summary refs log tree commit diff
path: root/Src/options.c
blob: a70d4ff11ecc12c5a3f15488c757f7193d212a1c (plain) (blame)
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
/*
 * options.c - shell options
 *
 * This file is part of zsh, the Z shell.
 *
 * Copyright (c) 1992-1997 Paul Falstad
 * All rights reserved.
 *
 * Permission is hereby granted, without written agreement and without
 * license or royalty fees, to use, copy, modify, and distribute this
 * software and to distribute modified versions of this software for any
 * purpose, provided that the above copyright notice and the following
 * two paragraphs appear in all copies of this software.
 *
 * In no event shall Paul Falstad or the Zsh Development Group be liable
 * to any party for direct, indirect, special, incidental, or consequential
 * damages arising out of the use of this software and its documentation,
 * even if Paul Falstad and the Zsh Development Group have been advised of
 * the possibility of such damage.
 *
 * Paul Falstad and the Zsh Development Group specifically disclaim any
 * warranties, including, but not limited to, the implied warranties of
 * merchantability and fitness for a particular purpose.  The software
 * provided hereunder is on an "as is" basis, and Paul Falstad and the
 * Zsh Development Group have no obligation to provide maintenance,
 * support, updates, enhancements, or modifications.
 *
 */

#include "zsh.mdh"
#include "options.pro"

/* current emulation (used to decide which set of option letters is used) */

/**/
mod_export int emulation;
 
/* current sticky emulation:  0 means none */

/**/
mod_export int sticky_emulation;

/* the options; e.g. if opts[SHGLOB] != 0, SH_GLOB is turned on */
 
/**/
mod_export char opts[OPT_SIZE];
 
/* Option name hash table */

/**/
mod_export HashTable optiontab;
 
/* The canonical option name table */

#define OPT_CSH		EMULATE_CSH
#define OPT_KSH		EMULATE_KSH
#define OPT_SH		EMULATE_SH
#define OPT_ZSH		EMULATE_ZSH

#define OPT_ALL		(OPT_CSH|OPT_KSH|OPT_SH|OPT_ZSH)
#define OPT_BOURNE	(OPT_KSH|OPT_SH)
#define OPT_BSHELL	(OPT_KSH|OPT_SH|OPT_ZSH)
#define OPT_NONBOURNE	(OPT_ALL & ~OPT_BOURNE)
#define OPT_NONZSH	(OPT_ALL & ~OPT_ZSH)

/* option is relevant to emulation */
#define OPT_EMULATE	(EMULATE_UNUSED)
/* option should never be set by emulate() */
#define OPT_SPECIAL	(EMULATE_UNUSED<<1)
/* option is an alias to an other option */
#define OPT_ALIAS	(EMULATE_UNUSED<<2)

#define defset(X) (!!((X)->node.flags & emulation))

/*
 * Note that option names should usually be fewer than 20 characters long
 * to avoid formatting problems.
 */
static struct optname optns[] = {
{{NULL, "aliases",	      OPT_EMULATE|OPT_ALL},	 ALIASESOPT},
{{NULL, "allexport",	      OPT_EMULATE},		 ALLEXPORT},
{{NULL, "alwayslastprompt",   OPT_ALL},			 ALWAYSLASTPROMPT},
{{NULL, "alwaystoend",	      0},			 ALWAYSTOEND},
{{NULL, "appendhistory",      OPT_ALL},			 APPENDHISTORY},
{{NULL, "autocd",	      OPT_EMULATE},		 AUTOCD},
{{NULL, "autocontinue",	      0},			 AUTOCONTINUE},
{{NULL, "autolist",	      OPT_ALL},			 AUTOLIST},
{{NULL, "automenu",	      OPT_ALL},			 AUTOMENU},
{{NULL, "autonamedirs",	      0},			 AUTONAMEDIRS},
{{NULL, "autoparamkeys",      OPT_ALL},			 AUTOPARAMKEYS},
{{NULL, "autoparamslash",     OPT_ALL},			 AUTOPARAMSLASH},
{{NULL, "autopushd",	      0},			 AUTOPUSHD},
{{NULL, "autoremoveslash",    OPT_ALL},			 AUTOREMOVESLASH},
{{NULL, "autoresume",	      0},			 AUTORESUME},
{{NULL, "badpattern",	      OPT_EMULATE|OPT_NONBOURNE},BADPATTERN},
{{NULL, "banghist",	      OPT_NONBOURNE},		 BANGHIST},
{{NULL, "bareglobqual",       OPT_EMULATE|OPT_ZSH},      BAREGLOBQUAL},
{{NULL, "bashautolist",	      0},                        BASHAUTOLIST},
{{NULL, "bashrematch",	      0},			 BASHREMATCH},
{{NULL, "beep",		      OPT_ALL},			 BEEP},
{{NULL, "bgnice",	      OPT_EMULATE|OPT_NONBOURNE},BGNICE},
{{NULL, "braceccl",	      OPT_EMULATE},		 BRACECCL},
{{NULL, "bsdecho",	      OPT_EMULATE|OPT_SH},	 BSDECHO},
{{NULL, "caseglob",	      OPT_ALL},			 CASEGLOB},
{{NULL, "casematch",	      OPT_ALL},			 CASEMATCH},
{{NULL, "cbases",	      0},			 CBASES},
{{NULL, "cprecedences",	      OPT_EMULATE|OPT_NONZSH},	 CPRECEDENCES},
{{NULL, "cdablevars",	      OPT_EMULATE},		 CDABLEVARS},
{{NULL, "chasedots",	      OPT_EMULATE},		 CHASEDOTS},
{{NULL, "chaselinks",	      OPT_EMULATE},		 CHASELINKS},
{{NULL, "checkjobs",	      OPT_EMULATE|OPT_ZSH},	 CHECKJOBS},
{{NULL, "clobber",	      OPT_EMULATE|OPT_ALL},	 CLOBBER},
{{NULL, "combiningchars",     0},			 COMBININGCHARS},
{{NULL, "completealiases",    0},			 COMPLETEALIASES},
{{NULL, "completeinword",     0},			 COMPLETEINWORD},
{{NULL, "correct",	      0},			 CORRECT},
{{NULL, "correctall",	      0},			 CORRECTALL},
{{NULL, "cshjunkiehistory",   OPT_EMULATE|OPT_CSH},	 CSHJUNKIEHISTORY},
{{NULL, "cshjunkieloops",     OPT_EMULATE|OPT_CSH},	 CSHJUNKIELOOPS},
{{NULL, "cshjunkiequotes",    OPT_EMULATE|OPT_CSH},	 CSHJUNKIEQUOTES},
{{NULL, "cshnullcmd",	      OPT_EMULATE|OPT_CSH},	 CSHNULLCMD},
{{NULL, "cshnullglob",	      OPT_EMULATE|OPT_CSH},	 CSHNULLGLOB},
{{NULL, "debugbeforecmd",     OPT_ALL},			 DEBUGBEFORECMD},
{{NULL, "emacs",	      0},			 EMACSMODE},
{{NULL, "equals",	      OPT_EMULATE|OPT_ZSH},	 EQUALS},
{{NULL, "errexit",	      OPT_EMULATE},		 ERREXIT},
{{NULL, "errreturn",	      OPT_EMULATE},		 ERRRETURN},
{{NULL, "exec",		      OPT_ALL},			 EXECOPT},
{{NULL, "extendedglob",	      OPT_EMULATE},		 EXTENDEDGLOB},
{{NULL, "extendedhistory",    OPT_CSH},			 EXTENDEDHISTORY},
{{NULL, "evallineno",	      OPT_EMULATE|OPT_ZSH},	 EVALLINENO},
{{NULL, "flowcontrol",	      OPT_ALL},			 FLOWCONTROL},
{{NULL, "functionargzero",    OPT_EMULATE|OPT_NONBOURNE},FUNCTIONARGZERO},
{{NULL, "glob",		      OPT_EMULATE|OPT_ALL},	 GLOBOPT},
{{NULL, "globalexport",       OPT_EMULATE|OPT_ZSH},	 GLOBALEXPORT},
{{NULL, "globalrcs",          OPT_ALL},			 GLOBALRCS},
{{NULL, "globassign",	      OPT_EMULATE|OPT_CSH},	 GLOBASSIGN},
{{NULL, "globcomplete",	      0},			 GLOBCOMPLETE},
{{NULL, "globdots",	      OPT_EMULATE},		 GLOBDOTS},
{{NULL, "globsubst",	      OPT_EMULATE|OPT_NONZSH},	 GLOBSUBST},
{{NULL, "hashcmds",	      OPT_ALL},			 HASHCMDS},
{{NULL, "hashdirs",	      OPT_ALL},			 HASHDIRS},
{{NULL, "hashlistall",	      OPT_ALL},			 HASHLISTALL},
{{NULL, "histallowclobber",   0},			 HISTALLOWCLOBBER},
{{NULL, "histbeep",	      OPT_ALL},			 HISTBEEP},
{{NULL, "histexpiredupsfirst",0},			 HISTEXPIREDUPSFIRST},
{{NULL, "histfcntllock",      0},			 HISTFCNTLLOCK},
{{NULL, "histfindnodups",     0},			 HISTFINDNODUPS},
{{NULL, "histignorealldups",  0},			 HISTIGNOREALLDUPS},
{{NULL, "histignoredups",     0},			 HISTIGNOREDUPS},
{{NULL, "histignorespace",    0},			 HISTIGNORESPACE},
{{NULL, "histlexwords",	      0},			 HISTLEXWORDS},
{{NULL, "histnofunctions",    0},			 HISTNOFUNCTIONS},
{{NULL, "histnostore",	      0},			 HISTNOSTORE},
{{NULL, "histsubstpattern",   OPT_EMULATE},              HISTSUBSTPATTERN},
{{NULL, "histreduceblanks",   0},			 HISTREDUCEBLANKS},
{{NULL, "histsavebycopy",     OPT_ALL},			 HISTSAVEBYCOPY},
{{NULL, "histsavenodups",     0},			 HISTSAVENODUPS},
{{NULL, "histverify",	      0},			 HISTVERIFY},
{{NULL, "hup",		      OPT_EMULATE|OPT_ZSH},	 HUP},
{{NULL, "ignorebraces",	      OPT_EMULATE|OPT_SH},	 IGNOREBRACES},
{{NULL, "ignoreclosebraces",  0},			 IGNORECLOSEBRACES},
{{NULL, "ignoreeof",	      0},			 IGNOREEOF},
{{NULL, "incappendhistory",   0},			 INCAPPENDHISTORY},
{{NULL, "interactive",	      OPT_SPECIAL},		 INTERACTIVE},
{{NULL, "interactivecomments",OPT_BOURNE},		 INTERACTIVECOMMENTS},
{{NULL, "ksharrays",	      OPT_EMULATE|OPT_BOURNE},	 KSHARRAYS},
{{NULL, "kshautoload",	      OPT_EMULATE|OPT_BOURNE},	 KSHAUTOLOAD},
{{NULL, "kshglob",	      OPT_EMULATE|OPT_KSH},	 KSHGLOB},
{{NULL, "kshoptionprint",     OPT_EMULATE|OPT_KSH},	 KSHOPTIONPRINT},
{{NULL, "kshtypeset",	      OPT_EMULATE|OPT_KSH},	 KSHTYPESET},
{{NULL, "kshzerosubscript",   0},			 KSHZEROSUBSCRIPT},
{{NULL, "listambiguous",      OPT_ALL},			 LISTAMBIGUOUS},
{{NULL, "listbeep",	      OPT_ALL},			 LISTBEEP},
{{NULL, "listpacked",	      0},			 LISTPACKED},
{{NULL, "listrowsfirst",      0},			 LISTROWSFIRST},
{{NULL, "listtypes",	      OPT_ALL},			 LISTTYPES},
{{NULL, "localoptions",	      OPT_EMULATE|OPT_KSH},	 LOCALOPTIONS},
{{NULL, "localtraps",	      OPT_EMULATE|OPT_KSH},	 LOCALTRAPS},
{{NULL, "login",	      OPT_SPECIAL},		 LOGINSHELL},
{{NULL, "longlistjobs",	      0},			 LONGLISTJOBS},
{{NULL, "magicequalsubst",    OPT_EMULATE},		 MAGICEQUALSUBST},
{{NULL, "mailwarning",	      0},			 MAILWARNING},
{{NULL, "markdirs",	      0},			 MARKDIRS},
{{NULL, "menucomplete",	      0},			 MENUCOMPLETE},
{{NULL, "monitor",	      OPT_SPECIAL},		 MONITOR},
{{NULL, "multibyte",
#ifdef MULTIBYTE_SUPPORT
			      OPT_EMULATE|OPT_ZSH|OPT_CSH|OPT_KSH
#else
			      0
#endif
			      },			 MULTIBYTE},
{{NULL, "multifuncdef",	      OPT_EMULATE|OPT_ZSH},	 MULTIFUNCDEF},
{{NULL, "multios",	      OPT_EMULATE|OPT_ZSH},	 MULTIOS},
{{NULL, "nomatch",	      OPT_EMULATE|OPT_NONBOURNE},NOMATCH},
{{NULL, "notify",	      OPT_ZSH},			 NOTIFY},
{{NULL, "nullglob",	      OPT_EMULATE},		 NULLGLOB},
{{NULL, "numericglobsort",    OPT_EMULATE},		 NUMERICGLOBSORT},
{{NULL, "octalzeroes",        OPT_EMULATE|OPT_SH},	 OCTALZEROES},
{{NULL, "overstrike",	      0},			 OVERSTRIKE},
{{NULL, "pathdirs",	      OPT_EMULATE},		 PATHDIRS},
{{NULL, "pathscript",	      OPT_EMULATE|OPT_BOURNE},	 PATHSCRIPT},
{{NULL, "posixaliases",       OPT_EMULATE|OPT_BOURNE},	 POSIXALIASES},
{{NULL, "posixbuiltins",      OPT_EMULATE|OPT_BOURNE},	 POSIXBUILTINS},
{{NULL, "posixcd",            OPT_EMULATE|OPT_BOURNE},	 POSIXCD},
{{NULL, "posixidentifiers",   OPT_EMULATE|OPT_BOURNE},	 POSIXIDENTIFIERS},
{{NULL, "posixjobs",          OPT_EMULATE|OPT_BOURNE},	 POSIXJOBS},
{{NULL, "posixstrings",       OPT_EMULATE|OPT_BOURNE},   POSIXSTRINGS},
{{NULL, "posixtraps",         OPT_EMULATE|OPT_BOURNE},	 POSIXTRAPS},
{{NULL, "printeightbit",      0},                        PRINTEIGHTBIT},
{{NULL, "printexitvalue",     0},			 PRINTEXITVALUE},
{{NULL, "privileged",	      OPT_SPECIAL},		 PRIVILEGED},
{{NULL, "promptbang",	      OPT_KSH},			 PROMPTBANG},
{{NULL, "promptcr",	      OPT_ALL},			 PROMPTCR},
{{NULL, "promptpercent",      OPT_NONBOURNE},		 PROMPTPERCENT},
{{NULL, "promptsp",	      OPT_ALL},			 PROMPTSP},
{{NULL, "promptsubst",	      OPT_BOURNE},		 PROMPTSUBST},
{{NULL, "pushdignoredups",    OPT_EMULATE},		 PUSHDIGNOREDUPS},
{{NULL, "pushdminus",	      OPT_EMULATE},		 PUSHDMINUS},
{{NULL, "pushdsilent",	      0},			 PUSHDSILENT},
{{NULL, "pushdtohome",	      OPT_EMULATE},		 PUSHDTOHOME},
{{NULL, "rcexpandparam",      OPT_EMULATE},		 RCEXPANDPARAM},
{{NULL, "rcquotes",	      OPT_EMULATE},		 RCQUOTES},
{{NULL, "rcs",		      OPT_ALL},			 RCS},
{{NULL, "recexact",	      0},			 RECEXACT},
{{NULL, "rematchpcre",	      0},			 REMATCHPCRE},
{{NULL, "restricted",	      OPT_SPECIAL},		 RESTRICTED},
{{NULL, "rmstarsilent",	      OPT_BOURNE},		 RMSTARSILENT},
{{NULL, "rmstarwait",	      0},			 RMSTARWAIT},
{{NULL, "sharehistory",	      OPT_KSH},			 SHAREHISTORY},
{{NULL, "shfileexpansion",    OPT_EMULATE|OPT_BOURNE},	 SHFILEEXPANSION},
{{NULL, "shglob",	      OPT_EMULATE|OPT_BOURNE},	 SHGLOB},
{{NULL, "shinstdin",	      OPT_SPECIAL},		 SHINSTDIN},
{{NULL, "shnullcmd",          OPT_EMULATE|OPT_BOURNE},	 SHNULLCMD},
{{NULL, "shoptionletters",    OPT_EMULATE|OPT_BOURNE},	 SHOPTIONLETTERS},
{{NULL, "shortloops",	      OPT_EMULATE|OPT_NONBOURNE},SHORTLOOPS},
{{NULL, "shwordsplit",	      OPT_EMULATE|OPT_BOURNE},	 SHWORDSPLIT},
{{NULL, "singlecommand",      OPT_SPECIAL},		 SINGLECOMMAND},
{{NULL, "singlelinezle",      OPT_KSH},			 SINGLELINEZLE},
{{NULL, "sourcetrace",        0},			 SOURCETRACE},
{{NULL, "sunkeyboardhack",    0},			 SUNKEYBOARDHACK},
{{NULL, "transientrprompt",   0},			 TRANSIENTRPROMPT},
{{NULL, "trapsasync",	      0},			 TRAPSASYNC},
{{NULL, "typesetsilent",      OPT_EMULATE|OPT_BOURNE},	 TYPESETSILENT},
{{NULL, "unset",	      OPT_EMULATE|OPT_BSHELL},	 UNSET},
{{NULL, "verbose",	      0},			 VERBOSE},
{{NULL, "vi",		      0},			 VIMODE},
{{NULL, "warncreateglobal",   0},			 WARNCREATEGLOBAL},
{{NULL, "xtrace",	      0},			 XTRACE},
{{NULL, "zle",		      OPT_SPECIAL},		 USEZLE},
{{NULL, "braceexpand",	      OPT_ALIAS}, /* ksh/bash */ -IGNOREBRACES},
{{NULL, "dotglob",	      OPT_ALIAS}, /* bash */	 GLOBDOTS},
{{NULL, "hashall",	      OPT_ALIAS}, /* bash */	 HASHCMDS},
{{NULL, "histappend",	      OPT_ALIAS}, /* bash */	 APPENDHISTORY},
{{NULL, "histexpand",	      OPT_ALIAS}, /* bash */	 BANGHIST},
{{NULL, "log",		      OPT_ALIAS}, /* ksh */	 -HISTNOFUNCTIONS},
{{NULL, "mailwarn",	      OPT_ALIAS}, /* bash */	 MAILWARNING},
{{NULL, "onecmd",	      OPT_ALIAS}, /* bash */	 SINGLECOMMAND},
{{NULL, "physical",	      OPT_ALIAS}, /* ksh/bash */ CHASELINKS},
{{NULL, "promptvars",	      OPT_ALIAS}, /* bash */	 PROMPTSUBST},
{{NULL, "stdin",	      OPT_ALIAS}, /* ksh */	 SHINSTDIN},
{{NULL, "trackall",	      OPT_ALIAS}, /* ksh */	 HASHCMDS},
{{NULL, "dvorak",	      0},			 DVORAK},
{{NULL, NULL, 0}, 0}
};

/* Option letters */

#define optletters (isset(SHOPTIONLETTERS) ? kshletters : zshletters)

#define FIRST_OPT '0'
#define LAST_OPT 'y'

static short zshletters[LAST_OPT - FIRST_OPT + 1] = {
    /* 0 */  CORRECT,
    /* 1 */  PRINTEXITVALUE,
    /* 2 */ -BADPATTERN,
    /* 3 */ -NOMATCH,
    /* 4 */  GLOBDOTS,
    /* 5 */  NOTIFY,
    /* 6 */  BGNICE,
    /* 7 */  IGNOREEOF,
    /* 8 */  MARKDIRS,
    /* 9 */  AUTOLIST,
    /* : */  0,
    /* ; */  0,
    /* < */  0,
    /* = */  0,
    /* > */  0,
    /* ? */  0,
    /* @ */  0,
    /* A */  0,			/* use with set for arrays */
    /* B */ -BEEP,
    /* C */ -CLOBBER,
    /* D */  PUSHDTOHOME,
    /* E */  PUSHDSILENT,
    /* F */ -GLOBOPT,
    /* G */  NULLGLOB,
    /* H */  RMSTARSILENT,
    /* I */  IGNOREBRACES,
    /* J */  AUTOCD,
    /* K */ -BANGHIST,
    /* L */  SUNKEYBOARDHACK,
    /* M */  SINGLELINEZLE,
    /* N */  AUTOPUSHD,
    /* O */  CORRECTALL,
    /* P */  RCEXPANDPARAM,
    /* Q */  PATHDIRS,
    /* R */  LONGLISTJOBS,
    /* S */  RECEXACT,
    /* T */  CDABLEVARS,
    /* U */  MAILWARNING,
    /* V */ -PROMPTCR,
    /* W */  AUTORESUME,
    /* X */  LISTTYPES,
    /* Y */  MENUCOMPLETE,
    /* Z */  USEZLE,
    /* [ */  0,
    /* \ */  0,
    /* ] */  0,
    /* ^ */  0,
    /* _ */  0,
    /* ` */  0,
    /* a */  ALLEXPORT,
    /* b */  0,			/* in non-Bourne shells, end of options */
    /* c */  0,			/* command follows */
    /* d */ -GLOBALRCS,
    /* e */  ERREXIT,
    /* f */ -RCS,
    /* g */  HISTIGNORESPACE,
    /* h */  HISTIGNOREDUPS,
    /* i */  INTERACTIVE,
    /* j */  0,
    /* k */  INTERACTIVECOMMENTS,
    /* l */  LOGINSHELL,
    /* m */  MONITOR,
    /* n */ -EXECOPT,
    /* o */  0,			/* long option name follows */
    /* p */  PRIVILEGED,
    /* q */  0,
    /* r */  RESTRICTED,
    /* s */  SHINSTDIN,
    /* t */  SINGLECOMMAND,
    /* u */ -UNSET,
    /* v */  VERBOSE,
    /* w */  CHASELINKS,
    /* x */  XTRACE,
    /* y */  SHWORDSPLIT,
};

static short kshletters[LAST_OPT - FIRST_OPT + 1] = {
    /* 0 */  0,
    /* 1 */  0,
    /* 2 */  0,
    /* 3 */  0,
    /* 4 */  0,
    /* 5 */  0,
    /* 6 */  0,
    /* 7 */  0,
    /* 8 */  0,
    /* 9 */  0,
    /* : */  0,
    /* ; */  0,
    /* < */  0,
    /* = */  0,
    /* > */  0,
    /* ? */  0,
    /* @ */  0,
    /* A */  0,
    /* B */  0,
    /* C */ -CLOBBER,
    /* D */  0,
    /* E */  0,
    /* F */  0,
    /* G */  0,
    /* H */  0,
    /* I */  0,
    /* J */  0,
    /* K */  0,
    /* L */  0,
    /* M */  0,
    /* N */  0,
    /* O */  0,
    /* P */  0,
    /* Q */  0,
    /* R */  0,
    /* S */  0,
    /* T */  TRAPSASYNC,
    /* U */  0,
    /* V */  0,
    /* W */  0,
    /* X */  MARKDIRS,
    /* Y */  0,
    /* Z */  0,
    /* [ */  0,
    /* \ */  0,
    /* ] */  0,
    /* ^ */  0,
    /* _ */  0,
    /* ` */  0,
    /* a */  ALLEXPORT,
    /* b */  NOTIFY,
    /* c */  0,
    /* d */  0,
    /* e */  ERREXIT,
    /* f */ -GLOBOPT,
    /* g */  0,
    /* h */  0,
    /* i */  INTERACTIVE,
    /* j */  0,
    /* k */  0,
    /* l */  LOGINSHELL,
    /* m */  MONITOR,
    /* n */ -EXECOPT,
    /* o */  0,
    /* p */  PRIVILEGED,
    /* q */  0,
    /* r */  RESTRICTED,
    /* s */  SHINSTDIN,
    /* t */  SINGLECOMMAND,
    /* u */ -UNSET,
    /* v */  VERBOSE,
    /* w */  0,
    /* x */  XTRACE,
    /* y */  0,
};

/* Initialisation of the option name hash table */

/**/
static void
printoptionnode(HashNode hn, int set)
{
    Optname on = (Optname) hn;
    int optno = on->optno;

    if (optno < 0)
	optno = -optno;
    if (isset(KSHOPTIONPRINT)) {
	if (defset(on))
	    printf("no%-19s %s\n", on->node.nam, isset(optno) ? "off" : "on");
	else
	    printf("%-21s %s\n", on->node.nam, isset(optno) ? "on" : "off");
    } else if (set == (isset(optno) ^ defset(on))) {
	if (set ^ isset(optno))
	    fputs("no", stdout);
	puts(on->node.nam);
    }
}

/**/
void
createoptiontable(void)
{
    Optname on;

    optiontab = newhashtable(101, "optiontab", NULL);

    optiontab->hash        = hasher;
    optiontab->emptytable  = NULL;
    optiontab->filltable   = NULL;
    optiontab->cmpnodes    = strcmp;
    optiontab->addnode     = addhashnode;
    optiontab->getnode     = gethashnode;
    optiontab->getnode2    = gethashnode2;
    optiontab->removenode  = NULL;
    optiontab->disablenode = disablehashnode;
    optiontab->enablenode  = enablehashnode;
    optiontab->freenode    = NULL;
    optiontab->printnode   = printoptionnode;

    for (on = optns; on->node.nam; on++)
	optiontab->addnode(optiontab, on->node.nam, on);
}

/* Setting of default options */

/**/
static void
setemulate(HashNode hn, int fully)
{
    Optname on = (Optname) hn;

    /* Set options: each non-special option is set according to the *
     * current emulation mode if either it is considered relevant   *
     * to emulation or we are doing a full emulation (as indicated  *
     * by the `fully' parameter).                                   */
    if (!(on->node.flags & OPT_ALIAS) &&
	((fully && !(on->node.flags & OPT_SPECIAL)) ||
	 (on->node.flags & OPT_EMULATE)))
	opts[on->optno] = defset(on);
}

/**/
void
installemulation(void)
{
    scanhashtable(optiontab, 0, 0, 0, setemulate,
		  !!(emulation & EMULATE_FULLY));
}

/**/
void
emulate(const char *zsh_name, int fully)
{
    char ch = *zsh_name;

    if (ch == 'r')
	ch = zsh_name[1];

    /* Work out the new emulation mode */
    if (ch == 'c')
	emulation = EMULATE_CSH;
    else if (ch == 'k')
	emulation = EMULATE_KSH;
    else if (ch == 's' || ch == 'b')
	emulation = EMULATE_SH;
    else
	emulation = EMULATE_ZSH;

    if (fully)
	emulation |= EMULATE_FULLY;
    installemulation();
}

/* setopt, unsetopt */

/**/
static void
setoption(HashNode hn, int value)
{
    dosetopt(((Optname) hn)->optno, value, 0);
}

/**/
int
bin_setopt(char *nam, char **args, UNUSED(Options ops), int isun)
{
    int action, optno, match = 0;

    /* With no arguments or options, display options. */
    if (!*args) {
	scanhashtable(optiontab, 1, 0, OPT_ALIAS, optiontab->printnode, !isun);
	return 0;
    }

    /* loop through command line options (begins with "-" or "+") */
    while (*args && (**args == '-' || **args == '+')) {
	action = (**args == '-') ^ isun;
	if(!args[0][1])
	    *args = "--";
	while (*++*args) {
	    if(**args == Meta)
		*++*args ^= 32;
	    /* The pseudo-option `--' signifies the end of options. */
	    if (**args == '-') {
		args++;
		goto doneoptions;
	    } else if (**args == 'o') {
		if (!*++*args)
		    args++;
		if (!*args) {
		    zwarnnam(nam, "string expected after -o");
		    inittyptab();
		    return 1;
		}
		if(!(optno = optlookup(*args)))
		    zwarnnam(nam, "no such option: %s", *args);
		else if(dosetopt(optno, action, 0))
		    zwarnnam(nam, "can't change option: %s", *args);
		break;
	    } else if(**args == 'm') {
		match = 1;
	    } else {
	    	if (!(optno = optlookupc(**args)))
		    zwarnnam(nam, "bad option: -%c", **args);
		else if(dosetopt(optno, action, 0))
		    zwarnnam(nam, "can't change option: -%c", **args);
	    }
	}
	args++;
    }
    doneoptions:

    if (!match) {
	/* Not globbing the arguments -- arguments are simply option names. */
	while (*args) {
	    if(!(optno = optlookup(*args++)))
		zwarnnam(nam, "no such option: %s", args[-1]);
	    else if(dosetopt(optno, !isun, 0))
		zwarnnam(nam, "can't change option: %s", args[-1]);
	}
    } else {
	/* Globbing option (-m) set. */
	while (*args) {
	    Patprog pprog;
	    char *s, *t;

	    t = s = dupstring(*args);
	    while (*t)
		if (*t == '_')
		    chuck(t);
		else {
		    /* See comment in optlookup() */
		    if (*t >= 'A' && *t <= 'Z')
			*t = (*t - 'A') + 'a';
		    t++;
		}

	    /* Expand the current arg. */
	    tokenize(s);
	    if (!(pprog = patcompile(s, PAT_STATIC, NULL))) {
		zwarnnam(nam, "bad pattern: %s", *args);
		continue;
	    }
	    /* Loop over expansions. */
	    scanmatchtable(optiontab, pprog, 0, 0, OPT_ALIAS,
			   setoption, !isun);
	    args++;
	}
    }
    inittyptab();
    return 0;
}

/* Identify an option name */

/**/
mod_export int
optlookup(char const *name)
{
    char *s, *t;
    Optname n;

    s = t = dupstring(name);

    /* exorcise underscores, and change to lowercase */
    while (*t)
	if (*t == '_')
	    chuck(t);
	else {
	    /*
	     * Some locales (in particular tr_TR.UTF-8) may
	     * have non-standard mappings of ASCII characters,
	     * so be careful.  Option names must be ASCII so
	     * we don't need to be too clever.
	     */
	    if (*t >= 'A' && *t <= 'Z')
		*t = (*t - 'A') + 'a';
	    t++;
	}

    /* look up name in the table */
    if (s[0] == 'n' && s[1] == 'o' &&
	(n = (Optname) optiontab->getnode(optiontab, s + 2))) {
	return -n->optno;
    } else if ((n = (Optname) optiontab->getnode(optiontab, s)))
	return n->optno;
    else
	return OPT_INVALID;
}

/* Identify an option letter */

/**/
int
optlookupc(char c)
{
    if(c < FIRST_OPT || c > LAST_OPT)
	return 0;

    return optletters[c - FIRST_OPT];
}

/**/
static void
restrictparam(char *nam)
{
    Param pm = (Param) paramtab->getnode(paramtab, nam);

    if (pm) {
	pm->node.flags |= PM_SPECIAL | PM_RESTRICTED;
	return;
    }
    createparam(nam, PM_SCALAR | PM_UNSET | PM_SPECIAL | PM_RESTRICTED);
}

/* list of restricted parameters which are not otherwise special */
static char *rparams[] = {
    "SHELL", "HISTFILE", "LD_LIBRARY_PATH", "LD_AOUT_LIBRARY_PATH",
    "LD_PRELOAD", "LD_AOUT_PRELOAD", NULL
};

/* Set or unset an option, as a result of user request.  The option *
 * number may be negative, indicating that the sense is reversed    *
 * from the usual meaning of the option.                            */

/**/
mod_export int
dosetopt(int optno, int value, int force)
{
    if(!optno)
	return -1;
    if(optno < 0) {
	optno = -optno;
	value = !value;
    }
    if (optno == RESTRICTED) {
	if (isset(RESTRICTED))
	    return value ? 0 : -1;
	if (value) {
	    char **s;

	    for (s = rparams; *s; s++)
		restrictparam(*s);
	}
    } else if(!force && optno == EXECOPT && !value && interact) {
	/* cannot set noexec when interactive */
	return -1;
    } else if(!force && (optno == INTERACTIVE || optno == SHINSTDIN ||
	    optno == SINGLECOMMAND)) {
	if (opts[optno] == value)
	    return 0;
	/* it is not permitted to change the value of these options */
	return -1;
    } else if(!force && optno == USEZLE && value) {
	/* we require a terminal in order to use ZLE */
	if(!interact || SHTTY == -1 || !shout)
	    return -1;
    } else if(optno == PRIVILEGED && !value) {
	/* unsetting PRIVILEGED causes the shell to make itself unprivileged */
#ifdef HAVE_SETUID
	setuid(getuid());
	setgid(getgid());
#endif /* HAVE_SETUID */
#ifdef JOB_CONTROL
    } else if (!force && optno == MONITOR && value) {
	if (opts[optno] == value)
	    return 0;
	if (SHTTY != -1) {
	    origpgrp = GETPGRP();
	    acquire_pgrp();
	} else
	    return -1;
#else
    } else if(optno == MONITOR && value) {
	    return -1;
#endif /* not JOB_CONTROL */
#ifdef GETPWNAM_FAKED
    } else if(optno == CDABLEVARS && value) {
	    return -1;
#endif /* GETPWNAM_FAKED */
    } else if ((optno == EMACSMODE || optno == VIMODE) && value) {
	zleentry(ZLE_CMD_SET_KEYMAP, optno);
	opts[(optno == EMACSMODE) ? VIMODE : EMACSMODE] = 0;
    } else if (optno == SUNKEYBOARDHACK) {
	/* for backward compatibility */
	keyboardhackchar = (value ? '`' : '\0');
    }
    opts[optno] = value;
    if (optno == BANGHIST || optno == SHINSTDIN)
	inittyptab();
    return 0;
}

/* Function to get value for special parameter `-' */

/**/
char *
dashgetfn(UNUSED(Param pm))
{
    static char buf[LAST_OPT - FIRST_OPT + 2];
    char *val = buf;
    int i;

    for(i = 0; i <= LAST_OPT - FIRST_OPT; i++) {
	int optno = optletters[i];
	if(optno && ((optno > 0) ? isset(optno) : unset(-optno)))
	    *val++ = FIRST_OPT + i;
    }
    *val = '\0';
    return buf;
}

/* print options for set -o/+o */

/**/
void
printoptionstates(int hadplus)
{
    scanhashtable(optiontab, 1, 0, OPT_ALIAS, printoptionnodestate, hadplus);
}

/**/
static void
printoptionnodestate(HashNode hn, int hadplus)
{
    Optname on = (Optname) hn;
    int optno = on->optno;

    if (hadplus) {
        if (defset(on) != isset(optno))
	    printf("set -o %s%s\n", defset(on) ? "no" : "", on->node.nam);
    } else {
	if (defset(on))
	    printf("no%-19s %s\n", on->node.nam, isset(optno) ? "off" : "on");
	else
	    printf("%-21s %s\n", on->node.nam, isset(optno) ? "on" : "off");
    }
}

/* Print option list for --help */

/**/
void
printoptionlist(void)
{
    short *lp;
    char c;

    printf("\nNamed options:\n");
    scanhashtable(optiontab, 1, 0, OPT_ALIAS, printoptionlist_printoption, 0);
    printf("\nOption aliases:\n");
    scanhashtable(optiontab, 1, OPT_ALIAS, 0, printoptionlist_printoption, 0);
    printf("\nOption letters:\n");
    for(lp = optletters, c = FIRST_OPT; c <= LAST_OPT; lp++, c++) {
	if(!*lp)
	    continue;
	printf("  -%c  ", c);
	printoptionlist_printequiv(*lp);
    }
}

/**/
static void
printoptionlist_printoption(HashNode hn, UNUSED(int ignored))
{
    Optname on = (Optname) hn;

    if(on->node.flags & OPT_ALIAS) {
	printf("  --%-19s  ", on->node.nam);
	printoptionlist_printequiv(on->optno);
    } else
	printf("  --%s\n", on->node.nam);
}

/**/
static void
printoptionlist_printequiv(int optno)
{
    int isneg = optno < 0;

    optno *= (isneg ? -1 : 1);
    printf("  equivalent to --%s%s\n", isneg ? "no-" : "", optns[optno-1].node.nam);
}