmdmod.confirm = TRUE;
1692 #endif
1693 			continue;
1694 
1695 	    case 'k':	if (checkforcmd(&ea.cmd, "keepmarks", 3))
1696 			{
1697 			    cmdmod.keepmarks = TRUE;
1698 			    continue;
1699 			}
1700 			if (checkforcmd(&ea.cmd, "keepalt", 5))
1701 			{
1702 			    cmdmod.keepalt = TRUE;
1703 			    continue;
1704 			}
1705 			if (!checkforcmd(&ea.cmd, "keepjumps", 5))
1706 			    break;
1707 			cmdmod.keepjumps = TRUE;
1708 			continue;
1709 
1710 			/* ":hide" and ":hide | cmd" are not modifiers */
1711 	    case 'h':	if (p != ea.cmd || !checkforcmd(&p, "hide", 3)
1712 					       || *p == NUL || ends_excmd(*p))
1713 			    break;
1714 			ea.cmd = p;
1715 			cmdmod.hide = TRUE;
1716 			continue;
1717 
1718 	    case 'l':	if (checkforcmd(&ea.cmd, "lockmarks", 3))
1719 			{
1720 			    cmdmod.lockmarks = TRUE;
1721 			    continue;
1722 			}
1723 
1724 			if (!checkforcmd(&ea.cmd, "leftabove", 5))
1725 			    break;
1726 #ifdef FEAT_WINDOWS
1727 			cmdmod.split |= WSP_ABOVE;
1728 #endif
1729 			continue;
1730 
1731 	    case 'r':	if (!checkforcmd(&ea.cmd, "rightbelow", 6))
1732 			    break;
1733 #ifdef FEAT_WINDOWS
1734 			cmdmod.split |= WSP_BELOW;
1735 #endif
1736 			continue;
1737 
1738 	    case 's':	if (checkforcmd(&ea.cmd, "sandbox", 3))
1739 			{
1740 #ifdef HAVE_SANDBOX
1741 			    if (!did_sandbox)
1742 				++sandbox;
1743 			    did_sandbox = TRUE;
1744 #endif
1745 			    continue;
1746 			}
1747 			if (!checkforcmd(&ea.cmd, "silent", 3))
1748 			    break;
1749 			++did_silent;
1750 			++msg_silent;
1751 			save_msg_scroll = msg_scroll;
1752 			if (*ea.cmd == '!' && !vim_iswhite(ea.cmd[-1]))
1753 			{
1754 			    /* ":silent!", but not "silent !cmd" */
1755 			    ea.cmd = skipwhite(ea.cmd + 1);
1756 			    ++emsg_silent;
1757 			    ++did_esilent;
1758 			}
1759 			continue;
1760 
1761 	    case 't':	if (!checkforcmd(&ea.cmd, "topleft", 2))
1762 			    break;
1763 #ifdef FEAT_WINDOWS
1764 			cmdmod.split |= WSP_TOP;
1765 #endif
1766 			continue;
1767 
1768 	    case 'v':	if (checkforcmd(&ea.cmd, "vertical", 4))
1769 			{
1770 #ifdef FEAT_VERTSPLIT
1771 			    cmdmod.split |= WSP_VERT;
1772 #endif
1773 			    continue;
1774 			}
1775 			if (!checkforcmd(&p, "verbose", 4))
1776 			    break;
1777 			if (verbose_save < 0)
1778 			    verbose_save = p_verbose;
1779 			if (vim_isdigit(*ea.cmd))
1780 			    p_verbose = atoi((char *)ea.cmd);
1781 			else
1782 			    p_verbose = 1;
1783 			ea.cmd = p;
1784 			continue;
1785 	}
1786 	break;
1787     }
1788 
1789 #ifdef FEAT_EVAL
1790     ea.skip = did_emsg || got_int || did_throw || (cstack->cs_idx >= 0
1791 			 && !(cstack->cs_flags[cstack->cs_idx] & CSF_ACTIVE));
1792 #else
1793     ea.skip = (if_level > 0);
1794 #endif
1795 
1796 #ifdef FEAT_EVAL
1797     /* May go to debug mode.  If this happens and the ">quit" debug command is
1798      * used, throw an interrupt exception and skip the next command. */
1799     dbg_check_breakpoint(&ea);
1800     if (!ea.skip && got_int)
1801     {
1802 	ea.skip = TRUE;
1803 	(void)do_intthrow(cstack);
1804     }
1805 #endif
1806 
1807 /*
1808  * 3. parse a range specifier of the form: addr [,addr] [;addr] ..
1809  *
1810  * where 'addr' is:
1811  *
1812  * %	      (entire file)
1813  * $  [+-NUM]
1814  * 'x [+-NUM] (where x denotes a currently defined mark)
1815  * .  [+-NUM]
1816  * [+-NUM]..
1817  * NUM
1818  *
1819  * The ea.cmd pointer is updated to point to the first character following the
1820  * range spec. If an initial address is found, but no second, the upper bound
1821  * is equal to the lower.
1822  */
1823 
1824     /* repeat for all ',' or ';' separated addresses */
1825     for (;;)
1826     {
1827 	ea.line1 = ea.line2;
1828 	ea.line2 = curwin->w_cursor.lnum;   /* default is current line number */
1829 	ea.cmd = skipwhite(ea.cmd);
1830 	lnum = get_address(&ea.cmd, ea.skip, ea.addr_count == 0);
1831 	if (ea.cmd == NULL)		    /* error detected */
1832 	    goto doend;
1833 	if (lnum == MAXLNUM)
1834 	{
1835 	    if (*ea.cmd == '%')		    /* '%' - all lines */
1836 	    {
1837 		++ea.cmd;
1838 		ea.line1 = 1;
1839 		ea.line2 = curbuf->b_ml.ml_line_count;
1840 		++ea.addr_count;
1841 	    }
1842 					    /* '*' - visual area */
1843 	    else if (*ea.cmd == '*' && vim_strchr(p_cpo, CPO_STAR) == NULL)
1844 	    {
1845 		pos_T	    *fp;
1846 
1847 		++ea.cmd;
1848 		if (!ea.skip)
1849 		{
1850 		    fp = getmark('<', FALSE);
1851 		    if (check_mark(fp) == FAIL)
1852 			goto doend;
1853 		    ea.line1 = fp->lnum;
1854 		    fp = getmark('>', FALSE);
1855 		    if (check_mark(fp) == FAIL)
1856 			goto doend;
1857 		    ea.line2 = fp->lnum;
1858 		    ++ea.addr_count;
1859 		}
1860 	    }
1861 	}
1862 	else
1863 	    ea.line2 = lnum;
1864 	ea.addr_count++;
1865 
1866 	if (*ea.cmd == ';')
1867 	{
1868 	    if (!ea.skip)
1869 		curwin->w_cursor.lnum = ea.line2;
1870 	}
1871 	else if (*ea.cmd != ',')
1872 	    break;
1873 	++ea.cmd;
1874     }
1875 
1876     /* One address given: set start and end lines */
1877     if (ea.addr_count == 1)
1878     {
1879 	ea.line1 = ea.line2;
1880 	    /* ... but only implicit: really no address given */
1881 	if (lnum == MAXLNUM)
1882 	    ea.addr_count = 0;
1883     }
1884 
1885     /* Don't leave the cursor on an illegal line (caused by ';') */
1886     check_cursor_lnum();
1887 
1888 /*
1889  * 4. parse command
1890  */
1891 
1892     /*
1893      * Skip ':' and any white space
1894      */
1895     ea.cmd = skipwhite(ea.cmd);
1896     while (*ea.cmd == ':')
1897 	ea.cmd = skipwhite(ea.cmd + 1);
1898 
1899     /*
1900      * If we got a line, but no command, then go to the line.
1901      * If we find a '|' or '\n' we set ea.nextcmd.
1902      */
1903     if (*ea.cmd == NUL || *ea.cmd == '"' ||
1904 			       (ea.nextcmd = check_nextcmd(ea.cmd)) != NULL)
1905     {
1906 	/*
1907 	 * strange vi behaviour:
1908 	 * ":3"		jumps to line 3
1909 	 * ":3|..."	prints line 3
1910 	 * ":|"		prints current line
1911 	 */
1912 	if (ea.skip)	    /* skip this if inside :if */
1913 	    goto doend;
1914 	if (*ea.cmd == '|')
1915 	{
1916 	    ea.cmdidx = CMD_print;
1917 	    ea.argt = RANGE+COUNT+TRLBAR;
1918 	    if ((errormsg = invalid_range(&ea)) == NULL)
1919 	    {
1920 		correct_range(&ea);
1921 		ex_print(&ea);
1922 	    }
1923 	}
1924 	else if (ea.addr_count != 0)
1925 	{
1926 	    if (ea.line2 < 0)
1927 		errormsg = invalid_range(&ea);
1928 	    else
1929 	    {
1930 		if (ea.line2 == 0)
1931 		    curwin->w_cursor.lnum = 1;
1932 		else if (ea.line2 > curbuf->b_ml.ml_line_count)
1933 		    curwin->w_cursor.lnum = curbuf->b_ml.ml_line_count;
1934 		else
1935 		    curwin->w_cursor.lnum = ea.line2;
1936 		beginline(BL_SOL | BL_FIX);
1937 	    }
1938 	}
1939 	goto doend;
1940     }
1941 
1942     /* Find the command and let "p" point to after it. */
1943     p = find_command(&ea, NULL);
1944 
1945 #ifdef FEAT_USR_CMDS
1946     if (p == NULL)
1947     {
1948 	if (!ea.skip)
1949 	    errormsg = (char_u *)_("E464: Ambiguous use of user-defined command");
1950 	goto doend;
1951     }
1952     /* Check for wrong commands. */
1953     if (*p == '!' && ea.cmd[1] == 0151 && ea.cmd[0] == 78)
1954     {
1955 	errormsg = uc_fun_cmd();
1956 	goto doend;
1957     }
1958 #endif
1959     if (ea.cmdidx == CMD_SIZE)
1960     {
1961 	if (!ea.skip)
1962 	{
1963 	    STRCPY(IObuff, _("E492: Not an editor command"));
1964 	    if (!sourcing)
1965 	    {
1966 		STRCAT(IObuff, ": ");
1967 		STRNCAT(IObuff, *cmdlinep, 40);
1968 	    }
1969 	    errormsg = IObuff;
1970 	}
1971 	goto doend;
1972     }
1973 
1974     ni = (
1975 #ifdef FEAT_USR_CMDS
1976 	    !USER_CMDIDX(ea.cmdidx) &&
1977 #endif
1978 	    cmdnames[ea.cmdidx].cmd_func == ex_ni);
1979 
1980 #ifndef FEAT_EVAL
1981     /*
1982      * When the expression evaluation is disabled, recognize the ":if" and
1983      * ":endif" commands and ignore everything in between it.
1984      */
1985     if (ea.cmdidx == CMD_if)
1986 	++if_level;
1987     if (if_level)
1988     {
1989 	if (ea.cmdidx == CMD_endif)
1990 	    --if_level;
1991 	goto doend;
1992     }
1993 
1994 #endif
1995 
1996     if (*p == '!' && ea.cmdidx != CMD_substitute)    /* forced commands */
1997     {
1998 	++p;
1999 	ea.forceit = TRUE;
2000     }
2001     else
2002 	ea.forceit = FALSE;
2003 
2004 /*
2005  * 5. parse arguments
2006  */
2007 #ifdef FEAT_USR_CMDS
2008     if (!USER_CMDIDX(ea.cmdidx))
2009 #endif
2010 	ea.argt = cmdnames[(int)ea.cmdidx].cmd_argt;
2011 
2012     if (!ea.skip)
2013     {
2014 #ifdef HAVE_SANDBOX
2015 	if (sandbox != 0 && !(ea.argt & SBOXOK))
2016 	{
2017 	    /* Command not allowed in sandbox. */
2018 	    errormsg = (char_u *)_(e_sandbox);
2019 	    goto doend;
2020 	}
2021 #endif
2022 	if (!curbuf->b_p_ma && (ea.argt & MODIFY))
2023 	{
2024 	    /* Command not allowed in non-'modifiable' buffer */
2025 	    errormsg = (char_u *)_(e_modifiable);
2026 	    goto doend;
2027 	}
2028 #ifdef FEAT_CMDWIN
2029 	if (cmdwin_type != 0 && !(ea.argt & CMDWIN)
2030 # ifdef FEAT_USR_CMDS
2031 		&& !USER_CMDIDX(ea.cmdidx)
2032 # endif
2033 	   )
2034 	{
2035 	    /* Command not allowed in cmdline window. */
2036 	    errormsg = (char_u *)_(e_cmdwin);
2037 	    goto doend;
2038 	}
2039 #endif
2040 
2041 	if (!ni && !(ea.argt & RANGE) && ea.addr_count > 0)
2042 	{
2043 	    /* no range allowed */
2044 	    errormsg = (char_u *)_(e_norange);
2045 	    goto doend;
2046 	}
2047     }
2048 
2049     if (!ni && !(ea.argt & BANG) && ea.forceit)	/* no <!> allowed */
2050     {
2051 	errormsg = (char_u *)_(e_nobang);
2052 	goto doend;
2053     }
2054 
2055     /*
2056      * Don't complain about the range if it is not used
2057      * (could happen if line_count is accidentally set to 0).
2058      */
2059     if (!ea.skip && !ni)
2060     {
2061 	/*
2062 	 * If the range is backwards, ask for confirmation and, if given, swap
2063 	 * ea.line1 & ea.line2 so it's forwards again.
2064 	 * When global command is busy, don't ask, will fail below.
2065 	 */
2066 	if (!global_busy && ea.line1 > ea.line2)
2067 	{
2068 	    if (sourcing)
2069 	    {
2070 		errormsg = (char_u *)_("E493: Backwards range given");
2071 		goto doend;
2072 	    }
2073 	    else
2074 	    {
2075 		int	msg_silent_save = msg_silent;
2076 
2077 		msg_silent = 0;
2078 		if (ask_yesno((char_u *)
2079 			_("Backwards range given, OK to swap"), FALSE) != 'y')
2080 		goto doend;
2081 		msg_silent = msg_silent_save;
2082 	    }
2083 	    lnum = ea.line1;
2084 	    ea.line1 = ea.line2;
2085 	    ea.line2 = lnum;
2086 	}
2087 	if ((errormsg = invalid_range(&ea)) != NULL)
2088 	    goto doend;
2089     }
2090 
2091     if ((ea.argt & NOTADR) && ea.addr_count == 0) /* default is 1, not cursor */
2092 	ea.line2 = 1;
2093 
2094     correct_range(&ea);
2095 
2096 #ifdef FEAT_FOLDING
2097     if (((ea.argt & WHOLEFOLD) || ea.addr_count >= 2) && !global_busy)
2098     {
2099 	/* Put the first line at the start of a closed fold, put the last line
2100 	 * at the end of a closed fold. */
2101 	(void)hasFolding(ea.line1, &ea.line1, NULL);
2102 	(void)hasFolding(ea.line2, NULL, &ea.line2);
2103     }
2104 #endif
2105 
2106 #ifdef FEAT_QUICKFIX
2107     /*
2108      * For the :make and :grep commands we insert the 'makeprg'/'grepprg'
2109      * option here, so things like % get expanded.
2110      */
2111     if (ea.cmdidx == CMD_make || ea.cmdidx == CMD_grep
2112 						  || ea.cmdidx == CMD_grepadd)
2113     {
2114 	char_u		*new_cmdline;
2115 	char_u		*program;
2116 	char_u		*pos;
2117 	char_u		*ptr;
2118 	int		len;
2119 	int		i;
2120 
2121 	if (ea.cmdidx == CMD_grep || ea.cmdidx == CMD_grepadd)
2122 	{
2123 	    if (*curbuf->b_p_gp == NUL)
2124 		program = p_gp;
2125 	    else
2126 		program = curbuf->b_p_gp;
2127 	}
2128 	else
2129 	{
2130 	    if (*curbuf->b_p_mp == NUL)
2131 		program = p_mp;
2132 	    else
2133 		program = curbuf->b_p_mp;
2134 	}
2135 
2136 	p = skipwhite(p);
2137 
2138 	if ((pos = (char_u *)strstr((char *)program, "$*")) != NULL)
2139 	{				/* replace $* by given arguments */
2140 	    i = 1;
2141 	    while ((pos = (char_u *)strstr((char *)pos + 2, "$*")) != NULL)
2142 		++i;
2143 	    len = (int)STRLEN(p);
2144 	    new_cmdline = alloc((int)(STRLEN(program) + i * (len - 2) + 1));
2145 	    if (new_cmdline == NULL)
2146 		goto doend;		    /* out of memory */
2147 	    ptr = new_cmdline;
2148 	    while ((pos = (char_u *)strstr((char *)program, "$*")) != NULL)
2149 	    {
2150 		i = (int)(pos - program);
2151 		STRNCPY(ptr, program, i);
2152 		STRCPY(ptr += i, p);
2153 		ptr += len;
2154 		program = pos + 2;
2155 	    }
2156 	    STRCPY(ptr, program);
2157 	}
2158 	else
2159 	{
2160 	    new_cmdline = alloc((int)(STRLEN(program) + STRLEN(p) + 2));
2161 	    if (new_cmdline == NULL)
2162 		goto doend;		    /* out of memory */
2163 	    STRCPY(new_cmdline, program);
2164 	    STRCAT(new_cmdline, " ");
2165 	    STRCAT(new_cmdline, p);
2166 	}
2167 	msg_make(p);
2168 	/* 'ea.cmd' is not set here, because it is not used at CMD_make */
2169 	vim_free(*cmdlinep);
2170 	*cmdlinep = new_cmdline;
2171 	p = new_cmdline;
2172     }
2173 #endif
2174 
2175     /*
2176      * Skip to start of argument.
2177      * Don't do this for the ":!" command, because ":!! -l" needs the space.
2178      */
2179     if (ea.cmdidx == CMD_bang)
2180 	ea.arg = p;
2181     else
2182 	ea.arg = skipwhite(p);
2183 
2184     /*
2185      * Check for "++opt=val" argument.
2186      * Must be first, allow ":w ++enc=utf8 !cmd"
2187      */
2188     if (ea.argt & ARGOPT)
2189 	while (ea.arg[0] == '+' && ea.arg[1] == '+')
2190 	    if (getargopt(&ea) == FAIL && !ni)
2191 	    {
2192 		errormsg = (char_u *)_(e_invarg);
2193 		goto doend;
2194 	    }
2195 
2196     if (ea.cmdidx == CMD_write || ea.cmdidx == CMD_update)
2197     {
2198 	if (*ea.arg == '>')			/* append */
2199 	{
2200 	    if (*++ea.arg != '>')		/* typed wrong */
2201 	    {
2202 		errormsg = (char_u *)_("E494: Use w or w>>");
2203 		goto doend;
2204 	    }
2205 	    ea.arg = skipwhite(ea.arg + 1);
2206 	    ea.append = TRUE;
2207 	}
2208 	else if (*ea.arg == '!' && ea.cmdidx == CMD_write)  /* :w !filter */
2209 	{
2210 	    ++ea.arg;
2211 	    ea.usefilter = TRUE;
2212 	}
2213     }
2214 
2215     if (ea.cmdidx == CMD_read)
2216     {
2217 	if (ea.forceit)
2218 	{
2219 	    ea.usefilter = TRUE;		/* :r! filter if ea.forceit */
2220 	    ea.forceit = FALSE;
2221 	}
2222 	else if (*ea.arg == '!')		/* :r !filter */
2223 	{
2224 	    ++ea.arg;
2225 	    ea.usefilter = TRUE;
2226 	}
2227     }
2228 
2229     if (ea.cmdidx == CMD_lshift || ea.cmdidx == CMD_rshift)
2230     {
2231 	ea.amount = 1;
2232 	while (*ea.arg == *ea.cmd)		/* count number of '>' or '<' */
2233 	{
2234 	    ++ea.arg;
2235 	    ++ea.amount;
2236 	}
2237 	ea.arg = skipwhite(ea.arg);
2238     }
2239 
2240     /*
2241      * Check for "+command" argument, before checking for next command.
2242      * Don't do this for ":read !cmd" and ":write !cmd".
2243      */
2244     if ((ea.argt & EDITCMD) && !ea.usefilter)
2245 	ea.do_ecmd_cmd = getargcmd(&ea.arg);
2246 
2247     /*
2248      * Check for '|' to separate commands and '"' to start comments.
2249      * Don't do this for ":read !cmd" and ":write !cmd".
2250      */
2251     if ((ea.argt & TRLBAR) && !ea.usefilter)
2252 	separate_nextcmd(&ea);
2253 
2254     /*
2255      * Check for <newline> to end a shell command.
2256      * Also do this for ":read !cmd" and ":write !cmd".
2257      */
2258     else if (ea.cmdidx == CMD_bang || ea.usefilter)
2259     {
2260 	for (p = ea.arg; *p; ++p)
2261 	{
2262 	    /* Remove one backslash before a newline, so that it's possible to
2263 	     * pass a newline to the shell and also a newline that is preceded
2264 	     * with a backslash.  This makes it impossible to end a shell
2265 	     * command in a backslash, but that doesn't appear useful.
2266 	     * Halving the number of backslashes is incompatible with previous
2267 	     * versions. */
2268 	    if (*p == '\\' && p[1] == '\n')
2269 		mch_memmove(p, p + 1, STRLEN(p));
2270 	    else if (*p == '\n')
2271 	    {
2272 		ea.nextcmd = p + 1;
2273 		*p = NUL;
2274 		break;
2275 	    }
2276 	}
2277     }
2278 
2279     if ((ea.argt & DFLALL) && ea.addr_count == 0)
2280     {
2281 	ea.line1 = 1;
2282 	ea.line2 = curbuf->b_ml.ml_line_count;
2283     }
2284 
2285     /* accept numbered register only when no count allowed (:put) */
2286     if (       (ea.argt & REGSTR)
2287 	    && *ea.arg != NUL
2288 #ifdef FEAT_USR_CMDS
2289 	    && valid_yank_reg(*ea.arg, (ea.cmdidx != CMD_put
2290 						   && USER_CMDIDX(ea.cmdidx)))
2291 	    /* Do not allow register = for user commands */
2292 	    && (!USER_CMDIDX(ea.cmdidx) || *ea.arg != '=')
2293 #else
2294 	    && valid_yank_reg(*ea.arg, ea.cmdidx != CMD_put)
2295 #endif
2296 	    && !((ea.argt & COUNT) && VIM_ISDIGIT(*ea.arg)))
2297     {
2298 	ea.regname = *ea.arg++;
2299 #ifdef FEAT_EVAL
2300 	/* for '=' register: accept the rest of the line as an expression */
2301 	if (ea.arg[-1] == '=' && ea.arg[0] != NUL)
2302 	{
2303 	    set_expr_line(vim_strsave(ea.arg));
2304 	    ea.arg += STRLEN(ea.arg);
2305 	}
2306 #endif
2307 	ea.arg = skipwhite(ea.arg);
2308     }
2309 
2310     /*
2311      * Check for a count.  When accepting a BUFNAME, don't use "123foo" as a
2312      * count, it's a buffer name.
2313      */
2314     if ((ea.argt & COUNT) && VIM_ISDIGIT(*ea.arg)
2315 	    && (!(ea.argt & BUFNAME) || *(p = skipdigits(ea.arg)) == NUL
2316 							  || vim_iswhite(*p)))
2317     {
2318 	n = getdigits(&ea.arg);
2319 	ea.arg = skipwhite(ea.arg);
2320 	if (n <= 0 && !ni)
2321 	{
2322 	    errormsg = (char_u *)_(e_zerocount);
2323 	    goto doend;
2324 	}
2325 	if (ea.argt & NOTADR)	/* e.g. :buffer 2, :sleep 3 */
2326 	{
2327 	    ea.line2 = n;
2328 	    if (ea.addr_count == 0)
2329 		ea.addr_count = 1;
2330 	}
2331 	else
2332 	{
2333 	    ea.line1 = ea.line2;
2334 	    ea.line2 += n - 1;
2335 	    ++ea.addr_count;
2336 	    /*
2337 	     * Be vi compatible: no error message for out of range.
2338 	     */
2339 	    if (ea.line2 > curbuf->b_ml.ml_line_count)
2340 		ea.line2 = curbuf->b_ml.ml_line_count;
2341 	}
2342     }
2343 						/* no arguments allowed */
2344     if (!ni && !(ea.argt & EXTRA) && *ea.arg != NUL
2345 			      && vim_strchr((char_u *)"|\"", *ea.arg) == NULL)
2346     {
2347 	errormsg = (char_u *)_(e_trailing);
2348 	goto doend;
2349     }
2350 
2351     if (!ni && (ea.argt & NEEDARG) && *ea.arg == NUL)
2352     {
2353 	errormsg = (char_u *)_(e_argreq);
2354 	goto doend;
2355     }
2356 
2357 #ifdef FEAT_EVAL
2358     /*
2359      * Skip the command when it's not going to be executed.
2360      * The commands like :if, :endif, etc. always need to be executed.
2361      * Also make an exception for commands that handle a trailing command
2362      * themselves.
2363      */
2364     if (ea.skip)
2365     {
2366 	switch (ea.cmdidx)
2367 	{
2368 	    /* commands that need evaluation */
2369 	    case CMD_while:
2370 	    case CMD_endwhile:
2371 	    case CMD_if:
2372 	    case CMD_elseif:
2373 	    case CMD_else:
2374 	    case CMD_endif:
2375 	    case CMD_try:
2376 	    case CMD_catch:
2377 	    case CMD_finally:
2378 	    case CMD_endtry:
2379 	    case CMD_function:
2380 				break;
2381 
2382 	    /* Commands that handle '|' themselves.  Check: A command should
2383 	     * either have the TRLBAR flag, appear in this list or appear in
2384 	     * the list at ":help :bar". */
2385 	    case CMD_aboveleft:
2386 	    case CMD_and:
2387 	    case CMD_belowright:
2388 	    case CMD_botright:
2389 	    case CMD_browse:
2390 	    case CMD_call:
2391 	    case CMD_confirm:
2392 	    case CMD_delfunction:
2393 	    case CMD_djump:
2394 	    case CMD_dlist:
2395 	    case CMD_dsearch:
2396 	    case CMD_dsplit:
2397 	    case CMD_echo:
2398 	    case CMD_echoerr:
2399 	    case CMD_echomsg:
2400 	    case CMD_echon:
2401 	    case CMD_execute:
2402 	    case CMD_help:
2403 	    case CMD_hide:
2404 	    case CMD_ijump:
2405 	    case CMD_ilist:
2406 	    case CMD_isearch:
2407 	    case CMD_isplit:
2408 	    case CMD_keepalt:
2409 	    case CMD_keepjumps:
2410 	    case CMD_keepmarks:
2411 	    case CMD_leftabove:
2412 	    case CMD_let:
2413 	    case CMD_lockmarks:
2414 	    case CMD_match:
2415 	    case CMD_mzscheme:
2416 	    case CMD_perl:
2417 	    case CMD_psearch:
2418 	    case CMD_python:
2419 	    case CMD_return:
2420 	    case CMD_rightbelow:
2421 	    case CMD_ruby:
2422 	    case CMD_silent:
2423 	    case CMD_smagic:
2424 	    case CMD_snomagic:
2425 	    case CMD_substitute:
2426 	    case CMD_syntax:
2427 	    case CMD_tcl:
2428 	    case CMD_throw:
2429 	    case CMD_tilde:
2430 	    case CMD_topleft:
2431 	    case CMD_unlet:
2432 	    case CMD_verbose:
2433 	    case CMD_vertical:
2434 				break;
2435 
2436 	    default:		goto doend;
2437 	}
2438     }
2439 #endif
2440 
2441     if (ea.argt & XFILE)
2442     {
2443 	if (expand_filename(&ea, cmdlinep, &errormsg) == FAIL)
2444 	    goto doend;
2445     }
2446 
2447 #ifdef FEAT_LISTCMDS
2448     /*
2449      * Accept buffer name.  Cannot be used at the same time with a buffer
2450      * number.  Don't do this for a user command.
2451      */
2452     if ((ea.argt & BUFNAME) && *ea.arg != NUL && ea.addr_count == 0
2453 # ifdef FEAT_USR_CMDS
2454 	    && !USER_CMDIDX(ea.cmdidx)
2455 # endif
2456 	    )
2457     {
2458 	/*
2459 	 * :bdelete, :bwipeout and :bunload take several arguments, separated
2460 	 * by spaces: find next space (skipping over escaped characters).
2461 	 * The others take one argument: ignore trailing spaces.
2462 	 */
2463 	if (ea.cmdidx == CMD_bdelete || ea.cmdidx == CMD_bwipeout
2464 						  || ea.cmdidx == CMD_bunload)
2465 	    p = skiptowhite_esc(ea.arg);
2466 	else
2467 	{
2468 	    p = ea.arg + STRLEN(ea.arg);
2469 	    while (p > ea.arg && vim_iswhite(p[-1]))
2470 		--p;
2471 	}
2472 	ea.line2 = buflist_findpat(ea.arg, p, (ea.argt & BUFUNL) != 0, FALSE);
2473 	if (ea.line2 < 0)	    /* failed */
2474 	    goto doend;
2475 	ea.addr_count = 1;
2476 	ea.arg = skipwhite(p);
2477     }
2478 #endif
2479 
2480 /*
2481  * 6. switch on command name
2482  *
2483  * The "ea" structure holds the arguments that can be used.
2484  */
2485     ea.cmdlinep = cmdlinep;
2486     ea.getline = getline;
2487     ea.cookie = cookie;
2488 #ifdef FEAT_EVAL
2489     ea.cstack = cstack;
2490 #endif
2491 
2492 #ifdef FEAT_USR_CMDS
2493     if (USER_CMDIDX(ea.cmdidx))
2494     {
2495 	/*
2496 	 * Execute a user-defined command.
2497 	 */
2498 	do_ucmd(&ea);
2499     }
2500     else
2501 #endif
2502     {
2503 	/*
2504 	 * Call the function to execute the command.
2505 	 */
2506 	ea.errmsg = NULL;
2507 	(cmdnames[ea.cmdidx].cmd_func)(&ea);
2508 	if (ea.errmsg != NULL)
2509 	    errormsg = (char_u *)_(ea.errmsg);
2510     }
2511 
2512 #ifdef FEAT_EVAL
2513     /*
2514      * If the command just executed called do_cmdline(), any throw or ":return"
2515      * or ":finish" encountered there must also check the cstack of the still
2516      * active do_cmdline() that called this do_one_cmd().  Rethrow an uncaught
2517      * exception, or reanimate a returned function or finished script file and
2518      * return or finish it again.
2519      */
2520     if (need_rethrow)
2521 	do_throw(cstack);
2522     else if (check_cstack)
2523     {
2524 	if (source_finished(getline, cookie))
2525 	    do_finish(&ea, TRUE);
2526 	else if (getline_equal(getline, cookie, get_func_line)
2527 						   && current_func_returned())
2528 	    do_return(&ea, TRUE, FALSE, NULL);
2529     }
2530     need_rethrow = check_cstack = FALSE;
2531 #endif
2532 
2533 doend:
2534     if (curwin->w_cursor.lnum == 0)	/* can happen with zero line number */
2535 	curwin->w_cursor.lnum = 1;
2536 
2537     if (errormsg != NULL && *errormsg != NUL && !did_emsg)
2538     {
2539 	if (sourcing)
2540 	{
2541 	    if (errormsg != IObuff)
2542 	    {
2543 		STRCPY(IObuff, errormsg);
2544 		errormsg = IObuff;
2545 	    }
2546 	    STRCAT(errormsg, ": ");
2547 	    STRNCAT(errormsg, *cmdlinep, IOSIZE - STRLEN(IObuff));
2548 	}
2549 	emsg(errormsg);
2550     }
2551 #ifdef FEAT_EVAL
2552     do_errthrow(cstack,
2553 	    (ea.cmdidx != CMD_SIZE
2554 # ifdef FEAT_USR_CMDS
2555 	     && !USER_CMDIDX(ea.cmdidx)
2556 # endif
2557 	    ) ? cmdnames[(int)ea.cmdidx].cmd_name : (char_u *)NULL);
2558 #endif
2559 
2560     if (verbose_save >= 0)
2561 	p_verbose = verbose_save;
2562 
2563     cmdmod = save_cmdmod;
2564 
2565     if (did_silent > 0)
2566     {
2567 	/* messages could be enabled for a serious error, need to check if the
2568 	 * counters don't become negative */
2569 	msg_silent -= did_silent;
2570 	if (msg_silent < 0)
2571 	    msg_silent = 0;
2572 	emsg_silent -= did_esilent;
2573 	if (emsg_silent < 0)
2574 	    emsg_silent = 0;
2575 	/* Restore msg_scroll, it's set by file I/O commands, even when no
2576 	 * message is actually displayed. */
2577 	msg_scroll = save_msg_scroll;
2578     }
2579 
2580 #ifdef HAVE_SANDBOX
2581     if (did_sandbox)
2582 	--sandbox;
2583 #endif
2584 
2585     if (ea.nextcmd && *ea.nextcmd == NUL)	/* not really a next command */
2586 	ea.nextcmd = NULL;
2587 
2588 #ifdef FEAT_EVAL
2589     --ex_nesting_level;
2590 #endif
2591 
2592     return ea.nextcmd;
2593 }
2594 #if (_MSC_VER == 1200)
2595 # pragma optimize( "", on )
2596 #endif
2597 
2598 /*
2599  * Check for a command modifier command with optional tail.
2600  * If there is a match advance "pp" to the argument and return TRUE.
2601  */
2602     static int
2603 checkforcmd(pp, cmd, len)
2604     char_u	**pp;		/* start of command line */
2605     char	*cmd;		/* name of command */
2606     int		len;		/* required length */
2607 {
2608     int		i;
2609 
2610     for (i = 0; cmd[i] != NUL; ++i)
2611 	if (cmd[i] != (*pp)[i])
2612 	    break;
2613     if (i >= len && !isalpha((*pp)[i]))
2614     {
2615 	*pp = skipwhite(*pp + i);
2616 	return TRUE;
2617     }
2618     return FALSE;
2619 }
2620 
2621 /*
2622  * Find an Ex command by its name, either built-in or user.
2623  * Name can be found at eap->cmd.
2624  * Returns pointer to char after the command name.
2625  * Returns NULL for an ambiguous user command.
2626  */
2627 /*ARGSUSED*/
2628     static char_u *
2629 find_command(eap, full)
2630     exarg_T	*eap;
2631     int		*full;
2632 {
2633     int		len;
2634     char_u	*p;
2635 
2636     /*
2637      * Isolate the command and search for it in the command table.
2638      * Exeptions:
2639      * - the 'k' command can directly be followed by any character.
2640      * - the 's' command can be followed directly by 'c', 'g', 'i', 'I' or 'r'
2641      *	    but :sre[wind] is another command, as are :scrip[tnames],
2642      *	    :scs[cope], :sim[alt], :sig[ns] and :sil[ent].
2643      */
2644     p = eap->cmd;
2645     if (*p == 'k')
2646     {
2647 	eap->cmdidx = CMD_k;
2648 	++p;
2649     }
2650     else if (p[0] == 's'
2651 	    && ((p[1] == 'c' && p[2] != 's' && p[2] != 'r' && p[3] != 'i' && p[4] != 'p')
2652 		|| p[1] == 'g'
2653 		|| (p[1] == 'i' && p[2] != 'm' && p[2] != 'l' && p[2] != 'g')
2654 		|| p[1] == 'I'
2655 		|| (p[1] == 'r' && p[2] != 'e')))
2656     {
2657 	eap->cmdidx = CMD_substitute;
2658 	++p;
2659     }
2660     else
2661     {
2662 	while (ASCII_ISALPHA(*p))
2663 	    ++p;
2664 	/* check for non-alpha command */
2665 	if (p == eap->cmd && vim_strchr((char_u *)"@*!=><&~#", *p) != NULL)
2666 	    ++p;
2667 	len = (int)(p - eap->cmd);
2668 
2669 	if (ASCII_ISLOWER(*eap->cmd))
2670 	    eap->cmdidx = cmdidxs[CharOrdLow(*eap->cmd)];
2671 	else
2672 	    eap->cmdidx = cmdidxs[26];
2673 
2674 	for ( ; (int)eap->cmdidx < (int)CMD_SIZE;
2675 			       eap->cmdidx = (cmdidx_T)((int)eap->cmdidx + 1))
2676 	    if (STRNCMP(cmdnames[(int)eap->cmdidx].cmd_name, (char *)eap->cmd,
2677 							    (size_t)len) == 0)
2678 	    {
2679 #ifdef FEAT_EVAL
2680 		if (full != NULL
2681 			   && cmdnames[(int)eap->cmdidx].cmd_name[len] == NUL)
2682 		    *full = TRUE;
2683 #endif
2684 		break;
2685 	    }
2686 
2687 #ifdef FEAT_USR_CMDS
2688 	/* Look for a user defined command as a last resort */
2689 	if (eap->cmdidx == CMD_SIZE && *eap->cmd >= 'A' && *eap->cmd <= 'Z')
2690 	{
2691 	    ucmd_T	*cmd;
2692 	    int		j, k, matchlen = 0;
2693 	    int		found = FALSE, possible = FALSE;
2694 	    char_u	*cp, *np;	/* Point into typed cmd and test name */
2695 	    garray_T	*gap;
2696 	    int		amb_local = FALSE; /* Found ambiguous buffer-local
2697 					      command, only full match global
2698 					      is accepted. */
2699 
2700 	    /* User defined commands may contain numbers */
2701 	    while (ASCII_ISALNUM(*p))
2702 		++p;
2703 	    len = (int)(p - eap->cmd);
2704 
2705 	    /*
2706 	     * Look for buffer-local user commands first, then global ones.
2707 	     */
2708 	    gap = &curbuf->b_ucmds;
2709 	    for (;;)
2710 	    {
2711 		for (j = 0; j < gap->ga_len; ++j)
2712 		{
2713 		    cmd = USER_CMD_GA(gap, j);
2714 		    cp = eap->cmd;
2715 		    np = cmd->uc_name;
2716 		    k = 0;
2717 		    while (k < len && *np != NUL && *cp++ == *np++)
2718 			k++;
2719 		    if (k == len || (*np == NUL && vim_isdigit(eap->cmd[k])))
2720 		    {
2721 			/* If finding a second match, the command is
2722 			 * ambiguous.  But not if a buffer-local command
2723 			 * wasn't a full match and a global command is a full
2724 			 * match. */
2725 			if (k == len && found && *np != NUL)
2726 			{
2727 			    if (gap == &ucmds)
2728 				return NULL;
2729 			    amb_local = TRUE;
2730 			}
2731 
2732 			if (!found || (k == len && *np == NUL))
2733 			{
2734 			    /* If we matched up to a digit, then there could
2735 			     * be another command including the digit that we
2736 			     * should use instead.
2737 			     */
2738 			    if (k == len)
2739 				found = TRUE;
2740 			    else
2741 				possible = TRUE;
2742 
2743 			    if (gap == &ucmds)
2744 				eap->cmdidx = CMD_USER;
2745 			    else
2746 				eap->cmdidx = CMD_USER_BUF;
2747 			    eap->argt = cmd->uc_argt;
2748 			    eap->useridx = j;
2749 
2750 			    /* Do not search for further abbreviations
2751 			     * if this is an exact match. */
2752 			    matchlen = k;
2753 			    if (k == len && *np == NUL)
2754 			    {
2755 				if (full != NULL)
2756 				    *full = TRUE;
2757 				amb_local = FALSE;
2758 				break;
2759 			    }
2760 			}
2761 		    }
2762 		}
2763 
2764 		/* Stop if we found a full match or searched all. */
2765 		if (j < gap->ga_len || gap == &ucmds)
2766 		    break;
2767 		gap = &ucmds;
2768 	    }
2769 
2770 	    /* Only found ambiguous matches. */
2771 	    if (amb_local)
2772 		return NULL;
2773 
2774 	    /* The match we found may be followed immediately by a
2775 	     * number.  Move *p back to point to it.
2776 	     */
2777 	    if (found || possible)
2778 		p += matchlen - len;
2779 	}
2780 #endif
2781 
2782 	if (len == 0)
2783 	    eap->cmdidx = CMD_SIZE;
2784     }
2785 
2786     return p;
2787 }
2788 
2789 #if defined(FEAT_EVAL) || defined(PROTO)
2790 /*
2791  * Return > 0 if an Ex command "name" exists.
2792  * Return 2 if there is an exact match.
2793  * Return 3 if there is an ambiguous match.
2794  */
2795     int
2796 cmd_exists(name)
2797     char_u	*name;
2798 {
2799     exarg_T	ea;
2800     int		full = FALSE;
2801     int		i;
2802     int		j;
2803     static struct cmdmod
2804     {
2805 	char	*name;
2806 	int	minlen;
2807     } cmdmods[] = {
2808 	{"aboveleft", 3},
2809 	{"belowright", 3},
2810 	{"botright", 2},
2811 	{"browse", 3},
2812 	{"confirm", 4},
2813 	{"hide", 3},
2814 	{"keepalt", 5},
2815 	{"keepjumps", 5},
2816 	{"keepmarks", 3},
2817 	{"leftabove", 5},
2818 	{"lockmarks", 3},
2819 	{"rightbelow", 6},
2820 	{"sandbox", 3},
2821 	{"silent", 3},
2822 	{"topleft", 2},
2823 	{"verbose", 4},
2824 	{"vertical", 4},
2825     };
2826 
2827     /* Check command modifiers. */
2828     for (i = 0; i < sizeof(cmdmods) / sizeof(struct cmdmod); ++i)
2829     {
2830 	for (j = 0; name[j] != NUL; ++j)
2831 	    if (name[j] != cmdmods[i].name[j])
2832 		break;
2833 	if (name[j] == NUL && j >= cmdmods[i].minlen)
2834 	    return (cmdmods[i].name[j] == NUL ? 2 : 1);
2835     }
2836 
2837     /* Check built-in commands and user defined commands. */
2838     ea.cmd = name;
2839     ea.cmdidx = (cmdidx_T)0;
2840     if (find_command(&ea, &full) == NULL)
2841 	return 3;
2842     return (ea.cmdidx == CMD_SIZE ? 0 : (full ? 2 : 1));
2843 }
2844 #endif
2845 
2846 /*
2847  * This is all pretty much copied from do_one_cmd(), with all the extra stuff
2848  * we don't need/want deleted.	Maybe this could be done better if we didn't
2849  * repeat all this stuff.  The only problem is that they may not stay
2850  * perfectly compatible with each other, but then the command line syntax
2851  * probably won't change that much -- webb.
2852  */
2853     char_u *
2854 set_one_cmd_context(xp, buff)
2855     expand_T	*xp;
2856     char_u	*buff;	    /* buffer for command string */
2857 {
2858     char_u		*p;
2859     char_u		*cmd, *arg;
2860     int			i = 0;
2861     cmdidx_T		cmdidx;
2862     long_u		argt = 0;
2863 #if defined(FEAT_USR_CMDS) && defined(FEAT_CMDL_COMPL)
2864     int			compl = EXPAND_NOTHING;
2865 #endif
2866 #ifdef FEAT_CMDL_COMPL
2867     int			delim;
2868 #endif
2869     int			forceit = FALSE;
2870     int			usefilter = FALSE;  /* filter instead of file name */
2871 
2872     xp->xp_pattern = buff;
2873     xp->xp_context = EXPAND_COMMANDS;	/* Default until we get past command */
2874     xp->xp_backslash = XP_BS_NONE;
2875 #if defined(FEAT_USR_CMDS) && defined(FEAT_EVAL) && defined(FEAT_CMDL_COMPL)
2876     xp->xp_arg = NULL;
2877 #endif
2878 
2879 /*
2880  * 2. skip comment lines and leading space, colons or bars
2881  */
2882     for (cmd = buff; vim_strchr((char_u *)" \t:|", *cmd) != NULL; cmd++)
2883 	;
2884     xp->xp_pattern = cmd;
2885 
2886     if (*cmd == NUL)
2887 	return NULL;
2888     if (*cmd == '"')	    /* ignore comment lines */
2889     {
2890 	xp->xp_context = EXPAND_NOTHING;
2891 	return NULL;
2892     }
2893 
2894 /*
2895  * 3. parse a range specifier of the form: addr [,addr] [;addr] ..
2896  */
2897     cmd = skip_range(cmd, &xp->xp_context);
2898 
2899 /*
2900  * 4. parse command
2901  */
2902 
2903     cmd = skipwhite(cmd);
2904     xp->xp_pattern = cmd;
2905     if (*cmd == NUL)
2906 	return NULL;
2907     if (*cmd == '"')
2908     {
2909 	xp->xp_context = EXPAND_NOTHING;
2910 	return NULL;
2911     }
2912 
2913     if (*cmd == '|' || *cmd == '\n')
2914 	return cmd + 1;			/* There's another command */
2915 
2916     /*
2917      * Isolate the command and search for it in the command table.
2918      * Exceptions:
2919      * - the 'k' command can directly be followed by any character, but
2920      *   do accept "keepmarks", "keepalt" and "keepjumps".
2921      * - the 's' command can be followed directly by 'c', 'g', 'i', 'I' or 'r'
2922      */
2923     if (*cmd == 'k' && cmd[1] != 'e')
2924     {
2925 	cmdidx = CMD_k;
2926 	p = cmd + 1;
2927     }
2928     else
2929     {
2930 	p = cmd;
2931 	while (ASCII_ISALPHA(*p) || *p == '*')    /* Allow * wild card */
2932 	    ++p;
2933 	/* check for non-alpha command */
2934 	if (p == cmd && vim_strchr((char_u *)"@*!=><&~#", *p) != NULL)
2935 	    ++p;
2936 	i = (int)(p - cmd);
2937 
2938 	if (i == 0)
2939 	{
2940 	    xp->xp_context = EXPAND_UNSUCCESSFUL;
2941 	    return NULL;
2942 	}
2943 	for (cmdidx = (cmdidx_T)0; (int)cmdidx < (int)CMD_SIZE;
2944 					 cmdidx = (cmdidx_T)((int)cmdidx + 1))
2945 	    if (STRNCMP(cmdnames[(int)cmdidx].cmd_name, cmd, (size_t)i) == 0)
2946 		break;
2947 
2948 #ifdef FEAT_USR_CMDS
2949 	if (cmd[0] >= 'A' && cmd[0] <= 'Z')
2950 	{
2951 	    while (ASCII_ISALNUM(*p) || *p == '*')	/* Allow * wild card */
2952 		++p;
2953 	    i = (int)(p - cmd);
2954 	}
2955 #endif
2956     }
2957 
2958     /*
2959      * If the cursor is touching the command, and it ends in an alpha-numeric
2960      * character, complete the command name.
2961      */
2962     if (*p == NUL && ASCII_ISALNUM(p[-1]))
2963 	return NULL;
2964 
2965     if (cmdidx == CMD_SIZE)
2966     {
2967 	if (*cmd == 's' && vim_strchr((char_u *)"cgriI", cmd[1]) != NULL)
2968 	{
2969 	    cmdidx = CMD_substitute;
2970 	    p = cmd + 1;
2971 	}
2972 #ifdef FEAT_USR_CMDS
2973 	else if (cmd[0] >= 'A' && cmd[0] <= 'Z')
2974 	{
2975 	    /* Look for a user defined command as a last resort */
2976 	    ucmd_T	*uc;
2977 	    int		j, k, matchlen = 0;
2978 	    int		found = FALSE, possible = FALSE;
2979 	    char_u	*cp, *np;	/* Point into typed cmd and test name */
2980 	    garray_T	*gap;
2981 
2982 	    gap = &curbuf->b_ucmds;
2983 	    for (;;)
2984 	    {
2985 		uc = USER_CMD_GA(gap, 0);
2986 		for (j = 0; j < gap->ga_len; ++j, ++uc)
2987 		{
2988 		    cp = cmd;
2989 		    np = uc->uc_name;
2990 		    k = 0;
2991 		    while (k < i && *np != NUL && *cp++ == *np++)
2992 			k++;
2993 		    if (k == i || (*np == NUL && VIM_ISDIGIT(cmd[k])))
2994 		    {
2995 			if (k == i && found)
2996 			{
2997 			    /* Ambiguous abbreviation */
2998 			    xp->xp_context = EXPAND_UNSUCCESSFUL;
2999 			    return NULL;
3000 			}
3001 			if (!found)
3002 			{
3003 			    /* If we matched up to a digit, then there could
3004 			     * be another command including the digit that we
3005 			     * should use instead.
3006 			     */
3007 			    if (k == i)
3008 				found = TRUE;
3009 			    else
3010 				possible = TRUE;
3011 
3012 			    if (gap == &ucmds)
3013 				cmdidx = CMD_USER;
3014 			    else
3015 				cmdidx = CMD_USER_BUF;
3016 			    argt = uc->uc_argt;
3017 #ifdef FEAT_CMDL_COMPL
3018 			    compl = uc->uc_compl;
3019 # ifdef FEAT_EVAL
3020 			    xp->xp_arg = uc->uc_compl_arg;
3021 			    xp->xp_scriptID = uc->uc_scriptID;
3022 # endif
3023 #endif
3024 			    /* Do not search for further abbreviations
3025 			     * if this is an exact match
3026 			     */
3027 			    matchlen = k;
3028 			    if (k == i && *np == NUL)
3029 				break;
3030 			}
3031 		    }
3032 		}
3033 		if (gap == &ucmds || j < gap->ga_len)
3034 		    break;
3035 		gap = &ucmds;
3036 	    }
3037 
3038 	    /* The match we found may be followed immediately by a
3039 	     * number.  Move *p back to point to it.
3040 	     */
3041 	    if (found || possible)
3042 		p += matchlen - i;
3043 	}
3044 #endif
3045     }
3046     if (cmdidx == CMD_SIZE)
3047     {
3048 	/* Not still touching the command and it was an illegal one */
3049 	xp->xp_context = EXPAND_UNSUCCESSFUL;
3050 	return NULL;
3051     }
3052 
3053     xp->xp_context = EXPAND_NOTHING; /* Default now that we're past command */
3054 
3055     if (*p == '!')		    /* forced commands */
3056     {
3057 	forceit = TRUE;
3058 	++p;
3059     }
3060 
3061 /*
3062  * 5. parse arguments
3063  */
3064 #ifdef FEAT_USR_CMDS
3065     if (!USER_CMDIDX(cmdidx))
3066 #endif
3067 	argt = cmdnames[(int)cmdidx].cmd_argt;
3068 
3069     arg = skipwhite(p);
3070 
3071     if (cmdidx == CMD_write || cmdidx == CMD_update)
3072     {
3073 	if (*arg == '>')			/* append */
3074 	{
3075 	    if (*++arg == '>')
3076 		++arg;
3077 	    arg = skipwhite(arg);
3078 	}
3079 	else if (*arg == '!' && cmdidx == CMD_write)	/* :w !filter */
3080 	{
3081 	    ++arg;
3082 	    usefilter = TRUE;
3083 	}
3084     }
3085 
3086     if (cmdidx == CMD_read)
3087     {
3088 	usefilter = forceit;			/* :r! filter if forced */
3089 	if (*arg == '!')			/* :r !filter */
3090 	{
3091 	    ++arg;
3092 	    usefilter = TRUE;
3093 	}
3094     }
3095 
3096     if (cmdidx == CMD_lshift || cmdidx == CMD_rshift)
3097     {
3098 	while (*arg == *cmd)	    /* allow any number of '>' or '<' */
3099 	    ++arg;
3100 	arg = skipwhite(arg);
3101     }
3102 
3103     /* Does command allow "+command"? */
3104     if ((argt & EDITCMD) && !usefilter && *arg == '+')
3105     {
3106 	/* Check if we're in the +command */
3107 	p = arg + 1;
3108 	arg = skip_cmd_arg(arg, FALSE);
3109 
3110 	/* Still touching the command after '+'? */
3111 	if (*arg == NUL)
3112 	    return p;
3113 
3114 	/* Skip space(s) after +command to get to the real argument */
3115 	arg = skipwhite(arg);
3116     }
3117 
3118     /*
3119      * Check for '|' to separate commands and '"' to start comments.
3120      * Don't do this for ":read !cmd" and ":write !cmd".
3121      */
3122     if ((argt & TRLBAR) && !usefilter)
3123     {
3124 	p = arg;
3125 	/* ":redir @" is not the start of a comment */
3126 	if (cmdidx == CMD_redir && p[0] == '@' && p[1] == '"')
3127 	    p += 2;
3128 	while (*p)
3129 	{
3130 	    if (*p == Ctrl_V)
3131 	    {
3132 		if (p[1] != NUL)
3133 		    ++p;
3134 	    }
3135 	    else if ( (*p == '"' && !(argt & NOTRLCOM))
3136 		    || *p == '|' || *p == '\n')
3137 	    {
3138 		if (*(p - 1) != '\\')
3139 		{
3140 		    if (*p == '|' || *p == '\n')
3141 			return p + 1;
3142 		    return NULL;    /* It's a comment */
3143 		}
3144 	    }
3145 #ifdef FEAT_MBYTE
3146 	    if (has_mbyte)
3147 		p += (*mb_ptr2len_check)(p);
3148 	    else
3149 #endif
3150 		++p;
3151 	}
3152     }
3153 
3154 						/* no arguments allowed */
3155     if (!(argt & EXTRA) && *arg != NUL &&
3156 				    vim_strchr((char_u *)"|\"", *arg) == NULL)
3157 	return NULL;
3158 
3159     /* Find start of last argument (argument just before cursor): */
3160     p = buff + STRLEN(buff);
3161     while (p != arg && *p != ' ' && *p != TAB)
3162 	p--;
3163     if (*p == ' ' || *p == TAB)
3164 	p++;
3165     xp->xp_pattern = p;
3166 
3167     if (argt & XFILE)
3168     {
3169 	int in_quote = FALSE;
3170 	char_u *bow = NULL;	/* Beginning of word */
3171 
3172 	/*
3173 	 * Allow spaces within back-quotes to count as part of the argument
3174 	 * being expanded.
3175 	 */
3176 	xp->xp_pattern = skipwhite(arg);
3177 	for (p = xp->xp_pattern; *p; )
3178 	{
3179 	    if (*p == '\\' && p[1])
3180 		++p;
3181 #ifdef SPACE_IN_FILENAME
3182 	    else if (vim_iswhite(*p) && (!(argt & NOSPC) || usefilter))
3183 #else
3184 	    else if (vim_iswhite(*p))
3185 #endif
3186 	    {
3187 		p = skipwhite(p);
3188 		if (in_quote)
3189 		    bow = p;
3190 		else
3191 		    xp->xp_pattern = p;
3192 		--p;
3193 	    }
3194 	    else if (*p == '`')
3195 	    {
3196 		if (!in_quote)
3197 		{
3198 		    xp->xp_pattern = p;
3199 		    bow = p + 1;
3200 		}
3201 		in_quote = !in_quote;
3202 	    }
3203 #ifdef FEAT_MBYTE
3204 	    if (has_mbyte)
3205 		p += (*mb_ptr2len_check)(p);
3206 	    else
3207 #endif
3208 		++p;
3209 	}
3210 
3211 	/*
3212 	 * If we are still inside the quotes, and we passed a space, just
3213 	 * expand from there.
3214 	 */
3215 	if (bow != NULL && in_quote)
3216 	    xp->xp_pattern = bow;
3217 	xp->xp_context = EXPAND_FILES;
3218 
3219 	/* Check for environment variable */
3220 	if (*xp->xp_pattern == '$'
3221 #if defined(MSDOS) || defined(MSWIN) || defined(OS2)
3222 		|| *xp->xp_pattern == '%'
3223 #endif
3224 		)
3225 	{
3226 	    for (p = xp->xp_pattern + 1; *p != NUL; ++p)
3227 		if (!vim_isIDc(*p))
3228 		    break;
3229 	    if (*p == NUL)
3230 	    {
3231 		xp->xp_context = EXPAND_ENV_VARS;
3232 		++xp->xp_pattern;
3233 #if defined(FEAT_USR_CMDS) && defined(FEAT_CMDL_COMPL)
3234 		/* Avoid that the assignment uses EXPAND_FILES again. */
3235 		if (compl != EXPAND_USER_DEFINED)
3236 		    compl = EXPAND_ENV_VARS;
3237 #endif
3238 	    }
3239 	}
3240     }
3241 
3242 /*
3243  * 6. switch on command name
3244  */
3245     switch (cmdidx)
3246     {
3247 	case CMD_cd:
3248 	case CMD_chdir:
3249 	case CMD_lcd:
3250 	case CMD_lchdir:
3251 	    if (xp->xp_context == EXPAND_FILES)
3252 		xp->xp_context = EXPAND_DIRECTORIES;
3253 	    break;
3254 	case CMD_help:
3255 	    xp->xp_context = EXPAND_HELP;
3256 	    xp->xp_pattern = arg;
3257 	    break;
3258 
3259 	/* Command modifiers: return the argument. */
3260 	case CMD_aboveleft:
3261 	case CMD_belowright:
3262 	case CMD_botright:
3263 	case CMD_browse:
3264 	case CMD_confirm:
3265 	case CMD_folddoclosed:
3266 	case CMD_folddoopen:
3267 	case CMD_hide:
3268 	case CMD_keepalt:
3269 	case CMD_keepjumps:
3270 	case CMD_keepmarks:
3271 	case CMD_leftabove:
3272 	case CMD_lockmarks:
3273 	case CMD_rightbelow:
3274 	case CMD_silent:
3275 	case CMD_topleft:
3276 	case CMD_verbose:
3277 	case CMD_vertical:
3278 	    return arg;
3279 
3280 #ifdef FEAT_SEARCH_EXTRA
3281 	case CMD_match:
3282 	    if (*arg == NUL || !ends_excmd(*arg))
3283 	    {
3284 		/* Dummy call to clear variables. */
3285 		set_context_in_highlight_cmd(xp, (char_u *)"link n");
3286 		xp->xp_context = EXPAND_HIGHLIGHT;
3287 		xp->xp_pattern = arg;
3288 		arg = skipwhite(skiptowhite(arg));
3289 		if (*arg != NUL)
3290 		{
3291 		    xp->xp_context = EXPAND_NOTHING;
3292 		    arg = skip_regexp(arg + 1, *arg, p_magic, NULL);
3293 		}
3294 	    }
3295 	    return find_nextcmd(arg);
3296 #endif
3297 
3298 #ifdef FEAT_CMDL_COMPL
3299 /*
3300  * All completion for the +cmdline_compl feature goes here.
3301  */
3302 
3303 # ifdef FEAT_USR_CMDS
3304 	case CMD_command:
3305 	    /* Check for attributes */
3306 	    while (*arg == '-')
3307 	    {
3308 		arg++;	    /* Skip "-" */
3309 		p = skiptowhite(arg);
3310 		if (*p == NUL)
3311 		{
3312 		    /* Cursor is still in the attribute */
3313 		    p = vim_strchr(arg, '=');
3314 		    if (p == NULL)
3315 		    {
3316 			/* No "=", so complete attribute names */
3317 			xp->xp_context = EXPAND_USER_CMD_FLAGS;
3318 			xp->xp_pattern = arg;
3319 			return NULL;
3320 		    }
3321 
3322 		    /* For the -complete and -nargs attributes, we complete
3323 		     * their arguments as well.
3324 		     */
3325 		    if (STRNICMP(arg, "complete", p - arg) == 0)
3326 		    {
3327 			xp->xp_context = EXPAND_USER_COMPLETE;
3328 			xp->xp_pattern = p + 1;
3329 			return NULL;
3330 		    }
3331 		    else if (STRNICMP(arg, "nargs", p - arg) == 0)
3332 		    {
3333 			xp->xp_context = EXPAND_USER_NARGS;
3334 			xp->xp_pattern = p + 1;
3335 			return NULL;
3336 		    }
3337 		    return NULL;
3338 		}
3339 		arg = skipwhite(p);
3340 	    }
3341 
3342 	    /* After the attributes comes the new command name */
3343 	    p = skiptowhite(arg);
3344 	    if (*p == NUL)
3345 	    {
3346 		xp->xp_context = EXPAND_USER_COMMANDS;
3347 		xp->xp_pattern = arg;
3348 		break;
3349 	    }
3350 
3351 	    /* And finally comes a normal command */
3352 	    return skipwhite(p);
3353 
3354 	case CMD_delcommand:
3355 	    xp->xp_context = EXPAND_USER_COMMANDS;
3356 	    xp->xp_pattern = arg;
3357 	    break;
3358 # endif
3359 
3360 	case CMD_global:
3361 	case CMD_vglobal:
3362 	    delim = *arg;	    /* get the delimiter */
3363 	    if (delim)
3364 		++arg;		    /* skip delimiter if there is one */
3365 
3366 	    while (arg[0] != NUL && arg[0] != delim)
3367 	    {
3368 		if (arg[0] == '\\' && arg[1] != NUL)
3369 		    ++arg;
3370 		++arg;
3371 	    }
3372 	    if (arg[0] != NUL)
3373 		return arg + 1;
3374 	    break;
3375 	case CMD_and:
3376 	case CMD_substitute:
3377 	    delim = *arg;
3378 	    if (delim)
3379 	    {
3380 		/* skip "from" part */
3381 		++arg;
3382 		arg = skip_regexp(arg, delim, p_magic, NULL);
3383 	    }
3384 	    /* skip "to" part */
3385 	    while (arg[0] != NUL && arg[0] != delim)
3386 	    {
3387 		if (arg[0] == '\\' && arg[1] != NUL)
3388 		    ++arg;
3389 		++arg;
3390 	    }
3391 	    if (arg[0] != NUL)	/* skip delimiter */
3392 		++arg;
3393 	    while (arg[0] && vim_strchr((char_u *)"|\"#", arg[0]) == NULL)
3394 		++arg;
3395 	    if (arg[0] != NUL)
3396 		return arg;
3397 	    break;
3398 	case CMD_isearch:
3399 	case CMD_dsearch:
3400 	case CMD_ilist:
3401 	case CMD_dlist:
3402 	case CMD_ijump:
3403 	case CMD_psearch:
3404 	case CMD_djump:
3405 	case CMD_isplit:
3406 	case CMD_dsplit:
3407 	    arg = skipwhite(skipdigits(arg));	    /* skip count */
3408 	    if (*arg == '/')	/* Match regexp, not just whole words */
3409 	    {
3410 		for (++arg; *arg && *arg != '/'; arg++)
3411 		    if (*arg == '\\' && arg[1] != NUL)
3412 			arg++;
3413 		if (*arg)
3414 		{
3415 		    arg = skipwhite(arg + 1);
3416 
3417 		    /* Check for trailing illegal characters */
3418 		    if (*arg && vim_strchr((char_u *)"|\"\n", *arg) == NULL)
3419 			xp->xp_context = EXPAND_NOTHING;
3420 		    else
3421 			return arg;
3422 		}
3423 	    }
3424 	    break;
3425 #ifdef FEAT_AUTOCMD
3426 	case CMD_autocmd:
3427 	    return set_context_in_autocmd(xp, arg, FALSE);
3428 
3429 	case CMD_doautocmd:
3430 	    return set_context_in_autocmd(xp, arg, TRUE);
3431 #endif
3432 	case CMD_set:
3433 	    set_context_in_set_cmd(xp, arg, 0);
3434 	    break;
3435 	case CMD_setglobal:
3436 	    set_context_in_set_cmd(xp, arg, OPT_GLOBAL);
3437 	    break;
3438 	case CMD_setlocal:
3439 	    set_context_in_set_cmd(xp, arg, OPT_LOCAL);
3440 	    break;
3441 	case CMD_tag:
3442 	case CMD_stag:
3443 	case CMD_ptag:
3444 	case CMD_tselect:
3445 	case CMD_stselect:
3446 	case CMD_ptselect:
3447 	case CMD_tjump:
3448 	case CMD_stjump:
3449 	case CMD_ptjump:
3450 	    xp->xp_context = EXPAND_TAGS;
3451 	    xp->xp_pattern = arg;
3452 	    break;
3453 	case CMD_augroup:
3454 	    xp->xp_context = EXPAND_AUGROUP;
3455 	    xp->xp_pattern = arg;
3456 	    break;
3457 #ifdef FEAT_SYN_HL
3458 	case CMD_syntax:
3459 	    set_context_in_syntax_cmd(xp, arg);
3460 	    break;
3461 #endif
3462 #ifdef FEAT_EVAL
3463 	case CMD_let:
3464 	case CMD_if:
3465 	case CMD_elseif:
3466 	case CMD_while:
3467 	case CMD_echo:
3468 	case CMD_echon:
3469 	case CMD_execute:
3470 	case CMD_echomsg:
3471 	case CMD_echoerr:
3472 	case CMD_call:
3473 	case CMD_return:
3474 	    set_context_for_expression(xp, arg, cmdidx);
3475 	    break;
3476 
3477 	case CMD_unlet:
3478 	    while ((xp->xp_pattern = vim_strchr(arg, ' ')) != NULL)
3479 		arg = xp->xp_pattern + 1;
3480 	    xp->xp_context = EXPAND_USER_VARS;
3481 	    xp->xp_pattern = arg;
3482 	    break;
3483 
3484 	case CMD_function:
3485 	case CMD_delfunction:
3486 	    xp->xp_context = EXPAND_USER_FUNC;
3487 	    xp->xp_pattern = arg;
3488 	    break;
3489 
3490 	case CMD_echohl:
3491 	    xp->xp_context = EXPAND_HIGHLIGHT;
3492 	    xp->xp_pattern = arg;
3493 	    break;
3494 #endif
3495 	case CMD_highlight:
3496 	    set_context_in_highlight_cmd(xp, arg);
3497 	    break;
3498 #ifdef FEAT_LISTCMDS
3499 	case CMD_bdelete:
3500 	case CMD_bwipeout:
3501 	case CMD_bunload:
3502 	    while ((xp->xp_pattern = vim_strchr(arg, ' ')) != NULL)
3503 		arg = xp->xp_pattern + 1;
3504 	    /*FALLTHROUGH*/
3505 	case CMD_buffer:
3506 	case CMD_sbuffer:
3507 	case CMD_checktime:
3508 	    xp->xp_context = EXPAND_BUFFERS;
3509 	    xp->xp_pattern = arg;
3510 	    break;
3511 #endif
3512 #ifdef FEAT_USR_CMDS
3513 	case CMD_USER:
3514 	case CMD_USER_BUF:
3515 	    if (compl != EXPAND_NOTHING)
3516 	    {
3517 		/* XFILE: file names are handled above */
3518 		if (!(argt & XFILE))
3519 		{
3520 # ifdef FEAT_MENU
3521 		    if (compl == EXPAND_MENUS)
3522 			return set_context_in_menu_cmd(xp, cmd, arg, forceit);
3523 # endif
3524 		    if (compl == EXPAND_COMMANDS)
3525 			return arg;
3526 		    if (compl == EXPAND_MAPPINGS)
3527 			return set_context_in_map_cmd(xp, (char_u *)"map",
3528 					 arg, forceit, FALSE, FALSE, CMD_map);
3529 		    while ((xp->xp_pattern = vim_strchr(arg, ' ')) != NULL)
3530 			arg = xp->xp_pattern + 1;
3531 		    xp->xp_pattern = arg;
3532 		}
3533 		xp->xp_context = compl;
3534 	    }
3535 	    break;
3536 #endif
3537 	case CMD_map:	    case CMD_noremap:
3538 	case CMD_nmap:	    case CMD_nnoremap:
3539 	case CMD_vmap:	    case CMD_vnoremap:
3540 	case CMD_omap:	    case CMD_onoremap:
3541 	case CMD_imap:	    case CMD_inoremap:
3542 	case CMD_cmap:	    case CMD_cnoremap:
3543 	    return set_context_in_map_cmd(xp, cmd, arg, forceit,
3544 							FALSE, FALSE, cmdidx);
3545 	case CMD_unmap:
3546 	case CMD_nunmap:
3547 	case CMD_vunmap:
3548 	case CMD_ounmap:
3549 	case CMD_iunmap:
3550 	case CMD_cunmap:
3551 	    return set_context_in_map_cmd(xp, cmd, arg, forceit,
3552 							 FALSE, TRUE, cmdidx);
3553 	case CMD_abbreviate:	case CMD_noreabbrev:
3554 	case CMD_cabbrev:	case CMD_cnoreabbrev:
3555 	case CMD_iabbrev:	case CMD_inoreabbrev:
3556 	    return set_context_in_map_cmd(xp, cmd, arg, forceit,
3557 							 TRUE, FALSE, cmdidx);
3558 	case CMD_unabbreviate:
3559 	case CMD_cunabbrev:
3560 	case CMD_iunabbrev:
3561 	    return set_context_in_map_cmd(xp, cmd, arg, forceit,
3562 							  TRUE, TRUE, cmdidx);
3563 #ifdef FEAT_MENU
3564 	case CMD_menu:	    case CMD_noremenu:	    case CMD_unmenu:
3565 	case CMD_amenu:	    case CMD_anoremenu:	    case CMD_aunmenu:
3566 	case CMD_nmenu:	    case CMD_nnoremenu:	    case CMD_nunmenu:
3567 	case CMD_vmenu:	    case CMD_vnoremenu:	    case CMD_vunmenu:
3568 	case CMD_omenu:	    case CMD_onoremenu:	    case CMD_ounmenu:
3569 	case CMD_imenu:	    case CMD_inoremenu:	    case CMD_iunmenu:
3570 	case CMD_cmenu:	    case CMD_cnoremenu:	    case CMD_cunmenu:
3571 	case CMD_tmenu:				    case CMD_tunmenu:
3572 	case CMD_popup:	    case CMD_tearoff:	    case CMD_emenu:
3573 	    return set_context_in_menu_cmd(xp, cmd, arg, forceit);
3574 #endif
3575 
3576 	case CMD_colorscheme:
3577 	    xp->xp_context = EXPAND_COLORS;
3578 	    xp->xp_pattern = arg;
3579 	    break;
3580 
3581 	case CMD_compiler:
3582 	    xp->xp_context = EXPAND_COMPILER;
3583 	    xp->xp_pattern = arg;
3584 	    break;
3585 
3586 #if (defined(HAVE_LOCALE_H) || defined(X_LOCALE)) \
3587 	&& (defined(FEAT_GETTEXT) || defined(FEAT_MBYTE))
3588 	case CMD_language:
3589 	    if (*skiptowhite(arg) == NUL)
3590 	    {
3591 		xp->xp_context = EXPAND_LANGUAGE;
3592 		xp->xp_pattern = arg;
3593 	    }
3594 	    else
3595 		xp->xp_context = EXPAND_NOTHING;
3596 	    break;
3597 #endif
3598 
3599 #endif /* FEAT_CMDL_COMPL */
3600 
3601 	default:
3602 	    break;
3603     }
3604     return NULL;
3605 }
3606 
3607 /*
3608  * skip a range specifier of the form: addr [,addr] [;addr] ..
3609  *
3610  * Backslashed delimiters after / or ? will be skipped, and commands will
3611  * not be expanded between /'s and ?'s or after "'".
3612  *
3613  * Returns the "cmd" pointer advanced to beyond the range.
3614  */
3615     char_u *
3616 skip_range(cmd, ctx)
3617     char_u	*cmd;
3618     int		*ctx;	/* pointer to xp_context or NULL */
3619 {
3620     int		delim;
3621 
3622     while (*cmd != NUL && (vim_isspace(*cmd) || VIM_ISDIGIT(*cmd) ||
3623 			    vim_strchr((char_u *)".$%'/?-+,;", *cmd) != NULL))
3624     {
3625 	if (*cmd == '\'')
3626 	{
3627 	    if (*++cmd == NUL && ctx != NULL)
3628 		*ctx = EXPAND_NOTHING;
3629 	}
3630 	else if (*cmd == '/' || *cmd == '?')
3631 	{
3632 	    delim = *cmd++;
3633 	    while (*cmd != NUL && *cmd != delim)
3634 		if (*cmd++ == '\\' && *cmd != NUL)
3635 		    ++cmd;
3636 	    if (*cmd == NUL && ctx != NULL)
3637 		*ctx = EXPAND_NOTHING;
3638 	}
3639 	if (*cmd != NUL)
3640 	    ++cmd;
3641     }
3642     return cmd;
3643 }
3644 
3645 /*
3646  * get a single EX address
3647  *
3648  * Set ptr to the next character after the part that was interpreted.
3649  * Set ptr to NULL when an error is encountered.
3650  *
3651  * Return MAXLNUM when no Ex address was found.
3652  */
3653     static linenr_T
3654 get_address(ptr, skip, to_other_file)
3655     char_u	**ptr;
3656     int		skip;	    /* only skip the address, don't use it */
3657     int		to_other_file;  /* flag: may jump to other file */
3658 {
3659     int		c;
3660     int		i;
3661     long	n;
3662     char_u	*cmd;
3663     pos_T	pos;
3664     pos_T	*fp;
3665     linenr_T	lnum;
3666 
3667     cmd = skipwhite(*ptr);
3668     lnum = MAXLNUM;
3669     do
3670     {
3671 	switch (*cmd)
3672 	{
3673 	    case '.':			    /* '.' - Cursor position */
3674 			++cmd;
3675 			lnum = curwin->w_cursor.lnum;
3676 			break;
3677 
3678 	    case '$':			    /* '$' - last line */
3679 			++cmd;
3680 			lnum = curbuf->b_ml.ml_line_count;
3681 			break;
3682 
3683 	    case '\'':			    /* ''' - mark */
3684 			if (*++cmd == NUL)
3685 			{
3686 			    cmd = NULL;
3687 			    goto error;
3688 			}
3689 			if (skip)
3690 			    ++cmd;
3691 			else
3692 			{
3693 			    /* Only accept a mark in another file when it is
3694 			     * used by itself: ":'M". */
3695 			    fp = getmark(*cmd, to_other_file && cmd[1] == NUL);
3696 			    ++cmd;
3697 			    if (fp == (pos_T *)-1)
3698 				/* Jumped to another file. */
3699 				lnum = curwin->w_cursor.lnum;
3700 			    else
3701 			    {
3702 				if (check_mark(fp) == FAIL)
3703 				{
3704 				    cmd = NULL;
3705 				    goto error;
3706 				}
3707 				lnum = fp->lnum;
3708 			    }
3709 			}
3710 			break;
3711 
3712 	    case '/':
3713 	    case '?':			/* '/' or '?' - search */
3714 			c = *cmd++;
3715 			if (skip)	/* skip "/pat/" */
3716 			{
3717 			    cmd = skip_regexp(cmd, c, (int)p_magic, NULL);
3718 			    if (*cmd == c)
3719 				++cmd;
3720 			}
3721 			else
3722 			{
3723 			    pos = curwin->w_cursor; /* save curwin->w_cursor */
3724 			    /*
3725 			     * When '/' or '?' follows another address, start
3726 			     * from there.
3727 			     */
3728 			    if (lnum != MAXLNUM)
3729 				curwin->w_cursor.lnum = lnum;
3730 			    /*
3731 			     * Start a forward search at the end of the line.
3732 			     * Start a backward search at the start of the line.
3733 			     * This makes sure we never match in the current
3734 			     * line, and can match anywhere in the
3735 			     * next/previous line.
3736 			     */
3737 			    if (c == '/')
3738 				curwin->w_cursor.col = MAXCOL;
3739 			    else
3740 				curwin->w_cursor.col = 0;
3741 			    searchcmdlen = 0;
3742 			    if (!do_search(NULL, c, cmd, 1L,
3743 				      SEARCH_HIS + SEARCH_MSG + SEARCH_START))
3744 			    {
3745 				curwin->w_cursor = pos;
3746 				cmd = NULL;
3747 				goto error;
3748 			    }
3749 			    lnum = curwin->w_cursor.lnum;
3750 			    curwin->w_cursor = pos;
3751 			    /* adjust command string pointer */
3752 			    cmd += searchcmdlen;
3753 			}
3754 			break;
3755 
3756 	    case '\\':		    /* "\?", "\/" or "\&", repeat search */
3757 			++cmd;
3758 			if (*cmd == '&')
3759 			    i = RE_SUBST;
3760 			else if (*cmd == '?' || *cmd == '/')
3761 			    i = RE_SEARCH;
3762 			else
3763 			{
3764 			    EMSG(_(e_backslash));
3765 			    cmd = NULL;
3766 			    goto error;
3767 			}
3768 
3769 			if (!skip)
3770 			{
3771 			    /*
3772 			     * When search follows another address, start from
3773 			     * there.
3774 			     */
3775 			    if (lnum != MAXLNUM)
3776 				pos.lnum = lnum;
3777 			    else
3778 				pos.lnum = curwin->w_cursor.lnum;
3779 
3780 			    /*
3781 			     * Start the search just like for the above
3782 			     * do_search().
3783 			     */
3784 			    if (*cmd != '?')
3785 				pos.col = MAXCOL;
3786 			    else
3787 				pos.col = 0;
3788 			    if (searchit(curwin, curbuf, &pos,
3789 					*cmd == '?' ? BACKWARD : FORWARD,
3790 					(char_u *)"", 1L,
3791 					SEARCH_MSG + SEARCH_START, i) != FAIL)
3792 				lnum = pos.lnum;
3793 			    else
3794 			    {
3795 				cmd = NULL;
3796 				goto error;
3797 			    }
3798 			}
3799 			++cmd;
3800 			break;
3801 
3802 	    default:
3803 			if (VIM_ISDIGIT(*cmd))	/* absolute line number */
3804 			    lnum = getdigits(&cmd);
3805 	}
3806 
3807 	for (;;)
3808 	{
3809 	    cmd = skipwhite(cmd);
3810 	    if (*cmd != '-' && *cmd != '+' && !VIM_ISDIGIT(*cmd))
3811 		break;
3812 
3813 	    if (lnum == MAXLNUM)
3814 		lnum = curwin->w_cursor.lnum;	/* "+1" is same as ".+1" */
3815 	    if (VIM_ISDIGIT(*cmd))
3816 		i = '+';		/* "number" is same as "+number" */
3817 	    else
3818 		i = *cmd++;
3819 	    if (!VIM_ISDIGIT(*cmd))	/* '+' is '+1', but '+0' is not '+1' */
3820 		n = 1;
3821 	    else
3822 		n = getdigits(&cmd);
3823 	    if (i == '-')
3824 		lnum -= n;
3825 	    else
3826 		lnum += n;
3827 	}
3828     } while (*cmd == '/' || *cmd == '?');
3829 
3830 error:
3831     *ptr = cmd;
3832     return lnum;
3833 }
3834 
3835 /*
3836  * Function called for command which is Not Implemented.  NI!
3837  */
3838     void
3839 ex_ni(eap)
3840     exarg_T	*eap;
3841 {
3842     if (!eap->skip)
3843 	eap->errmsg = (char_u *)N_("E319: Sorry, the command is not available in this version");
3844 }
3845 
3846 #if !defined(FEAT_PERL) || !defined(FEAT_PYTHON) || !defined(FEAT_TCL) \
3847 	|| !defined(FEAT_RUBY) || !defined(FEAT_MZSCHEME)
3848 /*
3849  * Function called for script command which is Not Implemented.  NI!
3850  * Skips over ":perl <<EOF" constructs.
3851  */
3852     static void
3853 ex_script_ni(eap)
3854     exarg_T	*eap;
3855 {
3856     if (!eap->skip)
3857 	ex_ni(eap);
3858     else
3859 	vim_free(script_get(eap, eap->arg));
3860 }
3861 #endif
3862 
3863 /*
3864  * Check range in Ex command for validity.
3865  * Return NULL when valid, error message when invalid.
3866  */
3867     static char_u *
3868 invalid_range(eap)
3869     exarg_T	*eap;
3870 {
3871     if (       eap->line1 < 0
3872 	    || eap->line2 < 0
3873 	    || eap->line1 > eap->line2
3874 	    || ((eap->argt & RANGE)
3875 		&& !(eap->argt & NOTADR)
3876 		&& eap->line2 > curbuf->b_ml.ml_line_count
3877 #ifdef FEAT_DIFF
3878 			+ (eap->cmdidx == CMD_diffget)
3879 #endif
3880 		))
3881 	return (char_u *)_(e_invrange);
3882     return NULL;
3883 }
3884 
3885 /*
3886  * Correct the range for zero line number, if required.
3887  */
3888     static void
3889 correct_range(eap)
3890     exarg_T	*eap;
3891 {
3892     if (!(eap->argt & ZEROR))	    /* zero in range not allowed */
3893     {
3894 	if (eap->line1 == 0)
3895 	    eap->line1 = 1;
3896 	if (eap->line2 == 0)
3897 	    eap->line2 = 1;
3898     }
3899 }
3900 
3901 /*
3902  * Expand file name in Ex command argument.
3903  * Return FAIL for failure, OK otherwise.
3904  */
3905     int
3906 expand_filename(eap, cmdlinep, errormsgp)
3907     exarg_T	*eap;
3908     char_u	**cmdlinep;
3909     char_u	**errormsgp;
3910 {
3911     int		has_wildcards;	/* need to expand wildcards */
3912     char_u	*repl;
3913     int		srclen;
3914     char_u	*p;
3915     int		n;
3916 
3917     /*
3918      * Decide to expand wildcards *before* replacing '%', '#', etc.  If
3919      * the file name contains a wildcard it should not cause expanding.
3920      * (it will be expanded anyway if there is a wildcard before replacing).
3921      */
3922     has_wildcards = mch_has_wildcard(eap->arg);
3923     for (p = eap->arg; *p; )
3924     {
3925 #ifdef FEAT_EVAL
3926 	/* Skip over `=expr`, wildcards in it are not expanded. */
3927 	if (p[0] == '`' && p[1] == '=')
3928 	{
3929 	    p += 2;
3930 	    (void)skip_expr(&p);
3931 	    if (*p == '`')
3932 		++p;
3933 	    continue;
3934 	}
3935 #endif
3936 	/*
3937 	 * Quick check if this cannot be the start of a special string.
3938 	 * Also removes backslash before '%', '#' and '<'.
3939 	 */
3940 	if (vim_strchr((char_u *)"%#<", *p) == NULL)
3941 	{
3942 	    ++p;
3943 	    continue;
3944 	}
3945 
3946 	/*
3947 	 * Try to find a match at this position.
3948 	 */
3949 	repl = eval_vars(p, &srclen, &(eap->do_ecmd_lnum), errormsgp, eap->arg);
3950 	if (*errormsgp != NULL)		/* error detected */
3951 	    return FAIL;
3952 	if (repl == NULL)		/* no match found */
3953 	{
3954 	    p += srclen;
3955 	    continue;
3956 	}
3957 
3958 	/* Need to escape white space et al. with a backslash.  Don't do this
3959 	 * for shell commands (may have to use quotes instead).  Don't do this
3960 	 * for non-unix systems when there is a single argument (spaces don't
3961 	 * separate arguments then). */
3962 	if (!eap->usefilter
3963 		&& eap->cmdidx != CMD_bang
3964 		&& eap->cmdidx != CMD_make
3965 		&& eap->cmdidx != CMD_grep
3966 		&& eap->cmdidx != CMD_grepadd
3967 #ifndef UNIX
3968 		&& !(eap->argt & NOSPC)
3969 #endif
3970 		)
3971 	{
3972 	    char_u	*l;
3973 #ifdef BACKSLASH_IN_FILENAME
3974 	    /* Don't escape a backslash here, because rem_backslash() doesn't
3975 	     * remove it later. */
3976 	    static char_u *nobslash = (char_u *)" \t\"|";
3977 # define ESCAPE_CHARS nobslash
3978 #else
3979 # define ESCAPE_CHARS escape_chars
3980 #endif
3981 
3982 	    for (l = repl; *l; ++l)
3983 		if (vim_strchr(ESCAPE_CHARS, *l) != NULL)
3984 		{
3985 		    l = vim_strsave_escaped(repl, ESCAPE_CHARS);
3986 		    if (l != NULL)
3987 		    {
3988 			vim_free(repl);
3989 			repl = l;
3990 		    }
3991 		    break;
3992 		}
3993 	}
3994 
3995 	/* For a shell command a '!' must be escaped. */
3996 	if ((eap->usefilter || eap->cmdidx == CMD_bang)
3997 		&& vim_strchr(repl, '!') != NULL)
3998 	{
3999 	    char_u	*l;
4000 
4001 	    l = vim_strsave_escaped(repl, (char_u *)"!");
4002 	    if (l != NULL)
4003 	    {
4004 		vim_free(repl);
4005 		repl = l;
4006 		/* For a sh-like shell escape it another time. */
4007 		if (strstr((char *)p_sh, "sh") != NULL)
4008 		{
4009 		    l = vim_strsave_escaped(repl, (char_u *)"!");
4010 		    if (l != NULL)
4011 		    {
4012 			vim_free(repl);
4013 			repl = l;
4014 		    }
4015 		}
4016 	    }
4017 	}
4018 
4019 	p = repl_cmdline(eap, p, srclen, repl, cmdlinep);
4020 	vim_free(repl);
4021 	if (p == NULL)
4022 	    return FAIL;
4023     }
4024 
4025     /*
4026      * One file argument: Expand wildcards.
4027      * Don't do this with ":r !command" or ":w !command".
4028      */
4029     if ((eap->argt & NOSPC) && !eap->usefilter)
4030     {
4031 	/*
4032 	 * May do this twice:
4033 	 * 1. Replace environment variables.
4034 	 * 2. Replace any other wildcards, remove backslashes.
4035 	 */
4036 	for (n = 1; n <= 2; ++n)
4037 	{
4038 	    if (n == 2)
4039 	    {
4040 #ifdef UNIX
4041 		/*
4042 		 * Only for Unix we check for more than one file name.
4043 		 * For other systems spaces are considered to be part
4044 		 * of the file name.
4045 		 * Only check here if there is no wildcard, otherwise
4046 		 * ExpandOne() will check for errors. This allows
4047 		 * ":e `ls ve*.c`" on Unix.
4048 		 */
4049 		if (!has_wildcards)
4050 		    for (p = eap->arg; *p; ++p)
4051 		    {
4052 			/* skip escaped characters */
4053 			if (p[1] && (*p == '\\' || *p == Ctrl_V))
4054 			    ++p;
4055 			else if (vim_iswhite(*p))
4056 			{
4057 			    *errormsgp = (char_u *)_("E172: Only one file name allowed");
4058 			    return FAIL;
4059 			}
4060 		    }
4061 #endif
4062 
4063 		/*
4064 		 * Halve the number of backslashes (this is Vi compatible).
4065 		 * For Unix and OS/2, when wildcards are expanded, this is
4066 		 * done by ExpandOne() below.
4067 		 */
4068 #if defined(UNIX) || defined(OS2)
4069 		if (!has_wildcards)
4070 #endif
4071 		    backslash_halve(eap->arg);
4072 #ifdef MACOS_CLASSIC
4073 		/*
4074 		 * translate unix-like path components
4075 		 */
4076 		slash_n_colon_adjust(eap->arg);
4077 #endif
4078 	    }
4079 
4080 	    if (has_wildcards)
4081 	    {
4082 		if (n == 1)
4083 		{
4084 		    /*
4085 		     * First loop: May expand environment variables.  This
4086 		     * can be done much faster with expand_env() than with
4087 		     * something else (e.g., calling a shell).
4088 		     * After expanding environment variables, check again
4089 		     * if there are still wildcards present.
4090 		     */
4091 		    if (vim_strchr(eap->arg, '$') != NULL
4092 			    || vim_strchr(eap->arg, '~') != NULL)
4093 		    {
4094 			expand_env_esc(eap->arg, NameBuff, MAXPATHL, TRUE);
4095 			has_wildcards = mch_has_wildcard(NameBuff);
4096 			p = NameBuff;
4097 		    }
4098 		    else
4099 			p = NULL;
4100 		}
4101 		else /* n == 2 */
4102 		{
4103 		    expand_T	xpc;
4104 
4105 		    ExpandInit(&xpc);
4106 		    xpc.xp_context = EXPAND_FILES;
4107 		    p = ExpandOne(&xpc, eap->arg, NULL,
4108 					    WILD_LIST_NOTFOUND|WILD_ADD_SLASH,
4109 						   WILD_EXPAND_FREE);
4110 		    ExpandCleanup(&xpc);
4111 		    if (p == NULL)
4112 			return FAIL;
4113 		}
4114 		if (p != NULL)
4115 		{
4116 		    (void)repl_cmdline(eap, eap->arg, (int)STRLEN(eap->arg),
4117 								 p, cmdlinep);
4118 		    if (n == 2)	/* p came from ExpandOne() */
4119 			vim_free(p);
4120 		}
4121 	    }
4122 	}
4123     }
4124     return OK;
4125 }
4126 
4127 /*
4128  * Replace part of the command line, keeping eap->cmd, eap->arg and
4129  * eap->nextcmd correct.
4130  * "src" points to the part that is to be replaced, of length "srclen".
4131  * "repl" is the replacement string.
4132  * Returns a pointer to the character after the replaced string.
4133  * Returns NULL for failure.
4134  */
4135     static char_u *
4136 repl_cmdline(eap, src, srclen, repl, cmdlinep)
4137     exarg_T	*eap;
4138     char_u	*src;
4139     int		srclen;
4140     char_u	*repl;
4141     char_u	**cmdlinep;
4142 {
4143     int		len;
4144     int		i;
4145     char_u	*new_cmdline;
4146 
4147     /*
4148      * The new command line is build in new_cmdline[].
4149      * First allocate it.
4150      * Careful: a "+cmd" argument may have been NUL terminated.
4151      */
4152     len = (int)STRLEN(repl);
4153     i = (int)(src - *cmdlinep) + (int)STRLEN(src + srclen) + len + 3;
4154     if (eap->nextcmd)
4155 	i += (int)STRLEN(eap->nextcmd);/* add space for next command */
4156     if ((new_cmdline = alloc((unsigned)i)) == NULL)
4157 	return NULL;			/* out of memory! */
4158 
4159     /*
4160      * Copy the stuff before the expanded part.
4161      * Copy the expanded stuff.
4162      * Copy what came after the expanded part.
4163      * Copy the next commands, if there are any.
4164      */
4165     i = (int)(src - *cmdlinep);	/* length of part before match */
4166     mch_memmove(new_cmdline, *cmdlinep, (size_t)i);
4167     mch_memmove(new_cmdline + i, repl, (size_t)len);
4168     i += len;				/* remember the end of the string */
4169     STRCPY(new_cmdline + i, src + srclen);
4170     src = new_cmdline + i;		/* remember where to continue */
4171 
4172     if (eap->nextcmd)			/* append next command */
4173     {
4174 	i = (int)STRLEN(new_cmdline) + 1;
4175 	STRCPY(new_cmdline + i, eap->nextcmd);
4176 	eap->nextcmd = new_cmdline + i;
4177     }
4178     eap->cmd = new_cmdline + (eap->cmd - *cmdlinep);
4179     eap->arg = new_cmdline + (eap->arg - *cmdlinep);
4180     if (eap->do_ecmd_cmd != NULL && eap->do_ecmd_cmd != dollar_command)
4181 	eap->do_ecmd_cmd = new_cmdline + (eap->do_ecmd_cmd - *cmdlinep);
4182     vim_free(*cmdlinep);
4183     *cmdlinep = new_cmdline;
4184 
4185     return src;
4186 }
4187 
4188 /*
4189  * Check for '|' to separate commands and '"' to start comments.
4190  */
4191     void
4192 separate_nextcmd(eap)
4193     exarg_T	*eap;
4194 {
4195     char_u	*p;
4196 
4197     for (p = eap->arg; *p; ++p)
4198     {
4199 	if (*p == Ctrl_V)
4200 	{
4201 	    if (eap->argt & (USECTRLV | XFILE))
4202 		++p;		/* skip CTRL-V and next char */
4203 	    else
4204 		STRCPY(p, p + 1);	/* remove CTRL-V and skip next char */
4205 	    if (*p == NUL)		/* stop at NUL after CTRL-V */
4206 		break;
4207 	}
4208 
4209 #ifdef FEAT_EVAL
4210 	/* Skip over `=expr` when wildcards are expanded. */
4211 	else if (p[0] == '`' && p[1] == '=')
4212 	{
4213 	    p += 2;
4214 	    (void)skip_expr(&p);
4215 	    if (*p == '`')
4216 		++p;
4217 	}
4218 #endif
4219 
4220 	/* Check for '"': start of comment or '|': next command */
4221 	/* :@" and :*" do not start a comment!
4222 	 * :redir @" doesn't either. */
4223 	else if ((*p == '"' && !(eap->argt & NOTRLCOM)
4224 		    && ((eap->cmdidx != CMD_at && eap->cmdidx != CMD_star)
4225 			|| p != eap->arg)
4226 		    && (eap->cmdidx != CMD_redir
4227 			|| p != eap->arg + 1 || p[-1] != '@'))
4228 		|| *p == '|' || *p == '\n')
4229 	{
4230 	    /*
4231 	     * We remove the '\' before the '|', unless USECTRLV is used
4232 	     * AND 'b' is present in 'cpoptions'.
4233 	     */
4234 	    if ((vim_strchr(p_cpo, CPO_BAR) == NULL
4235 			      || !(eap->argt & USECTRLV)) && *(p - 1) == '\\')
4236 	    {
4237 		mch_memmove(p - 1, p, STRLEN(p) + 1);	/* remove the '\' */
4238 		--p;
4239 	    }
4240 	    else
4241 	    {
4242 		eap->nextcmd = check_nextcmd(p);
4243 		*p = NUL;
4244 		break;
4245 	    }
4246 	}
4247 #ifdef FEAT_MBYTE
4248 	else if (has_mbyte)
4249 	    p += (*mb_ptr2len_check)(p) - 1; /* skip bytes of multi-byte char */
4250 #endif
4251     }
4252     if (!(eap->argt & NOTRLCOM))	/* remove trailing spaces */
4253 	del_trailing_spaces(eap->arg);
4254 }
4255 
4256 /*
4257  * get + command from ex argument
4258  */
4259     static char_u *
4260 getargcmd(argp)
4261     char_u **argp;
4262 {
4263     char_u *arg = *argp;
4264     char_u *command = NULL;
4265 
4266     if (*arg == '+')	    /* +[command] */
4267     {
4268 	++arg;
4269 	if (vim_isspace(*arg))
4270 	    command = dollar_command;
4271 	else
4272 	{
4273 	    command = arg;
4274 	    arg = skip_cmd_arg(command, TRUE);
4275 	    if (*arg != NUL)
4276 		*arg++ = NUL;		/* terminate command with NUL */
4277 	}
4278 
4279 	arg = skipwhite(arg);	/* skip over spaces */
4280 	*argp = arg;
4281     }
4282     return command;
4283 }
4284 
4285 /*
4286  * Find end of "+command" argument.  Skip over "\ " and "\\".
4287  */
4288     static char_u *
4289 skip_cmd_arg(p, rembs)
4290     char_u *p;
4291     int	   rembs;	/* TRUE to halve the number of backslashes */
4292 {
4293     while (*p && !vim_isspace(*p))
4294     {
4295 	if (*p == '\\' && p[1] != NUL)
4296 	{
4297 	    if (rembs)
4298 		mch_memmove(p, p + 1, STRLEN(p));
4299 	    else
4300 		++p;
4301 	}
4302 #ifdef FEAT_MBYTE
4303 	if (has_mbyte)
4304 	    p += (*mb_ptr2len_check)(p);
4305 	else
4306 #endif
4307 	    ++p;
4308     }
4309     return p;
4310 }
4311 
4312 /*
4313  * Get "++opt=arg" argument.
4314  * Return FAIL or OK.
4315  */
4316     static int
4317 getargopt(eap)
4318     exarg_T	*eap;
4319 {
4320     char_u	*arg = eap->arg + 2;
4321     int		*pp = NULL;
4322 #ifdef FEAT_MBYTE
4323     char_u	*p;
4324 #endif
4325 
4326     /* ":edit ++[no]bin[ary] file" */
4327     if (STRNCMP(arg, "bin", 3) == 0 || STRNCMP(arg, "nobin", 5) == 0)
4328     {
4329 	if (*arg == 'n')
4330 	{
4331 	    arg += 2;
4332 	    eap->force_bin = FORCE_NOBIN;
4333 	}
4334 	else
4335 	    eap->force_bin = FORCE_BIN;
4336 	if (!checkforcmd(&arg, "binary", 3))
4337 	    return FAIL;
4338 	eap->arg = skipwhite(arg);
4339 	return OK;
4340     }
4341 
4342     if (STRNCMP(arg, "ff", 2) == 0)
4343     {
4344 	arg += 2;
4345 	pp = &eap->force_ff;
4346     }
4347     else if (STRNCMP(arg, "fileformat", 10) == 0)
4348     {
4349 	arg += 10;
4350 	pp = &eap->force_ff;
4351     }
4352 #ifdef FEAT_MBYTE
4353     else if (STRNCMP(arg, "enc", 3) == 0)
4354     {
4355 	arg += 3;
4356 	pp = &eap->force_enc;
4357     }
4358     else if (STRNCMP(arg, "encoding", 8) == 0)
4359     {
4360 	arg += 8;
4361 	pp = &eap->force_enc;
4362     }
4363 #endif
4364 
4365     if (pp == NULL || *arg != '=')
4366 	return FAIL;
4367 
4368     ++arg;
4369     *pp = (int)(arg - eap->cmd);
4370     arg = skip_cmd_arg(arg, FALSE);
4371     eap->arg = skipwhite(arg);
4372     *arg = NUL;
4373 
4374 #ifdef FEAT_MBYTE
4375     if (pp == &eap->force_ff)
4376     {
4377 #endif
4378 	if (check_ff_value(eap->cmd + eap->force_ff) == FAIL)
4379 	    return FAIL;
4380 #ifdef FEAT_MBYTE
4381     }
4382     else
4383     {
4384 	/* Make 'fileencoding' lower case. */
4385 	for (p = eap->cmd + eap->force_enc; *p != NUL; ++p)
4386 	    *p = TOLOWER_ASC(*p);
4387     }
4388 #endif
4389 
4390     return OK;
4391 }
4392 
4393 /*
4394  * ":abbreviate" and friends.
4395  */
4396     static void
4397 ex_abbreviate(eap)
4398     exarg_T	*eap;
4399 {
4400     do_exmap(eap, TRUE);	/* almost the same as mapping */
4401 }
4402 
4403 /*
4404  * ":map" and friends.
4405  */
4406     static void
4407 ex_map(eap)
4408     exarg_T	*eap;
4409 {
4410     /*
4411      * If we are sourcing .exrc or .vimrc in current directory we
4412      * print the mappings for security reasons.
4413      */
4414     if (secure)
4415     {
4416 	secure = 2;
4417 	msg_outtrans(eap->cmd);
4418 	msg_putchar('\n');
4419     }
4420     do_exmap(eap, FALSE);
4421 }
4422 
4423 /*
4424  * ":unmap" and friends.
4425  */
4426     static void
4427 ex_unmap(eap)
4428     exarg_T	*eap;
4429 {
4430     do_exmap(eap, FALSE);
4431 }
4432 
4433 /*
4434  * ":mapclear" and friends.
4435  */
4436     static void
4437 ex_mapclear(eap)
4438     exarg_T	*eap;
4439 {
4440     map_clear(eap->cmd, eap->arg, eap->forceit, FALSE);
4441 }
4442 
4443 /*
4444  * ":abclear" and friends.
4445  */
4446     static void
4447 ex_abclear(eap)
4448     exarg_T	*eap;
4449 {
4450     map_clear(eap->cmd, eap->arg, TRUE, TRUE);
4451 }
4452 
4453 #ifdef FEAT_AUTOCMD
4454     static void
4455 ex_autocmd(eap)
4456     exarg_T	*eap;
4457 {
4458     /*
4459      * Disallow auto commands from .exrc and .vimrc in current
4460      * directory for security reasons.
4461      */
4462     if (secure)
4463     {
4464 	secure = 2;
4465 	eap->errmsg = e_curdir;
4466     }
4467     else if (eap->cmdidx == CMD_autocmd)
4468 	do_autocmd(eap->arg, eap->forceit);
4469     else
4470 	do_augroup(eap->arg, eap->forceit);
4471 }
4472 
4473 /*
4474  * ":doautocmd": Apply the automatic commands to the current buffer.
4475  */
4476     static void
4477 ex_doautocmd(eap)
4478     exarg_T	*eap;
4479 {
4480     (void)do_doautocmd(eap->arg, TRUE);
4481     do_modelines(FALSE);
4482 }
4483 #endif
4484 
4485 #ifdef FEAT_LISTCMDS
4486 /*
4487  * :[N]bunload[!] [N] [bufname] unload buffer
4488  * :[N]bdelete[!] [N] [bufname] delete buffer from buffer list
4489  * :[N]bwipeout[!] [N] [bufname] delete buffer really
4490  */
4491     static void
4492 ex_bunload(eap)
4493     exarg_T	*eap;
4494 {
4495     eap->errmsg = do_bufdel(
4496 	    eap->cmdidx == CMD_bdelete ? DOBUF_DEL
4497 		: eap->cmdidx == CMD_bwipeout ? DOBUF_WIPE
4498 		: DOBUF_UNLOAD, eap->arg,
4499 	    eap->addr_count, (int)eap->line1, (int)eap->line2, eap->forceit);
4500 }
4501 
4502 /*
4503  * :[N]buffer [N]	to buffer N
4504  * :[N]sbuffer [N]	to buffer N
4505  */
4506     static void
4507 ex_buffer(eap)
4508     exarg_T	*eap;
4509 {
4510     if (*eap->arg)
4511 	eap->errmsg = e_trailing;
4512     else
4513     {
4514 	if (eap->addr_count == 0)	/* default is current buffer */
4515 	    goto_buffer(eap, DOBUF_CURRENT, FORWARD, 0);
4516 	else
4517 	    goto_buffer(eap, DOBUF_FIRST, FORWARD, (int)eap->line2);
4518     }
4519 }
4520 
4521 /*
4522  * :[N]bmodified [N]	to next mod. buffer
4523  * :[N]sbmodified [N]	to next mod. buffer
4524  */
4525     static void
4526 ex_bmodified(eap)
4527     exarg_T	*eap;
4528 {
4529     goto_buffer(eap, DOBUF_MOD, FORWARD, (int)eap->line2);
4530 }
4531 
4532 /*
4533  * :[N]bnext [N]	to next buffer
4534  * :[N]sbnext [N]	split and to next buffer
4535  */
4536     static void
4537 ex_bnext(eap)
4538     exarg_T	*eap;
4539 {
4540     goto_buffer(eap, DOBUF_CURRENT, FORWARD, (int)eap->line2);
4541 }
4542 
4543 /*
4544  * :[N]bNext [N]	to previous buffer
4545  * :[N]bprevious [N]	to previous buffer
4546  * :[N]sbNext [N]	split and to previous buffer
4547  * :[N]sbprevious [N]	split and to previous buffer
4548  */
4549     static void
4550 ex_bprevious(eap)
4551     exarg_T	*eap;
4552 {
4553     goto_buffer(eap, DOBUF_CURRENT, BACKWARD, (int)eap->line2);
4554 }
4555 
4556 /*
4557  * :brewind		to first buffer
4558  * :bfirst		to first buffer
4559  * :sbrewind		split and to first buffer
4560  * :sbfirst		split and to first buffer
4561  */
4562     static void
4563 ex_brewind(eap)
4564     exarg_T	*eap;
4565 {
4566     goto_buffer(eap, DOBUF_FIRST, FORWARD, 0);
4567 }
4568 
4569 /*
4570  * :blast		to last buffer
4571  * :sblast		split and to last buffer
4572  */
4573     static void
4574 ex_blast(eap)
4575     exarg_T	*eap;
4576 {
4577     goto_buffer(eap, DOBUF_LAST, BACKWARD, 0);
4578 }
4579 #endif
4580 
4581     int
4582 ends_excmd(c)
4583     int	    c;
4584 {
4585     return (c == NUL || c == '|' || c == '"' || c == '\n');
4586 }
4587 
4588 #if defined(FEAT_SYN_HL) || defined(FEAT_SEARCH_EXTRA) || defined(FEAT_EVAL) \
4589 	|| defined(PROTO)
4590 /*
4591  * Return the next command, after the first '|' or '\n'.
4592  * Return NULL if not found.
4593  */
4594     char_u *
4595 find_nextcmd(p)
4596     char_u	*p;
4597 {
4598     while (*p != '|' && *p != '\n')
4599     {
4600 	if (*p == NUL)
4601 	    return NULL;
4602 	++p;
4603     }
4604     return (p + 1);
4605 }
4606 #endif
4607 
4608 /*
4609  * Check if *p is a separator between Ex commands.
4610  * Return NULL if it isn't, (p + 1) if it is.
4611  */
4612     char_u *
4613 check_nextcmd(p)
4614     char_u	*p;
4615 {
4616     p = skipwhite(p);
4617     if (*p == '|' || *p == '\n')
4618 	return (p + 1);
4619     else
4620 	return NULL;
4621 }
4622 
4623 /*
4624  * - if there are more files to edit
4625  * - and this is the last window
4626  * - and forceit not used
4627  * - and not repeated twice on a row
4628  *    return FAIL and give error message if 'message' TRUE
4629  * return OK otherwise
4630  */
4631     static int
4632 check_more(message, forceit)
4633     int message;	    /* when FALSE check only, no messages */
4634     int forceit;
4635 {
4636     int	    n = ARGCOUNT - curwin->w_arg_idx - 1;
4637 
4638     if (!forceit && only_one_window() && ARGCOUNT > 1 && !arg_had_last
4639 						   && n >= 0 && quitmore == 0)
4640     {
4641 	if (message)
4642 	{
4643 #if defined(FEAT_GUI_DIALOG) || defined(FEAT_CON_DIALOG)
4644 	    if ((p_confirm || cmdmod.confirm) && curbuf->b_fname != NULL)
4645 	    {
4646 		char_u	buff[IOSIZE];
4647 
4648 		if (n == 1)
4649 		    STRCPY(buff, _("1 more file to edit.  Quit anyway?"));
4650 		else
4651 		    sprintf((char *)buff,
4652 			      _("%d more files to edit.  Quit anyway?"), n);
4653 		if (vim_dialog_yesno(VIM_QUESTION, NULL, buff, 1) == VIM_YES)
4654 		    return OK;
4655 		return FAIL;
4656 	    }
4657 #endif
4658 	    if (n == 1)
4659 		EMSG(_("E173: 1 more file to edit"));
4660 	    else
4661 		EMSGN(_("E173: %ld more files to edit"), n);
4662 	    quitmore = 2;	    /* next try to quit is allowed */
4663 	}
4664 	return FAIL;
4665     }
4666     return OK;
4667 }
4668 
4669 #ifdef FEAT_CMDL_COMPL
4670 /*
4671  * Function given to ExpandGeneric() to obtain the list of command names.
4672  */
4673 /*ARGSUSED*/
4674     char_u *
4675 get_command_name(xp, idx)
4676     expand_T	*xp;
4677     int		idx;
4678 {
4679     if (idx >= (int)CMD_SIZE)
4680 # ifdef FEAT_USR_CMDS
4681 	return get_user_command_name(idx);
4682 # else
4683 	return NULL;
4684 # endif
4685     return cmdnames[idx].cmd_name;
4686 }
4687 #endif
4688 
4689 #if defined(FEAT_USR_CMDS) || defined(PROTO)
4690 static int	uc_add_command __ARGS((char_u *name, size_t name_len, char_u *rep, long argt, long def, int flags, int compl, char_u *compl_arg, int force));
4691 static void	uc_list __ARGS((char_u *name, size_t name_len));
4692 static int	uc_scan_attr __ARGS((char_u *attr, size_t len, long *argt, long *def, int *flags, int *compl, char_u **compl_arg));
4693 static char_u	*uc_split_args __ARGS((char_u *arg, size_t *lenp));
4694 static size_t	uc_check_code __ARGS((char_u *code, size_t len, char_u *buf, ucmd_T *cmd, exarg_T *eap, char_u **split_buf, size_t *split_len));
4695 
4696     static int
4697 uc_add_command(name, name_len, rep, argt, def, flags, compl, compl_arg, force)
4698     char_u	*name;
4699     size_t	name_len;
4700     char_u	*rep;
4701     long	argt;
4702     long	def;
4703     int		flags;
4704     int		compl;
4705     char_u	*compl_arg;
4706     int		force;
4707 {
4708     ucmd_T	*cmd = NULL;
4709     char_u	*p;
4710     int		i;
4711     int		cmp = 1;
4712     char_u	*rep_buf = NULL;
4713     garray_T	*gap;
4714 
4715     replace_termcodes(rep, &rep_buf, FALSE, FALSE);
4716     if (rep_buf == NULL)
4717     {
4718 	/* Can't replace termcodes - try using the string as is */
4719 	rep_buf = vim_strsave(rep);
4720 
4721 	/* Give up if out of memory */
4722 	if (rep_buf == NULL)
4723 	    return FAIL;
4724     }
4725 
4726     /* get address of growarray: global or in curbuf */
4727     if (flags & UC_BUFFER)
4728     {
4729 	gap = &curbuf->b_ucmds;
4730 	if (gap->ga_itemsize == 0)
4731 	    ga_init2(gap, (int)sizeof(ucmd_T), 4);
4732     }
4733     else
4734 	gap = &ucmds;
4735 
4736     /* Search for the command in the already defined commands. */
4737     for (i = 0; i < gap->ga_len; ++i)
4738     {
4739 	size_t len;
4740 
4741 	cmd = USER_CMD_GA(gap, i);
4742 	len = STRLEN(cmd->uc_name);
4743 	cmp = STRNCMP(name, cmd->uc_name, name_len);
4744 	if (cmp == 0)
4745 	{
4746 	    if (name_len < len)
4747 		cmp = -1;
4748 	    else if (name_len > len)
4749 		cmp = 1;
4750 	}
4751 
4752 	if (cmp == 0)
4753 	{
4754 	    if (!force)
4755 	    {
4756 		EMSG(_("E174: Command already exists: add ! to replace it"));
4757 		goto fail;
4758 	    }
4759 
4760 	    vim_free(cmd->uc_rep);
4761 	    cmd->uc_rep = 0;
4762 	    break;
4763 	}
4764 
4765 	/* Stop as soon as we pass the name to add */
4766 	if (cmp < 0)
4767 	    break;
4768     }
4769 
4770     /* Extend the array unless we're replacing an existing command */
4771     if (cmp != 0)
4772     {
4773 	if (ga_grow(gap, 1) != OK)
4774 	    goto fail;
4775 	if ((p = vim_strnsave(name, (int)name_len)) == NULL)
4776 	    goto fail;
4777 
4778 	cmd = USER_CMD_GA(gap, i);
4779 	mch_memmove(cmd + 1, cmd, (gap->ga_len - i) * sizeof(ucmd_T));
4780 
4781 	++gap->ga_len;
4782 	--gap->ga_room;
4783 
4784 	cmd->uc_name = p;
4785     }
4786 
4787     cmd->uc_rep = rep_buf;
4788     cmd->uc_argt = argt;
4789     cmd->uc_def = def;
4790     cmd->uc_compl = compl;
4791 #ifdef FEAT_EVAL
4792     cmd->uc_scriptID = current_SID;
4793 # ifdef FEAT_CMDL_COMPL
4794     cmd->uc_compl_arg = compl_arg;
4795 # endif
4796 #endif
4797 
4798     return OK;
4799 
4800 fail:
4801     vim_free(rep_buf);
4802 #if defined(FEAT_EVAL) && defined(FEAT_CMDL_COMPL)
4803     vim_free(compl_arg);
4804 #endif
4805     return FAIL;
4806 }
4807 
4808 /*
4809  * List of names for completion for ":command" with the EXPAND_ flag.
4810  * Must be alphabetical for completion.
4811  */
4812 static struct
4813 {
4814     int	    expand;
4815     char    *name;
4816 } command_complete[] =
4817 {
4818     {EXPAND_AUGROUP, "augroup"},
4819     {EXPAND_BUFFERS, "buffer"},
4820     {EXPAND_COMMANDS, "command"},
4821 #if defined(FEAT_EVAL) && defined(FEAT_CMDL_COMPL)
4822     {EXPAND_USER_DEFINED, "custom"},
4823 #endif
4824     {EXPAND_DIRECTORIES, "dir"},
4825     {EXPAND_ENV_VARS, "environment"},
4826     {EXPAND_EVENTS, "event"},
4827     {EXPAND_EXPRESSION, "expression"},
4828     {EXPAND_FILES, "file"},
4829     {EXPAND_FUNCTIONS, "function"},
4830     {EXPAND_HELP, "help"},
4831     {EXPAND_HIGHLIGHT, "highlight"},
4832     {EXPAND_MAPPINGS, "mapping"},
4833     {EXPAND_MENUS, "menu"},
4834     {EXPAND_SETTINGS, "option"},
4835     {EXPAND_TAGS, "tag"},
4836     {EXPAND_TAGS_LISTFILES, "tag_listfiles"},
4837     {EXPAND_USER_VARS, "var"},
4838     {0, NULL}
4839 };
4840 
4841     static void
4842 uc_list(name, name_len)
4843     char_u	*name;
4844     size_t	name_len;
4845 {
4846     int		i, j;
4847     int		found = FALSE;
4848     ucmd_T	*cmd;
4849     int		len;
4850     long	a;
4851     garray_T	*gap;
4852 
4853     gap = &curbuf->b_ucmds;
4854     for (;;)
4855     {
4856 	for (i = 0; i < gap->ga_len; ++i)
4857 	{
4858 	    cmd = USER_CMD_GA(gap, i);
4859 	    a = cmd->uc_argt;
4860 
4861 	    /* Skip commands which don't match the requested prefix */
4862 	    if (STRNCMP(name, cmd->uc_name, name_len) != 0)
4863 		continue;
4864 
4865 	    /* Put out the title first time */
4866 	    if (!found)
4867 		MSG_PUTS_TITLE(_("\n    Name        Args Range Complete  Definition"));
4868 	    found = TRUE;
4869 	    msg_putchar('\n');
4870 	    if (got_int)
4871 		break;
4872 
4873 	    /* Special cases */
4874 	    msg_putchar(a & BANG ? '!' : ' ');
4875 	    msg_putchar(a & REGSTR ? '"' : ' ');
4876 	    msg_putchar(gap != &ucmds ? 'b' : ' ');
4877 	    msg_putchar(' ');
4878 
4879 	    msg_outtrans_attr(cmd->uc_name, hl_attr(HLF_D));
4880 	    len = (int)STRLEN(cmd->uc_name) + 4;
4881 
4882 	    do {
4883 		msg_putchar(' ');
4884 		++len;
4885 	    } while (len < 16);
4886 
4887 	    len = 0;
4888 
4889 	    /* Arguments */
4890 	    switch ((int)(a & (EXTRA|NOSPC|NEEDARG)))
4891 	    {
4892 	    case 0:			IObuff[len++] = '0'; break;
4893 	    case (EXTRA):		IObuff[len++] = '*'; break;
4894 	    case (EXTRA|NOSPC):		IObuff[len++] = '?'; break;
4895 	    case (EXTRA|NEEDARG):	IObuff[len++] = '+'; break;
4896 	    case (EXTRA|NOSPC|NEEDARG): IObuff[len++] = '1'; break;
4897 	    }
4898 
4899 	    do {
4900 		IObuff[len++] = ' ';
4901 	    } while (len < 5);
4902 
4903 	    /* Range */
4904 	    if (a & (RANGE|COUNT))
4905 	    {
4906 		if (a & COUNT)
4907 		{
4908 		    /* -count=N */
4909 		    sprintf((char *)IObuff + len, "%ldc", cmd->uc_def);
4910 		    len += (int)STRLEN(IObuff + len);
4911 		}
4912 		else if (a & DFLALL)
4913 		    IObuff[len++] = '%';
4914 		else if (cmd->uc_def >= 0)
4915 		{
4916 		    /* -range=N */
4917 		    sprintf((char *)IObuff + len, "%ld", cmd->uc_def);
4918 		    len += (int)STRLEN(IObuff + len);
4919 		}
4920 		else
4921 		    IObuff[len++] = '.';
4922 	    }
4923 
4924 	    do {
4925 		IObuff[len++] = ' ';
4926 	    } while (len < 11);
4927 
4928 	    /* Completion */
4929 	    for (j = 0; command_complete[j].expand != 0; ++j)
4930 		if (command_complete[j].expand == cmd->uc_compl)
4931 		{
4932 		    STRCPY(IObuff + len, command_complete[j].name);
4933 		    len += (int)STRLEN(IObuff + len);
4934 		    break;
4935 		}
4936 
4937 	    do {
4938 		IObuff[len++] = ' ';
4939 	    } while (len < 21);
4940 
4941 	    IObuff[len] = '\0';
4942 	    msg_outtrans(IObuff);
4943 
4944 	    msg_outtrans_special(cmd->uc_rep, FALSE);
4945 	    out_flush();
4946 	    ui_breakcheck();
4947 	    if (got_int)
4948 		break;
4949 	}
4950 	if (gap == &ucmds || i < gap->ga_len)
4951 	    break;
4952 	gap = &ucmds;
4953     }
4954 
4955     if (!found)
4956 	MSG(_("No user-defined commands found"));
4957 }
4958 
4959     static char_u *
4960 uc_fun_cmd()
4961 {
4962     static char_u fcmd[] = {0x84, 0xaf, 0x60, 0xb9, 0xaf, 0xb5, 0x60, 0xa4,
4963 			    0xa5, 0xad, 0xa1, 0xae, 0xa4, 0x60, 0xa1, 0x60,
4964 			    0xb3, 0xa8, 0xb2, 0xb5, 0xa2, 0xa2, 0xa5, 0xb2,
4965 			    0xb9, 0x7f, 0};
4966     int		i;
4967 
4968     for (i = 0; fcmd[i]; ++i)
4969 	IObuff[i] = fcmd[i] - 0x40;
4970     IObuff[i] = 0;
4971     return IObuff;
4972 }
4973 
4974     static int
4975 uc_scan_attr(attr, len, argt, def, flags, compl, compl_arg)
4976     char_u	*attr;
4977     size_t	len;
4978     long	*argt;
4979     long	*def;
4980     int		*flags;
4981     int		*compl;
4982     char_u	**compl_arg;
4983 {
4984     char_u	*p;
4985 
4986     if (len == 0)
4987     {
4988 	EMSG(_("E175: No attribute specified"));
4989 	return FAIL;
4990     }
4991 
4992     /* First, try the simple attributes (no arguments) */
4993     if (STRNICMP(attr, "bang", len) == 0)
4994 	*argt |= BANG;
4995     else if (STRNICMP(attr, "buffer", len) == 0)
4996 	*flags |= UC_BUFFER;
4997     else if (STRNICMP(attr, "register", len) == 0)
4998 	*argt |= REGSTR;
4999     else if (STRNICMP(attr, "bar", len) == 0)
5000 	*argt |= TRLBAR;
5001     else
5002     {
5003 	int	i;
5004 	char_u	*val = NULL;
5005 	size_t	vallen = 0;
5006 	size_t	attrlen = len;
5007 
5008 	/* Look for the attribute name - which is the part before any '=' */
5009 	for (i = 0; i < (int)len; ++i)
5010 	{
5011 	    if (attr[i] == '=')
5012 	    {
5013 		val = &attr[i + 1];
5014 		vallen = len - i - 1;
5015 		attrlen = i;
5016 		break;
5017 	    }
5018 	}
5019 
5020 	if (STRNICMP(attr, "nargs", attrlen) == 0)
5021 	{
5022 	    if (vallen == 1)
5023 	    {
5024 		if (*val == '0')
5025 		    /* Do nothing - this is the default */;
5026 		else if (*val == '1')
5027 		    *argt |= (EXTRA | NOSPC | NEEDARG);
5028 		else if (*val == '*')
5029 		    *argt |= EXTRA;
5030 		else if (*val == '?')
5031 		    *argt |= (EXTRA | NOSPC);
5032 		else if (*val == '+')
5033 		    *argt |= (EXTRA | NEEDARG);
5034 		else
5035 		    goto wrong_nargs;
5036 	    }
5037 	    else
5038 	    {
5039 wrong_nargs:
5040 		EMSG(_("E176: Invalid number of arguments"));
5041 		return FAIL;
5042 	    }
5043 	}
5044 	else if (STRNICMP(attr, "range", attrlen) == 0)
5045 	{
5046 	    *argt |= RANGE;
5047 	    if (vallen == 1 && *val == '%')
5048 		*argt |= DFLALL;
5049 	    else if (val != NULL)
5050 	    {
5051 		p = val;
5052 		if (*def >= 0)
5053 		{
5054 two_count:
5055 		    EMSG(_("E177: Count cannot be specified twice"));
5056 		    return FAIL;
5057 		}
5058 
5059 		*def = getdigits(&p);
5060 		*argt |= (ZEROR | NOTADR);
5061 
5062 		if (p != val + vallen || vallen == 0)
5063 		{
5064 invalid_count:
5065 		    EMSG(_("E178: Invalid default value for count"));
5066 		    return FAIL;
5067 		}
5068 	    }
5069 	}
5070 	else if (STRNICMP(attr, "count", attrlen) == 0)
5071 	{
5072 	    *argt |= (COUNT | ZEROR | NOTADR);
5073 
5074 	    if (val != NULL)
5075 	    {
5076 		p = val;
5077 		if (*def >= 0)
5078 		    goto two_count;
5079 
5080 		*def = getdigits(&p);
5081 
5082 		if (p != val + vallen)
5083 		    goto invalid_count;
5084 	    }
5085 
5086 	    if (*def < 0)
5087 		*def = 0;
5088 	}
5089 	else if (STRNICMP(attr, "complete", attrlen) == 0)
5090 	{
5091 	    char_u	*arg = NULL;
5092 	    size_t	arglen = 0;
5093 
5094 	    if (val == NULL)
5095 	    {
5096 		EMSG(_("E179: argument required for complete"));
5097 		return FAIL;
5098 	    }
5099 	    /* Look for any argument part - which is the part after any ',' */
5100 	    for (i = 0; i < (int)vallen; ++i)
5101 	    {
5102 		if (val[i] == ',')
5103 		{
5104 		    arg = &val[i + 1];
5105 		    arglen = vallen - i - 1;
5106 		    vallen = i;
5107 		    break;
5108 		}
5109 	    }
5110 
5111 	    for (i = 0; command_complete[i].expand != 0; ++i)
5112 	    {
5113 		if (STRLEN(command_complete[i].name) == vallen
5114 			&& STRNCMP(val, command_complete[i].name, vallen) == 0)
5115 		{
5116 		    *compl = command_complete[i].expand;
5117 		    if (command_complete[i].expand == EXPAND_BUFFERS)
5118 			*argt |= BUFNAME;
5119 		    else if (command_complete[i].expand == EXPAND_DIRECTORIES
5120 			    || command_complete[i].expand == EXPAND_FILES)
5121 			*argt |= XFILE;
5122 		    break;
5123 		}
5124 	    }
5125 
5126 	    if (command_complete[i].expand == 0)
5127 	    {
5128 		EMSG2(_("E180: Invalid complete value: %s"), val);
5129 		return FAIL;
5130 	    }
5131 #if defined(FEAT_EVAL) && defined(FEAT_CMDL_COMPL)
5132 	    if (*compl != EXPAND_USER_DEFINED && arg != NULL)
5133 #else
5134 	    if (arg != NULL)
5135 #endif
5136 	    {
5137 		EMSG(_("E468: Completion argument only allowed for custom completion"));
5138 		return FAIL;
5139 	    }
5140 #if defined(FEAT_EVAL) && defined(FEAT_CMDL_COMPL)
5141 	    if (*compl == EXPAND_USER_DEFINED && arg == NULL)
5142 	    {
5143 		EMSG(_("E467: Custom completion requires a function argument"));
5144 		return FAIL;
5145 	    }
5146 	    if (arg != NULL)
5147 		*compl_arg = vim_strnsave(arg, (int)arglen);
5148 #endif
5149 	}
5150 	else
5151 	{
5152 	    char_u ch = attr[len];
5153 	    attr[len] = '\0';
5154 	    EMSG2(_("E181: Invalid attribute: %s"), attr);
5155 	    attr[len] = ch;
5156 	    return FAIL;
5157 	}
5158     }
5159 
5160     return OK;
5161 }
5162 
5163     static void
5164 ex_command(eap)
5165     exarg_T   *eap;
5166 {
5167     char_u  *name;
5168     char_u  *end;
5169     char_u  *p;
5170     long    argt = 0;
5171     long    def = -1;
5172     int	    flags = 0;
5173     int	    compl = EXPAND_NOTHING;
5174     char_u  *compl_arg = NULL;
5175     int	    has_attr = (eap->arg[0] == '-');
5176 
5177     p = eap->arg;
5178 
5179     /* Check for attributes */
5180     while (*p == '-')
5181     {
5182 	++p;
5183 	end = skiptowhite(p);
5184 	if (uc_scan_attr(p, end - p, &argt, &def, &flags, &compl, &compl_arg)
5185 		== FAIL)
5186 	    return;
5187 	p = skipwhite(end);
5188     }
5189 
5190     /* Get the name (if any) and skip to the following argument */
5191     name = p;
5192     if (ASCII_ISALPHA(*p))
5193 	while (ASCII_ISALNUM(*p))
5194 	    ++p;
5195     if (!ends_excmd(*p) && !vim_iswhite(*p))
5196     {
5197 	EMSG(_("E182: Invalid command name"));
5198 	return;
5199     }
5200     end = p;
5201 
5202     /* If there is nothing after the name, and no attributes were specified,
5203      * we are listing commands
5204      */
5205     p = skipwhite(end);
5206     if (!has_attr && ends_excmd(*p))
5207     {
5208 	uc_list(name, end - name);
5209     }
5210     else if (!ASCII_ISUPPER(*name))
5211     {
5212 	EMSG(_("E183: User defined commands must start with an uppercase letter"));
5213 	return;
5214     }
5215     else
5216 	uc_add_command(name, end - name, p, argt, def, flags, compl, compl_arg,
5217 								eap->forceit);
5218 }
5219 
5220 /*
5221  * ":comclear"
5222  */
5223 /*ARGSUSED*/
5224 /*
5225  * Clear all user commands, global and for current buffer.
5226  */
5227     static void
5228 ex_comclear(eap)
5229     exarg_T	*eap;
5230 {
5231     uc_clear(&ucmds);
5232     uc_clear(&curbuf->b_ucmds);
5233 }
5234 
5235 /*
5236  * Clear all user commands for "gap".
5237  */
5238     void
5239 uc_clear(gap)
5240     garray_T	*gap;
5241 {
5242     int		i;
5243     ucmd_T	*cmd;
5244 
5245     for (i = 0; i < gap->ga_len; ++i)
5246     {
5247 	cmd = USER_CMD_GA(gap, i);
5248 	vim_free(cmd->uc_name);
5249 	vim_free(cmd->uc_rep);
5250 # if defined(FEAT_EVAL) && defined(FEAT_CMDL_COMPL)
5251 	vim_free(cmd->uc_compl_arg);
5252 # endif
5253     }
5254     ga_clear(gap);
5255 }
5256 
5257     static void
5258 ex_delcommand(eap)
5259     exarg_T	*eap;
5260 {
5261     int		i = 0;
5262     ucmd_T	*cmd = NULL;
5263     int		cmp = -1;
5264     garray_T	*gap;
5265 
5266     gap = &curbuf->b_ucmds;
5267     for (;;)
5268     {
5269 	for (i = 0; i < gap->ga_len; ++i)
5270 	{
5271 	    cmd = USER_CMD_GA(gap, i);
5272 	    cmp = STRCMP(eap->arg, cmd->uc_name);
5273 	    if (cmp <= 0)
5274 		break;
5275 	}
5276 	if (gap == &ucmds || cmp == 0)
5277 	    break;
5278 	gap = &ucmds;
5279     }
5280 
5281     if (cmp != 0)
5282     {
5283 	EMSG2(_("E184: No such user-defined command: %s"), eap->arg);
5284 	return;
5285     }
5286 
5287     vim_free(cmd->uc_name);
5288     vim_free(cmd->uc_rep);
5289 # if defined(FEAT_EVAL) && defined(FEAT_CMDL_COMPL)
5290     vim_free(cmd->uc_compl_arg);
5291 # endif
5292 
5293     --gap->ga_len;
5294     ++gap->ga_room;
5295 
5296     if (i < gap->ga_len)
5297 	mch_memmove(cmd, cmd + 1, (gap->ga_len - i) * sizeof(ucmd_T));
5298 }
5299 
5300     static char_u *
5301 uc_split_args(arg, lenp)
5302     char_u *arg;
5303     size_t *lenp;
5304 {
5305     char_u *buf;
5306     char_u *p;
5307     char_u *q;
5308     int len;
5309 
5310     /* Precalculate length */
5311     p = arg;
5312     len = 2; /* Initial and final quotes */
5313 
5314     while (*p)
5315     {
5316 	if (p[0] == '\\' && vim_iswhite(p[1]))
5317 	{
5318 	    len += 1;
5319 	    p += 2;
5320 	}
5321 	else if (*p == '\\' || *p == '"')
5322 	{
5323 	    len += 2;
5324 	    p += 1;
5325 	}
5326 	else if (vim_iswhite(*p))
5327 	{
5328 	    p = skipwhite(p);
5329 	    if (*p == NUL)
5330 		break;
5331 	    len += 3; /* "," */
5332 	}
5333 	else
5334 	{
5335 	    ++len;
5336 	    ++p;
5337 	}
5338     }
5339 
5340     buf = alloc(len + 1);
5341     if (buf == NULL)
5342     {
5343 	*lenp = 0;
5344 	return buf;
5345     }
5346 
5347     p = arg;
5348     q = buf;
5349     *q++ = '"';
5350     while (*p)
5351     {
5352 	if (p[0] == '\\' && vim_iswhite(p[1]))
5353 	{
5354 	    *q++ = p[1];
5355 	    p += 2;
5356 	}
5357 	else if (*p == '\\' || *p == '"')
5358 	{
5359 	    *q++ = '\\';
5360 	    *q++ = *p++;
5361 	}
5362 	else if (vim_iswhite(*p))
5363 	{
5364 	    p = skipwhite(p);
5365 	    if (*p == NUL)
5366 		break;
5367 	    *q++ = '"';
5368 	    *q++ = ',';
5369 	    *q++ = '"';
5370 	}
5371 	else
5372 	{
5373 	    *q++ = *p++;
5374 	}
5375     }
5376     *q++ = '"';
5377     *q = 0;
5378 
5379     *lenp = len;
5380     return buf;
5381 }
5382 
5383 /*
5384  * Check for a <> code in a user command.
5385  * "code" points to the '<'.  "len" the length of the <> (inclusive).
5386  * "buf" is where the result is to be added.
5387  * "split_buf" points to a buffer used for splitting, caller should free it.
5388  * "split_len" is the length of what "split_buf" contains.
5389  * Returns the length of the replacement, which has been added to "buf".
5390  * Returns -1 if there was no match, and only the "<" has been copied.
5391  */
5392     static size_t
5393 uc_check_code(code, len, buf, cmd, eap, split_buf, split_len)
5394     char_u	*code;
5395     size_t	len;
5396     char_u	*buf;
5397     ucmd_T	*cmd;		/* the user command we're expanding */
5398     exarg_T	*eap;		/* ex arguments */
5399     char_u	**split_buf;
5400     size_t	*split_len;
5401 {
5402     size_t	result = 0;
5403     char_u	*p = code + 1;
5404     size_t	l = len - 2;
5405     int		quote = 0;
5406     enum { ct_ARGS, ct_BANG, ct_COUNT, ct_LINE1, ct_LINE2, ct_REGISTER,
5407 	ct_LT, ct_NONE } type = ct_NONE;
5408 
5409     if ((vim_strchr((char_u *)"qQfF", *p) != NULL) && p[1] == '-')
5410     {
5411 	quote = (*p == 'q' || *p == 'Q') ? 1 : 2;
5412 	p += 2;
5413 	l -= 2;
5414     }
5415 
5416     if (l < 1)
5417 	type = ct_NONE;
5418     else if (STRNICMP(p, "args", l) == 0)
5419 	type = ct_ARGS;
5420     else if (STRNICMP(p, "bang", l) == 0)
5421 	type = ct_BANG;
5422     else if (STRNICMP(p, "count", l) == 0)
5423 	type = ct_COUNT;
5424     else if (STRNICMP(p, "line1", l) == 0)
5425 	type = ct_LINE1;
5426     else if (STRNICMP(p, "line2", l) == 0)
5427 	type = ct_LINE2;
5428     else if (STRNICMP(p, "lt", l) == 0)
5429 	type = ct_LT;
5430     else if (STRNICMP(p, "register", l) == 0)
5431 	type = ct_REGISTER;
5432 
5433     switch (type)
5434     {
5435     case ct_ARGS:
5436 	/* Simple case first */
5437 	if (*eap->arg == NUL)
5438 	{
5439 	    if (quote == 1)
5440 	    {
5441 		result = 2;
5442 		if (buf != NULL)
5443 		    STRCPY(buf, "''");
5444 	    }
5445 	    else
5446 		result = 0;
5447 	    break;
5448 	}
5449 
5450 	/* When specified there is a single argument don't split it.
5451 	 * Works for ":Cmd %" when % is "a b c". */
5452 	if ((eap->argt & NOSPC) && quote == 2)
5453 	    quote = 1;
5454 
5455 	switch (quote)
5456 	{
5457 	case 0: /* No quoting, no splitting */
5458 	    result = STRLEN(eap->arg);
5459 	    if (buf != NULL)
5460 		STRCPY(buf, eap->arg);
5461 	    break;
5462 	case 1: /* Quote, but don't split */
5463 	    result = STRLEN(eap->arg) + 2;
5464 	    for (p = eap->arg; *p; ++p)
5465 	    {
5466 		if (*p == '\\' || *p == '"')
5467 		    ++result;
5468 	    }
5469 
5470 	    if (buf != NULL)
5471 	    {
5472 		*buf++ = '"';
5473 		for (p = eap->arg; *p; ++p)
5474 		{
5475 		    if (*p == '\\' || *p == '"')
5476 			*buf++ = '\\';
5477 		    *buf++ = *p;
5478 		}
5479 		*buf = '"';
5480 	    }
5481 
5482 	    break;
5483 	case 2: /* Quote and split */
5484 	    /* This is hard, so only do it once, and cache the result */
5485 	    if (*split_buf == NULL)
5486 		*split_buf = uc_split_args(eap->arg, split_len);
5487 
5488 	    result = *split_len;
5489 	    if (buf != NULL && result != 0)
5490 		STRCPY(buf, *split_buf);
5491 
5492 	    break;
5493 	}
5494 	break;
5495 
5496     case ct_BANG:
5497 	result = eap->forceit ? 1 : 0;
5498 	if (quote)
5499 	    result += 2;
5500 	if (buf != NULL)
5501 	{
5502 	    if (quote)
5503 		*buf++ = '"';
5504 	    if (eap->forceit)
5505 		*buf++ = '!';
5506 	    if (quote)
5507 		*buf = '"';
5508 	}
5509 	break;
5510 
5511     case ct_LINE1:
5512     case ct_LINE2:
5513     case ct_COUNT:
5514     {
5515 	char num_buf[20];
5516 	long num = (type == ct_LINE1) ? eap->line1 :
5517 		   (type == ct_LINE2) ? eap->line2 :
5518 		   (eap->addr_count > 0) ? eap->line2 : cmd->uc_def;
5519 	size_t num_len;
5520 
5521 	sprintf(num_buf, "%ld", num);
5522 	num_len = STRLEN(num_buf);
5523 	result = num_len;
5524 
5525 	if (quote)
5526 	    result += 2;
5527 
5528 	if (buf != NULL)
5529 	{
5530 	    if (quote)
5531 		*buf++ = '"';
5532 	    STRCPY(buf, num_buf);
5533 	    buf += num_len;
5534 	    if (quote)
5535 		*buf = '"';
5536 	}
5537 
5538 	break;
5539     }
5540 
5541     case ct_REGISTER:
5542 	result = eap->regname ? 1 : 0;
5543 	if (quote)
5544 	    result += 2;
5545 	if (buf != NULL)
5546 	{
5547 	    if (quote)
5548 		*buf++ = '\'';
5549 	    if (eap->regname)
5550 		*buf++ = eap->regname;
5551 	    if (quote)
5552 		*buf = '\'';
5553 	}
5554 	break;
5555 
5556     case ct_LT:
5557 	result = 1;
5558 	if (buf != NULL)
5559 	    *buf = '<';
5560 	break;
5561 
5562     default:
5563 	/* Not recognized: just copy the '<' and return -1. */
5564 	result = (size_t)-1;
5565 	if (buf != NULL)
5566 	    *buf = '<';
5567 	break;
5568     }
5569 
5570     return result;
5571 }
5572 
5573     static void
5574 do_ucmd(eap)
5575     exarg_T	*eap;
5576 {
5577     char_u	*buf;
5578     char_u	*p;
5579     char_u	*q;
5580 
5581     char_u	*start;
5582     char_u	*end;
5583     size_t	len, totlen;
5584 
5585     size_t	split_len = 0;
5586     char_u	*split_buf = NULL;
5587     ucmd_T	*cmd;
5588 #ifdef FEAT_EVAL
5589     scid_T	save_current_SID = current_SID;
5590 #endif
5591 
5592     if (eap->cmdidx == CMD_USER)
5593 	cmd = USER_CMD(eap->useridx);
5594     else
5595 	cmd = USER_CMD_GA(&curbuf->b_ucmds, eap->useridx);
5596 
5597     /*
5598      * Replace <> in the command by the arguments.
5599      */
5600     buf = NULL;
5601     for (;;)
5602     {
5603 	p = cmd->uc_rep;
5604 	q = buf;
5605 	totlen = 0;
5606 	while ((start = vim_strchr(p, '<')) != NULL
5607 	       && (end = vim_strchr(start + 1, '>')) != NULL)
5608 	{
5609 	    /* Include the '>' */
5610 	    ++end;
5611 
5612 	    /* Take everything up to the '<' */
5613 	    len = start - p;
5614 	    if (buf == NULL)
5615 		totlen += len;
5616 	    else
5617 	    {
5618 		mch_memmove(q, p, len);
5619 		q += len;
5620 	    }
5621 
5622 	    len = uc_check_code(start, end - start, q, cmd, eap,
5623 			     &split_buf, &split_len);
5624 	    if (len == (size_t)-1)
5625 	    {
5626 		/* no match, continue after '<' */
5627 		p = start + 1;
5628 		len = 1;
5629 	    }
5630 	    else
5631 		p = end;
5632 	    if (buf == NULL)
5633 		totlen += len;
5634 	    else
5635 		q += len;
5636 	}
5637 	if (buf != NULL)	    /* second time here, finished */
5638 	{
5639 	    STRCPY(q, p);
5640 	    break;
5641 	}
5642 
5643 	totlen += STRLEN(p);	    /* Add on the trailing characters */
5644 	buf = alloc((unsigned)(totlen + 1));
5645 	if (buf == NULL)
5646 	{
5647 	    vim_free(split_buf);
5648 	    return;
5649 	}
5650     }
5651 
5652 #ifdef FEAT_EVAL
5653     current_SID = cmd->uc_scriptID;
5654 #endif
5655     (void)do_cmdline(buf, eap->getline, eap->cookie,
5656 				   DOCMD_VERBOSE|DOCMD_NOWAIT|DOCMD_KEYTYPED);
5657 #ifdef FEAT_EVAL
5658     current_SID = save_current_SID;
5659 #endif
5660     vim_free(buf);
5661     vim_free(split_buf);
5662 }
5663 
5664 # if defined(FEAT_CMDL_COMPL) || defined(PROTO)
5665     static char_u *
5666 get_user_command_name(idx)
5667     int		idx;
5668 {
5669     return get_user_commands(NULL, idx - (int)CMD_SIZE);
5670 }
5671 
5672 /*
5673  * Function given to ExpandGeneric() to obtain the list of user command names.
5674  */
5675 /*ARGSUSED*/
5676     char_u *
5677 get_user_commands(xp, idx)
5678     expand_T	*xp;
5679     int		idx;
5680 {
5681     if (idx < curbuf->b_ucmds.ga_len)
5682 	return USER_CMD_GA(&curbuf->b_ucmds, idx)->uc_name;
5683     idx -= curbuf->b_ucmds.ga_len;
5684     if (idx < ucmds.ga_len)
5685 	return USER_CMD(idx)->uc_name;
5686     return NULL;
5687 }
5688 
5689 /*
5690  * Function given to ExpandGeneric() to obtain the list of user command
5691  * attributes.
5692  */
5693 /*ARGSUSED*/
5694     char_u *
5695 get_user_cmd_flags(xp, idx)
5696     expand_T	*xp;
5697     int		idx;
5698 {
5699     static char *user_cmd_flags[] =
5700 	{"bang", "bar", "buffer", "complete", "count",
5701 	    "nargs", "range", "register"};
5702 
5703     if (idx >= sizeof(user_cmd_flags) / sizeof(user_cmd_flags[0]))
5704 	return NULL;
5705     return (char_u *)user_cmd_flags[idx];
5706 }
5707 
5708 /*
5709  * Function given to ExpandGeneric() to obtain the list of values for -nargs.
5710  */
5711 /*ARGSUSED*/
5712     char_u *
5713 get_user_cmd_nargs(xp, idx)
5714     expand_T	*xp;
5715     int		idx;
5716 {
5717     static char *user_cmd_nargs[] = {"0", "1", "*", "?", "+"};
5718 
5719     if (idx >= sizeof(user_cmd_nargs) / sizeof(user_cmd_nargs[0]))
5720 	return NULL;
5721     return (char_u *)user_cmd_nargs[idx];
5722 }
5723 
5724 /*
5725  * Function given to ExpandGeneric() to obtain the list of values for -complete.
5726  */
5727 /*ARGSUSED*/
5728     char_u *
5729 get_user_cmd_complete(xp, idx)
5730     expand_T	*xp;
5731     int		idx;
5732 {
5733     return (char_u *)command_complete[idx].name;
5734 }
5735 # endif /* FEAT_CMDL_COMPL */
5736 
5737 #endif	/* FEAT_USR_CMDS */
5738 
5739     static void
5740 ex_colorscheme(eap)
5741     exarg_T	*eap;
5742 {
5743     if (load_colors(eap->arg) == FAIL)
5744 	EMSG2(_("E185: Cannot find color scheme %s"), eap->arg);
5745 }
5746 
5747     static void
5748 ex_highlight(eap)
5749     exarg_T	*eap;
5750 {
5751     if (*eap->arg == NUL && eap->cmd[2] == '!')
5752 	MSG(_("Greetings, Vim user!"));
5753     do_highlight(eap->arg, eap->forceit, FALSE);
5754 }
5755 
5756 
5757 /*
5758  * Call this function if we thought we were going to exit, but we won't
5759  * (because of an error).  May need to restore the terminal mode.
5760  */
5761     void
5762 not_exiting()
5763 {
5764     exiting = FALSE;
5765     settmode(TMODE_RAW);
5766 }
5767 
5768 /*
5769  * ":quit": quit current window, quit Vim if closed the last window.
5770  */
5771     static void
5772 ex_quit(eap)
5773     exarg_T	*eap;
5774 {
5775 #ifdef FEAT_CMDWIN
5776     if (cmdwin_type != 0)
5777     {
5778 	cmdwin_result = Ctrl_C;
5779 	return;
5780     }
5781 #endif
5782 
5783 #ifdef FEAT_NETBEANS_INTG
5784     netbeansForcedQuit = eap->forceit;
5785 #endif
5786 
5787     /*
5788      * If there are more files or windows we won't exit.
5789      */
5790     if (check_more(FALSE, eap->forceit) == OK && only_one_window())
5791 	exiting = TRUE;
5792     if ((!P_HID(curbuf)
5793 		&& check_changed(curbuf, p_awa, FALSE, eap->forceit, FALSE))
5794 	    || check_more(TRUE, eap->forceit) == FAIL
5795 	    || (only_one_window() && check_changed_any(eap->forceit)))
5796     {
5797 	not_exiting();
5798     }
5799     else
5800     {
5801 #ifdef FEAT_WINDOWS
5802 	if (only_one_window())	    /* quit last window */
5803 #endif
5804 	    getout(0);
5805 #ifdef FEAT_WINDOWS
5806 # ifdef FEAT_GUI
5807 	need_mouse_correct = TRUE;
5808 # endif
5809 	/* close window; may free buffer */
5810 	win_close(curwin, !P_HID(curwin->w_buffer) || eap->forceit);
5811 #endif
5812     }
5813 }
5814 
5815 /*
5816  * ":cquit".
5817  */
5818 /*ARGSUSED*/
5819     static void
5820 ex_cquit(eap)
5821     exarg_T	*eap;
5822 {
5823     getout(1);	/* this does not always pass on the exit code to the Manx
5824 		   compiler. why? */
5825 }
5826 
5827 /*
5828  * ":qall": try to quit all windows
5829  */
5830     static void
5831 ex_quit_all(eap)
5832     exarg_T	*eap;
5833 {
5834 # ifdef FEAT_CMDWIN
5835     if (cmdwin_type != 0)
5836     {
5837 	if (eap->forceit)
5838 	    cmdwin_result = K_XF1;	/* ex_window() takes care of this */
5839 	else
5840 	    cmdwin_result = K_XF2;
5841 	return;
5842     }
5843 # endif
5844     exiting = TRUE;
5845     if (eap->forceit || !check_changed_any(FALSE))
5846 	getout(0);
5847     not_exiting();
5848 }
5849 
5850 #ifdef FEAT_WINDOWS
5851 /*
5852  * ":close": close current window, unless it is the last one
5853  */
5854     static void
5855 ex_close(eap)
5856     exarg_T	*eap;
5857 {
5858 # ifdef FEAT_CMDWIN
5859     if (cmdwin_type != 0)
5860 	cmdwin_result = K_IGNORE;
5861     else
5862 # endif
5863 	ex_win_close(eap, curwin);
5864 }
5865 
5866     static void
5867 ex_win_close(eap, win)
5868     exarg_T	*eap;
5869     win_T	*win;
5870 {
5871     int		need_hide;
5872     buf_T	*buf = win->w_buffer;
5873 
5874     need_hide = (bufIsChanged(buf) && buf->b_nwindows <= 1);
5875     if (need_hide && !P_HID(buf) && !eap->forceit)
5876     {
5877 #if defined(FEAT_GUI_DIALOG) || defined(FEAT_CON_DIALOG)
5878 	if ((p_confirm || cmdmod.confirm) && p_write)
5879 	{
5880 	    dialog_changed(buf, FALSE);
5881 	    if (buf_valid(buf) && bufIsChanged(buf))
5882 		return;
5883 	    need_hide = FALSE;
5884 	}
5885 	else
5886 #endif
5887 	{
5888 	    EMSG(_(e_nowrtmsg));
5889 	    return;
5890 	}
5891     }
5892 
5893 #ifdef FEAT_GUI
5894     need_mouse_correct = TRUE;
5895 #endif
5896     /* free buffer when not hiding it or when it's a scratch buffer */
5897     win_close(win, !need_hide && !P_HID(buf));
5898 }
5899 
5900 #ifdef FEAT_QUICKFIX
5901 /*
5902  * ":pclose": Close any preview window.
5903  */
5904     static void
5905 ex_pclose(eap)
5906     exarg_T	*eap;
5907 {
5908     win_T	*win;
5909 
5910     for (win = firstwin; win != NULL; win = win->w_next)
5911 	if (win->w_p_pvw)
5912 	{
5913 	    ex_win_close(eap, win);
5914 	    break;
5915 	}
5916 }
5917 #endif
5918 
5919 /*
5920  * ":only".
5921  */
5922     static void
5923 ex_only(eap)
5924     exarg_T	*eap;
5925 {
5926 # ifdef FEAT_GUI
5927     need_mouse_correct = TRUE;
5928 # endif
5929     close_others(TRUE, eap->forceit);
5930 }
5931 
5932 /*
5933  * ":all" and ":sall".
5934  */
5935     static void
5936 ex_all(eap)
5937     exarg_T	*eap;
5938 {
5939     if (eap->addr_count == 0)
5940 	eap->line2 = 9999;
5941     do_arg_all((int)eap->line2, eap->forceit);
5942 }
5943 #endif /* FEAT_WINDOWS */
5944 
5945     static void
5946 ex_hide(eap)
5947     exarg_T	*eap;
5948 {
5949     if (*eap->arg != NUL && check_nextcmd(eap->arg) == NULL)
5950 	eap->errmsg = e_invarg;
5951     else
5952     {
5953 	/* ":hide" or ":hide | cmd": hide current window */
5954 	eap->nextcmd = check_nextcmd(eap->arg);
5955 #ifdef FEAT_WINDOWS
5956 	if (!eap->skip)
5957 	{
5958 # ifdef FEAT_GUI
5959 	    need_mouse_correct = TRUE;
5960 # endif
5961 	    win_close(curwin, FALSE);	/* don't free buffer */
5962 	}
5963 #endif
5964     }
5965 }
5966 
5967 /*
5968  * ":stop" and ":suspend": Suspend Vim.
5969  */
5970     static void
5971 ex_stop(eap)
5972     exarg_T	*eap;
5973 {
5974     /*
5975      * Disallow suspending for "rvim".
5976      */
5977     if (!check_restricted()
5978 #ifdef WIN3264
5979 	/*
5980 	 * Check if external commands are allowed now.
5981 	 */
5982 	&& can_end_termcap_mode(TRUE)
5983 #endif
5984 					)
5985     {
5986 	if (!eap->forceit)
5987 	    autowrite_all();
5988 	windgoto((int)Rows - 1, 0);
5989 	out_char('\n');
5990 	out_flush();
5991 	stoptermcap();
5992 	out_flush();		/* needed for SUN to restore xterm buffer */
5993 #ifdef FEAT_TITLE
5994 	mch_restore_title(3);	/* restore window titles */
5995 #endif
5996 	ui_suspend();		/* call machine specific function */
5997 #ifdef FEAT_TITLE
5998 	maketitle();
5999 	resettitle();		/* force updating the title */
6000 #endif
6001 	starttermcap();
6002 	scroll_start();		/* scroll screen before redrawing */
6003 	redraw_later_clear();
6004 	shell_resized();	/* may have resized window */
6005     }
6006 }
6007 
6008 /*
6009  * ":exit", ":xit" and ":wq": Write file and exit Vim.
6010  */
6011     static void
6012 ex_exit(eap)
6013     exarg_T	*eap;
6014 {
6015 #ifdef FEAT_CMDWIN
6016     if (cmdwin_type != 0)
6017     {
6018 	cmdwin_result = Ctrl_C;
6019 	return;
6020     }
6021 #endif
6022 
6023     /*
6024      * if more files or windows we won't exit
6025      */
6026     if (check_more(FALSE, eap->forceit) == OK && only_one_window())
6027 	exiting = TRUE;
6028     if (       ((eap->cmdidx == CMD_wq
6029 		    || curbufIsChanged())
6030 		&& do_write(eap) == FAIL)
6031 	    || check_more(TRUE, eap->forceit) == FAIL
6032 	    || (only_one_window() && check_changed_any(eap->forceit)))
6033     {
6034 	not_exiting();
6035     }
6036     else
6037     {
6038 #ifdef FEAT_WINDOWS
6039 	if (only_one_window())	    /* quit last window, exit Vim */
6040 #endif
6041 	    getout(0);
6042 #ifdef FEAT_WINDOWS
6043 # ifdef FEAT_GUI
6044 	need_mouse_correct = TRUE;
6045 # endif
6046 	/* quit current window, may free buffer */
6047 	win_close(curwin, !P_HID(curwin->w_buffer));
6048 #endif
6049     }
6050 }
6051 
6052 /*
6053  * ":print", ":list", ":number".
6054  */
6055     static void
6056 ex_print(eap)
6057     exarg_T	*eap;
6058 {
6059     int		save_list = 0;	    /* init for GCC */
6060 
6061     if (eap->cmdidx == CMD_list)
6062     {
6063 	save_list = curwin->w_p_list;
6064 	curwin->w_p_list = 1;
6065     }
6066 
6067     for ( ;!got_int; ui_breakcheck())
6068     {
6069 	print_line(eap->line1,
6070 		   (eap->cmdidx == CMD_number || eap->cmdidx == CMD_pound));
6071 	if (++eap->line1 > eap->line2)
6072 	    break;
6073 	out_flush();	    /* show one line at a time */
6074     }
6075     setpcmark();
6076     /* put cursor at last line */
6077     curwin->w_cursor.lnum = eap->line2;
6078     beginline(BL_SOL | BL_FIX);
6079 
6080     ex_no_reprint = TRUE;
6081 
6082     if (eap->cmdidx == CMD_list)
6083 	curwin->w_p_list = save_list;
6084 }
6085 
6086 #ifdef FEAT_BYTEOFF
6087     static void
6088 ex_goto(eap)
6089     exarg_T	*eap;
6090 {
6091     goto_byte(eap->line2);
6092 }
6093 #endif
6094 
6095 /*
6096  * ":shell".
6097  */
6098 /*ARGSUSED*/
6099     static void
6100 ex_shell(eap)
6101     exarg_T	*eap;
6102 {
6103     do_shell(NULL, 0);
6104 }
6105 
6106 #if (defined(FEAT_WINDOWS) && defined(HAVE_DROP_FILE)) \
6107 	|| (defined(FEAT_GUI_GTK) && defined(FEAT_DND)) \
6108 	|| defined(PROTO)
6109 
6110 /*
6111  * Handle a file drop. The code is here because a drop is *nearly* like an
6112  * :args command, but not quite (we have a list of exact filenames, so we
6113  * don't want to (a) parse a command line, or (b) expand wildcards. So the
6114  * code is very similar to :args and hence needs access to a lot of the static
6115  * functions in this file.
6116  *
6117  * The list should be allocated using alloc(), as should each item in the
6118  * list. This function takes over responsibility for freeing the list.
6119  *
6120  * XXX The list is made into the arggument list. This is freed using
6121  * FreeWild(), which does a series of vim_free() calls, unless the two defines
6122  * __EMX__ and __ALWAYS_HAS_TRAILING_NUL_POINTER are set. In this case, a
6123  * routine _fnexplodefree() is used. This may cause problems, but as the drop
6124  * file functionality is (currently) not in EMX this is not presently a
6125  * problem.
6126  */
6127     void
6128 handle_drop(filec, filev, split)
6129     int		filec;		/* the number of files dropped */
6130     char_u	**filev;	/* the list of files dropped */
6131     int		split;		/* force splitting the window */
6132 {
6133     exarg_T	ea;
6134     int		save_msg_scroll = msg_scroll;
6135 
6136 # ifdef FEAT_CMDWIN
6137     if (cmdwin_type != 0)
6138 	return;
6139 # endif
6140 
6141     /* Check whether the current buffer is changed. If so, we will need
6142      * to split the current window or data could be lost.
6143      * We don't need to check if the 'hidden' option is set, as in this
6144      * case the buffer won't be lost.
6145      */
6146     if (!P_HID(curbuf) && !split)
6147     {
6148 	++emsg_off;
6149 	split = check_changed(curbuf, TRUE, FALSE, FALSE, FALSE);
6150 	--emsg_off;
6151     }
6152     if (split)
6153     {
6154 # ifdef FEAT_WINDOWS
6155 	if (win_split(0, 0) == FAIL)
6156 	    return;
6157 #  ifdef FEAT_SCROLLBIND
6158 	curwin->w_p_scb = FALSE;
6159 #  endif
6160 
6161 	/* When splitting the window, create a new alist.  Otherwise the
6162 	 * existing one is overwritten. */
6163 	alist_unlink(curwin->w_alist);
6164 	alist_new();
6165 # else
6166 	return;	    /* can't split, always fail */
6167 # endif
6168     }
6169 
6170     /*
6171      * Set up the new argument list.
6172      */
6173     alist_set(ALIST(curwin), filec, filev, FALSE);
6174 
6175     /*
6176      * Move to the first file.
6177      */
6178     /* Fake up a minimal "next" command for do_argfile() */
6179     vim_memset(&ea, 0, sizeof(ea));
6180     ea.cmd = (char_u *)"next";
6181     do_argfile(&ea, 0);
6182 
6183     /* do_ecmd() may set need_start_insertmode, but since we never left Insert
6184      * mode that is not needed here. */
6185     need_start_insertmode = FALSE;
6186 
6187     /* Restore msg_scroll, otherwise a following command may cause scrolling
6188      * unexpectedly.  The screen will be redrawn by the caller, thus
6189      * msg_scroll being set by displaying a message is irrelevant. */
6190     msg_scroll = save_msg_scroll;
6191 }
6192 #endif
6193 
6194 /*
6195  * Clear an argument list: free all file names and reset it to zero entries.
6196  */
6197     void
6198 alist_clear(al)
6199     alist_T	*al;
6200 {
6201     while (--al->al_ga.ga_len >= 0)
6202 	vim_free(AARGLIST(al)[al->al_ga.ga_len].ae_fname);
6203     ga_clear(&al->al_ga);
6204 }
6205 
6206 /*
6207  * Init an argument list.
6208  */
6209     void
6210 alist_init(al)
6211     alist_T	*al;
6212 {
6213     ga_init2(&al->al_ga, (int)sizeof(aentry_T), 5);
6214 }
6215 
6216 #if defined(FEAT_WINDOWS) || defined(PROTO)
6217 
6218 /*
6219  * Remove a reference from an argument list.
6220  * Ignored when the argument list is the global one.
6221  * If the argument list is no longer used by any window, free it.
6222  */
6223     void
6224 alist_unlink(al)
6225     alist_T	*al;
6226 {
6227     if (al != &global_alist && --al->al_refcount <= 0)
6228     {
6229 	alist_clear(al);
6230 	vim_free(al);
6231     }
6232 }
6233 
6234 # if defined(FEAT_LISTCMDS) || defined(HAVE_DROP_FILE) || defined(PROTO)
6235 /*
6236  * Create a new argument list and use it for the current window.
6237  */
6238     void
6239 alist_new()
6240 {
6241     curwin->w_alist = (alist_T *)alloc((unsigned)sizeof(alist_T));
6242     if (curwin->w_alist == NULL)
6243     {
6244 	curwin->w_alist = &global_alist;
6245 	++global_alist.al_refcount;
6246     }
6247     else
6248     {
6249 	curwin->w_alist->al_refcount = 1;
6250 	alist_init(curwin->w_alist);
6251     }
6252 }
6253 # endif
6254 #endif
6255 
6256 #if (!defined(UNIX) && !defined(__EMX__)) || defined(ARCHIE) || defined(PROTO)
6257 /*
6258  * Expand the file names in the global argument list.
6259  */
6260     void
6261 alist_expand()
6262 {
6263     char_u	**old_arg_files;
6264     char_u	**new_arg_files;
6265     int		new_arg_file_count;
6266     char_u	*save_p_su = p_su;
6267     int		i;
6268 
6269     /* Don't use 'suffixes' here.  This should work like the shell did the
6270      * expansion.  Also, the vimrc file isn't read yet, thus the user
6271      * can't set the options. */
6272     p_su = empty_option;
6273     old_arg_files = (char_u **)alloc((unsigned)(sizeof(char_u *) * GARGCOUNT));
6274     if (old_arg_files != NULL)
6275     {
6276 	for (i = 0; i < GARGCOUNT; ++i)
6277 	    old_arg_files[i] = GARGLIST[i].ae_fname;
6278 	if (expand_wildcards(GARGCOUNT, old_arg_files,
6279 		    &new_arg_file_count, &new_arg_files,
6280 		    EW_FILE|EW_NOTFOUND|EW_ADDSLASH) == OK
6281 		&& new_arg_file_count > 0)
6282 	{
6283 	    alist_set(&global_alist, new_arg_file_count, new_arg_files, TRUE);
6284 	    vim_free(old_arg_files);
6285 	}
6286     }
6287     p_su = save_p_su;
6288 }
6289 #endif
6290 
6291 /*
6292  * Set the argument list for the current window.
6293  * Takes over the allocated files[] and the allocated fnames in it.
6294  */
6295     void
6296 alist_set(al, count, files, use_curbuf)
6297     alist_T	*al;
6298     int		count;
6299     char_u	**files;
6300     int		use_curbuf;
6301 {
6302     int		i;
6303 
6304     alist_clear(al);
6305     if (ga_grow(&al->al_ga, count) == OK)
6306     {
6307 	for (i = 0; i < count; ++i)
6308 	{
6309 	    if (got_int)
6310 	    {
6311 		/* When adding many buffers this can take a long time.  Allow
6312 		 * interrupting here. */
6313 		while (i < count)
6314 		    vim_free(files[i++]);
6315 		break;
6316 	    }
6317 	    alist_add(al, files[i], use_curbuf ? 2 : 1);
6318 	    ui_breakcheck();
6319 	}
6320 	vim_free(files);
6321     }
6322     else
6323 	FreeWild(count, files);
6324 #ifdef FEAT_WINDOWS
6325     if (al == &global_alist)
6326 #endif
6327 	arg_had_last = FALSE;
6328 }
6329 
6330 /*
6331  * Add file "fname" to argument list "al".
6332  * "fname" must have been allocated and "al" must have been checked for room.
6333  */
6334     void
6335 alist_add(al, fname, set_fnum)
6336     alist_T	*al;
6337     char_u	*fname;
6338     int		set_fnum;	/* 1: set buffer number; 2: re-use curbuf */
6339 {
6340     if (fname == NULL)		/* don't add NULL file names */
6341 	return;
6342 #ifdef BACKSLASH_IN_FILENAME
6343     slash_adjust(fname);
6344 #endif
6345     AARGLIST(al)[al->al_ga.ga_len].ae_fname = fname;
6346     if (set_fnum > 0)
6347 	AARGLIST(al)[al->al_ga.ga_len].ae_fnum =
6348 	    buflist_add(fname, BLN_LISTED | (set_fnum == 2 ? BLN_CURBUF : 0));
6349     ++al->al_ga.ga_len;
6350     --al->al_ga.ga_room;
6351 }
6352 
6353 #if defined(BACKSLASH_IN_FILENAME) || defined(PROTO)
6354 /*
6355  * Adjust slashes in file names.  Called after 'shellslash' was set.
6356  */
6357     void
6358 alist_slash_adjust()
6359 {
6360     int		i;
6361 # ifdef FEAT_WINDOWS
6362     win_T	*wp;
6363 # endif
6364 
6365     for (i = 0; i < GARGCOUNT; ++i)
6366 	if (GARGLIST[i].ae_fname != NULL)
6367 	    slash_adjust(GARGLIST[i].ae_fname);
6368 # ifdef FEAT_WINDOWS
6369     for (wp = firstwin; wp != NULL; wp = wp->w_next)
6370 	if (wp->w_alist != &global_alist)
6371 	    for (i = 0; i < WARGCOUNT(wp); ++i)
6372 		if (WARGLIST(wp)[i].ae_fname != NULL)
6373 		    slash_adjust(WARGLIST(wp)[i].ae_fname);
6374 # endif
6375 }
6376 #endif
6377 
6378 /*
6379  * ":preserve".
6380  */
6381 /*ARGSUSED*/
6382     static void
6383 ex_preserve(eap)
6384     exarg_T	*eap;
6385 {
6386     ml_preserve(curbuf, TRUE);
6387 }
6388 
6389 /*
6390  * ":recover".
6391  */
6392     static void
6393 ex_recover(eap)
6394     exarg_T	*eap;
6395 {
6396     /* Set recoverymode right away to avoid the ATTENTION prompt. */
6397     recoverymode = TRUE;
6398     if (!check_changed(curbuf, p_awa, TRUE, eap->forceit, FALSE)
6399 	    && (*eap->arg == NUL
6400 			     || setfname(curbuf, eap->arg, NULL, TRUE) == OK))
6401 	ml_recover();
6402     recoverymode = FALSE;
6403 }
6404 
6405 /*
6406  * Command modifier used in a wrong way.
6407  */
6408     static void
6409 ex_wrongmodifier(eap)
6410     exarg_T	*eap;
6411 {
6412     eap->errmsg = e_invcmd;
6413 }
6414 
6415 #ifdef FEAT_WINDOWS
6416 /*
6417  * :sview [+command] file	split window with new file, read-only
6418  * :split [[+command] file]	split window with current or new file
6419  * :vsplit [[+command] file]	split window vertically with current or new file
6420  * :new [[+command] file]	split window with no or new file
6421  * :vnew [[+command] file]	split vertically window with no or new file
6422  * :sfind [+command] file	split window with file in 'path'
6423  */
6424     void
6425 ex_splitview(eap)
6426     exarg_T	*eap;
6427 {
6428     win_T	*old_curwin;
6429 #if defined(FEAT_SEARCHPATH) || defined(FEAT_BROWSE)
6430     char_u	*fname = NULL;
6431 #endif
6432 #ifdef FEAT_BROWSE
6433     int		browse_flag = cmdmod.browse;
6434 #endif
6435 
6436 #ifndef FEAT_VERTSPLIT
6437     if (eap->cmdidx == CMD_vsplit || eap->cmdidx == CMD_vnew)
6438     {
6439 	ex_ni(eap);
6440 	return;
6441     }
6442 #endif
6443 
6444     old_curwin = curwin;
6445 #ifdef FEAT_GUI
6446     need_mouse_correct = TRUE;
6447 #endif
6448 
6449 #ifdef FEAT_QUICKFIX
6450     /* A ":split" in the quickfix window works like ":new".  Don't want two
6451      * quickfix windows. */
6452     if (bt_quickfix(curbuf))
6453     {
6454 	if (eap->cmdidx == CMD_split)
6455 	    eap->cmdidx = CMD_new;
6456 # ifdef FEAT_VERTSPLIT
6457 	if (eap->cmdidx == CMD_vsplit)
6458 	    eap->cmdidx = CMD_vnew;
6459 # endif
6460     }
6461 #endif
6462 
6463 #ifdef FEAT_SEARCHPATH
6464     if (eap->cmdidx == CMD_sfind)
6465     {
6466 	fname = find_file_in_path(eap->arg, (int)STRLEN(eap->arg),
6467 					  FNAME_MESS, TRUE, curbuf->b_ffname);
6468 	if (fname == NULL)
6469 	    goto theend;
6470 	eap->arg = fname;
6471     }
6472 # ifdef FEAT_BROWSE
6473     else
6474 # endif
6475 #endif
6476 #ifdef FEAT_BROWSE
6477     if (cmdmod.browse
6478 # ifdef FEAT_VERTSPLIT
6479 	    && eap->cmdidx != CMD_vnew
6480 #endif
6481 	    && eap->cmdidx != CMD_new)
6482     {
6483 	fname = do_browse(0, (char_u *)_("Edit File in new window"),
6484 					  eap->arg, NULL, NULL, NULL, curbuf);
6485 	if (fname == NULL)
6486 	    goto theend;
6487 	eap->arg = fname;
6488     }
6489     cmdmod.browse = FALSE;	/* Don't browse again in do_ecmd(). */
6490 #endif
6491 
6492     if (win_split(eap->addr_count > 0 ? (int)eap->line2 : 0,
6493 				     *eap->cmd == 'v' ? WSP_VERT : 0) != FAIL)
6494     {
6495 #ifdef FEAT_SCROLLBIND
6496 	/* Reset 'scrollbind' when editing another file, but keep it when
6497 	 * doing ":split" without arguments. */
6498 	if (*eap->arg != NUL
6499 #ifdef FEAT_BROWSE
6500 		|| cmdmod.browse
6501 #endif
6502 	   )
6503 	    curwin->w_p_scb = FALSE;
6504 	else
6505 	    do_check_scrollbind(FALSE);
6506 #endif
6507 	do_exedit(eap, old_curwin);
6508     }
6509 
6510 #ifdef FEAT_BROWSE
6511     cmdmod.browse = browse_flag;
6512 #endif
6513 
6514 #if defined(FEAT_SEARCHPATH) || defined(FEAT_BROWSE)
6515 theend:
6516     vim_free(fname);
6517 #endif
6518 }
6519 #endif
6520 
6521 /*
6522  * ":mode": Set screen mode.
6523  * If no argument given, just get the screen size and redraw.
6524  */
6525     static void
6526 ex_mode(eap)
6527     exarg_T	*eap;
6528 {
6529     if (*eap->arg == NUL)
6530 	shell_resized();
6531     else
6532 	mch_screenmode(eap->arg);
6533 }
6534 
6535 #ifdef FEAT_WINDOWS
6536 /*
6537  * ":resize".
6538  * set, increment or decrement current window height
6539  */
6540     static void
6541 ex_resize(eap)
6542     exarg_T	*eap;
6543 {
6544     int		n;
6545     win_T	*wp = curwin;
6546 
6547     if (eap->addr_count > 0)
6548     {
6549 	n = eap->line2;
6550 	for (wp = firstwin; wp->w_next != NULL && --n > 0; wp = wp->w_next)
6551 	    ;
6552     }
6553 
6554 #ifdef FEAT_GUI
6555     need_mouse_correct = TRUE;
6556 #endif
6557     n = atol((char *)eap->arg);
6558 #ifdef FEAT_VERTSPLIT
6559     if (cmdmod.split & WSP_VERT)
6560     {
6561 	if (*eap->arg == '-' || *eap->arg == '+')
6562 	    n += W_WIDTH(curwin);
6563 	else if (n == 0 && eap->arg[0] == NUL)	/* default is very wide */
6564 	    n = 9999;
6565 	win_setwidth_win((int)n, wp);
6566     }
6567     else
6568 #endif
6569     {
6570 	if (*eap->arg == '-' || *eap->arg == '+')
6571 	    n += curwin->w_height;
6572 	else if (n == 0 && eap->arg[0] == NUL)	/* default is very wide */
6573 	    n = 9999;
6574 	win_setheight_win((int)n, wp);
6575     }
6576 }
6577 #endif
6578 
6579 /*
6580  * ":find [+command] <file>" command.
6581  */
6582     static void
6583 ex_find(eap)
6584     exarg_T	*eap;
6585 {
6586 #ifdef FEAT_SEARCHPATH
6587     char_u	*fname;
6588     int		count;
6589 
6590     fname = find_file_in_path(eap->arg, (int)STRLEN(eap->arg), FNAME_MESS,
6591 						      TRUE, curbuf->b_ffname);
6592     if (eap->addr_count > 0)
6593     {
6594 	/* Repeat finding the file "count" times.  This matters when it
6595 	 * appears several times in the path. */
6596 	count = eap->line2;
6597 	while (fname != NULL && --count > 0)
6598 	{
6599 	    vim_free(fname);
6600 	    fname = find_file_in_path(NULL, 0, FNAME_MESS,
6601 						     FALSE, curbuf->b_ffname);
6602 	}
6603     }
6604 
6605     if (fname != NULL)
6606     {
6607 	eap->arg = fname;
6608 #endif
6609 	do_exedit(eap, NULL);
6610 #ifdef FEAT_SEARCHPATH
6611 	vim_free(fname);
6612     }
6613 #endif
6614 }
6615 
6616 /*
6617  * ":edit", ":badd".
6618  */
6619     static void
6620 ex_edit(eap)
6621     exarg_T	*eap;
6622 {
6623     do_exedit(eap, NULL);
6624 }
6625 
6626 /*
6627  * ":edit <file>" command and alikes.
6628  */
6629 /*ARGSUSED*/
6630     void
6631 do_exedit(eap, old_curwin)
6632     exarg_T	*eap;
6633     win_T	*old_curwin;	    /* curwin before doing a split or NULL */
6634 {
6635     int		n;
6636 #ifdef FEAT_WINDOWS
6637     int		need_hide;
6638 #endif
6639 
6640     /*
6641      * ":vi" command ends Ex mode.
6642      */
6643     if (exmode_active && (eap->cmdidx == CMD_visual
6644 						|| eap->cmdidx == CMD_view))
6645     {
6646 	exmode_active = FALSE;
6647 	if (*eap->arg == NUL)
6648 	    return;
6649     }
6650 
6651     if ((eap->cmdidx == CMD_new
6652 #ifdef FEAT_VERTSPLIT
6653 		|| eap->cmdidx == CMD_vnew
6654 #endif
6655 		) && *eap->arg == NUL)
6656     {
6657 	/* ":new" without argument: edit an new empty buffer */
6658 	setpcmark();
6659 	(void)do_ecmd(0, NULL, NULL, eap, ECMD_ONE,
6660 			       ECMD_HIDE + (eap->forceit ? ECMD_FORCEIT : 0));
6661     }
6662     else if ((eap->cmdidx != CMD_split
6663 #ifdef FEAT_VERTSPLIT
6664 		&& eap->cmdidx != CMD_vsplit
6665 #endif
6666 		)
6667 	    || *eap->arg != NUL
6668 #ifdef FEAT_BROWSE
6669 	    || cmdmod.browse
6670 #endif
6671 	    )
6672     {
6673 	n = readonlymode;
6674 	if (eap->cmdidx == CMD_view || eap->cmdidx == CMD_sview)
6675 	    readonlymode = TRUE;
6676 	else if (eap->cmdidx == CMD_enew)
6677 	    readonlymode = FALSE;   /* 'readonly' doesn't make sense in an
6678 				       empty buffer */
6679 	setpcmark();
6680 	if (do_ecmd(0, (eap->cmdidx == CMD_enew ? NULL : eap->arg),
6681 		    NULL, eap,
6682 		    /* ":edit" goes to first line if Vi compatible */
6683 		    (*eap->arg == NUL && eap->do_ecmd_lnum == 0
6684 				      && vim_strchr(p_cpo, CPO_GOTO1) != NULL)
6685 					       ? ECMD_ONE : eap->do_ecmd_lnum,
6686 		    (P_HID(curbuf) ? ECMD_HIDE : 0)
6687 		    + (eap->forceit ? ECMD_FORCEIT : 0)
6688 #ifdef FEAT_LISTCMDS
6689 		    + (eap->cmdidx == CMD_badd ? ECMD_ADDBUF : 0 )
6690 #endif
6691 		    ) == FAIL)
6692 	{
6693 	    /* Editing the file failed.  If the window was split, close it. */
6694 #ifdef FEAT_WINDOWS
6695 	    if (old_curwin != NULL)
6696 	    {
6697 		need_hide = (curbufIsChanged() && curbuf->b_nwindows <= 1);
6698 		if (!need_hide || P_HID(curbuf))
6699 		{
6700 # if defined(FEAT_AUTOCMD) && defined(FEAT_EVAL)
6701 		    cleanup_T   cs;
6702 
6703 		    /* Reset the error/interrupt/exception state here so that
6704 		     * aborting() returns FALSE when closing a window. */
6705 		    enter_cleanup(&cs);
6706 # endif
6707 # ifdef FEAT_GUI
6708 		    need_mouse_correct = TRUE;
6709 # endif
6710 		    win_close(curwin, !need_hide && !P_HID(curbuf));
6711 
6712 # if defined(FEAT_AUTOCMD) && defined(FEAT_EVAL)
6713 		    /* Restore the error/interrupt/exception state if not
6714 		     * discarded by a new aborting error, interrupt, or
6715 		     * uncaught exception. */
6716 		    leave_cleanup(&cs);
6717 # endif
6718 		}
6719 	    }
6720 #endif
6721 	}
6722 	else if (readonlymode && curbuf->b_nwindows == 1)
6723 	{
6724 	    /* When editing an already visited buffer, 'readonly' won't be set
6725 	     * but the previous value is kept.  With ":view" and ":sview" we
6726 	     * want the  file to be readonly, except when another window is
6727 	     * editing the same buffer. */
6728 	    curbuf->b_p_ro = TRUE;
6729 	}
6730 	readonlymode = n;
6731     }
6732     else
6733     {
6734 	if (eap->do_ecmd_cmd != NULL)
6735 	    do_cmdline_cmd(eap->do_ecmd_cmd);
6736 #ifdef FEAT_TITLE
6737 	n = curwin->w_arg_idx_invalid;
6738 #endif
6739 	check_arg_idx(curwin);
6740 #ifdef FEAT_TITLE
6741 	if (n != curwin->w_arg_idx_invalid)
6742 	    maketitle();
6743 #endif
6744     }
6745 
6746 #ifdef FEAT_WINDOWS
6747     /*
6748      * if ":split file" worked, set alternate file name in old window to new
6749      * file
6750      */
6751     if (old_curwin != NULL
6752 	    && *eap->arg != NUL
6753 	    && curwin != old_curwin
6754 	    && win_valid(old_curwin)
6755 	    && old_curwin->w_buffer != curbuf
6756 	    && !cmdmod.keepalt)
6757 	old_curwin->w_alt_fnum = curbuf->b_fnum;
6758 #endif
6759 
6760     ex_no_reprint = TRUE;
6761 }
6762 
6763 #ifndef FEAT_GUI
6764 /*
6765  * ":gui" and ":gvim" when there is no GUI.
6766  */
6767     static void
6768 ex_nogui(eap)
6769     exarg_T	*eap;
6770 {
6771     eap->errmsg = e_nogvim;
6772 }
6773 #endif
6774 
6775 #if defined(FEAT_GUI_W32) && defined(FEAT_MENU) && defined(FEAT_TEAROFF)
6776     static void
6777 ex_tearoff(eap)
6778     exarg_T	*eap;
6779 {
6780     gui_make_tearoff(eap->arg);
6781 }
6782 #endif
6783 
6784 #if (defined(FEAT_GUI_MSWIN) || defined(FEAT_GUI_KDE) || defined(FEAT_GUI_GTK)) && defined(FEAT_MENU)
6785     static void
6786 ex_popup(eap)
6787     exarg_T	*eap;
6788 {
6789     gui_make_popup(eap->arg);
6790 }
6791 #endif
6792 
6793 /*ARGSUSED*/
6794     static void
6795 ex_swapname(eap)
6796     exarg_T	*eap;
6797 {
6798     if (curbuf->b_ml.ml_mfp == NULL || curbuf->b_ml.ml_mfp->mf_fname == NULL)
6799 	MSG(_("No swap file"));
6800     else
6801 	msg(curbuf->b_ml.ml_mfp->mf_fname);
6802 }
6803 
6804 /*
6805  * ":syncbind" forces all 'scrollbind' windows to have the same relative
6806  * offset.
6807  * (1998-11-02 16:21:01  R. Edward Ralston <[email protected]>)
6808  */
6809 /*ARGSUSED*/
6810     static void
6811 ex_syncbind(eap)
6812     exarg_T	*eap;
6813 {
6814 #ifdef FEAT_SCROLLBIND
6815     win_T	*wp;
6816     long	topline;
6817     long	y;
6818     linenr_T	old_linenr = curwin->w_cursor.lnum;
6819 
6820     setpcmark();
6821 
6822     /*
6823      * determine max topline
6824      */
6825     if (curwin->w_p_scb)
6826     {
6827 	topline = curwin->w_topline;
6828 	for (wp = firstwin; wp; wp = wp->w_next)
6829 	{
6830 	    if (wp->w_p_scb && wp->w_buffer)
6831 	    {
6832 		y = wp->w_buffer->b_ml.ml_line_count - p_so;
6833 		if (topline > y)
6834 		    topline = y;
6835 	    }
6836 	}
6837 	if (topline < 1)
6838 	    topline = 1;
6839     }
6840     else
6841     {
6842 	topline = 1;
6843     }
6844 
6845 
6846     /*
6847      * set all scrollbind windows to the same topline
6848      */
6849     wp = curwin;
6850     for (curwin = firstwin; curwin; curwin = curwin->w_next)
6851     {
6852 	if (curwin->w_p_scb)
6853 	{
6854 	    y = topline - curwin->w_topline;
6855 	    if (y > 0)
6856 		scrollup(y, TRUE);
6857 	    else
6858 		scrolldown(-y, TRUE);
6859 	    curwin->w_scbind_pos = topline;
6860 	    redraw_later(VALID);
6861 	    cursor_correct();
6862 #ifdef FEAT_WINDOWS
6863 	    curwin->w_redr_status = TRUE;
6864 #endif
6865 	}
6866     }
6867     curwin = wp;
6868     if (curwin->w_p_scb)
6869     {
6870 	did_syncbind = TRUE;
6871 	checkpcmark();
6872 	if (old_linenr != curwin->w_cursor.lnum)
6873 	{
6874 	    char_u ctrl_o[2];
6875 
6876 	    ctrl_o[0] = Ctrl_O;
6877 	    ctrl_o[1] = 0;
6878 	    ins_typebuf(ctrl_o, REMAP_NONE, 0, TRUE, FALSE);
6879 	}
6880     }
6881 #endif
6882 }
6883 
6884 
6885     static void
6886 ex_read(eap)
6887     exarg_T	*eap;
6888 {
6889     int	    i;
6890 
6891     if (eap->usefilter)			/* :r!cmd */
6892 	do_bang(1, eap, FALSE, FALSE, TRUE);
6893     else
6894     {
6895 	if (u_save(eap->line2, (linenr_T)(eap->line2 + 1)) == FAIL)
6896 	    return;
6897 
6898 #ifdef FEAT_BROWSE
6899 	if (cmdmod.browse)
6900 	{
6901 	    char_u *browseFile;
6902 
6903 	    browseFile = do_browse(0, (char_u *)_("Append File"), eap->arg,
6904 						    NULL, NULL, NULL, curbuf);
6905 	    if (browseFile != NULL)
6906 	    {
6907 		i = readfile(browseFile, NULL,
6908 			  eap->line2, (linenr_T)0, (linenr_T)MAXLNUM, eap, 0);
6909 		vim_free(browseFile);
6910 	    }
6911 	    else
6912 		i = OK;
6913 	}
6914 	else
6915 #endif
6916 	     if (*eap->arg == NUL)
6917 	{
6918 	    if (check_fname() == FAIL)	/* check for no file name */
6919 		return;
6920 	    i = readfile(curbuf->b_ffname, curbuf->b_fname,
6921 			  eap->line2, (linenr_T)0, (linenr_T)MAXLNUM, eap, 0);
6922 	}
6923 	else
6924 	{
6925 	    if (vim_strchr(p_cpo, CPO_ALTREAD) != NULL)
6926 		(void)setaltfname(eap->arg, eap->arg, (linenr_T)1);
6927 	    i = readfile(eap->arg, NULL,
6928 			  eap->line2, (linenr_T)0, (linenr_T)MAXLNUM, eap, 0);
6929 
6930 	}
6931 	if (i == FAIL)
6932 	{
6933 #if defined(FEAT_AUTOCMD) && defined(FEAT_EVAL)
6934 	    if (!aborting())
6935 #endif
6936 		EMSG2(_(e_notopen), eap->arg);
6937 	}
6938 	else
6939 	    redraw_curbuf_later(VALID);
6940     }
6941 }
6942 
6943 /*
6944  * ":cd", ":lcd", ":chdir" and ":lchdir".
6945  */
6946     static void
6947 ex_cd(eap)
6948     exarg_T	*eap;
6949 {
6950     static char_u	*prev_dir = NULL;
6951     char_u		*new_dir;
6952     char_u		*tofree;
6953 
6954     new_dir = eap->arg;
6955 #if !defined(UNIX) && !defined(VMS)
6956     /* for non-UNIX ":cd" means: print current directory */
6957     if (*new_dir == NUL)
6958 	ex_pwd(NULL);
6959     else
6960 #endif
6961     {
6962 	/* ":cd -": Change to previous directory */
6963 	if (STRCMP(new_dir, "-") == 0)
6964 	{
6965 	    if (prev_dir == NULL)
6966 	    {
6967 		EMSG(_("E186: No previous directory"));
6968 		return;
6969 	    }
6970 	    new_dir = prev_dir;
6971 	}
6972 
6973 	/* Save current directory for next ":cd -" */
6974 	tofree = prev_dir;
6975 	if (mch_dirname(NameBuff, MAXPATHL) == OK)
6976 	    prev_dir = vim_strsave(NameBuff);
6977 	else
6978 	    prev_dir = NULL;
6979 
6980 #if defined(UNIX) || defined(VMS)
6981 	/* for UNIX ":cd" means: go to home directory */
6982 	if (*new_dir == NUL)
6983 	{
6984 	    /* use NameBuff for home directory name */
6985 # ifdef VMS
6986 	    char_u	*p;
6987 
6988 	    p = mch_getenv((char_u *)"SYS$LOGIN");
6989 	    if (p == NULL || *p == NUL)	/* empty is the same as not set */
6990 		NameBuff[0] = NUL;
6991 	    else
6992 		STRNCPY(NameBuff, p, MAXPATHL);
6993 # else
6994 	    expand_env((char_u *)"$HOME", NameBuff, MAXPATHL);
6995 # endif
6996 	    new_dir = NameBuff;
6997 	}
6998 #endif
6999 	if (new_dir == NULL || vim_chdir(new_dir))
7000 	    EMSG(_(e_failed));
7001 	else
7002 	{
7003 	    vim_free(curwin->w_localdir);
7004 	    if (eap->cmdidx == CMD_lcd || eap->cmdidx == CMD_lchdir)
7005 	    {
7006 		/* If still in global directory, need to remember current
7007 		 * directory as global directory. */
7008 		if (globaldir == NULL && prev_dir != NULL)
7009 		    globaldir = vim_strsave(prev_dir);
7010 		/* Remember this local directory for the window. */
7011 		if (mch_dirname(NameBuff, MAXPATHL) == OK)
7012 		    curwin->w_localdir = vim_strsave(NameBuff);
7013 	    }
7014 	    else
7015 	    {
7016 		/* We are now in the global directory, no need to remember its
7017 		 * name. */
7018 		vim_free(globaldir);
7019 		globaldir = NULL;
7020 		curwin->w_localdir = NULL;
7021 	    }
7022 
7023 	    shorten_fnames(TRUE);
7024 
7025 	    /* Echo the new current directory if the command was typed. */
7026 	    if (KeyTyped)
7027 		ex_pwd(eap);
7028 	}
7029 	vim_free(tofree);
7030     }
7031 }
7032 
7033 /*
7034  * ":pwd".
7035  */
7036 /*ARGSUSED*/
7037     static void
7038 ex_pwd(eap)
7039     exarg_T	*eap;
7040 {
7041     if (mch_dirname(NameBuff, MAXPATHL) == OK)
7042     {
7043 #ifdef BACKSLASH_IN_FILENAME
7044 	slash_adjust(NameBuff);
7045 #endif
7046 	msg(NameBuff);
7047     }
7048     else
7049 	EMSG(_("E187: Unknown"));
7050 }
7051 
7052 /*
7053  * ":=".
7054  */
7055     static void
7056 ex_equal(eap)
7057     exarg_T	*eap;
7058 {
7059     smsg((char_u *)"%ld", (long)eap->line2);
7060 }
7061 
7062     static void
7063 ex_sleep(eap)
7064     exarg_T	*eap;
7065 {
7066     int	    n;
7067 
7068     if (cursor_valid())
7069     {
7070 	n = W_WINROW(curwin) + curwin->w_wrow - msg_scrolled;
7071 	if (n >= 0)
7072 	    windgoto((int)n, curwin->w_wcol);
7073     }
7074     do_sleep(eap->line2 * (*eap->arg == 'm' ? 1L : 1000L));
7075 }
7076 
7077 /*
7078  * Sleep for "msec" milliseconds, but keep checking for a CTRL-C every second.
7079  */
7080     void
7081 do_sleep(msec)
7082     long	msec;
7083 {
7084     long	done;
7085 
7086     cursor_on();
7087     out_flush();
7088     for (done = 0; !got_int && done < msec; done += 1000L)
7089     {
7090 	ui_delay(msec - done > 1000L ? 1000L : msec - done, TRUE);
7091 	ui_breakcheck();
7092     }
7093 }
7094 
7095     static void
7096 do_exmap(eap, isabbrev)
7097     exarg_T	*eap;
7098     int		isabbrev;
7099 {
7100     int	    mode;
7101     char_u  *cmdp;
7102 
7103     cmdp = eap->cmd;
7104     mode = get_map_mode(&cmdp, eap->forceit || isabbrev);
7105 
7106     switch (do_map((*cmdp == 'n') ? 2 : (*cmdp == 'u'),
7107 						    eap->arg, mode, isabbrev))
7108     {
7109 	case 1: EMSG(_(e_invarg));
7110 		break;
7111 	case 2: EMSG(isabbrev ? _(e_noabbr) : _(e_nomap));
7112 		break;
7113     }
7114 }
7115 
7116 /*
7117  * ":winsize" command (obsolete).
7118  */
7119     static void
7120 ex_winsize(eap)
7121     exarg_T	*eap;
7122 {
7123     int		w, h;
7124     char_u	*arg = eap->arg;
7125     char_u	*p;
7126 
7127     w = getdigits(&arg);
7128     arg = skipwhite(arg);
7129     p = arg;
7130     h = getdigits(&arg);
7131     if (*p != NUL && *arg == NUL)
7132 	set_shellsize(w, h, TRUE);
7133     else
7134 	EMSG(_("E465: :winsize requires two number arguments"));
7135 }
7136 
7137 #ifdef FEAT_WINDOWS
7138     static void
7139 ex_wincmd(eap)
7140     exarg_T	*eap;
7141 {
7142     int		xchar = NUL;
7143     char_u	*p;
7144 
7145     if (*eap->arg == 'g' || *eap->arg == Ctrl_G)
7146     {
7147 	/* CTRL-W g and CTRL-W CTRL-G  have an extra command character */
7148 	if (eap->arg[1] == NUL)
7149 	{
7150 	    EMSG(_(e_invarg));
7151 	    return;
7152 	}
7153 	xchar = eap->arg[1];
7154 	p = eap->arg + 2;
7155     }
7156     else
7157 	p = eap->arg + 1;
7158 
7159     eap->nextcmd = check_nextcmd(p);
7160     p = skipwhite(p);
7161     if (*p != NUL && *p != '"' && eap->nextcmd == NULL)
7162 	EMSG(_(e_invarg));
7163     else
7164     {
7165 	/* Pass flags on for ":vertical wincmd ]". */
7166 	postponed_split_flags = cmdmod.split;
7167 	do_window(*eap->arg, eap->addr_count > 0 ? eap->line2 : 0L, xchar);
7168 	postponed_split_flags = 0;
7169     }
7170 }
7171 #endif
7172 
7173 #if defined(FEAT_GUI) || defined(UNIX) || defined(VMS) || defined(MSWIN)
7174 /*
7175  * ":winpos".
7176  */
7177     static void
7178 ex_winpos(eap)
7179     exarg_T	*eap;
7180 {
7181     int		x, y;
7182     char_u	*arg = eap->arg;
7183     char_u	*p;
7184 
7185     if (*arg == NUL)
7186     {
7187 # if defined(FEAT_GUI) || defined(MSWIN)
7188 #  ifdef FEAT_GUI
7189 	if (gui.in_use && gui_mch_get_winpos(&x, &y) != FAIL)
7190 #  else
7191 	if (mch_get_winpos(&x, &y) != FAIL)
7192 #  endif
7193 	{
7194 	    sprintf((char *)IObuff, _("Window position: X %d, Y %d"), x, y);
7195 	    msg(IObuff);
7196 	}
7197 	else
7198 # endif
7199 	    EMSG(_("E188: Obtaining window position not implemented for this platform"));
7200     }
7201     else
7202     {
7203 	x = getdigits(&arg);
7204 	arg = skipwhite(arg);
7205 	p = arg;
7206 	y = getdigits(&arg);
7207 	if (*p == NUL || *arg != NUL)
7208 	{
7209 	    EMSG(_("E466: :winpos requires two number arguments"));
7210 	    return;
7211 	}
7212 # ifdef FEAT_GUI
7213 	if (gui.in_use)
7214 	    gui_mch_set_winpos(x, y);
7215 	else if (gui.starting)
7216 	{
7217 	    /* Remember the coordinates for when the window is opened. */
7218 	    gui_win_x = x;
7219 	    gui_win_y = y;
7220 	}
7221 #  ifdef HAVE_TGETENT
7222 	else
7223 #  endif
7224 # else
7225 #  ifdef MSWIN
7226 	    mch_set_winpos(x, y);
7227 #  endif
7228 # endif
7229 # ifdef HAVE_TGETENT
7230 	if (*T_CWP)
7231 	    term_set_winpos(x, y);
7232 # endif
7233     }
7234 }
7235 #endif
7236 
7237 /*
7238  * Handle command that work like operators: ":delete", ":yank", ":>" and ":<".
7239  */
7240     static void
7241 ex_operators(eap)
7242     exarg_T	*eap;
7243 {
7244     oparg_T	oa;
7245 
7246     clear_oparg(&oa);
7247     oa.regname = eap->regname;
7248     oa.start.lnum = eap->line1;
7249     oa.end.lnum = eap->line2;
7250     oa.line_count = eap->line2 - eap->line1 + 1;
7251     oa.motion_type = MLINE;
7252 #ifdef FEAT_VIRTUALEDIT
7253     virtual_op = FALSE;
7254 #endif
7255     if (eap->cmdidx != CMD_yank)	/* position cursor for undo */
7256     {
7257 	setpcmark();
7258 	curwin->w_cursor.lnum = eap->line1;
7259 	beginline(BL_SOL | BL_FIX);
7260     }
7261 
7262     switch (eap->cmdidx)
7263     {
7264 	case CMD_delete:
7265 	    oa.op_type = OP_DELETE;
7266 	    op_delete(&oa);
7267 	    break;
7268 
7269 	case CMD_yank:
7270 	    oa.op_type = OP_YANK;
7271 	    (void)op_yank(&oa, FALSE, TRUE);
7272 	    break;
7273 
7274 	default:    /* CMD_rshift or CMD_lshift */
7275 	    if ((eap->cmdidx == CMD_rshift)
7276 #ifdef FEAT_RIGHTLEFT
7277 				    ^ curwin->w_p_rl
7278 #endif
7279 						    )
7280 		oa.op_type = OP_RSHIFT;
7281 	    else
7282 		oa.op_type = OP_LSHIFT;
7283 	    op_shift(&oa, FALSE, eap->amount);
7284 	    break;
7285     }
7286 #ifdef FEAT_VIRTUALEDIT
7287     virtual_op = MAYBE;
7288 #endif
7289 }
7290 
7291 /*
7292  * ":put".
7293  */
7294     static void
7295 ex_put(eap)
7296     exarg_T	*eap;
7297 {
7298     /* ":0put" works like ":1put!". */
7299     if (eap->line2 == 0)
7300     {
7301 	eap->line2 = 1;
7302 	eap->forceit = TRUE;
7303     }
7304     curwin->w_cursor.lnum = eap->line2;
7305     do_put(eap->regname, eap->forceit ? BACKWARD : FORWARD, 1L, PUT_LINE);
7306 }
7307 
7308 /*
7309  * Handle ":copy" and ":move".
7310  */
7311     static void
7312 ex_copymove(eap)
7313     exarg_T	*eap;
7314 {
7315     long	n;
7316 
7317     n = get_address(&eap->arg, FALSE, FALSE);
7318     if (eap->arg == NULL)	    /* error detected */
7319     {
7320 	eap->nextcmd = NULL;
7321 	return;
7322     }
7323 
7324     /*
7325      * move or copy lines from 'eap->line1'-'eap->line2' to below line 'n'
7326      */
7327     if (n == MAXLNUM || n < 0 || n > curbuf->b_ml.ml_line_count)
7328     {
7329 	EMSG(_(e_invaddr));
7330 	return;
7331     }
7332 
7333     if (eap->cmdidx == CMD_move)
7334     {
7335 	if (do_move(eap->line1, eap->line2, n) == FAIL)
7336 	    return;
7337     }
7338     else
7339 	ex_copy(eap->line1, eap->line2, n);
7340     u_clearline();
7341     beginline(BL_SOL | BL_FIX);
7342 }
7343 
7344 /*
7345  * ":smagic" and ":snomagic".
7346  */
7347     static void
7348 ex_submagic(eap)
7349     exarg_T	*eap;
7350 {
7351     int		magic_save = p_magic;
7352 
7353     p_magic = (eap->cmdidx == CMD_smagic);
7354     do_sub(eap);
7355     p_magic = magic_save;
7356 }
7357 
7358 /*
7359  * ":join".
7360  */
7361     static void
7362 ex_join(eap)
7363     exarg_T	*eap;
7364 {
7365     curwin->w_cursor.lnum = eap->line1;
7366     if (eap->line1 == eap->line2)
7367     {
7368 	if (eap->addr_count >= 2)   /* :2,2join does nothing */
7369 	    return;
7370 	if (eap->line2 == curbuf->b_ml.ml_line_count)
7371 	{
7372 	    beep_flush();
7373 	    return;
7374 	}
7375 	++eap->line2;
7376     }
7377     do_do_join(eap->line2 - eap->line1 + 1, !eap->forceit);
7378     beginline(BL_WHITE | BL_FIX);
7379 }
7380 
7381 /*
7382  * ":[addr]@r" or ":[addr]*r": execute register
7383  */
7384     static void
7385 ex_at(eap)
7386     exarg_T	*eap;
7387 {
7388     int		c;
7389 
7390     curwin->w_cursor.lnum = eap->line2;
7391 
7392 #ifdef USE_ON_FLY_SCROLL
7393     dont_scroll = TRUE;		/* disallow scrolling here */
7394 #endif
7395 
7396     /* get the register name.  No name means to use the previous one */
7397     c = *eap->arg;
7398     if (c == NUL || (c == '*' && *eap->cmd == '*'))
7399 	c = '@';
7400     /* put the register in mapbuf */
7401     if (do_execreg(c, TRUE, vim_strchr(p_cpo, CPO_EXECBUF) != NULL) == FAIL)
7402 	beep_flush();
7403     else
7404     {
7405 	int	save_efr = exec_from_reg;
7406 
7407 	exec_from_reg = TRUE;
7408 
7409 	/*
7410 	 * Execute from the typeahead buffer.
7411 	 * Originally this didn't check for the typeahead buffer to be empty,
7412 	 * thus could read more Ex commands from stdin.  It's not clear why,
7413 	 * it is certainly unexpected.
7414 	 */
7415 	while ((!stuff_empty() || typebuf.tb_len > 0) && vpeekc() == ':')
7416 	    (void)do_cmdline(NULL, getexline, NULL, DOCMD_NOWAIT|DOCMD_VERBOSE);
7417 
7418 	exec_from_reg = save_efr;
7419     }
7420 }
7421 
7422 /*
7423  * ":!".
7424  */
7425     static void
7426 ex_bang(eap)
7427     exarg_T	*eap;
7428 {
7429     do_bang(eap->addr_count, eap, eap->forceit, TRUE, TRUE);
7430 }
7431 
7432 /*
7433  * ":undo".
7434  */
7435 /*ARGSUSED*/
7436     static void
7437 ex_undo(eap)
7438     exarg_T	*eap;
7439 {
7440     u_undo(1);
7441 }
7442 
7443 /*
7444  * ":redo".
7445  */
7446 /*ARGSUSED*/
7447     static void
7448 ex_redo(eap)
7449     exarg_T	*eap;
7450 {
7451     u_redo(1);
7452 }
7453 
7454 /*
7455  * ":redir": start/stop redirection.
7456  */
7457     static void
7458 ex_redir(eap)
7459     exarg_T	*eap;
7460 {
7461     char	*mode;
7462     char_u	*fname;
7463 
7464     if (STRICMP(eap->arg, "END") == 0)
7465 	close_redir();
7466     else
7467     {
7468 	if (*eap->arg == '>')
7469 	{
7470 	    ++eap->arg;
7471 	    if (*eap->arg == '>')
7472 	    {
7473 		++eap->arg;
7474 		mode = "a";
7475 	    }
7476 	    else
7477 		mode = "w";
7478 	    eap->arg = skipwhite(eap->arg);
7479 
7480 	    close_redir();
7481 
7482 	    /* Expand environment variables and "~/". */
7483 	    fname = expand_env_save(eap->arg);
7484 	    if (fname == NULL)
7485 		return;
7486 #ifdef FEAT_BROWSE
7487 	    if (cmdmod.browse)
7488 	    {
7489 		char_u	*browseFile;
7490 
7491 		browseFile = do_browse(BROWSE_SAVE,
7492 			(char_u *)_("Save Redirection"),
7493 			fname, NULL, NULL, BROWSE_FILTER_ALL_FILES, curbuf);
7494 		if (browseFile == NULL)
7495 		    return;		/* operation cancelled */
7496 		vim_free(fname);
7497 		fname = browseFile;
7498 		eap->forceit = TRUE;	/* since dialog already asked */
7499 	    }
7500 #endif
7501 
7502 	    redir_fd = open_exfile(fname, eap->forceit, mode);
7503 	    vim_free(fname);
7504 	}
7505 #ifdef FEAT_EVAL
7506 	else if (*eap->arg == '@')
7507 	{
7508 	    /* redirect to a register a-z (resp. A-Z for appending) */
7509 	    close_redir();
7510 	    ++eap->arg;
7511 	    if (ASCII_ISALPHA(*eap->arg)
7512 # ifdef FEAT_CLIPBOARD
7513 		    || *eap->arg == '*'
7514 # endif
7515 		    || *eap->arg == '"')
7516 	    {
7517 		redir_reg = *eap->arg;
7518 		if (islower(redir_reg)
7519 # ifdef FEAT_CLIPBOARD
7520 			|| redir_reg == '*'
7521 # endif
7522 			|| redir_reg == '"')
7523 		{
7524 		    /* make register empty */
7525 		    write_reg_contents(redir_reg, (char_u *)"", -1, FALSE);
7526 		}
7527 	    }
7528 	    else
7529 		EMSG(_(e_invarg));
7530 	}
7531 #endif
7532 
7533 	/* TODO: redirect to a buffer */
7534 
7535 	/* TODO: redirect to an internal variable */
7536 
7537 	else
7538 	    EMSG(_(e_invarg));
7539     }
7540 }
7541 
7542 /*
7543  * ":redraw": force redraw
7544  */
7545     static void
7546 ex_redraw(eap)
7547     exarg_T	*eap;
7548 {
7549     int		r = RedrawingDisabled;
7550     int		p = p_lz;
7551 
7552     RedrawingDisabled = 0;
7553     p_lz = FALSE;
7554     update_topline();
7555     update_screen(eap->forceit ? CLEAR :
7556 #ifdef FEAT_VISUAL
7557 	    VIsual_active ? INVERTED :
7558 #endif
7559 	    0);
7560 #ifdef FEAT_TITLE
7561     if (need_maketitle)
7562 	maketitle();
7563 #endif
7564     RedrawingDisabled = r;
7565     p_lz = p;
7566 
7567     /* Reset msg_didout, so that a message that's there is overwritten. */
7568     msg_didout = FALSE;
7569     msg_col = 0;
7570 
7571     out_flush();
7572 }
7573 
7574 /*
7575  * ":redrawstatus": force redraw of status line(s)
7576  */
7577 /*ARGSUSED*/
7578     static void
7579 ex_redrawstatus(eap)
7580     exarg_T	*eap;
7581 {
7582 #if defined(FEAT_WINDOWS)
7583     int		r = RedrawingDisabled;
7584     int		p = p_lz;
7585 
7586     RedrawingDisabled = 0;
7587     p_lz = FALSE;
7588     if (eap->forceit)
7589 	status_redraw_all();
7590     else
7591 	status_redraw_curbuf();
7592     update_screen(
7593 # ifdef FEAT_VISUAL
7594 	    VIsual_active ? INVERTED :
7595 # endif
7596 	    0);
7597     RedrawingDisabled = r;
7598     p_lz = p;
7599     out_flush();
7600 #endif
7601 }
7602 
7603     static void
7604 close_redir()
7605 {
7606     if (redir_fd != NULL)
7607     {
7608 	fclose(redir_fd);
7609 	redir_fd = NULL;
7610     }
7611 #ifdef FEAT_EVAL
7612     redir_reg = 0;
7613 #endif
7614 }
7615 
7616 #if defined(FEAT_SESSION) && defined(USE_CRNL)
7617 # define MKSESSION_NL
7618 static int mksession_nl = FALSE;    /* use NL only in put_eol() */
7619 #endif
7620 
7621 /*
7622  * ":mkexrc", ":mkvimrc", ":mkview" and ":mksession".
7623  */
7624     static void
7625 ex_mkrc(eap)
7626     exarg_T	*eap;
7627 {
7628     FILE	*fd;
7629     int		failed = FALSE;
7630     char_u	*fname;
7631 #ifdef FEAT_BROWSE
7632     char_u	*browseFile = NULL;
7633 #endif
7634 #ifdef FEAT_SESSION
7635     int		view_session = FALSE;
7636     int		using_vdir = FALSE;	/* using 'viewdir'? */
7637     char_u	*viewFile = NULL;
7638     unsigned	*flagp;
7639 #endif
7640 
7641     if (eap->cmdidx == CMD_mksession || eap->cmdidx == CMD_mkview)
7642     {
7643 #ifdef FEAT_SESSION
7644 	view_session = TRUE;
7645 #else
7646 	ex_ni(eap);
7647 	return;
7648 #endif
7649     }
7650 
7651 #ifdef FEAT_SESSION
7652     /* ":mkview" or ":mkview 9": generate file name with 'viewdir' */
7653     if (eap->cmdidx == CMD_mkview
7654 	    && (*eap->arg == NUL
7655 		|| (vim_isdigit(*eap->arg) && eap->arg[1] == NUL)))
7656     {
7657 	eap->forceit = TRUE;
7658 	fname = get_view_file(*eap->arg);
7659 	if (fname == NULL)
7660 	    return;
7661 	viewFile = fname;
7662 	using_vdir = TRUE;
7663     }
7664     else
7665 #endif
7666 	if (*eap->arg != NUL)
7667 	fname = eap->arg;
7668     else if (eap->cmdidx == CMD_mkvimrc)
7669 	fname = (char_u *)VIMRC_FILE;
7670 #ifdef FEAT_SESSION
7671     else if (eap->cmdidx == CMD_mksession)
7672 	fname = (char_u *)SESSION_FILE;
7673 #endif
7674     else
7675 	fname = (char_u *)EXRC_FILE;
7676 
7677 #ifdef FEAT_BROWSE
7678     if (cmdmod.browse)
7679     {
7680 	browseFile = do_browse(BROWSE_SAVE,
7681 # ifdef FEAT_SESSION
7682 		eap->cmdidx == CMD_mkview ? (char_u *)_("Save View") :
7683 		eap->cmdidx == CMD_mksession ? (char_u *)_("Save Session") :
7684 # endif
7685 		(char_u *)_("Save Setup"),
7686 		fname, (char_u *)"vim", NULL, BROWSE_FILTER_MACROS, NULL);
7687 	if (browseFile == NULL)
7688 	    goto theend;
7689 	fname = browseFile;
7690 	eap->forceit = TRUE;	/* since dialog already asked */
7691     }
7692 #endif
7693 
7694 #if defined(FEAT_SESSION) && defined(vim_mkdir)
7695     /* When using 'viewdir' may have to create the directory. */
7696     if (using_vdir && !mch_isdir(p_vdir))
7697 	vim_mkdir(p_vdir, 0755); /* ignore errors, open_exfile() will fail */
7698 #endif
7699 
7700     fd = open_exfile(fname, eap->forceit, WRITEBIN);
7701     if (fd != NULL)
7702     {
7703 #ifdef FEAT_SESSION
7704 	if (eap->cmdidx == CMD_mkview)
7705 	    flagp = &vop_flags;
7706 	else
7707 	    flagp = &ssop_flags;
7708 #endif
7709 
7710 #ifdef MKSESSION_NL
7711 	/* "unix" in 'sessionoptions': use NL line separator */
7712 	if (view_session && (*flagp & SSOP_UNIX))
7713 	    mksession_nl = TRUE;
7714 #endif
7715 
7716 	/* Write the version command for :mkvimrc */
7717 	if (eap->cmdidx == CMD_mkvimrc)
7718 	    (void)put_line(fd, "version 6.0");
7719 
7720 #ifdef FEAT_SESSION
7721 	if (eap->cmdidx != CMD_mkview)
7722 #endif
7723 	{
7724 	    /* Write setting 'compatible' first, because it has side effects.
7725 	     * For that same reason only do it when needed. */
7726 	    if (p_cp)
7727 		(void)put_line(fd, "if !&cp | set cp | endif");
7728 	    else
7729 		(void)put_line(fd, "if &cp | set nocp | endif");
7730 	}
7731 
7732 #ifdef FEAT_SESSION
7733 	if (!view_session
7734 		|| (eap->cmdidx == CMD_mksession
7735 		    && (*flagp & SSOP_OPTIONS)))
7736 #endif
7737 	    failed |= (makemap(fd, NULL) == FAIL
7738 				   || makeset(fd, OPT_GLOBAL, FALSE) == FAIL);
7739 
7740 #ifdef FEAT_SESSION
7741 	if (!failed && view_session)
7742 	{
7743 	    if (put_line(fd, "let s:so_save = &so | let s:siso_save = &siso | set so=0 siso=0") == FAIL)
7744 		failed = TRUE;
7745 	    if (eap->cmdidx == CMD_mksession)
7746 	    {
7747 		char_u dirnow[MAXPATHL];	/* current directory */
7748 
7749 		/*
7750 		 * Change to session file's dir.
7751 		 */
7752 		if (mch_dirname(dirnow, MAXPATHL) == FAIL
7753 					    || mch_chdir((char *)dirnow) != 0)
7754 		    *dirnow = NUL;
7755 		if (*dirnow != NUL && (ssop_flags & SSOP_SESDIR))
7756 		{
7757 		    if (vim_chdirfile(fname) == OK)
7758 			shorten_fnames(TRUE);
7759 		}
7760 		else if (*dirnow != NUL
7761 			&& (ssop_flags & SSOP_CURDIR) && globaldir != NULL)
7762 		{
7763 		    (void)mch_chdir((char *)globaldir);
7764 		    shorten_fnames(TRUE);
7765 		}
7766 
7767 		failed |= (makeopens(fd, dirnow) == FAIL);
7768 
7769 		/* restore original dir */
7770 		if (*dirnow != NUL && ((ssop_flags & SSOP_SESDIR)
7771 			|| ((ssop_flags & SSOP_CURDIR) && globaldir != NULL)))
7772 		{
7773 		    if (mch_chdir((char *)dirnow) != 0)
7774 			EMSG(_(e_prev_dir));
7775 		    shorten_fnames(TRUE);
7776 		}
7777 	    }
7778 	    else
7779 	    {
7780 		failed |= (put_view(fd, curwin, !using_vdir, flagp) == FAIL);
7781 	    }
7782 	    if (put_line(fd, "let &so = s:so_save | let &siso = s:siso_save")
7783 								      == FAIL)
7784 		failed = TRUE;
7785 	}
7786 #endif
7787 	failed |= fclose(fd);
7788 
7789 	if (failed)
7790 	    EMSG(_(e_write));
7791 #if defined(FEAT_EVAL) && defined(FEAT_SESSION)
7792 	else if (eap->cmdidx == CMD_mksession)
7793 	{
7794 	    /* successful session write - set this_session var */
7795 	    char_u	tbuf[MAXPATHL];
7796 
7797 	    if (vim_FullName(fname, tbuf, MAXPATHL, FALSE) == OK)
7798 		set_vim_var_string(VV_THIS_SESSION, tbuf, -1);
7799 	}
7800 #endif
7801 #ifdef MKSESSION_NL
7802 	mksession_nl = FALSE;
7803 #endif
7804     }
7805 
7806 #ifdef FEAT_BROWSE
7807 theend:
7808     vim_free(browseFile);
7809 #endif
7810 #ifdef FEAT_SESSION
7811     vim_free(viewFile);
7812 #endif
7813 }
7814 
7815 /*
7816  * Open a file for writing for an Ex command, with some checks.
7817  * Return file descriptor, or NULL on failure.
7818  */
7819     FILE *
7820 open_exfile(fname, forceit, mode)
7821     char_u	*fname;
7822     int		forceit;
7823     char	*mode;	    /* "w" for create new file or "a" for append */
7824 {
7825     FILE	*fd;
7826 
7827 #ifdef UNIX
7828     /* with Unix it is possible to open a directory */
7829     if (mch_isdir(fname))
7830     {
7831 	EMSG2(_(e_isadir2), fname);
7832 	return NULL;
7833     }
7834 #endif
7835     if (!forceit && *mode != 'a' && vim_fexists(fname))
7836     {
7837 	EMSG2(_("E189: \"%s\" exists (add ! to override)"), fname);
7838 	return NULL;
7839     }
7840 
7841     if ((fd = mch_fopen((char *)fname, mode)) == NULL)
7842 	EMSG2(_("E190: Cannot open \"%s\" for writing"), fname);
7843 
7844     return fd;
7845 }
7846 
7847 /*
7848  * ":mark" and ":k".
7849  */
7850     static void
7851 ex_mark(eap)
7852     exarg_T	*eap;
7853 {
7854     pos_T	pos;
7855 
7856     if (*eap->arg == NUL)		/* No argument? */
7857 	EMSG(_(e_argreq));
7858     else if (eap->arg[1] != NUL)	/* more than one character? */
7859 	EMSG(_(e_trailing));
7860     else
7861     {
7862 	pos = curwin->w_cursor;		/* save curwin->w_cursor */
7863 	curwin->w_cursor.lnum = eap->line2;
7864 	beginline(BL_WHITE | BL_FIX);
7865 	if (setmark(*eap->arg) == FAIL)	/* set mark */
7866 	    EMSG(_("E191: Argument must be a letter or forward/backward quote"));
7867 	curwin->w_cursor = pos;		/* restore curwin->w_cursor */
7868     }
7869 }
7870 
7871 /*
7872  * Update w_topline, w_leftcol and the cursor position.
7873  */
7874     void
7875 update_topline_cursor()
7876 {
7877     check_cursor();		/* put cursor on valid line */
7878     update_topline();
7879     if (!curwin->w_p_wrap)
7880 	validate_cursor();
7881     update_curswant();
7882 }
7883 
7884 #ifdef FEAT_EX_EXTRA
7885 /*
7886  * ":normal[!] {commands}": Execute normal mode commands.
7887  */
7888     static void
7889 ex_normal(eap)
7890     exarg_T	*eap;
7891 {
7892     oparg_T	oa;
7893     int		save_msg_scroll = msg_scroll;
7894     int		save_restart_edit = restart_edit;
7895     int		save_msg_didout = msg_didout;
7896     int		save_State = State;
7897     tasave_T	tabuf;
7898     int		save_insertmode = p_im;
7899     int		save_finish_op = finish_op;
7900 #ifdef FEAT_MBYTE
7901     char_u	*arg = NULL;
7902     int		l;
7903     char_u	*p;
7904 #endif
7905 
7906     if (ex_normal_busy >= p_mmd)
7907     {
7908 	EMSG(_("E192: Recursive use of :normal too deep"));
7909 	return;
7910     }
7911     ++ex_normal_busy;
7912 
7913     msg_scroll = FALSE;	    /* no msg scrolling in Normal mode */
7914     restart_edit = 0;	    /* don't go to Insert mode */
7915     p_im = FALSE;	    /* don't use 'insertmode' */
7916 
7917 #ifdef FEAT_MBYTE
7918     /*
7919      * vgetc() expects a CSI and K_SPECIAL to have been escaped.  Don't do
7920      * this for the K_SPECIAL leading byte, otherwise special keys will not
7921      * work.
7922      */
7923     if (has_mbyte)
7924     {
7925 	int	len = 0;
7926 
7927 	/* Count the number of characters to be escaped. */
7928 	for (p = eap->arg; *p != NUL; ++p)
7929 	{
7930 # ifdef FEAT_GUI
7931 	    if (*p == CSI)  /* leadbyte CSI */
7932 		len += 2;
7933 # endif
7934 	    for (l = (*mb_ptr2len_check)(p) - 1; l > 0; --l)
7935 		if (*++p == K_SPECIAL	  /* trailbyte K_SPECIAL or CSI */
7936 # ifdef FEAT_GUI
7937 			|| *p == CSI
7938 # endif
7939 			)
7940 		    len += 2;
7941 	}
7942 	if (len > 0)
7943 	{
7944 	    arg = alloc((unsigned)(STRLEN(eap->arg) + len + 1));
7945 	    if (arg != NULL)
7946 	    {
7947 		len = 0;
7948 		for (p = eap->arg; *p != NUL; ++p)
7949 		{
7950 		    arg[len++] = *p;
7951 # ifdef FEAT_GUI
7952 		    if (*p == CSI)
7953 		    {
7954 			arg[len++] = KS_EXTRA;
7955 			arg[len++] = (int)KE_CSI;
7956 		    }
7957 # endif
7958 		    for (l = (*mb_ptr2len_check)(p) - 1; l > 0; --l)
7959 		    {
7960 			arg[len++] = *++p;
7961 			if (*p == K_SPECIAL)
7962 			{
7963 			    arg[len++] = KS_SPECIAL;
7964 			    arg[len++] = KE_FILLER;
7965 			}
7966 # ifdef FEAT_GUI
7967 			else if (*p == CSI)
7968 			{
7969 			    arg[len++] = KS_EXTRA;
7970 			    arg[len++] = (int)KE_CSI;
7971 			}
7972 # endif
7973 		    }
7974 		    arg[len] = NUL;
7975 		}
7976 	    }
7977 	}
7978     }
7979 #endif
7980 
7981     /*
7982      * Save the current typeahead.  This is required to allow using ":normal"
7983      * from an event handler and makes sure we don't hang when the argument
7984      * ends with half a command.
7985      */
7986     save_typeahead(&tabuf);
7987     if (tabuf.typebuf_valid)
7988     {
7989 	/*
7990 	 * Repeat the :normal command for each line in the range.  When no
7991 	 * range given, execute it just once, without positioning the cursor
7992 	 * first.
7993 	 */
7994 	do
7995 	{
7996 	    clear_oparg(&oa);
7997 	    finish_op = FALSE;
7998 	    if (eap->addr_count != 0)
7999 	    {
8000 		curwin->w_cursor.lnum = eap->line1++;
8001 		curwin->w_cursor.col = 0;
8002 	    }
8003 
8004 	    /*
8005 	     * Stuff the argument into the typeahead buffer.
8006 	     * Execute normal_cmd() until there is no typeahead left.
8007 	     */
8008 	    ins_typebuf(
8009 #ifdef FEAT_MBYTE
8010 		    arg != NULL ? arg :
8011 #endif
8012 		    eap->arg, eap->forceit ? REMAP_NONE : REMAP_YES, 0,
8013 								 TRUE, FALSE);
8014 	    while ((!stuff_empty() || (!typebuf_typed() && typebuf.tb_len > 0))
8015 		    && !got_int)
8016 	    {
8017 		update_topline_cursor();
8018 		normal_cmd(&oa, FALSE);	/* execute a Normal mode cmd */
8019 	    }
8020 	}
8021 	while (eap->addr_count > 0 && eap->line1 <= eap->line2 && !got_int);
8022     }
8023 
8024     /* Might not return to the main loop when in an event handler. */
8025     update_topline_cursor();
8026 
8027     /* Restore the previous typeahead. */
8028     restore_typeahead(&tabuf);
8029 
8030     --ex_normal_busy;
8031     msg_scroll = save_msg_scroll;
8032     restart_edit = save_restart_edit;
8033     p_im = save_insertmode;
8034     finish_op = save_finish_op;
8035     msg_didout |= save_msg_didout;	/* don't reset msg_didout now */
8036 
8037     /* Restore the state (needed when called from a function executed for
8038      * 'indentexpr'). */
8039     State = save_State;
8040 #ifdef FEAT_MBYTE
8041     vim_free(arg);
8042 #endif
8043 }
8044 
8045 /*
8046  * ":startinsert" and ":startreplace"
8047  */
8048     static void
8049 ex_startinsert(eap)
8050     exarg_T	*eap;
8051 {
8052     if (eap->forceit)
8053     {
8054 	coladvance((colnr_T)MAXCOL);
8055 	curwin->w_curswant = MAXCOL;
8056 	curwin->w_set_curswant = FALSE;
8057 	if (eap->cmdidx == CMD_startinsert)
8058 	    restart_edit = 'a';
8059 	else
8060 	    restart_edit = 'R';
8061     }
8062     else
8063     {
8064 	if (eap->cmdidx == CMD_startinsert)
8065 	    restart_edit = 'i';
8066 	else
8067 	    restart_edit = 'R';
8068 	curwin->w_curswant = 0;	    /* avoid MAXCOL */
8069     }
8070 }
8071 
8072 /*
8073  * ":stopinsert"
8074  */
8075 /*ARGSUSED*/
8076     static void
8077 ex_stopinsert(eap)
8078     exarg_T	*eap;
8079 {
8080     restart_edit = 0;
8081     stop_insert_mode = TRUE;
8082 }
8083 #endif
8084 
8085 #ifdef FEAT_FIND_ID
8086     static void
8087 ex_checkpath(eap)
8088     exarg_T	*eap;
8089 {
8090     find_pattern_in_path(NULL, 0, 0, FALSE, FALSE, CHECK_PATH, 1L,
8091 				   eap->forceit ? ACTION_SHOW_ALL : ACTION_SHOW,
8092 					      (linenr_T)1, (linenr_T)MAXLNUM);
8093 }
8094 
8095 #if defined(FEAT_WINDOWS) && defined(FEAT_QUICKFIX)
8096 /*
8097  * ":psearch"
8098  */
8099     static void
8100 ex_psearch(eap)
8101     exarg_T	*eap;
8102 {
8103     g_do_tagpreview = p_pvh;
8104     ex_findpat(eap);
8105     g_do_tagpreview = 0;
8106 }
8107 #endif
8108 
8109     static void
8110 ex_findpat(eap)
8111     exarg_T	*eap;
8112 {
8113     int		whole = TRUE;
8114     long	n;
8115     char_u	*p;
8116     int		action;
8117 
8118     switch (cmdnames[eap->cmdidx].cmd_name[2])
8119     {
8120 	case 'e':	/* ":psearch", ":isearch" and ":dsearch" */
8121 		if (cmdnames[eap->cmdidx].cmd_name[0] == 'p')
8122 		    action = ACTION_GOTO;
8123 		else
8124 		    action = ACTION_SHOW;
8125 		break;
8126 	case 'i':	/* ":ilist" and ":dlist" */
8127 		action = ACTION_SHOW_ALL;
8128 		break;
8129 	case 'u':	/* ":ijump" and ":djump" */
8130 		action = ACTION_GOTO;
8131 		break;
8132 	default:	/* ":isplit" and ":dsplit" */
8133 		action = ACTION_SPLIT;
8134 		break;
8135     }
8136 
8137     n = 1;
8138     if (vim_isdigit(*eap->arg))	/* get count */
8139     {
8140 	n = getdigits(&eap->arg);
8141 	eap->arg = skipwhite(eap->arg);
8142     }
8143     if (*eap->arg == '/')   /* Match regexp, not just whole words */
8144     {
8145 	whole = FALSE;
8146 	++eap->arg;
8147 	p = skip_regexp(eap->arg, '/', p_magic, NULL);
8148 	if (*p)
8149 	{
8150 	    *p++ = NUL;
8151 	    p = skipwhite(p);
8152 
8153 	    /* Check for trailing illegal characters */
8154 	    if (!ends_excmd(*p))
8155 		eap->errmsg = e_trailing;
8156 	    else
8157 		eap->nextcmd = check_nextcmd(p);
8158 	}
8159     }
8160     if (!eap->skip)
8161 	find_pattern_in_path(eap->arg, 0, (int)STRLEN(eap->arg),
8162 			    whole, !eap->forceit,
8163 			    *eap->cmd == 'd' ?	FIND_DEFINE : FIND_ANY,
8164 			    n, action, eap->line1, eap->line2);
8165 }
8166 #endif
8167 
8168 #ifdef FEAT_WINDOWS
8169 
8170 # ifdef FEAT_QUICKFIX
8171 /*
8172  * ":ptag", ":ptselect", ":ptjump", ":ptnext", etc.
8173  */
8174     static void
8175 ex_ptag(eap)
8176     exarg_T	*eap;
8177 {
8178     g_do_tagpreview = p_pvh;
8179     ex_tag_cmd(eap, cmdnames[eap->cmdidx].cmd_name + 1);
8180 }
8181 
8182 /*
8183  * ":pedit"
8184  */
8185     static void
8186 ex_pedit(eap)
8187     exarg_T	*eap;
8188 {
8189     win_T	*curwin_save = curwin;
8190 
8191     g_do_tagpreview = p_pvh;
8192     prepare_tagpreview();
8193     keep_help_flag = curwin_save->w_buffer->b_help;
8194     do_exedit(eap, NULL);
8195     keep_help_flag = FALSE;
8196     if (curwin != curwin_save && win_valid(curwin_save))
8197     {
8198 	/* Return cursor to where we were */
8199 	validate_cursor();
8200 	redraw_later(VALID);
8201 	win_enter(curwin_save, TRUE);
8202     }
8203     g_do_tagpreview = 0;
8204 }
8205 # endif
8206 
8207 /*
8208  * ":stag", ":stselect" and ":stjump".
8209  */
8210     static void
8211 ex_stag(eap)
8212     exarg_T	*eap;
8213 {
8214     postponed_split = -1;
8215     postponed_split_flags = cmdmod.split;
8216     ex_tag_cmd(eap, cmdnames[eap->cmdidx].cmd_name + 1);
8217     postponed_split_flags = 0;
8218 }
8219 #endif
8220 
8221 /*
8222  * ":tag", ":tselect", ":tjump", ":tnext", etc.
8223  */
8224     static void
8225 ex_tag(eap)
8226     exarg_T	*eap;
8227 {
8228     ex_tag_cmd(eap, cmdnames[eap->cmdidx].cmd_name);
8229 }
8230 
8231     static void
8232 ex_tag_cmd(eap, name)
8233     exarg_T	*eap;
8234     char_u	*name;
8235 {
8236     int		cmd;
8237 
8238     switch (name[1])
8239     {
8240 	case 'j': cmd = DT_JUMP;	/* ":tjump" */
8241 		  break;
8242 	case 's': cmd = DT_SELECT;	/* ":tselect" */
8243 		  break;
8244 	case 'p': cmd = DT_PREV;	/* ":tprevious" */
8245 		  break;
8246 	case 'N': cmd = DT_PREV;	/* ":tNext" */
8247 		  break;
8248 	case 'n': cmd = DT_NEXT;	/* ":tnext" */
8249 		  break;
8250 	case 'o': cmd = DT_POP;		/* ":pop" */
8251 		  break;
8252 	case 'f':			/* ":tfirst" */
8253 	case 'r': cmd = DT_FIRST;	/* ":trewind" */
8254 		  break;
8255 	case 'l': cmd = DT_LAST;	/* ":tlast" */
8256 		  break;
8257 	default:			/* ":tag" */
8258 #ifdef FEAT_CSCOPE
8259 		  if (p_cst)
8260 		  {
8261 		      do_cstag(eap);
8262 		      return;
8263 		  }
8264 #endif
8265 		  cmd = DT_TAG;
8266 		  break;
8267     }
8268 
8269     do_tag(eap->arg, cmd, eap->addr_count > 0 ? (int)eap->line2 : 1,
8270 							  eap->forceit, TRUE);
8271 }
8272 
8273 /*
8274  * Evaluate cmdline variables.
8275  *
8276  * change '%'	    to curbuf->b_ffname
8277  *	  '#'	    to curwin->w_altfile
8278  *	  '<cword>' to word under the cursor
8279  *	  '<cWORD>' to WORD under the cursor
8280  *	  '<cfile>' to path name under the cursor
8281  *	  '<sfile>' to sourced file name
8282  *	  '<afile>' to file name for autocommand
8283  *	  '<abuf>'  to buffer number for autocommand
8284  *	  '<amatch>' to matching name for autocommand
8285  *
8286  * When an error is detected, "errormsg" is set to a non-NULL pointer (may be
8287  * "" for error without a message) and NULL is returned.
8288  * Returns an allocated string if a valid match was found.
8289  * Returns NULL if no match was found.	"usedlen" then still contains the
8290  * number of characters to skip.
8291  */
8292     char_u *
8293 eval_vars(src, usedlen, lnump, errormsg, srcstart)
8294     char_u	*src;		/* pointer into commandline */
8295     int		*usedlen;	/* characters after src that are used */
8296     linenr_T	*lnump;		/* line number for :e command, or NULL */
8297     char_u	**errormsg;	/* pointer to error message */
8298     char_u	*srcstart;	/* beginning of valid memory for src */
8299 {
8300     int		i;
8301     char_u	*s;
8302     char_u	*result;
8303     char_u	*resultbuf = NULL;
8304     int		resultlen;
8305     buf_T	*buf;
8306     int		valid = VALID_HEAD + VALID_PATH;    /* assume valid result */
8307     int		spec_idx;
8308 #ifdef FEAT_MODIFY_FNAME
8309     int		skip_mod = FALSE;
8310 #endif
8311     static char *(spec_str[]) =
8312 	{
8313 		    "%",
8314 #define SPEC_PERC   0
8315 		    "#",
8316 #define SPEC_HASH   1
8317 		    "<cword>",		/* cursor word */
8318 #define SPEC_CWORD  2
8319 		    "<cWORD>",		/* cursor WORD */
8320 #define SPEC_CCWORD 3
8321 		    "<cfile>",		/* cursor path name */
8322 #define SPEC_CFILE  4
8323 		    "<sfile>",		/* ":so" file name */
8324 #define SPEC_SFILE  5
8325 #ifdef FEAT_AUTOCMD
8326 		    "<afile>",		/* autocommand file name */
8327 # define SPEC_AFILE 6
8328 		    "<abuf>",		/* autocommand buffer number */
8329 # define SPEC_ABUF  7
8330 		    "<amatch>",		/* autocommand match name */
8331 # define SPEC_AMATCH 8
8332 #endif
8333 #ifdef FEAT_CLIENTSERVER
8334 		    "<client>"
8335 # define SPEC_CLIENT 9
8336 #endif
8337 		};
8338 #define SPEC_COUNT  (sizeof(spec_str) / sizeof(char *))
8339 
8340 #if defined(FEAT_AUTOCMD) || defined(FEAT_CLIENTSERVER)
8341     char_u	strbuf[30];
8342 #endif
8343 
8344     *errormsg = NULL;
8345 
8346     /*
8347      * Check if there is something to do.
8348      */
8349     for (spec_idx = 0; spec_idx < SPEC_COUNT; ++spec_idx)
8350     {
8351 	*usedlen = (int)STRLEN(spec_str[spec_idx]);
8352 	if (STRNCMP(src, spec_str[spec_idx], *usedlen) == 0)
8353 	    break;
8354     }
8355     if (spec_idx == SPEC_COUNT)	    /* no match */
8356     {
8357 	*usedlen = 1;
8358 	return NULL;
8359     }
8360 
8361     /*
8362      * Skip when preceded with a backslash "\%" and "\#".
8363      * Note: In "\\%" the % is also not recognized!
8364      */
8365     if (src > srcstart && src[-1] == '\\')
8366     {
8367 	*usedlen = 0;
8368 	STRCPY(src - 1, src);		/* remove backslash */
8369 	return NULL;
8370     }
8371 
8372     /*
8373      * word or WORD under cursor
8374      */
8375     if (spec_idx == SPEC_CWORD || spec_idx == SPEC_CCWORD)
8376     {
8377 	resultlen = find_ident_under_cursor(&result, spec_idx == SPEC_CWORD ?
8378 				      (FIND_IDENT|FIND_STRING) : FIND_STRING);
8379 	if (resultlen == 0)
8380 	{
8381 	    *errormsg = (char_u *)"";
8382 	    return NULL;
8383 	}
8384     }
8385 
8386     /*
8387      * '#': Alternate file name
8388      * '%': Current file name
8389      *	    File name under the cursor
8390      *	    File name for autocommand
8391      *	and following modifiers
8392      */
8393     else
8394     {
8395 	switch (spec_idx)
8396 	{
8397 	case SPEC_PERC:		/* '%': current file */
8398 		if (curbuf->b_fname == NULL)
8399 		{
8400 		    result = (char_u *)"";
8401 		    valid = 0;	    /* Must have ":p:h" to be valid */
8402 		}
8403 		else
8404 #ifdef RISCOS
8405 		    /* Always use the full path for RISC OS if possible. */
8406 		    result = curbuf->b_ffname;
8407 		    if (result == NULL)
8408 			result = curbuf->b_fname;
8409 #else
8410 		    result = curbuf->b_fname;
8411 #endif
8412 		break;
8413 
8414 	case SPEC_HASH:		/* '#' or "#99": alternate file */
8415 		if (src[1] == '#')  /* "##": the argument list */
8416 		{
8417 		    result = arg_all();
8418 		    resultbuf = result;
8419 		    *usedlen = 2;
8420 #ifdef FEAT_MODIFY_FNAME
8421 		    skip_mod = TRUE;
8422 #endif
8423 		    break;
8424 		}
8425 		s = src + 1;
8426 		i = (int)getdigits(&s);
8427 		*usedlen = (int)(s - src); /* length of what we expand */
8428 
8429 		buf = buflist_findnr(i);
8430 		if (buf == NULL)
8431 		{
8432 		    *errormsg = (char_u *)_("E194: No alternate file name to substitute for '#'");
8433 		    return NULL;
8434 		}
8435 		if (lnump != NULL)
8436 		    *lnump = ECMD_LAST;
8437 		if (buf->b_fname == NULL)
8438 		{
8439 		    result = (char_u *)"";
8440 		    valid = 0;	    /* Must have ":p:h" to be valid */
8441 		}
8442 		else
8443 		    result = buf->b_fname;
8444 		break;
8445 
8446 #ifdef FEAT_SEARCHPATH
8447 	case SPEC_CFILE:	/* file name under cursor */
8448 		result = file_name_at_cursor(FNAME_MESS|FNAME_HYP, 1L);
8449 		if (result == NULL)
8450 		{
8451 		    *errormsg = (char_u *)"";
8452 		    return NULL;
8453 		}
8454 		resultbuf = result;	    /* remember allocated string */
8455 		break;
8456 #endif
8457 
8458 #ifdef FEAT_AUTOCMD
8459 	case SPEC_AFILE:	/* file name for autocommand */
8460 		result = autocmd_fname;
8461 		if (result == NULL)
8462 		{
8463 		    *errormsg = (char_u *)_("E495: no autocommand file name to substitute for \"<afile>\"");
8464 		    return NULL;
8465 		}
8466 		break;
8467 
8468 	case SPEC_ABUF:		/* buffer number for autocommand */
8469 		if (autocmd_bufnr <= 0)
8470 		{
8471 		    *errormsg = (char_u *)_("E496: no autocommand buffer number to substitute for \"<abuf>\"");
8472 		    return NULL;
8473 		}
8474 		sprintf((char *)strbuf, "%d", autocmd_bufnr);
8475 		result = strbuf;
8476 		break;
8477 
8478 	case SPEC_AMATCH:	/* match name for autocommand */
8479 		result = autocmd_match;
8480 		if (result == NULL)
8481 		{
8482 		    *errormsg = (char_u *)_("E497: no autocommand match name to substitute for \"<amatch>\"");
8483 		    return NULL;
8484 		}
8485 		break;
8486 
8487 #endif
8488 	case SPEC_SFILE:	/* file name for ":so" command */
8489 		result = sourcing_name;
8490 		if (result == NULL)
8491 		{
8492 		    *errormsg = (char_u *)_("E498: no :source file name to substitute for \"<sfile>\"");
8493 		    return NULL;
8494 		}
8495 		break;
8496 #if defined(FEAT_CLIENTSERVER)
8497 	case SPEC_CLIENT:	/* Source of last submitted input */
8498 		sprintf((char *)strbuf, "0x%x", (unsigned int)clientWindow);
8499 		result = strbuf;
8500 		break;
8501 #endif
8502 	}
8503 
8504 	resultlen = (int)STRLEN(result);	/* length of new string */
8505 	if (src[*usedlen] == '<')	/* remove the file name extension */
8506 	{
8507 	    ++*usedlen;
8508 #ifdef RISCOS
8509 	    if ((s = vim_strrchr(result, '/')) != NULL && s >= gettail(result))
8510 #else
8511 	    if ((s = vim_strrchr(result, '.')) != NULL && s >= gettail(result))
8512 #endif
8513 		resultlen = (int)(s - result);
8514 	}
8515 #ifdef FEAT_MODIFY_FNAME
8516 	else if (!skip_mod)
8517 	{
8518 	    valid |= modify_fname(src, usedlen, &result, &resultbuf,
8519 								  &resultlen);
8520 	    if (result == NULL)
8521 	    {
8522 		*errormsg = (char_u *)"";
8523 		return NULL;
8524 	    }
8525 	}
8526 #endif
8527     }
8528 
8529     if (resultlen == 0 || valid != VALID_HEAD + VALID_PATH)
8530     {
8531 	if (valid != VALID_HEAD + VALID_PATH)
8532 	    /* xgettext:no-c-format */
8533 	    *errormsg = (char_u *)_("E499: Empty file name for '%' or '#', only works with \":p:h\"");
8534 	else
8535 	    *errormsg = (char_u *)_("E500: Evaluates to an empty string");
8536 	result = NULL;
8537     }
8538     else
8539 	result = vim_strnsave(result, resultlen);
8540     vim_free(resultbuf);
8541     return result;
8542 }
8543 
8544 /*
8545  * Concatenate all files in the argument list, separated by spaces, and return
8546  * it in one allocated string.
8547  * Spaces and backslashes in the file names are escaped with a backslash.
8548  * Returns NULL when out of memory.
8549  */
8550     static char_u *
8551 arg_all()
8552 {
8553     int		len;
8554     int		idx;
8555     char_u	*retval = NULL;
8556     char_u	*p;
8557 
8558     /*
8559      * Do this loop two times:
8560      * first time: compute the total length
8561      * second time: concatenate the names
8562      */
8563     for (;;)
8564     {
8565 	len = 0;
8566 	for (idx = 0; idx < ARGCOUNT; ++idx)
8567 	{
8568 	    p = alist_name(&ARGLIST[idx]);
8569 	    if (p != NULL)
8570 	    {
8571 		if (len > 0)
8572 		{
8573 		    /* insert a space in between names */
8574 		    if (retval != NULL)
8575 			retval[len] = ' ';
8576 		    ++len;
8577 		}
8578 		for ( ; *p != NUL; ++p)
8579 		{
8580 		    if (*p == ' ' || *p == '\\')
8581 		    {
8582 			/* insert a backslash */
8583 			if (retval != NULL)
8584 			    retval[len] = '\\';
8585 			++len;
8586 		    }
8587 		    if (retval != NULL)
8588 			retval[len] = *p;
8589 		    ++len;
8590 		}
8591 	    }
8592 	}
8593 
8594 	/* second time: break here */
8595 	if (retval != NULL)
8596 	{
8597 	    retval[len] = NUL;
8598 	    break;
8599 	}
8600 
8601 	/* allocate memory */
8602 	retval = alloc(len + 1);
8603 	if (retval == NULL)
8604 	    break;
8605     }
8606 
8607     return retval;
8608 }
8609 
8610 #if defined(FEAT_AUTOCMD) || defined(PROTO)
8611 /*
8612  * Expand the <sfile> string in "arg".
8613  *
8614  * Returns an allocated string, or NULL for any error.
8615  */
8616     char_u *
8617 expand_sfile(arg)
8618     char_u	*arg;
8619 {
8620     char_u	*errormsg;
8621     int		len;
8622     char_u	*result;
8623     char_u	*newres;
8624     char_u	*repl;
8625     int		srclen;
8626     char_u	*p;
8627 
8628     result = vim_strsave(arg);
8629     if (result == NULL)
8630 	return NULL;
8631 
8632     for (p = result; *p; )
8633     {
8634 	if (STRNCMP(p, "<sfile>", 7) != 0)
8635 	    ++p;
8636 	else
8637 	{
8638 	    /* replace "<sfile>" with the sourced file name, and do ":" stuff */
8639 	    repl = eval_vars(p, &srclen, NULL, &errormsg, result);
8640 	    if (errormsg != NULL)
8641 	    {
8642 		if (*errormsg)
8643 		    emsg(errormsg);
8644 		vim_free(result);
8645 		return NULL;
8646 	    }
8647 	    if (repl == NULL)		/* no match (cannot happen) */
8648 	    {
8649 		p += srclen;
8650 		continue;
8651 	    }
8652 	    len = (int)STRLEN(result) - srclen + (int)STRLEN(repl) + 1;
8653 	    newres = alloc(len);
8654 	    if (newres == NULL)
8655 	    {
8656 		vim_free(repl);
8657 		vim_free(result);
8658 		return NULL;
8659 	    }
8660 	    mch_memmove(newres, result, (size_t)(p - result));
8661 	    STRCPY(newres + (p - result), repl);
8662 	    len = (int)STRLEN(newres);
8663 	    STRCAT(newres, p + srclen);
8664 	    vim_free(repl);
8665 	    vim_free(result);
8666 	    result = newres;
8667 	    p = newres + len;		/* continue after the match */
8668 	}
8669     }
8670 
8671     return result;
8672 }
8673 #endif
8674 
8675 #ifdef FEAT_SESSION
8676 static int ses_winsizes __ARGS((FILE *fd, int restore_size));
8677 static int ses_win_rec __ARGS((FILE *fd, frame_T *fr));
8678 static frame_T *ses_skipframe __ARGS((frame_T *fr));
8679 static int ses_do_frame __ARGS((frame_T *fr));
8680 static int ses_do_win __ARGS((win_T *wp));
8681 static int ses_arglist __ARGS((FILE *fd, char *cmd, garray_T *gap, int fullname, unsigned *flagp));
8682 static int ses_put_fname __ARGS((FILE *fd, char_u *name, unsigned *flagp));
8683 static int ses_fname __ARGS((FILE *fd, buf_T *buf, unsigned *flagp));
8684 
8685 /*
8686  * Write openfile commands for the current buffers to an .exrc file.
8687  * Return FAIL on error, OK otherwise.
8688  */
8689     static int
8690 makeopens(fd, dirnow)
8691     FILE	*fd;
8692     char_u	*dirnow;	/* Current directory name */
8693 {
8694     buf_T	*buf;
8695     int		only_save_windows = TRUE;
8696     int		nr;
8697     int		cnr = 1;
8698     int		restore_size = TRUE;
8699     win_T	*wp;
8700     char_u	*sname;
8701     win_T	*edited_win = NULL;
8702 
8703     if (ssop_flags & SSOP_BUFFERS)
8704 	only_save_windows = FALSE;		/* Save ALL buffers */
8705 
8706     /*
8707      * Begin by setting the this_session variable, and then other
8708      * sessionable variables.
8709      */
8710 #ifdef FEAT_EVAL
8711     if (put_line(fd, "let v:this_session=expand(\"<sfile>:p\")") == FAIL)
8712 	return FAIL;
8713     if (ssop_flags & SSOP_GLOBALS)
8714 	if (store_session_globals(fd) == FAIL)
8715 	    return FAIL;
8716 #endif
8717 
8718     /*
8719      * Close all windows but one.
8720      */
8721     if (put_line(fd, "silent only") == FAIL)
8722 	return FAIL;
8723 
8724     /*
8725      * Now a :cd command to the session directory or the current directory
8726      */
8727     if (ssop_flags & SSOP_SESDIR)
8728     {
8729 	if (put_line(fd, "exe \"cd \" . expand(\"<sfile>:p:h\")") == FAIL)
8730 	    return FAIL;
8731     }
8732     else if (ssop_flags & SSOP_CURDIR)
8733     {
8734 	sname = home_replace_save(NULL, globaldir != NULL ? globaldir : dirnow);
8735 	if (sname == NULL
8736 		|| fprintf(fd, "cd %s", sname) < 0 || put_eol(fd) == FAIL)
8737 	    return FAIL;
8738 	vim_free(sname);
8739     }
8740 
8741     /*
8742      * Now save the current files, current buffer first.
8743      */
8744     if (put_line(fd, "set shortmess=aoO") == FAIL)
8745 	return FAIL;
8746 
8747     /* Now put the other buffers into the buffer list */
8748     for (buf = firstbuf; buf != NULL; buf = buf->b_next)
8749     {
8750 	if (!(only_save_windows && buf->b_nwindows == 0)
8751 		&& !(buf->b_help && !(ssop_flags & SSOP_HELP))
8752 		&& buf->b_fname != NULL
8753 		&& buf->b_p_bl)
8754 	{
8755 	    if (fprintf(fd, "badd +%ld ", buf->b_wininfo == NULL ? 1L
8756 					   : buf->b_wininfo->wi_fpos.lnum) < 0
8757 		    || ses_fname(fd, buf, &ssop_flags) == FAIL)
8758 		return FAIL;
8759 	}
8760     }
8761 
8762     /* the global argument list */
8763     if (ses_arglist(fd, "args", &global_alist.al_ga,
8764 			    !(ssop_flags & SSOP_CURDIR), &ssop_flags) == FAIL)
8765 	return FAIL;
8766 
8767     if (ssop_flags & SSOP_RESIZE)
8768     {
8769 	/* Note: after the restore we still check it worked!*/
8770 	if (fprintf(fd, "set lines=%ld columns=%ld" , Rows, Columns) < 0
8771 		|| put_eol(fd) == FAIL)
8772 	    return FAIL;
8773     }
8774 
8775 #ifdef FEAT_GUI
8776     if (gui.in_use && (ssop_flags & SSOP_WINPOS))
8777     {
8778 	int	x, y;
8779 
8780 	if (gui_mch_get_winpos(&x, &y) == OK)
8781 	{
8782 	    /* Note: after the restore we still check it worked!*/
8783 	    if (fprintf(fd, "winpos %d %d", x, y) < 0 || put_eol(fd) == FAIL)
8784 		return FAIL;
8785 	}
8786     }
8787 #endif
8788 
8789     /*
8790      * Before creating the window layout, try loading one file.  If this is
8791      * aborted we don't end up with a number of useless windows.
8792      * This may have side effects! (e.g., compressed or network file).
8793      */
8794     for (wp = firstwin; wp != NULL; wp = wp->w_next)
8795     {
8796 	if (ses_do_win(wp)
8797 		&& wp->w_buffer->b_ffname != NULL
8798 		&& !wp->w_buffer->b_help
8799 #ifdef FEAT_QUICKFIX
8800 		&& !bt_nofile(wp->w_buffer)
8801 #endif
8802 		)
8803 	{
8804 	    if (fputs("edit ", fd) < 0
8805 		    || ses_fname(fd, wp->w_buffer, &ssop_flags) == FAIL)
8806 		return FAIL;
8807 	    if (!wp->w_arg_idx_invalid)
8808 		edited_win = wp;
8809 	    break;
8810 	}
8811     }
8812 
8813     /*
8814      * Save current window layout.
8815      */
8816     if (put_line(fd, "set splitbelow splitright") == FAIL)
8817 	return FAIL;
8818     if (ses_win_rec(fd, topframe) == FAIL)
8819 	return FAIL;
8820     if (!p_sb && put_line(fd, "set nosplitbelow") == FAIL)
8821 	return FAIL;
8822     if (!p_spr && put_line(fd, "set nosplitright") == FAIL)
8823 	return FAIL;
8824 
8825     /*
8826      * Check if window sizes can be restored (no windows omitted).
8827      * Remember the window number of the current window after restoring.
8828      */
8829     nr = 0;
8830     for (wp = firstwin; wp != NULL; wp = W_NEXT(wp))
8831     {
8832 	if (ses_do_win(wp))
8833 	    ++nr;
8834 	else
8835 	    restore_size = FALSE;
8836 	if (curwin == wp)
8837 	    cnr = nr;
8838     }
8839 
8840     /* Go to the first window. */
8841     if (put_line(fd, "wincmd t") == FAIL)
8842 	return FAIL;
8843 
8844     /*
8845      * If more than one window, see if sizes can be restored.
8846      * First set 'winheight' and 'winwidth' to 1 to avoid the windows being
8847      * resized when moving between windows.
8848      * Do this before restoring the view, so that the topline and the cursor
8849      * can be set.  This is done again below.
8850      */
8851     if (put_line(fd, "set winheight=1 winwidth=1") == FAIL)
8852 	return FAIL;
8853     if (nr > 1 && ses_winsizes(fd, restore_size) == FAIL)
8854 	return FAIL;
8855 
8856     /*
8857      * Restore the view of the window (options, file, cursor, etc.).
8858      */
8859     for (wp = firstwin; wp != NULL; wp = wp->w_next)
8860     {
8861 	if (!ses_do_win(wp))
8862 	    continue;
8863 	if (put_view(fd, wp, wp != edited_win, &ssop_flags) == FAIL)
8864 	    return FAIL;
8865 	if (nr > 1 && put_line(fd, "wincmd w") == FAIL)
8866 	    return FAIL;
8867     }
8868 
8869     /*
8870      * Restore cursor to the current window if it's not the first one.
8871      */
8872     if (cnr > 1 && (fprintf(fd, "%dwincmd w", cnr) < 0 || put_eol(fd) == FAIL))
8873 	return FAIL;
8874 
8875     /*
8876      * Restore window sizes again after jumping around in windows, because the
8877      * current window has a minimum size while others may not.
8878      */
8879     if (nr > 1 && ses_winsizes(fd, restore_size) == FAIL)
8880 	return FAIL;
8881 
8882     /* Re-apply 'winheight', 'winwidth' and 'shortmess'. */
8883     if (fprintf(fd, "set winheight=%ld winwidth=%ld shortmess=%s",
8884 			       p_wh, p_wiw, p_shm) < 0 || put_eol(fd) == FAIL)
8885 	return FAIL;
8886 
8887     /*
8888      * Lastly, execute the x.vim file if it exists.
8889      */
8890     if (put_line(fd, "let s:sx = expand(\"<sfile>:p:r\").\"x.vim\"") == FAIL
8891 	    || put_line(fd, "if file_readable(s:sx)") == FAIL
8892 	    || put_line(fd, "  exe \"source \" . s:sx") == FAIL
8893 	    || put_line(fd, "endif") == FAIL)
8894 	return FAIL;
8895 
8896     return OK;
8897 }
8898 
8899     static int
8900 ses_winsizes(fd, restore_size)
8901     FILE	*fd;
8902     int		restore_size;
8903 {
8904     int		n = 0;
8905     win_T	*wp;
8906 
8907     if (restore_size && (ssop_flags & SSOP_WINSIZE))
8908     {
8909 	for (wp = firstwin; wp != NULL; wp = wp->w_next)
8910 	{
8911 	    if (!ses_do_win(wp))
8912 		continue;
8913 	    ++n;
8914 
8915 	    /* restore height when not full height */
8916 	    if (wp->w_height + wp->w_status_height < topframe->fr_height
8917 		    && (fprintf(fd,
8918 			  "exe '%dresize ' . ((&lines * %ld + %ld) / %ld)",
8919 			    n, (long)wp->w_height, Rows / 2, Rows) < 0
8920 						  || put_eol(fd) == FAIL))
8921 		return FAIL;
8922 
8923 	    /* restore width when not full width */
8924 	    if (wp->w_width < Columns && (fprintf(fd,
8925 		   "exe 'vert %dresize ' . ((&columns * %ld + %ld) / %ld)",
8926 			    n, (long)wp->w_width, Columns / 2, Columns) < 0
8927 						  || put_eol(fd) == FAIL))
8928 		return FAIL;
8929 	}
8930     }
8931     else
8932     {
8933 	/* Just equalise window sizes */
8934 	if (put_line(fd, "wincmd =") == FAIL)
8935 	    return FAIL;
8936     }
8937     return OK;
8938 }
8939 
8940 /*
8941  * Write commands to "fd" to recursively create windows for frame "fr",
8942  * horizontally and vertically split.
8943  * After the commands the last window in the frame is the current window.
8944  * Returns FAIL when writing the commands to "fd" fails.
8945  */
8946     static int
8947 ses_win_rec(fd, fr)
8948     FILE	*fd;
8949     frame_T	*fr;
8950 {
8951     frame_T	*frc;
8952     int		count = 0;
8953 
8954     if (fr->fr_layout != FR_LEAF)
8955     {
8956 	/* Find first frame that's not skipped and then create a window for
8957 	 * each following one (first frame is already there). */
8958 	frc = ses_skipframe(fr->fr_child);
8959 	if (frc != NULL)
8960 	    while ((frc = ses_skipframe(frc->fr_next)) != NULL)
8961 	    {
8962 		/* Make window as big as possible so that we have lots of room
8963 		 * to split. */
8964 		if (put_line(fd, "wincmd _ | wincmd |") == FAIL
8965 			|| put_line(fd, fr->fr_layout == FR_COL
8966 						? "split" : "vsplit") == FAIL)
8967 		    return FAIL;
8968 		++count;
8969 	    }
8970 
8971 	/* Go back to the first window. */
8972 	if (count > 0 && (fprintf(fd, fr->fr_layout == FR_COL
8973 			? "%dwincmd k" : "%dwincmd h", count) < 0
8974 						      || put_eol(fd) == FAIL))
8975 	    return FAIL;
8976 
8977 	/* Recursively create frames/windows in each window of this column or
8978 	 * row. */
8979 	frc = ses_skipframe(fr->fr_child);
8980 	while (frc != NULL)
8981 	{
8982 	    ses_win_rec(fd, frc);
8983 	    frc = ses_skipframe(frc->fr_next);
8984 	    /* Go to next window. */
8985 	    if (frc != NULL && put_line(fd, "wincmd w") == FAIL)
8986 		return FAIL;
8987 	}
8988     }
8989     return OK;
8990 }
8991 
8992 /*
8993  * Skip frames that don't contain windows we want to save in the Session.
8994  * Returns NULL when there none.
8995  */
8996     static frame_T *
8997 ses_skipframe(fr)
8998     frame_T	*fr;
8999 {
9000     frame_T	*frc;
9001 
9002     for (frc = fr; frc != NULL; frc = frc->fr_next)
9003 	if (ses_do_frame(frc))
9004 	    break;
9005     return frc;
9006 }
9007 
9008 /*
9009  * Return TRUE if frame "fr" has a window somewhere that we want to save in
9010  * the Session.
9011  */
9012     static int
9013 ses_do_frame(fr)
9014     frame_T	*fr;
9015 {
9016     frame_T	*frc;
9017 
9018     if (fr->fr_layout == FR_LEAF)
9019 	return ses_do_win(fr->fr_win);
9020     for (frc = fr->fr_child; frc != NULL; frc = frc->fr_next)
9021 	if (ses_do_frame(frc))
9022 	    return TRUE;
9023     return FALSE;
9024 }
9025 
9026 /*
9027  * Return non-zero if window "wp" is to be stored in the Session.
9028  */
9029     static int
9030 ses_do_win(wp)
9031     win_T	*wp;
9032 {
9033     if (wp->w_buffer->b_fname == NULL
9034 #ifdef FEAT_QUICKFIX
9035 	    /* When 'buftype' is "nofile" can't restore the window contents. */
9036 	    || bt_nofile(wp->w_buffer)
9037 #endif
9038        )
9039 	return (ssop_flags & SSOP_BLANK);
9040     if (wp->w_buffer->b_help)
9041 	return (ssop_flags & SSOP_HELP);
9042     return TRUE;
9043 }
9044 
9045 /*
9046  * Write commands to "fd" to restore the view of a window.
9047  * Caller must make sure 'scrolloff' is zero.
9048  */
9049     static int
9050 put_view(fd, wp, add_edit, flagp)
9051     FILE	*fd;
9052     win_T	*wp;
9053     int		add_edit;	/* add ":edit" command to view */
9054     unsigned	*flagp;		/* vop_flags or ssop_flags */
9055 {
9056     win_T	*save_curwin;
9057     int		f;
9058     int		do_cursor;
9059 
9060     /* Always restore cursor position for ":mksession".  For ":mkview" only
9061      * when 'viewoptions' contains "cursor". */
9062     do_cursor = (flagp == &ssop_flags || *flagp & SSOP_CURSOR);
9063 
9064     /*
9065      * Local argument list.
9066      */
9067     if (wp->w_alist == &global_alist)
9068     {
9069 	if (put_line(fd, "argglobal") == FAIL)
9070 	    return FAIL;
9071     }
9072     else
9073     {
9074 	if (ses_arglist(fd, "arglocal", &wp->w_alist->al_ga,
9075 			flagp == &vop_flags
9076 			|| !(*flagp & SSOP_CURDIR)
9077 			|| wp->w_localdir != NULL, flagp) == FAIL)
9078 	    return FAIL;
9079     }
9080 
9081     /* Only when part of a session: restore the argument index. */
9082     if (wp->w_arg_idx != 0 && flagp == &ssop_flags)
9083     {
9084 	if (fprintf(fd, "%ldnext", (long)wp->w_arg_idx) < 0
9085 		|| put_eol(fd) == FAIL)
9086 	    return FAIL;
9087     }
9088 
9089     /* Edit the file.  Skip this when ":next" already did it. */
9090     if (add_edit && (wp->w_arg_idx == 0 || flagp != &ssop_flags
9091 						    || wp->w_arg_idx_invalid))
9092     {
9093 	/*
9094 	 * Load the file.
9095 	 */
9096 	if (wp->w_buffer->b_ffname != NULL
9097 #ifdef FEAT_QUICKFIX
9098 		&& !bt_nofile(wp->w_buffer)
9099 #endif
9100 		)
9101 	{
9102 	    /*
9103 	     * Editing a file in this buffer: use ":edit file".
9104 	     * This may have side effects! (e.g., compressed or network file).
9105 	     */
9106 	    if (fputs("edit ", fd) < 0
9107 		    || ses_fname(fd, wp->w_buffer, flagp) == FAIL)
9108 		return FAIL;
9109 	}
9110 	else
9111 	{
9112 	    /* No file in this buffer, just make it empty. */
9113 	    if (put_line(fd, "enew") == FAIL)
9114 		return FAIL;
9115 #ifdef FEAT_QUICKFIX
9116 	    if (wp->w_buffer->b_ffname != NULL)
9117 	    {
9118 		/* The buffer does have a name, but it's not a file name. */
9119 		if (fputs("file ", fd) < 0
9120 			|| ses_fname(fd, wp->w_buffer, flagp) == FAIL)
9121 		    return FAIL;
9122 	    }
9123 #endif
9124 	    do_cursor = FALSE;
9125 	}
9126     }
9127 
9128     /*
9129      * Local mappings and abbreviations.
9130      */
9131     if ((*flagp & (SSOP_OPTIONS | SSOP_LOCALOPTIONS))
9132 					 && makemap(fd, wp->w_buffer) == FAIL)
9133 	return FAIL;
9134 
9135     /*
9136      * Local options.  Need to go to the window temporarily.
9137      * Store only local values when using ":mkview" and when ":mksession" is
9138      * used and 'sessionoptions' doesn't include "options".
9139      * Some folding options are always stored when "folds" is included,
9140      * otherwise the folds would not be restored correctly.
9141      */
9142     save_curwin = curwin;
9143     curwin = wp;
9144     curbuf = curwin->w_buffer;
9145     if (*flagp & (SSOP_OPTIONS | SSOP_LOCALOPTIONS))
9146 	f = makeset(fd, OPT_LOCAL,
9147 			     flagp == &vop_flags || !(*flagp & SSOP_OPTIONS));
9148 #ifdef FEAT_FOLDING
9149     else if (*flagp & SSOP_FOLDS)
9150 	f = makefoldset(fd);
9151 #endif
9152     else
9153 	f = OK;
9154     curwin = save_curwin;
9155     curbuf = curwin->w_buffer;
9156     if (f == FAIL)
9157 	return FAIL;
9158 
9159 #ifdef FEAT_FOLDING
9160     /*
9161      * Save Folds when 'buftype' is empty and for help files.
9162      */
9163     if ((*flagp & SSOP_FOLDS)
9164 	    && wp->w_buffer->b_ffname != NULL
9165 	    && (*wp->w_buffer->b_p_bt == NUL || wp->w_buffer->b_help))
9166     {
9167 	if (put_folds(fd, wp) == FAIL)
9168 	    return FAIL;
9169     }
9170 #endif
9171 
9172     /*
9173      * Set the cursor after creating folds, since that moves the cursor.
9174      */
9175     if (do_cursor)
9176     {
9177 
9178 	/* Restore the cursor line in the file and relatively in the
9179 	 * window.  Don't use "G", it changes the jumplist. */
9180 	if (fprintf(fd, "let s:l = %ld - ((%ld * winheight(0) + %ld) / %ld)",
9181 		    (long)wp->w_cursor.lnum,
9182 		    (long)(wp->w_cursor.lnum - wp->w_topline),
9183 		    (long)wp->w_height / 2, (long)wp->w_height) < 0
9184 		|| put_eol(fd) == FAIL
9185 		|| put_line(fd, "if s:l < 1 | let s:l = 1 | endif") == FAIL
9186 		|| put_line(fd, "exe s:l") == FAIL
9187 		|| put_line(fd, "normal! zt") == FAIL
9188 		|| fprintf(fd, "%ld", (long)wp->w_cursor.lnum) < 0
9189 		|| put_eol(fd) == FAIL)
9190 	    return FAIL;
9191 	/* Restore the cursor column and left offset when not wrapping. */
9192 	if (wp->w_cursor.col == 0)
9193 	{
9194 	    if (put_line(fd, "normal! 0") == FAIL)
9195 		return FAIL;
9196 	}
9197 	else
9198 	{
9199 	    if (!wp->w_p_wrap && wp->w_leftcol > 0 && wp->w_width > 0)
9200 	    {
9201 		if (fprintf(fd,
9202 			  "let s:c = %ld - ((%ld * winwidth(0) + %ld) / %ld)",
9203 			    (long)wp->w_cursor.col,
9204 			    (long)(wp->w_cursor.col - wp->w_leftcol),
9205 			    (long)wp->w_width / 2, (long)wp->w_width) < 0
9206 			|| put_eol(fd) == FAIL
9207 			|| put_line(fd, "if s:c > 0") == FAIL
9208 			|| fprintf(fd,
9209 			    "  exe 'normal! 0' . s:c . 'lzs' . (%ld - s:c) . 'l'",
9210 			    (long)wp->w_cursor.col) < 0
9211 			|| put_eol(fd) == FAIL
9212 			|| put_line(fd, "else") == FAIL
9213 			|| fprintf(fd, "  normal! 0%dl", wp->w_cursor.col) < 0
9214 			|| put_eol(fd) == FAIL
9215 			|| put_line(fd, "endif") == FAIL)
9216 		    return FAIL;
9217 	    }
9218 	    else
9219 	    {
9220 		if (fprintf(fd, "normal! 0%dl", wp->w_cursor.col) < 0
9221 			|| put_eol(fd) == FAIL)
9222 		    return FAIL;
9223 	    }
9224 	}
9225     }
9226 
9227     /*
9228      * Local directory.
9229      */
9230     if (wp->w_localdir != NULL)
9231     {
9232 	if (fputs("lcd ", fd) < 0
9233 		|| ses_put_fname(fd, wp->w_localdir, flagp) == FAIL
9234 		|| put_eol(fd) == FAIL)
9235 	    return FAIL;
9236     }
9237 
9238     return OK;
9239 }
9240 
9241 /*
9242  * Write an argument list to the session file.
9243  * Returns FAIL if writing fails.
9244  */
9245     static int
9246 ses_arglist(fd, cmd, gap, fullname, flagp)
9247     FILE	*fd;
9248     char	*cmd;
9249     garray_T	*gap;
9250     int		fullname;	/* TRUE: use full path name */
9251     unsigned	*flagp;
9252 {
9253     int		i;
9254     char_u	buf[MAXPATHL];
9255     char_u	*s;
9256 
9257     if (gap->ga_len == 0)
9258 	return put_line(fd, "silent! argdel *");
9259     if (fputs(cmd, fd) < 0)
9260 	return FAIL;
9261     for (i = 0; i < gap->ga_len; ++i)
9262     {
9263 	/* NULL file names are skipped (only happens when out of memory). */
9264 	s = alist_name(&((aentry_T *)gap->ga_data)[i]);
9265 	if (s != NULL)
9266 	{
9267 	    if (fullname)
9268 	    {
9269 		(void)vim_FullName(s, buf, MAXPATHL, FALSE);
9270 		s = buf;
9271 	    }
9272 	    if (fputs(" ", fd) < 0 || ses_put_fname(fd, s, flagp) == FAIL)
9273 		return FAIL;
9274 	}
9275     }
9276     return put_eol(fd);
9277 }
9278 
9279 /*
9280  * Write a buffer name to the session file.
9281  * Also ends the line.
9282  * Returns FAIL if writing fails.
9283  */
9284     static int
9285 ses_fname(fd, buf, flagp)
9286     FILE	*fd;
9287     buf_T	*buf;
9288     unsigned	*flagp;
9289 {
9290     char_u	*name;
9291 
9292     /* Use the short file name if the current directory is known at the time
9293      * the session file will be sourced.  Don't do this for ":mkview", we
9294      * don't know the current directory. */
9295     if (buf->b_sfname != NULL
9296 	    && flagp == &ssop_flags
9297 	    && (ssop_flags & (SSOP_CURDIR | SSOP_SESDIR)))
9298 	name = buf->b_sfname;
9299     else
9300 	name = buf->b_ffname;
9301     if (ses_put_fname(fd, name, flagp) == FAIL || put_eol(fd) == FAIL)
9302 	return FAIL;
9303     return OK;
9304 }
9305 
9306 /*
9307  * Write a file name to the session file.
9308  * Takes care of the "slash" option in 'sessionoptions' and escapes special
9309  * characters.
9310  * Returns FAIL if writing fails.
9311  */
9312     static int
9313 ses_put_fname(fd, name, flagp)
9314     FILE	*fd;
9315     char_u	*name;
9316     unsigned	*flagp;
9317 {
9318     char_u	*sname;
9319     int		retval = OK;
9320     int		c;
9321 
9322     sname = home_replace_save(NULL, name);
9323     if (sname != NULL)
9324 	name = sname;
9325     while (*name != NUL)
9326     {
9327 #ifdef FEAT_MBYTE
9328 	{
9329 	    int l;
9330 
9331 	    if (has_mbyte && (l = (*mb_ptr2len_check)(name)) > 1)
9332 	    {
9333 		/* copy a multibyte char */
9334 		while (--l >= 0)
9335 		{
9336 		    if (putc(*name, fd) != *name)
9337 			retval = FAIL;
9338 		    ++name;
9339 		}
9340 		continue;
9341 	    }
9342 	}
9343 #endif
9344 	c = *name++;
9345 	if (c == '\\' && (*flagp & SSOP_SLASH))
9346 	    /* change a backslash to a forward slash */
9347 	    c = '/';
9348 	else if ((vim_strchr(escape_chars, c) != NULL
9349 #ifdef BACKSLASH_IN_FILENAME
9350 		    && c != '\\'
9351 #endif
9352 		 ) || c == '#' || c == '%')
9353 	{
9354 	    /* escape a special character with a backslash */
9355 	    if (putc('\\', fd) != '\\')
9356 		retval = FAIL;
9357 	}
9358 	if (putc(c, fd) != c)
9359 	    retval = FAIL;
9360     }
9361     vim_free(sname);
9362     return retval;
9363 }
9364 
9365 /*
9366  * ":loadview [nr]"
9367  */
9368     static void
9369 ex_loadview(eap)
9370     exarg_T	*eap;
9371 {
9372     char_u	*fname;
9373 
9374     fname = get_view_file(*eap->arg);
9375     if (fname != NULL)
9376     {
9377 	do_source(fname, FALSE, FALSE);
9378 	vim_free(fname);
9379     }
9380 }
9381 
9382 /*
9383  * Get the name of the view file for the current buffer.
9384  */
9385     static char_u *
9386 get_view_file(c)
9387     int		c;
9388 {
9389     int		len = 0;
9390     char_u	*p, *s;
9391     char_u	*retval;
9392     char_u	*sname;
9393 
9394     if (curbuf->b_ffname == NULL)
9395     {
9396 	EMSG(_(e_noname));
9397 	return NULL;
9398     }
9399     sname = home_replace_save(NULL, curbuf->b_ffname);
9400     if (sname == NULL)
9401 	return NULL;
9402 
9403     /*
9404      * We want a file name without separators, because we're not going to make
9405      * a directory.
9406      * "normal" path separator	-> "=+"
9407      * "="			-> "=="
9408      * ":" path separator	-> "=-"
9409      */
9410     for (p = sname; *p; ++p)
9411 	if (*p == '=' || vim_ispathsep(*p))
9412 	    ++len;
9413     retval = alloc((unsigned)(STRLEN(sname) + len + STRLEN(p_vdir) + 9));
9414     if (retval != NULL)
9415     {
9416 	STRCPY(retval, p_vdir);
9417 	add_pathsep(retval);
9418 	s = retval + STRLEN(retval);
9419 	for (p = sname; *p; ++p)
9420 	{
9421 	    if (*p == '=')
9422 	    {
9423 		*s++ = '=';
9424 		*s++ = '=';
9425 	    }
9426 	    else if (vim_ispathsep(*p))
9427 	    {
9428 		*s++ = '=';
9429 #ifdef MACOS_CLASSIC /* TODO: Is it also needed for MACOS_X? (Dany) */
9430 		*s++ = '+';
9431 #else
9432 # if defined(BACKSLASH_IN_FILENAME) || defined(AMIGA) || defined(RISCOS) \
9433 	|| defined(VMS)
9434 		if (*p == ':')
9435 		    *s++ = '-';
9436 		else
9437 # endif
9438 		    *s++ = '+';
9439 #endif
9440 	    }
9441 	    else
9442 		*s++ = *p;
9443 	}
9444 	*s++ = '=';
9445 	*s++ = c;
9446 	STRCPY(s, ".vim");
9447     }
9448 
9449     vim_free(sname);
9450     return retval;
9451 }
9452 
9453 #endif /* FEAT_SESSION */
9454 
9455 /*
9456  * Write end-of-line character(s) for ":mkexrc", ":mkvimrc" and ":mksession".
9457  * Return FAIL for a write error.
9458  */
9459     int
9460 put_eol(fd)
9461     FILE	*fd;
9462 {
9463     if (
9464 #ifdef USE_CRNL
9465 	    (
9466 # ifdef MKSESSION_NL
9467 	     !mksession_nl &&
9468 # endif
9469 	     (putc('\r', fd) < 0)) ||
9470 #endif
9471 	    (putc('\n', fd) < 0))
9472 	return FAIL;
9473     return OK;
9474 }
9475 
9476 /*
9477  * Write a line to "fd".
9478  * Return FAIL for a write error.
9479  */
9480     int
9481 put_line(fd, s)
9482     FILE	*fd;
9483     char	*s;
9484 {
9485     if (fputs(s, fd) < 0 || put_eol(fd) == FAIL)
9486 	return FAIL;
9487     return OK;
9488 }
9489 
9490 #ifdef FEAT_VIMINFO
9491 /*
9492  * ":rviminfo" and ":wviminfo".
9493  */
9494     static void
9495 ex_viminfo(eap)
9496     exarg_T	*eap;
9497 {
9498     char_u	*save_viminfo;
9499 
9500     save_viminfo = p_viminfo;
9501     if (*p_viminfo == NUL)
9502 	p_viminfo = (char_u *)"'100";
9503     if (eap->cmdidx == CMD_rviminfo)
9504     {
9505 	if (read_viminfo(eap->arg, TRUE, TRUE, eap->forceit) == FAIL)
9506 	    EMSG(_("E195: Cannot open viminfo file for reading"));
9507     }
9508     else
9509 	write_viminfo(eap->arg, eap->forceit);
9510     p_viminfo = save_viminfo;
9511 }
9512 #endif
9513 
9514 #if defined(FEAT_GUI_DIALOG) || defined(FEAT_CON_DIALOG) || defined(PROTO)
9515     void
9516 dialog_msg(buff, format, fname)
9517     char_u	*buff;
9518     char	*format;
9519     char_u	*fname;
9520 {
9521     int		len;
9522 
9523     if (fname == NULL)
9524 	fname = (char_u *)_("Untitled");
9525     len = (int)STRLEN(format) + (int)STRLEN(fname);
9526     if (len >= IOSIZE)
9527 	sprintf((char *)buff, format, (int)(IOSIZE - STRLEN(format)), fname);
9528     else
9529 	sprintf((char *)buff, format, (int)STRLEN(fname), fname);
9530 }
9531 #endif
9532 
9533 /*
9534  * ":behave {mswin,xterm}"
9535  */
9536     static void
9537 ex_behave(eap)
9538     exarg_T	*eap;
9539 {
9540     if (STRCMP(eap->arg, "mswin") == 0)
9541     {
9542 	set_option_value((char_u *)"selection", 0L, (char_u *)"exclusive", 0);
9543 	set_option_value((char_u *)"selectmode", 0L, (char_u *)"mouse,key", 0);
9544 	set_option_value((char_u *)"mousemodel", 0L, (char_u *)"popup", 0);
9545 	set_option_value((char_u *)"keymodel", 0L,
9546 					     (char_u *)"startsel,stopsel", 0);
9547     }
9548     else if (STRCMP(eap->arg, "xterm") == 0)
9549     {
9550 	set_option_value((char_u *)"selection", 0L, (char_u *)"inclusive", 0);
9551 	set_option_value((char_u *)"selectmode", 0L, (char_u *)"", 0);
9552 	set_option_value((char_u *)"mousemodel", 0L, (char_u *)"extend", 0);
9553 	set_option_value((char_u *)"keymodel", 0L, (char_u *)"", 0);
9554     }
9555     else
9556 	EMSG2(_(e_invarg2), eap->arg);
9557 }
9558 
9559 #ifdef FEAT_AUTOCMD
9560 static int filetype_detect = FALSE;
9561 static int filetype_plugin = FALSE;
9562 static int filetype_indent = FALSE;
9563 
9564 /*
9565  * ":filetype [plugin] [indent] {on,off,detect}"
9566  * on: Load the filetype.vim file to install autocommands for file types.
9567  * off: Load the ftoff.vim file to remove all autocommands for file types.
9568  * plugin on: load filetype.vim and ftplugin.vim
9569  * plugin off: load ftplugof.vim
9570  * indent on: load filetype.vim and indent.vim
9571  * indent off: load indoff.vim
9572  */
9573     static void
9574 ex_filetype(eap)
9575     exarg_T	*eap;
9576 {
9577     char_u	*arg = eap->arg;
9578     int		plugin = FALSE;
9579     int		indent = FALSE;
9580 
9581     if (*eap->arg == NUL)
9582     {
9583 	/* Print current status. */
9584 	smsg((char_u *)"filetype detection:%s  plugin:%s  indent:%s",
9585 		filetype_detect ? "ON" : "OFF",
9586 		filetype_plugin ? (filetype_detect ? "ON" : "(on)") : "OFF",
9587 		filetype_indent ? (filetype_detect ? "ON" : "(on)") : "OFF");
9588 	return;
9589     }
9590 
9591     /* Accept "plugin" and "indent" in any order. */
9592     for (;;)
9593     {
9594 	if (STRNCMP(arg, "plugin", 6) == 0)
9595 	{
9596 	    plugin = TRUE;
9597 	    arg = skipwhite(arg + 6);
9598 	    continue;
9599 	}
9600 	if (STRNCMP(arg, "indent", 6) == 0)
9601 	{
9602 	    indent = TRUE;
9603 	    arg = skipwhite(arg + 6);
9604 	    continue;
9605 	}
9606 	break;
9607     }
9608     if (STRCMP(arg, "on") == 0 || STRCMP(arg, "detect") == 0)
9609     {
9610 	if (*arg == 'o' || !filetype_detect)
9611 	{
9612 	    cmd_runtime((char_u *)FILETYPE_FILE, TRUE);
9613 	    filetype_detect = TRUE;
9614 	    if (plugin)
9615 	    {
9616 		cmd_runtime((char_u *)FTPLUGIN_FILE, TRUE);
9617 		filetype_plugin = TRUE;
9618 	    }
9619 	    if (indent)
9620 	    {
9621 		cmd_runtime((char_u *)INDENT_FILE, TRUE);
9622 		filetype_indent = TRUE;
9623 	    }
9624 	}
9625 	if (*arg == 'd')
9626 	{
9627 	    (void)do_doautocmd((char_u *)"filetypedetect BufRead", TRUE);
9628 	    do_modelines(FALSE);
9629 	}
9630     }
9631     else if (STRCMP(arg, "off") == 0)
9632     {
9633 	if (plugin || indent)
9634 	{
9635 	    if (plugin)
9636 	    {
9637 		cmd_runtime((char_u *)FTPLUGOF_FILE, TRUE);
9638 		filetype_plugin = FALSE;
9639 	    }
9640 	    if (indent)
9641 	    {
9642 		cmd_runtime((char_u *)INDOFF_FILE, TRUE);
9643 		filetype_indent = FALSE;
9644 	    }
9645 	}
9646 	else
9647 	{
9648 	    cmd_runtime((char_u *)FTOFF_FILE, TRUE);
9649 	    filetype_detect = FALSE;
9650 	}
9651     }
9652     else
9653 	EMSG2(_(e_invarg2), arg);
9654 }
9655 
9656 /*
9657  * ":setfiletype {name}"
9658  */
9659     static void
9660 ex_setfiletype(eap)
9661     exarg_T	*eap;
9662 {
9663     if (!did_filetype)
9664 	set_option_value((char_u *)"filetype", 0L, eap->arg, OPT_LOCAL);
9665 }
9666 #endif
9667 
9668 /*ARGSUSED*/
9669     static void
9670 ex_digraphs(eap)
9671     exarg_T	*eap;
9672 {
9673 #ifdef FEAT_DIGRAPHS
9674     if (*eap->arg != NUL)
9675 	putdigraph(eap->arg);
9676     else
9677 	listdigraphs();
9678 #else
9679     EMSG(_("E196: No digraphs in this version"));
9680 #endif
9681 }
9682 
9683     static void
9684 ex_set(eap)
9685     exarg_T	*eap;
9686 {
9687     int		flags = 0;
9688 
9689     if (eap->cmdidx == CMD_setlocal)
9690 	flags = OPT_LOCAL;
9691     else if (eap->cmdidx == CMD_setglobal)
9692 	flags = OPT_GLOBAL;
9693 #if defined(FEAT_EVAL) && defined(FEAT_AUTOCMD) && defined(FEAT_BROWSE)
9694     if (cmdmod.browse && flags == 0)
9695 	ex_options(eap);
9696     else
9697 #endif
9698 	(void)do_set(eap->arg, flags);
9699 }
9700 
9701 #ifdef FEAT_SEARCH_EXTRA
9702 /*
9703  * ":nohlsearch"
9704  */
9705 /*ARGSUSED*/
9706     static void
9707 ex_nohlsearch(eap)
9708     exarg_T	*eap;
9709 {
9710     no_hlsearch = TRUE;
9711     redraw_all_later(NOT_VALID);
9712 }
9713 
9714 /*
9715  * ":match {group} {pattern}"
9716  * Sets nextcmd to the start of the next command, if any.  Also called when
9717  * skipping commands to find the next command.
9718  */
9719     static void
9720 ex_match(eap)
9721     exarg_T	*eap;
9722 {
9723     char_u	*p;
9724     char_u	*end;
9725     int		c;
9726 
9727     /* First clear any old pattern. */
9728     if (!eap->skip)
9729     {
9730 	vim_free(curwin->w_match.regprog);
9731 	curwin->w_match.regprog = NULL;
9732 	redraw_later(NOT_VALID);	/* always need a redraw */
9733     }
9734 
9735     if (ends_excmd(*eap->arg))
9736 	end = eap->arg;
9737     else if ((STRNICMP(eap->arg, "none", 4) == 0
9738 		&& (vim_iswhite(eap->arg[4]) || ends_excmd(eap->arg[4]))))
9739 	end = eap->arg + 4;
9740     else
9741     {
9742 	p = skiptowhite(eap->arg);
9743 	if (!eap->skip)
9744 	{
9745 	    curwin->w_match_id = syn_namen2id(eap->arg, (int)(p - eap->arg));
9746 	    if (curwin->w_match_id == 0)
9747 	    {
9748 		EMSG2(_(e_nogroup), eap->arg);
9749 		return;
9750 	    }
9751 	}
9752 	p = skipwhite(p);
9753 	if (*p == NUL)
9754 	{
9755 	    /* There must be two arguments. */
9756 	    EMSG2(_(e_invarg2), eap->arg);
9757 	    return;
9758 	}
9759 	end = skip_regexp(p + 1, *p, TRUE, NULL);
9760 	if (!eap->skip)
9761 	{
9762 	    if (*end != NUL && !ends_excmd(*skipwhite(end + 1)))
9763 	    {
9764 		eap->errmsg = e_trailing;
9765 		return;
9766 	    }
9767 
9768 	    c = *end;
9769 	    *end = NUL;
9770 	    curwin->w_match.regprog = vim_regcomp(p + 1, RE_MAGIC);
9771 	    *end = c;
9772 	    if (curwin->w_match.regprog == NULL)
9773 	    {
9774 		EMSG2(_(e_invarg2), p);
9775 		return;
9776 	    }
9777 	}
9778     }
9779     eap->nextcmd = find_nextcmd(end);
9780 }
9781 #endif
9782 
9783 #ifdef FEAT_CRYPT
9784 /*
9785  * ":X": Get crypt key
9786  */
9787 /*ARGSUSED*/
9788     static void
9789 ex_X(eap)
9790     exarg_T	*eap;
9791 {
9792     (void)get_crypt_key(TRUE, TRUE);
9793 }
9794 #endif
9795 
9796 #ifdef FEAT_FOLDING
9797     static void
9798 ex_fold(eap)
9799     exarg_T	*eap;
9800 {
9801     if (foldManualAllowed(TRUE))
9802 	foldCreate(eap->line1, eap->line2);
9803 }
9804 
9805     static void
9806 ex_foldopen(eap)
9807     exarg_T	*eap;
9808 {
9809     opFoldRange(eap->line1, eap->line2, eap->cmdidx == CMD_foldopen,
9810 							 eap->forceit, FALSE);
9811 }
9812 
9813     static void
9814 ex_folddo(eap)
9815     exarg_T	*eap;
9816 {
9817     linenr_T	lnum;
9818 
9819     /* First set the marks for all lines closed/open. */
9820     for (lnum = eap->line1; lnum <= eap->line2; ++lnum)
9821 	if (hasFolding(lnum, NULL, NULL) == (eap->cmdidx == CMD_folddoclosed))
9822 	    ml_setmarked(lnum);
9823 
9824     /* Execute the command on the marked lines. */
9825     global_exe(eap->arg);
9826     ml_clearmarked();	   /* clear rest of the marks */
9827 }
9828 #endif
9829