summaryrefslogtreecommitdiffstats
path: root/src/arglist.c
blob: 8825c8e252ccc574271de1dc1e8900eb163ac28f (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155
1156
1157
1158
1159
1160
1161
1162
1163
1164
1165
1166
1167
1168
1169
1170
1171
1172
1173
1174
1175
1176
1177
1178
1179
1180
1181
1182
1183
1184
1185
1186
1187
1188
1189
1190
1191
1192
1193
1194
1195
1196
1197
1198
1199
1200
1201
1202
1203
1204
1205
1206
1207
1208
1209
1210
1211
1212
1213
1214
1215
1216
1217
1218
1219
1220
1221
1222
1223
1224
1225
1226
1227
1228
1229
1230
1231
1232
1233
1234
1235
1236
1237
1238
1239
1240
1241
1242
1243
1244
1245
1246
1247
1248
1249
1250
1251
1252
1253
1254
1255
1256
1257
1258
1259
1260
1261
1262
1263
1264
1265
1266
1267
1268
1269
1270
1271
1272
1273
1274
1275
1276
1277
1278
1279
1280
1281
1282
1283
1284
1285
1286
1287
1288
1289
1290
1291
1292
1293
1294
1295
1296
1297
1298
1299
1300
1301
1302
1303
1304
1305
1306
1307
1308
1309
1310
1311
1312
1313
1314
1315
1316
1317
1318
1319
1320
1321
1322
1323
1324
1325
1326
1327
1328
1329
1330
1331
1332
1333
1334
1335
1336
1337
1338
1339
1340
1341
1342
1343
1344
1345
1346
1347
1348
1349
1350
1351
1352
1353
1354
1355
1356
1357
1358
1359
1360
1361
1362
1363
1364
1365
1366
1367
1368
1369
1370
1371
1372
1373
1374
1375
1376
1377
1378
1379
1380
1381
1382
1383
1384
1385
1386
1387
1388
1389
1390
1391
1392
1393
1394
1395
1396
1397
1398
1399
1400
1401
1402
1403
1404
1405
1406
1407
1408
1409
1410
1411
1412
1413
1414
1415
1416
1417
1418
1419
1420
1421
1422
1423
1424
1425
1426
1427
1428
1429
1430
1431
1432
1433
1434
1435
1436
1437
1438
1439
1440
1441
1442
1443
1444
1445
1446
1447
1448
1449
1450
1451
1452
1453
1454
1455
1456
1457
1458
1459
1460
1461
1462
1463
1464
1465
1466
1467
1468
1469
1470
1471
1472
1473
1474
1475
1476
1477
1478
1479
1480
1481
1482
1483
1484
1485
1486
1487
1488
1489
1490
1491
1492
1493
1494
1495
1496
1497
1498
1499
1500
1501
1502
1503
1504
1505
1506
1507
1508
1509
1510
1511
1512
1513
1514
1515
1516
1517
1518
1519
/* vi:set ts=8 sts=4 sw=4 noet:
 *
 * VIM - Vi IMproved	by Bram Moolenaar
 *
 * Do ":help uganda"  in Vim to read copying and usage conditions.
 * Do ":help credits" in Vim to see a list of people who contributed.
 * See README.txt for an overview of the Vim source code.
 */

/*
 * arglist.c: functions for dealing with the argument list
 */

#include "vim.h"

#define AL_SET	1
#define AL_ADD	2
#define AL_DEL	3

// This flag is set whenever the argument list is being changed and calling a
// function that might trigger an autocommand.
static int arglist_locked = FALSE;

    static int
check_arglist_locked(void)
{
    if (arglist_locked)
    {
	emsg(_(e_cannot_change_arglist_recursively));
	return FAIL;
    }
    return OK;
}

/*
 * Clear an argument list: free all file names and reset it to zero entries.
 */
    void
alist_clear(alist_T *al)
{
    if (check_arglist_locked() == FAIL)
	return;
    while (--al->al_ga.ga_len >= 0)
	vim_free(AARGLIST(al)[al->al_ga.ga_len].ae_fname);
    ga_clear(&al->al_ga);
}

/*
 * Init an argument list.
 */
    void
alist_init(alist_T *al)
{
    ga_init2(&al->al_ga, sizeof(aentry_T), 5);
}

/*
 * Remove a reference from an argument list.
 * Ignored when the argument list is the global one.
 * If the argument list is no longer used by any window, free it.
 */
    void
alist_unlink(alist_T *al)
{
    if (al != &global_alist && --al->al_refcount <= 0)
    {
	alist_clear(al);
	vim_free(al);
    }
}

/*
 * Create a new argument list and use it for the current window.
 */
    void
alist_new(void)
{
    curwin->w_alist = ALLOC_ONE(alist_T);
    if (curwin->w_alist == NULL)
    {
	curwin->w_alist = &global_alist;
	++global_alist.al_refcount;
    }
    else
    {
	curwin->w_alist->al_refcount = 1;
	curwin->w_alist->id = ++max_alist_id;
	alist_init(curwin->w_alist);
    }
}

#if !defined(UNIX) || defined(PROTO)
/*
 * Expand the file names in the global argument list.
 * If "fnum_list" is not NULL, use "fnum_list[fnum_len]" as a list of buffer
 * numbers to be re-used.
 */
    void
alist_expand(int *fnum_list, int fnum_len)
{
    char_u	**old_arg_files;
    int		old_arg_count;
    char_u	**new_arg_files;
    int		new_arg_file_count;
    char_u	*save_p_su = p_su;
    int		i;

    old_arg_files = ALLOC_MULT(char_u *, GARGCOUNT);
    if (old_arg_files == NULL)
	return;

    // Don't use 'suffixes' here.  This should work like the shell did the
    // expansion.  Also, the vimrc file isn't read yet, thus the user
    // can't set the options.
    p_su = empty_option;
    for (i = 0; i < GARGCOUNT; ++i)
	old_arg_files[i] = vim_strsave(GARGLIST[i].ae_fname);
    old_arg_count = GARGCOUNT;
    if (expand_wildcards(old_arg_count, old_arg_files,
		&new_arg_file_count, &new_arg_files,
		EW_FILE|EW_NOTFOUND|EW_ADDSLASH|EW_NOERROR) == OK
	    && new_arg_file_count > 0)
    {
	alist_set(&global_alist, new_arg_file_count, new_arg_files,
		TRUE, fnum_list, fnum_len);
	FreeWild(old_arg_count, old_arg_files);
    }
    p_su = save_p_su;
}
#endif

/*
 * Set the argument list for the current window.
 * Takes over the allocated files[] and the allocated fnames in it.
 */
    void
alist_set(
    alist_T	*al,
    int		count,
    char_u	**files,
    int		use_curbuf,
    int		*fnum_list,
    int		fnum_len)
{
    int		i;

    if (check_arglist_locked() == FAIL)
	return;

    alist_clear(al);
    if (GA_GROW_OK(&al->al_ga, count))
    {
	for (i = 0; i < count; ++i)
	{
	    if (got_int)
	    {
		// When adding many buffers this can take a long time.  Allow
		// interrupting here.
		while (i < count)
		    vim_free(files[i++]);
		break;
	    }

	    // May set buffer name of a buffer previously used for the
	    // argument list, so that it's re-used by alist_add.
	    if (fnum_list != NULL && i < fnum_len)
	    {
		arglist_locked = TRUE;
		buf_set_name(fnum_list[i], files[i]);
		arglist_locked = FALSE;
	    }

	    alist_add(al, files[i], use_curbuf ? 2 : 1);
	    ui_breakcheck();
	}
	vim_free(files);
    }
    else
	FreeWild(count, files);
    if (al == &global_alist)
	arg_had_last = FALSE;
}

/*
 * Add file "fname" to argument list "al".
 * "fname" must have been allocated and "al" must have been checked for room.
 *
 * May trigger Buf* autocommands
 */
    void
alist_add(
    alist_T	*al,
    char_u	*fname,
    int		set_fnum)	// 1: set buffer number; 2: re-use curbuf
{
    if (fname == NULL)		// don't add NULL file names
	return;
    if (check_arglist_locked() == FAIL)
	return;
    arglist_locked = TRUE;
    curwin->w_locked = TRUE;

#ifdef BACKSLASH_IN_FILENAME
    slash_adjust(fname);
#endif
    AARGLIST(al)[al->al_ga.ga_len].ae_fname = fname;
    if (set_fnum > 0)
	AARGLIST(al)[al->al_ga.ga_len].ae_fnum =
	    buflist_add(fname, BLN_LISTED | (set_fnum == 2 ? BLN_CURBUF : 0));
    ++al->al_ga.ga_len;

    arglist_locked = FALSE;
    curwin->w_locked = FALSE;
}

#if defined(BACKSLASH_IN_FILENAME) || defined(PROTO)
/*
 * Adjust slashes in file names.  Called after 'shellslash' was set.
 */
    void
alist_slash_adjust(void)
{
    int		i;
    win_T	*wp;
    tabpage_T	*tp;

    for (i = 0; i < GARGCOUNT; ++i)
	if (GARGLIST[i].ae_fname != NULL)
	    slash_adjust(GARGLIST[i].ae_fname);
    FOR_ALL_TAB_WINDOWS(tp, wp)
	if (wp->w_alist != &global_alist)
	    for (i = 0; i < WARGCOUNT(wp); ++i)
		if (WARGLIST(wp)[i].ae_fname != NULL)
		    slash_adjust(WARGLIST(wp)[i].ae_fname);
}
#endif

/*
 * Isolate one argument, taking backticks.
 * Changes the argument in-place, puts a NUL after it.  Backticks remain.
 * Return a pointer to the start of the next argument.
 */
    static char_u *
do_one_arg(char_u *str)
{
    char_u	*p;
    int		inbacktick;

    inbacktick = FALSE;
    for (p = str; *str; ++str)
    {
	// When the backslash is used for escaping the special meaning of a
	// character we need to keep it until wildcard expansion.
	if (rem_backslash(str))
	{
	    *p++ = *str++;
	    *p++ = *str;
	}
	else
	{
	    // An item ends at a space not in backticks
	    if (!inbacktick && vim_isspace(*str))
		break;
	    if (*str == '`')
		inbacktick ^= TRUE;
	    *p++ = *str;
	}
    }
    str = skipwhite(str);
    *p = NUL;

    return str;
}

/*
 * Separate the arguments in "str" and return a list of pointers in the
 * growarray "gap".
 */
    static int
get_arglist(garray_T *gap, char_u *str, int escaped)
{
    ga_init2(gap, sizeof(char_u *), 20);
    while (*str != NUL)
    {
	if (ga_grow(gap, 1) == FAIL)
	{
	    ga_clear(gap);
	    return FAIL;
	}
	((char_u **)gap->ga_data)[gap->ga_len++] = str;

	// If str is escaped, don't handle backslashes or spaces
	if (!escaped)
	    return OK;

	// Isolate one argument, change it in-place, put a NUL after it.
	str = do_one_arg(str);
    }
    return OK;
}

#if defined(FEAT_QUICKFIX) || defined(FEAT_SYN_HL) || defined(FEAT_SPELL) || defined(PROTO)
/*
 * Parse a list of arguments (file names), expand them and return in
 * "fnames[fcountp]".  When "wig" is TRUE, removes files matching 'wildignore'.
 * Return FAIL or OK.
 */
    int
get_arglist_exp(
    char_u	*str,
    int		*fcountp,
    char_u	***fnamesp,
    int		wig)
{
    garray_T	ga;
    int		i;

    if (get_arglist(&ga, str, TRUE) == FAIL)
	return FAIL;
    if (wig == TRUE)
	i = expand_wildcards(ga.ga_len, (char_u **)ga.ga_data,
			     fcountp, fnamesp, EW_FILE|EW_NOTFOUND|EW_NOTWILD);
    else
	i = gen_expand_wildcards(ga.ga_len, (char_u **)ga.ga_data,
			     fcountp, fnamesp, EW_FILE|EW_NOTFOUND|EW_NOTWILD);

    ga_clear(&ga);
    return i;
}
#endif

/*
 * Check the validity of the arg_idx for each other window.
 */
    static void
alist_check_arg_idx(void)
{
    win_T	*win;
    tabpage_T	*tp;

    FOR_ALL_TAB_WINDOWS(tp, win)
	if (win->w_alist == curwin->w_alist)
	    check_arg_idx(win);
}

/*
 * Add files[count] to the arglist of the current window after arg "after".
 * The file names in files[count] must have been allocated and are taken over.
 * Files[] itself is not taken over.
 */
    static void
alist_add_list(
    int		count,
    char_u	**files,
    int		after,	    // where to add: 0 = before first one
    int		will_edit)  // will edit adding argument
{
    int		i;
    int		old_argcount = ARGCOUNT;

    if (check_arglist_locked() != FAIL
	    && GA_GROW_OK(&ALIST(curwin)->al_ga, count))
    {
	if (after < 0)
	    after = 0;
	if (after > ARGCOUNT)
	    after = ARGCOUNT;
	if (after < ARGCOUNT)
	    mch_memmove(&(ARGLIST[after + count]), &(ARGLIST[after]),
				       (ARGCOUNT - after) * sizeof(aentry_T));
	arglist_locked = TRUE;
	curwin->w_locked = TRUE;
	for (i = 0; i < count; ++i)
	{
	    int flags = BLN_LISTED | (will_edit ? BLN_CURBUF : 0);

	    ARGLIST[after + i].ae_fname = files[i];
	    ARGLIST[after + i].ae_fnum = buflist_add(files[i], flags);
	}
	arglist_locked = FALSE;
	curwin->w_locked = FALSE;
	ALIST(curwin)->al_ga.ga_len += count;
	if (old_argcount > 0 && curwin->w_arg_idx >= after)
	    curwin->w_arg_idx += count;
	return;
    }

    for (i = 0; i < count; ++i)
	vim_free(files[i]);
}

/*
 * Delete the file names in 'alist_ga' from the argument list.
 */
    static void
arglist_del_files(garray_T *alist_ga)
{
    regmatch_T	regmatch;
    int		didone;
    int		i;
    char_u	*p;
    int		match;

    // Delete the items: use each item as a regexp and find a match in the
    // argument list.
    regmatch.rm_ic = p_fic;	// ignore case when 'fileignorecase' is set
    for (i = 0; i < alist_ga->ga_len && !got_int; ++i)
    {
	p = ((char_u **)alist_ga->ga_data)[i];
	p = file_pat_to_reg_pat(p, NULL, NULL, FALSE);
	if (p == NULL)
	    break;
	regmatch.regprog = vim_regcomp(p, magic_isset() ? RE_MAGIC : 0);
	if (regmatch.regprog == NULL)
	{
	    vim_free(p);
	    break;
	}

	didone = FALSE;
	for (match = 0; match < ARGCOUNT; ++match)
	    if (vim_regexec(&regmatch, alist_name(&ARGLIST[match]), (colnr_T)0))
	    {
		didone = TRUE;
		vim_free(ARGLIST[match].ae_fname);
		mch_memmove(ARGLIST + match, ARGLIST + match + 1,
			(ARGCOUNT - match - 1) * sizeof(aentry_T));
		--ALIST(curwin)->al_ga.ga_len;
		if (curwin->w_arg_idx > match)
		    --curwin->w_arg_idx;
		--match;
	    }

	vim_regfree(regmatch.regprog);
	vim_free(p);
	if (!didone)
	    semsg(_(e_no_match_str_2), ((char_u **)alist_ga->ga_data)[i]);
    }
    ga_clear(alist_ga);
}

/*
 * "what" == AL_SET: Redefine the argument list to 'str'.
 * "what" == AL_ADD: add files in 'str' to the argument list after "after".
 * "what" == AL_DEL: remove files in 'str' from the argument list.
 *
 * Return FAIL for failure, OK otherwise.
 */
    static int
do_arglist(
    char_u	*str,
    int		what,
    int		after UNUSED,	// 0 means before first one
    int		will_edit)	// will edit added argument
{
    garray_T	new_ga;
    int		exp_count;
    char_u	**exp_files;
    int		i;
    int		arg_escaped = TRUE;

    if (check_arglist_locked() == FAIL)
	return FAIL;

    // Set default argument for ":argadd" command.
    if (what == AL_ADD && *str == NUL)
    {
	if (curbuf->b_ffname == NULL)
	    return FAIL;
	str = curbuf->b_fname;
	arg_escaped = FALSE;
    }

    // Collect all file name arguments in "new_ga".
    if (get_arglist(&new_ga, str, arg_escaped) == FAIL)
	return FAIL;

    if (what == AL_DEL)
	arglist_del_files(&new_ga);
    else
    {
	i = expand_wildcards(new_ga.ga_len, (char_u **)new_ga.ga_data,
		&exp_count, &exp_files, EW_DIR|EW_FILE|EW_ADDSLASH|EW_NOTFOUND);
	ga_clear(&new_ga);
	if (i == FAIL || exp_count == 0)
	{
	    emsg(_(e_no_match));
	    return FAIL;
	}

	if (what == AL_ADD)
	{
	    alist_add_list(exp_count, exp_files, after, will_edit);
	    vim_free(exp_files);
	}
	else // what == AL_SET
	    alist_set(ALIST(curwin), exp_count, exp_files, will_edit, NULL, 0);
    }

    alist_check_arg_idx();

    return OK;
}

/*
 * Redefine the argument list.
 */
    void
set_arglist(char_u *str)
{
    do_arglist(str, AL_SET, 0, TRUE);
}

/*
 * Return TRUE if window "win" is editing the file at the current argument
 * index.
 */
    int
editing_arg_idx(win_T *win)
{
    return !(win->w_arg_idx >= WARGCOUNT(win)
		|| (win->w_buffer->b_fnum
				      != WARGLIST(win)[win->w_arg_idx].ae_fnum
		    && (win->w_buffer->b_ffname == NULL
			 || !(fullpathcmp(
				 alist_name(&WARGLIST(win)[win->w_arg_idx]),
			  win->w_buffer->b_ffname, TRUE, TRUE) & FPC_SAME))));
}

/*
 * Check if window "win" is editing the w_arg_idx file in its argument list.
 */
    void
check_arg_idx(win_T *win)
{
    if (WARGCOUNT(win) > 1 && !editing_arg_idx(win))
    {
	// We are not editing the current entry in the argument list.
	// Set "arg_had_last" if we are editing the last one.
	win->w_arg_idx_invalid = TRUE;
	if (win->w_arg_idx != WARGCOUNT(win) - 1
		&& arg_had_last == FALSE
		&& ALIST(win) == &global_alist
		&& GARGCOUNT > 0
		&& win->w_arg_idx < GARGCOUNT
		&& (win->w_buffer->b_fnum == GARGLIST[GARGCOUNT - 1].ae_fnum
		    || (win->w_buffer->b_ffname != NULL
			&& (fullpathcmp(alist_name(&GARGLIST[GARGCOUNT - 1]),
			  win->w_buffer->b_ffname, TRUE, TRUE) & FPC_SAME))))
	    arg_had_last = TRUE;
    }
    else
    {
	// We are editing the current entry in the argument list.
	// Set "arg_had_last" if it's also the last one
	win->w_arg_idx_invalid = FALSE;
	if (win->w_arg_idx == WARGCOUNT(win) - 1
					      && win->w_alist == &global_alist)
	    arg_had_last = TRUE;
    }
}

/*
 * ":args", ":argslocal" and ":argsglobal".
 */
    void
ex_args(exarg_T *eap)
{
    int		i;

    if (eap->cmdidx != CMD_args)
    {
	if (check_arglist_locked() == FAIL)
	    return;
	alist_unlink(ALIST(curwin));
	if (eap->cmdidx == CMD_argglobal)
	    ALIST(curwin) = &global_alist;
	else // eap->cmdidx == CMD_arglocal
	    alist_new();
    }

    // ":args file ..": define new argument list, handle like ":next"
    // Also for ":argslocal file .." and ":argsglobal file ..".
    if (*eap->arg != NUL)
    {
	if (check_arglist_locked() == FAIL)
	    return;
	ex_next(eap);
	return;
    }

    // ":args": list arguments.
    if (eap->cmdidx == CMD_args)
    {
	char_u **items;

	if (ARGCOUNT <= 0)
	    return;		// empty argument list

	items = ALLOC_MULT(char_u *, ARGCOUNT);
	if (items == NULL)
	    return;

	// Overwrite the command, for a short list there is no scrolling
	// required and no wait_return().
	gotocmdline(TRUE);

	for (i = 0; i < ARGCOUNT; ++i)
	    items[i] = alist_name(&ARGLIST[i]);
	list_in_columns(items, ARGCOUNT, curwin->w_arg_idx);
	vim_free(items);

	return;
    }

    // ":argslocal": make a local copy of the global argument list.
    if (eap->cmdidx == CMD_arglocal)
    {
	garray_T	*gap = &curwin->w_alist->al_ga;

	if (GA_GROW_FAILS(gap, GARGCOUNT))
	    return;

	for (i = 0; i < GARGCOUNT; ++i)
	    if (GARGLIST[i].ae_fname != NULL)
	    {
		AARGLIST(curwin->w_alist)[gap->ga_len].ae_fname =
		    vim_strsave(GARGLIST[i].ae_fname);
		AARGLIST(curwin->w_alist)[gap->ga_len].ae_fnum =
		    GARGLIST[i].ae_fnum;
		++gap->ga_len;
	    }
    }
}

/*
 * ":previous", ":sprevious", ":Next" and ":sNext".
 */
    void
ex_previous(exarg_T *eap)
{
    // If past the last one already, go to the last one.
    if (curwin->w_arg_idx - (int)eap->line2 >= ARGCOUNT)
	do_argfile(eap, ARGCOUNT - 1);
    else
	do_argfile(eap, curwin->w_arg_idx - (int)eap->line2);
}

/*
 * ":rewind", ":first", ":sfirst" and ":srewind".
 */
    void
ex_rewind(exarg_T *eap)
{
    do_argfile(eap, 0);
}

/*
 * ":last" and ":slast".
 */
    void
ex_last(exarg_T *eap)
{
    do_argfile(eap, ARGCOUNT - 1);
}

/*
 * ":argument" and ":sargument".
 */
    void
ex_argument(exarg_T *eap)
{
    int		i;

    if (eap->addr_count > 0)
	i = eap->line2 - 1;
    else
	i = curwin->w_arg_idx;
    do_argfile(eap, i);
}

/*
 * Edit file "argn" of the argument lists.
 */
    void
do_argfile(exarg_T *eap, int argn)
{
    int		other;
    char_u	*p;
    int		old_arg_idx = curwin->w_arg_idx;
    int is_split_cmd = *eap->cmd == 's';

    if (ERROR_IF_ANY_POPUP_WINDOW)
	return;
    if (argn < 0 || argn >= ARGCOUNT)
    {
	if (ARGCOUNT <= 1)
	    emsg(_(e_there_is_only_one_file_to_edit));
	else if (argn < 0)
	    emsg(_(e_cannot_go_before_first_file));
	else
	    emsg(_(e_cannot_go_beyond_last_file));

	return;
    }

    if (!is_split_cmd
	    && (&ARGLIST[argn])->ae_fnum != curbuf->b_fnum
	    && !check_can_set_curbuf_forceit(eap->forceit))
	return;

    setpcmark();
#ifdef FEAT_GUI
    need_mouse_correct = TRUE;
#endif

    // split window or create new tab page first
    if (is_split_cmd || cmdmod.cmod_tab != 0)
    {
	if (win_split(0, 0) == FAIL)
	    return;
	RESET_BINDING(curwin);
    }
    else
    {
	// if 'hidden' set, only check for changed file when re-editing
	// the same buffer
	other = TRUE;
	if (buf_hide(curbuf))
	{
	    p = fix_fname(alist_name(&ARGLIST[argn]));
	    other = otherfile(p);
	    vim_free(p);
	}
	if ((!buf_hide(curbuf) || !other)
		&& check_changed(curbuf, CCGD_AW
		    | (other ? 0 : CCGD_MULTWIN)
		    | (eap->forceit ? CCGD_FORCEIT : 0)
		    | CCGD_EXCMD))
	    return;
    }

    curwin->w_arg_idx = argn;
    if (argn == ARGCOUNT - 1 && curwin->w_alist == &global_alist)
	arg_had_last = TRUE;

    // Edit the file; always use the last known line number.
    // When it fails (e.g. Abort for already edited file) restore the
    // argument index.
    if (do_ecmd(0, alist_name(&ARGLIST[curwin->w_arg_idx]), NULL,
		eap, ECMD_LAST,
		(buf_hide(curwin->w_buffer) ? ECMD_HIDE : 0)
		+ (eap->forceit ? ECMD_FORCEIT : 0), curwin) == FAIL)
	curwin->w_arg_idx = old_arg_idx;
    // like Vi: set the mark where the cursor is in the file.
    else if (eap->cmdidx != CMD_argdo)
	setmark('\'');
}

/*
 * ":next", and commands that behave like it.
 */
    void
ex_next(exarg_T *eap)
{
    int		i;

    // check for changed buffer now, if this fails the argument list is not
    // redefined.
    if (       buf_hide(curbuf)
	    || eap->cmdidx == CMD_snext
	    || !check_changed(curbuf, CCGD_AW
				    | (eap->forceit ? CCGD_FORCEIT : 0)
				    | CCGD_EXCMD))
    {
	if (*eap->arg != NUL)		    // redefine file list
	{
	    if (do_arglist(eap->arg, AL_SET, 0, TRUE) == FAIL)
		return;
	    i = 0;
	}
	else
	    i = curwin->w_arg_idx + (int)eap->line2;
	do_argfile(eap, i);
    }
}

/*
 * ":argdedupe"
 */
    void
ex_argdedupe(exarg_T *eap UNUSED)
{
    int i;
    int j;

    for (i = 0; i < ARGCOUNT; ++i)
    {
	// Expand each argument to a full path to catch different paths leading
	// to the same file.
	char_u *firstFullname = FullName_save(ARGLIST[i].ae_fname, FALSE);
	if (firstFullname == NULL)
	    return;  // out of memory

	for (j = i + 1; j < ARGCOUNT; ++j)
	{
	    char_u *secondFullname = FullName_save(ARGLIST[j].ae_fname, FALSE);
	    if (secondFullname == NULL)
		break;  // out of memory
	    int areNamesDuplicate =
				  fnamecmp(firstFullname, secondFullname) == 0;
	    vim_free(secondFullname);

	    if (areNamesDuplicate)
	    {
		// remove one duplicate argument
		vim_free(ARGLIST[j].ae_fname);
		mch_memmove(ARGLIST + j, ARGLIST + j + 1,
					(ARGCOUNT - j - 1) * sizeof(aentry_T));
		--ARGCOUNT;

		if (curwin->w_arg_idx == j)
		    curwin->w_arg_idx = i;
		else if (curwin->w_arg_idx > j)
		    --curwin->w_arg_idx;

		--j;
	    }
	}

	vim_free(firstFullname);
    }
}

/*
 * ":argedit"
 */
    void
ex_argedit(exarg_T *eap)
{
    int i = eap->addr_count ? (int)eap->line2 : curwin->w_arg_idx + 1;
    // Whether curbuf will be reused, curbuf->b_ffname will be set.
    int curbuf_is_reusable = curbuf_reusable();

    if (do_arglist(eap->arg, AL_ADD, i, TRUE) == FAIL)
	return;
    maketitle();

    if (curwin->w_arg_idx == 0
	    && (curbuf->b_ml.ml_flags & ML_EMPTY)
	    && (curbuf->b_ffname == NULL || curbuf_is_reusable))
	i = 0;
    // Edit the argument.
    if (i < ARGCOUNT)
	do_argfile(eap, i);
}

/*
 * ":argadd"
 */
    void
ex_argadd(exarg_T *eap)
{
    do_arglist(eap->arg, AL_ADD,
	       eap->addr_count > 0 ? (int)eap->line2 : curwin->w_arg_idx + 1,
	       FALSE);
    maketitle();
}

/*
 * ":argdelete"
 */
    void
ex_argdelete(exarg_T *eap)
{
    int		i;
    int		n;

    if (check_arglist_locked() == FAIL)
	return;

    if (eap->addr_count > 0 || *eap->arg == NUL)
    {
	// ":argdel" works like ":.argdel"
	if (eap->addr_count == 0)
	{
	    if (curwin->w_arg_idx >= ARGCOUNT)
	    {
		emsg(_(e_no_argument_to_delete));
		return;
	    }
	    eap->line1 = eap->line2 = curwin->w_arg_idx + 1;
	}
	else if (eap->line2 > ARGCOUNT)
	    // ":1,4argdel": Delete all arguments in the range.
	    eap->line2 = ARGCOUNT;
	n = eap->line2 - eap->line1 + 1;
	if (*eap->arg != NUL)
	    // Can't have both a range and an argument.
	    emsg(_(e_invalid_argument));
	else if (n <= 0)
	{
	    // Don't give an error for ":%argdel" if the list is empty.
	    if (eap->line1 != 1 || eap->line2 != 0)
		emsg(_(e_invalid_range));
	}
	else
	{
	    for (i = eap->line1; i <= eap->line2; ++i)
		vim_free(ARGLIST[i - 1].ae_fname);
	    mch_memmove(ARGLIST + eap->line1 - 1, ARGLIST + eap->line2,
			(size_t)((ARGCOUNT - eap->line2) * sizeof(aentry_T)));
	    ALIST(curwin)->al_ga.ga_len -= n;
	    if (curwin->w_arg_idx >= eap->line2)
		curwin->w_arg_idx -= n;
	    else if (curwin->w_arg_idx > eap->line1)
		curwin->w_arg_idx = eap->line1;
	    if (ARGCOUNT == 0)
		curwin->w_arg_idx = 0;
	    else if (curwin->w_arg_idx >= ARGCOUNT)
		curwin->w_arg_idx = ARGCOUNT - 1;
	}
    }
    else
	do_arglist(eap->arg, AL_DEL, 0, FALSE);
    maketitle();
}

/*
 * Function given to ExpandGeneric() to obtain the possible arguments of the
 * argedit and argdelete commands.
 */
    char_u *
get_arglist_name(expand_T *xp UNUSED, int idx)
{
    if (idx >= ARGCOUNT)
	return NULL;

    return alist_name(&ARGLIST[idx]);
}

/*
 * Get the file name for an argument list entry.
 */
    char_u *
alist_name(aentry_T *aep)
{
    buf_T	*bp;

    // Use the name from the associated buffer if it exists.
    bp = buflist_findnr(aep->ae_fnum);
    if (bp == NULL || bp->b_fname == NULL)
	return aep->ae_fname;
    return bp->b_fname;
}

/*
 * State used by the :all command to open all the files in the argument list in
 * separate windows.
 */
typedef struct {
    alist_T	*alist;		// argument list to be used
    int		had_tab;
    int		keep_tabs;
    int		forceit;

    int		use_firstwin;	// use first window for arglist
    char_u	*opened;	// Array of weight for which args are open:
				//  0: not opened
				//  1: opened in other tab
				//  2: opened in curtab
				//  3: opened in curtab and curwin
    int		opened_len;	// length of opened[]
    win_T	*new_curwin;
    tabpage_T	*new_curtab;
} arg_all_state_T;

/*
 * Close all the windows containing files which are not in the argument list.
 * Used by the ":all" command.
 */
    static void
arg_all_close_unused_windows(arg_all_state_T *aall)
{
    win_T	*wp;
    win_T	*wpnext;
    tabpage_T	*tpnext;
    buf_T	*buf;
    int		i;
    win_T	*old_curwin;
    tabpage_T	*old_curtab;

    old_curwin = curwin;
    old_curtab = curtab;

    if (aall->had_tab > 0)
	goto_tabpage_tp(first_tabpage, TRUE, TRUE);

    // moving tabpages around in an autocommand may cause an endless loop
    tabpage_move_disallowed++;
    for (;;)
    {
	tpnext = curtab->tp_next;
	for (wp = firstwin; wp != NULL; wp = wpnext)
	{
	    wpnext = wp->w_next;
	    buf = wp->w_buffer;
	    if (buf->b_ffname == NULL
		    || (!aall->keep_tabs && (buf->b_nwindows > 1
			    || wp->w_width != Columns)))
		i = aall->opened_len;
	    else
	    {
		// check if the buffer in this window is in the arglist
		for (i = 0; i < aall->opened_len; ++i)
		{
		    if (i < aall->alist->al_ga.ga_len
			    && (AARGLIST(aall->alist)[i].ae_fnum == buf->b_fnum
				|| fullpathcmp(alist_name(
						    &AARGLIST(aall->alist)[i]),
					buf->b_ffname, TRUE, TRUE) & FPC_SAME))
		    {
			int weight = 1;

			if (old_curtab == curtab)
			{
			    ++weight;
			    if (old_curwin == wp)
				++weight;
			}

			if (weight > (int)aall->opened[i])
			{
			    aall->opened[i] = (char_u)weight;
			    if (i == 0)
			    {
				if (aall->new_curwin != NULL)
				    aall->new_curwin->w_arg_idx =
							      aall->opened_len;
				aall->new_curwin = wp;
				aall->new_curtab = curtab;
			    }
			}
			else if (aall->keep_tabs)
			    i = aall->opened_len;

			if (wp->w_alist != aall->alist)
			{
			    // Use the current argument list for all windows
			    // containing a file from it.
			    alist_unlink(wp->w_alist);
			    wp->w_alist = aall->alist;
			    ++wp->w_alist->al_refcount;
			}
			break;
		    }
		}
	    }
	    wp->w_arg_idx = i;

	    if (i == aall->opened_len && !aall->keep_tabs)// close this window
	    {
		if (buf_hide(buf) || aall->forceit || buf->b_nwindows > 1
							|| !bufIsChanged(buf))
		{
		    // If the buffer was changed, and we would like to hide it,
		    // try autowriting.
		    if (!buf_hide(buf) && buf->b_nwindows <= 1
							 && bufIsChanged(buf))
		    {
			bufref_T    bufref;

			set_bufref(&bufref, buf);

			(void)autowrite(buf, FALSE);

			// check if autocommands removed the window
			if (!win_valid(wp) || !bufref_valid(&bufref))
			{
			    wpnext = firstwin;	// start all over...
			    continue;
			}
		    }
		    // don't close last window
		    if (ONE_WINDOW
			    && (first_tabpage->tp_next == NULL
				|| !aall->had_tab))
			aall->use_firstwin = TRUE;
		    else
		    {
			win_close(wp, !buf_hide(buf) && !bufIsChanged(buf));

			// check if autocommands removed the next window
			if (!win_valid(wpnext))
			    wpnext = firstwin;	// start all over...
		    }
		}
	    }
	}

	// Without the ":tab" modifier only do the current tab page.
	if (aall->had_tab == 0 || tpnext == NULL)
	    break;

	// check if autocommands removed the next tab page
	if (!valid_tabpage(tpnext))
	    tpnext = first_tabpage;	// start all over...

	goto_tabpage_tp(tpnext, TRUE, TRUE);
    }
    tabpage_move_disallowed--;
}

/*
 * Open upto "count" windows for the files in the argument list 'aall->alist'.
 */
    static void
arg_all_open_windows(arg_all_state_T *aall, int count)
{
    win_T	*wp;
    int		tab_drop_empty_window = FALSE;
    int		i;
    int		split_ret = OK;
    int		p_ea_save;

    // ":tab drop file" should re-use an empty window to avoid "--remote-tab"
    // leaving an empty tab page when executed locally.
    if (aall->keep_tabs && BUFEMPTY() && curbuf->b_nwindows == 1
			    && curbuf->b_ffname == NULL && !curbuf->b_changed)
    {
	aall->use_firstwin = TRUE;
	tab_drop_empty_window = TRUE;
    }

    for (i = 0; i < count && !got_int; ++i)
    {
	if (aall->alist == &global_alist && i == global_alist.al_ga.ga_len - 1)
	    arg_had_last = TRUE;
	if (aall->opened[i] > 0)
	{
	    // Move the already present window to below the current window
	    if (curwin->w_arg_idx != i)
	    {
		FOR_ALL_WINDOWS(wp)
		{
		    if (wp->w_arg_idx == i)
		    {
			if (aall->keep_tabs)
			{
			    aall->new_curwin = wp;
			    aall->new_curtab = curtab;
			}
			else if (wp->w_frame->fr_parent
				!= curwin->w_frame->fr_parent)
			{
			    emsg(_(e_window_layout_changed_unexpectedly));
			    i = count;
			    break;
			}
			else
			    win_move_after(wp, curwin);
			break;
		    }
		}
	    }
	}
	else if (split_ret == OK)
	{
	    // trigger events for tab drop
	    if (tab_drop_empty_window && i == count - 1)
		--autocmd_no_enter;
	    if (!aall->use_firstwin)		// split current window
	    {
		p_ea_save = p_ea;
		p_ea = TRUE;		// use space from all windows
		split_ret = win_split(0, WSP_ROOM | WSP_BELOW);
		p_ea = p_ea_save;
		if (split_ret == FAIL)
		    continue;
	    }
	    else    // first window: do autocmd for leaving this buffer
		--autocmd_no_leave;

	    // edit file "i"
	    curwin->w_arg_idx = i;
	    if (i == 0)
	    {
		aall->new_curwin = curwin;
		aall->new_curtab = curtab;
	    }
	    (void)do_ecmd(0, alist_name(&AARGLIST(aall->alist)[i]), NULL, NULL,
		    ECMD_ONE,
		    ((buf_hide(curwin->w_buffer)
		      || bufIsChanged(curwin->w_buffer)) ? ECMD_HIDE : 0)
		    + ECMD_OLDBUF, curwin);
	    if (tab_drop_empty_window && i == count - 1)
		++autocmd_no_enter;
	    if (aall->use_firstwin)
		++autocmd_no_leave;
	    aall->use_firstwin = FALSE;
	}
	ui_breakcheck();

	// When ":tab" was used open a new tab for a new window repeatedly.
	if (aall->had_tab > 0 && tabpage_index(NULL) <= p_tpm)
	    cmdmod.cmod_tab = 9999;
    }
}

/*
 * do_arg_all(): Open up to "count" windows, one for each argument.
 */
    static void
do_arg_all(
    int	count,
    int	forceit,		// hide buffers in current windows
    int keep_tabs)		// keep current tabs, for ":tab drop file"
{
    arg_all_state_T	aall;
    win_T		*last_curwin;
    tabpage_T		*last_curtab;
    int			prev_arglist_locked = arglist_locked;

    if (cmdwin_type != 0)
    {
	emsg(_(e_invalid_in_cmdline_window));
	return;
    }
    if (ARGCOUNT <= 0)
    {
	// Don't give an error message.  We don't want it when the ":all"
	// command is in the .vimrc.
	return;
    }
    setpcmark();

    aall.use_firstwin = FALSE;
    aall.had_tab = cmdmod.cmod_tab;
    aall.new_curwin = NULL;
    aall.new_curtab = NULL;
    aall.forceit = forceit;
    aall.keep_tabs = keep_tabs;
    aall.opened_len = ARGCOUNT;
    aall.opened = alloc_clear(aall.opened_len);
    if (aall.opened == NULL)
	return;

    // Autocommands may do anything to the argument list.  Make sure it's not
    // freed while we are working here by "locking" it.  We still have to
    // watch out for its size being changed.
    aall.alist = curwin->w_alist;
    ++aall.alist->al_refcount;
    arglist_locked = TRUE;

#ifdef FEAT_GUI
    need_mouse_correct = TRUE;
#endif

    tabpage_T *new_lu_tp = curtab;

    // Try closing all windows that are not in the argument list.
    // Also close windows that are not full width;
    // When 'hidden' or "forceit" set the buffer becomes hidden.
    // Windows that have a changed buffer and can't be hidden won't be closed.
    // When the ":tab" modifier was used do this for all tab pages.
    arg_all_close_unused_windows(&aall);

    // Open a window for files in the argument list that don't have one.
    // ARGCOUNT may change while doing this, because of autocommands.
    if (count > aall.opened_len || count <= 0)
	count = aall.opened_len;

    // Don't execute Win/Buf Enter/Leave autocommands here.
    ++autocmd_no_enter;
    ++autocmd_no_leave;
    last_curwin = curwin;
    last_curtab = curtab;
    win_enter(lastwin, FALSE);

    /*
     * Open upto "count" windows.
     */
    arg_all_open_windows(&aall, count);

    // Remove the "lock" on the argument list.
    alist_unlink(aall.alist);
    arglist_locked = prev_arglist_locked;

    --autocmd_no_enter;

    // restore last referenced tabpage's curwin
    if (last_curtab != aall.new_curtab)
    {
	if (valid_tabpage(last_curtab))
	    goto_tabpage_tp(last_curtab, TRUE, TRUE);
	if (win_valid(last_curwin))
	    win_enter(last_curwin, FALSE);
    }
    // to window with first arg
    if (valid_tabpage(aall.new_curtab))
	goto_tabpage_tp(aall.new_curtab, TRUE, TRUE);

    // Now set the last used tabpage to where we started.
    if (valid_tabpage(new_lu_tp))
	lastused_tabpage = new_lu_tp;

    if (win_valid(aall.new_curwin))
	win_enter(aall.new_curwin, FALSE);

    --autocmd_no_leave;
    vim_free(aall.opened);
}

/*
 * ":all" and ":sall".
 * Also used for ":tab drop file ..." after setting the argument list.
 */
    void
ex_all(exarg_T *eap)
{
    if (eap->addr_count == 0)
	eap->line2 = 9999;
    do_arg_all((int)eap->line2, eap->forceit, eap->cmdidx == CMD_drop);
}

/*
 * Concatenate all files in the argument list, separated by spaces, and return
 * it in one allocated string.
 * Spaces and backslashes in the file names are escaped with a backslash.
 * Returns NULL when out of memory.
 */
    char_u *
arg_all(void)
{
    int		len;
    int		idx;
    char_u	*retval = NULL;
    char_u	*p;

    // Do this loop two times:
    // first time: compute the total length
    // second time: concatenate the names
    for (;;)
    {
	len = 0;
	for (idx = 0; idx < ARGCOUNT; ++idx)
	{
	    p = alist_name(&ARGLIST[idx]);
	    if (p == NULL)
		continue;
	    if (len > 0)
	    {
		// insert a space in between names
		if (retval != NULL)
		    retval[len] = ' ';
		++len;
	    }
	    for ( ; *p != NUL; ++p)
	    {
		if (*p == ' '
#ifndef BACKSLASH_IN_FILENAME
			|| *p == '\\'
#endif
			|| *p == '`')
		{
		    // insert a backslash
		    if (retval != NULL)
			retval[len] = '\\';
		    ++len;
		}
		if (retval != NULL)
		    retval[len] = *p;
		++len;
	    }
	}

	// second time: break here
	if (retval != NULL)
	{
	    retval[len] = NUL;
	    break;
	}

	// allocate memory
	retval = alloc(len + 1);
	if (retval == NULL)
	    break;
    }

    return retval;
}

#if defined(FEAT_EVAL) || defined(PROTO)
/*
 * "argc([window id])" function
 */
    void
f_argc(typval_T *argvars, typval_T *rettv)
{
    win_T	*wp;

    if (in_vim9script() && check_for_opt_number_arg(argvars, 0) == FAIL)
	return;

    if (argvars[0].v_type == VAR_UNKNOWN)
	// use the current window
	rettv->vval.v_number = ARGCOUNT;
    else if (argvars[0].v_type == VAR_NUMBER
					   && tv_get_number(&argvars[0]) == -1)
	// use the global argument list
	rettv->vval.v_number = GARGCOUNT;
    else
    {
	// use the argument list of the specified window
	wp = find_win_by_nr_or_id(&argvars[0]);
	if (wp != NULL)
	    rettv->vval.v_number = WARGCOUNT(wp);
	else
	    rettv->vval.v_number = -1;
    }
}

/*
 * "argidx()" function
 */
    void
f_argidx(typval_T *argvars UNUSED, typval_T *rettv)
{
    rettv->vval.v_number = curwin->w_arg_idx;
}

/*
 * "arglistid()" function
 */
    void
f_arglistid(typval_T *argvars, typval_T *rettv)
{
    win_T	*wp;

    if (in_vim9script()
	    && (check_for_opt_number_arg(argvars, 0) == FAIL
		|| (argvars[0].v_type != VAR_UNKNOWN
		    && check_for_opt_number_arg(argvars, 1) == FAIL)))
	return;

    rettv->vval.v_number = -1;
    wp = find_tabwin(&argvars[0], &argvars[1], NULL);
    if (wp != NULL)
	rettv->vval.v_number = wp->w_alist->id;
}

/*
 * Get the argument list for a given window
 */
    static void
get_arglist_as_rettv(aentry_T *arglist, int argcount, typval_T *rettv)
{
    int		idx;

    if (rettv_list_alloc(rettv) == OK && arglist != NULL)
	for (idx = 0; idx < argcount; ++idx)
	    list_append_string(rettv->vval.v_list,
						alist_name(&arglist[idx]), -1);
}

/*
 * "argv(nr)" function
 */
    void
f_argv(typval_T *argvars, typval_T *rettv)
{
    int		idx;
    aentry_T	*arglist = NULL;
    int		argcount = -1;

    if (in_vim9script()
	    && (check_for_opt_number_arg(argvars, 0) == FAIL
		|| (argvars[0].v_type != VAR_UNKNOWN
		    && check_for_opt_number_arg(argvars, 1) == FAIL)))
	return;

    if (argvars[0].v_type == VAR_UNKNOWN)
    {
	get_arglist_as_rettv(ARGLIST, ARGCOUNT, rettv);
	return;
    }

    if (argvars[1].v_type == VAR_UNKNOWN)
    {
	arglist = ARGLIST;
	argcount = ARGCOUNT;
    }
    else if (argvars[1].v_type == VAR_NUMBER
	    && tv_get_number(&argvars[1]) == -1)
    {
	arglist = GARGLIST;
	argcount = GARGCOUNT;
    }
    else
    {
	win_T	*wp = find_win_by_nr_or_id(&argvars[1]);

	if (wp != NULL)
	{
	    // Use the argument list of the specified window
	    arglist = WARGLIST(wp);
	    argcount = WARGCOUNT(wp);
	}
    }

    rettv->v_type = VAR_STRING;
    rettv->vval.v_string = NULL;
    idx = tv_get_number_chk(&argvars[0], NULL);
    if (arglist != NULL && idx >= 0 && idx < argcount)
	rettv->vval.v_string = vim_strsave(alist_name(&arglist[idx]));
    else if (idx == -1)
	get_arglist_as_rettv(arglist, argcount, rettv);
}
#endif