summaryrefslogtreecommitdiff
path: root/lisp/progmodes/ps-mode.el
blob: 203b4575a8d64c96867d1dc32fa52f8e71a57254 (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
;;; ps-mode.el --- PostScript mode for GNU Emacs

;; Copyright (C) 1999, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008
;; Free Software Foundation, Inc.

;; Author:     Peter Kleiweg <p.c.j.kleiweg@rug.nl>
;; Maintainer: Peter Kleiweg <p.c.j.kleiweg@rug.nl>
;; Created:    20 Aug 1997
;; Version:    1.1h, 16 Jun 2005
;; Keywords:   PostScript, languages

;; This file is part of GNU Emacs.

;; GNU Emacs is free software; you can redistribute it and/or modify
;; it under the terms of the GNU General Public License as published by
;; the Free Software Foundation; either version 3, or (at your option)
;; any later version.

;; GNU Emacs is distributed in the hope that it will be useful,
;; but WITHOUT ANY WARRANTY; without even the implied warranty of
;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
;; GNU General Public License for more details.

;; You should have received a copy of the GNU General Public License
;; along with GNU Emacs; see the file COPYING.  If not, write to the
;; Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
;; Boston, MA 02110-1301, USA.

;;; Commentary:


;;; Code:

(defconst ps-mode-version "1.1h, 16 Jun 2005")
(defconst ps-mode-maintainer-address "Peter Kleiweg <p.c.j.kleiweg@rug.nl>")

(require 'easymenu)

;; Define core `PostScript' group.
(defgroup PostScript nil
  "PostScript mode for Emacs."
  :group 'languages)

(defgroup PostScript-edit nil
  "PostScript editing."
  :link '(custom-group-link :tag "Font Lock Faces group" font-lock-faces)
  :prefix "ps-mode-"
  :group 'PostScript)

(defgroup PostScript-interaction nil
  "PostScript interaction."
  :prefix "ps-run-"
  :group 'PostScript)

;; User variables.

(defcustom ps-mode-auto-indent t
  "*Should we use autoindent?"
  :group 'PostScript-edit
  :type 'boolean)

(defcustom ps-mode-tab 4
  "*Number of spaces to use when indenting."
  :group 'PostScript-edit
  :type 'integer)

(defcustom ps-mode-paper-size '(595 842)
  "*Default paper size.

When inserting an EPSF template these values are used
to set the boundingbox to include the whole page.
When the figure is finished these values should be replaced."
  :group 'PostScript-edit
  :type '(choice
	  (const :tag "letter"       (612  792))
	  (const :tag "legal"        (612 1008))
	  (const :tag "a0" 	    (2380 3368))
	  (const :tag "a1" 	    (1684 2380))
	  (const :tag "a2" 	    (1190 1684))
	  (const :tag "a3" 	     (842 1190))
	  (const :tag "a4" 	     (595  842))
	  (const :tag "a5" 	     (421  595))
	  (const :tag "a6" 	     (297  421))
	  (const :tag "a7" 	     (210  297))
	  (const :tag "a8" 	     (148  210))
	  (const :tag "a9" 	     (105  148))
	  (const :tag "a10"           (74  105))
	  (const :tag "b0" 	    (2836 4008))
	  (const :tag "b1" 	    (2004 2836))
	  (const :tag "b2" 	    (1418 2004))
	  (const :tag "b3" 	    (1002 1418))
	  (const :tag "b4" 	     (709 1002))
	  (const :tag "b5" 	     (501  709))
	  (const :tag "archE"       (2592 3456))
	  (const :tag "archD"       (1728 2592))
	  (const :tag "archC"       (1296 1728))
	  (const :tag "archB"        (864 1296))
	  (const :tag "archA"        (648  864))
	  (const :tag "flsa"         (612  936))
	  (const :tag "flse"         (612  936))
	  (const :tag "halfletter"   (396  612))
	  (const :tag "11x17"        (792 1224))
	  (const :tag "tabloid"      (792 1224))
	  (const :tag "ledger"      (1224  792))
	  (const :tag "csheet"      (1224 1584))
	  (const :tag "dsheet"      (1584 2448))
	  (const :tag "esheet"      (2448 3168))))

(defcustom ps-mode-print-function
  (lambda ()
     (let ((lpr-switches nil)
	   (lpr-command (if (memq system-type '(usg-unix-v hpux irix))
			    "lp" "lpr")))
       (lpr-buffer)))
  "*Lisp function to print current buffer as PostScript."
  :group 'PostScript-edit
  :type 'function)

(defcustom ps-run-prompt "\\(GS\\(<[0-9]+\\)?>\\)+"
  "*Regexp to match prompt in interactive PostScript."
  :group 'PostScript-interaction
  :type 'regexp)

(defcustom ps-run-font-lock-keywords-2
  (append (unless (string= ps-run-prompt "")
	    (list (list (if (= ?^ (string-to-char ps-run-prompt))
			    ps-run-prompt
			  (concat "^" ps-run-prompt))
			'(0 font-lock-function-name-face nil nil))))
	  '((">>showpage, press <return> to continue<<"
	     (0 font-lock-keyword-face nil nil))
	    ("^\\(Error\\|Can't\\).*"
	     (0 font-lock-warning-face nil nil))
	    ("^\\(Current file position is\\) \\([0-9]+\\)"
	     (1 font-lock-comment-face nil nil)
	     (2 font-lock-warning-face nil nil))))
  "*Medium level highlighting of messages from the PostScript interpreter.

See documentation on font-lock for details."
  :group 'PostScript-interaction
  :type '(repeat (list :tag "Expression with one or more highlighters"
		       :value ("" (0 default nil t))
		       (regexp :tag "Expression")
		       (repeat :tag "Highlighters"
			       :inline regexp
			       (list :tag "Highlighter"
				     (integer :tag "Subexp")
				     face
				     (boolean :tag "Override")
				     (boolean :tag "Laxmatch" :value t))))))

(defcustom ps-run-x '("gs" "-r72" "-sPAPERSIZE=a4")
  "*Command as list to run PostScript with graphic display."
  :group 'PostScript-interaction
  :type '(repeat string))

(defcustom ps-run-dumb '("gs" "-dNODISPLAY")
  "*Command as list to run PostScript without graphic display."
  :group 'PostScript-interaction
  :type '(repeat string))

(defcustom ps-run-init nil
  "*String of commands to send to PostScript to start interactive.

Example: \"executive\"

You won't need to set this option for Ghostscript."
  :group 'PostScript-interaction
  :type '(choice (const nil) string))

(defcustom ps-run-error-line-numbers nil
  "*What values are used by the PostScript interpreter in error messages?"
  :group 'PostScript-interaction
  :type '(choice (const :tag "line numbers" t)
                 (const :tag "byte counts" nil)))

(defcustom ps-run-tmp-dir nil
  "*Name of directory to place temporary file.

If nil, the following are tried in turn, until success:
  1. \"$TEMP\"
  2. \"$TMP\"
  3. \"$HOME/tmp\"
  4. \"/tmp\""
  :group 'PostScript-interaction
  :type '(choice (const nil) directory))


;; Constants used for font-lock.

;; Only a small set of the PostScript operators is selected for fontification.
;; Fontification is meant to clarify the document structure and process flow,
;; fontifying all known PostScript operators would hinder that objective.
(defconst ps-mode-operators
  (let ((ops '("clear" "mark" "cleartomark" "counttomark"
	       "forall"
	       "dict" "begin" "end" "def"
	       "true" "false"
	       "exec" "if" "ifelse" "for" "repeat" "loop" "exit"
	       "stop" "stopped" "countexecstack" "execstack"
	       "quit" "start"
	       "save" "restore"
	       "bind" "null"
	       "gsave" "grestore" "grestoreall"
	       "showpage")))
    (concat "\\<" (regexp-opt ops t) "\\>"))
  "Regexp of PostScript operators that will be fontified.")

;; Level 1 font-lock:
;;  - Special comments (reference face)
;;  - Strings and other comments
;;  - Partial strings (warning face)
;;  - 8bit characters (warning face)
;; Multiline strings are not supported. Strings with nested brackets are.
(defconst ps-mode-font-lock-keywords-1
  '(("\\`%!PS.*" . font-lock-reference-face)
    ("^%%BoundingBox:[ \t]+-?[0-9]+[ \t]+-?[0-9]+[ \t]+-?[0-9]+[ \t]+-?[0-9]+[ \t]*$"
     . font-lock-reference-face)
    (ps-mode-match-string-or-comment
     (1 font-lock-comment-face nil t)
     (2 font-lock-string-face nil t))
    ("([^()\n%]*\\|[^()\n]*)" . font-lock-warning-face)
    ("[\200-\377]+" (0 font-lock-warning-face prepend nil)))
  "Subdued level highlighting for PostScript mode.")

;; Level 2 font-lock:
;;  - All from level 1
;;  - PostScript operators (keyword face)
(defconst ps-mode-font-lock-keywords-2
  (append
   ps-mode-font-lock-keywords-1
   (list
    (cons
     ;; exclude names prepended by `/'
     (concat "\\(^\\|[^/\n]\\)" ps-mode-operators)
     '(2 font-lock-keyword-face))))
  "Medium level highlighting for PostScript mode.")

;; Level 3 font-lock:
;;  - All from level 2
;;  - Immediately evaluated names: those starting with `//' (type face)
;;  - Names that look like they are used for the definition of:
;;     * a function
;;     * an array
;;     * a dictionary
;;     * a "global" variable
;;    (function name face)
;;  - Other names (variable name face)
;; The rules used to determine what names fit in the first category are:
;;  - Only names that are at the left margin, and one of these on the same line:
;;     * Nothing after the name except possibly one or more `[' or a comment
;;     * A `{' or `<<' or `[0-9]+ dict' following the name
;;     * A `def' somewhere in the same line
;; Names are fontified before PostScript operators, allowing the use of
;; a more simple (efficient) regexp than the one used in level 2.
(defconst ps-mode-font-lock-keywords-3
  (append
   ps-mode-font-lock-keywords-1
   (list
    '("//\\w+" . font-lock-type-face)
    `(,(concat
	"^\\(/\\w+\\)\\>"
	"\\([[ \t]*\\(%.*\\)?\r?$"	; Nothing but `[' or comment after the name.
	"\\|[ \t]*\\({\\|<<\\)"		; `{' or `<<' following the name.
	"\\|[ \t]+[0-9]+[ \t]+dict\\>"	; `[0-9]+ dict' following the name.
	"\\|.*\\<def\\>\\)")		; `def' somewhere on the same line.
      . (1 font-lock-function-name-face))
    '("/\\w+" . font-lock-variable-name-face)
    (cons ps-mode-operators 'font-lock-keyword-face)))
  "High level highliting for PostScript mode.")

(defconst ps-mode-font-lock-keywords ps-mode-font-lock-keywords-1
  "Default expressions to highlight in PostScript mode.")

;; Level 1 font-lock for ps-run-mode
;;  - prompt (function name face)
(defconst ps-run-font-lock-keywords-1
  (unless (string= "" ps-run-prompt)
    (list (cons (if (= ?^ (string-to-char ps-run-prompt))
		    ps-run-prompt
		  (concat "^" ps-run-prompt))
		'font-lock-function-name-face)))
  "Subdued level highlighting for PostScript run mode.")

(defconst ps-run-font-lock-keywords ps-run-font-lock-keywords-1
  "Default expressions to highlight in PostScript run mode.")


;; Variables.

(defvar ps-mode-map nil
  "Local keymap to use in PostScript mode.")

(defvar ps-mode-syntax-table nil
  "Syntax table used while in PostScript mode.")

(defvar ps-run-mode-map nil
  "Local keymap to use in PostScript run mode.")

(defvar ps-mode-tmp-file nil
  "Name of temporary file, set by `ps-run'.")

(defvar ps-run-mark nil
  "Mark to start of region that was sent to PostScript interpreter.")

(defvar ps-run-parent nil
  "Parent window of interactive PostScript.")


;; Menu

(defconst ps-mode-menu-main
  '("PostScript"
    ["EPSF Template, Sparse" ps-mode-epsf-sparse t]
    ["EPSF Template, Rich"   ps-mode-epsf-rich t]
    "---"
    ("Cookbook"
     ["RE" ps-mode-RE t]
     ["ISOLatin1Extended" ps-mode-latin-extended t]
     ["center" ps-mode-center t]
     ["right" ps-mode-right t]
     ["Heapsort" ps-mode-heapsort t])
    ("Fonts (1)"
     ["Times-Roman" (insert "/Times-Roman ") t]
     ["Times-Bold" (insert "/Times-Bold ") t]
     ["Times-Italic" (insert "/Times-Italic ") t]
     ["Times-BoldItalic" (insert "/Times-BoldItalic ") t]
     ["Helvetica" (insert "/Helvetica ") t]
     ["Helvetica-Bold" (insert "/Helvetica-Bold ") t]
     ["Helvetica-Oblique" (insert "/Helvetica-Oblique ") t]
     ["Helvetica-BoldOblique" (insert "/Helvetica-BoldOblique ") t]
     ["Courier" (insert "/Courier ") t]
     ["Courier-Bold" (insert "/Courier-Bold ") t]
     ["Courier-Oblique" (insert "/Courier-Oblique ") t]
     ["Courier-BoldOblique" (insert "/Courier-BoldOblique ") t]
     ["Symbol" (insert "/Symbol") t ])
    ("Fonts (2)"
     ["AvantGarde-Book" (insert "/AvantGarde-Book ") t]
     ["AvantGarde-Demi" (insert "/AvantGarde-Demi ") t]
     ["AvantGarde-BookOblique" (insert "/AvantGarde-BookOblique ") t]
     ["AvantGarde-DemiOblique" (insert "/AvantGarde-DemiOblique ") t]
     ["Bookman-Light" (insert "/Bookman-Light ") t]
     ["Bookman-Demi" (insert "/Bookman-Demi ") t]
     ["Bookman-LightItalic" (insert "/Bookman-LightItalic ") t]
     ["Bookman-DemiItalic" (insert "/Bookman-DemiItalic ") t]
     ["Helvetica-Narrow" (insert "/Helvetica-Narrow ") t]
     ["Helvetica-Narrow-Bold" (insert "/Helvetica-Narrow-Bold ") t]
     ["Helvetica-Narrow-Oblique" (insert "/Helvetica-Narrow-Oblique ") t]
     ["Helvetica-Narrow-BoldOblique" (insert "/Helvetica-Narrow-BoldOblique ") t]
     ["NewCenturySchlbk-Roman" (insert "/NewCenturySchlbk-Roman ") t]
     ["NewCenturySchlbk-Bold" (insert "/NewCenturySchlbk-Bold ") t]
     ["NewCenturySchlbk-Italic" (insert "/NewCenturySchlbk-Italic ") t]
     ["NewCenturySchlbk-BoldItalic" (insert "/NewCenturySchlbk-BoldItalic ") t]
     ["Palatino-Roman" (insert "/Palatino-Roman ") t]
     ["Palatino-Bold" (insert "/Palatino-Bold ") t]
     ["Palatino-Italic" (insert "/Palatino-Italic ") t]
     ["Palatino-BoldItalic" (insert "/Palatino-BoldItalic ") t]
     ["ZapfChancery-MediumItalic" (insert "/ZapfChancery-MediumItalic ") t]
     ["ZapfDingbats" (insert "/ZapfDingbats ") t])
    "---"
    ["Comment Out Region" ps-mode-comment-out-region (mark t)]
    ["Uncomment Region" ps-mode-uncomment-region (mark t)]
    "---"
    ["8-bit to Octal Buffer" ps-mode-octal-buffer t]
    ["8-bit to Octal Region" ps-mode-octal-region (mark t)]
    "---"
    ["Auto Indent" (setq ps-mode-auto-indent (not ps-mode-auto-indent))
     :style toggle :selected ps-mode-auto-indent]
    "---"
    ["Start PostScript"
     ps-run-start
     t]
    ["Quit PostScript" ps-run-quit (process-status "ps-run")]
    ["Kill PostScript" ps-run-kill (process-status "ps-run")]
    ["Send Buffer to Interpreter"
     ps-run-buffer
     (process-status "ps-run")]
    ["Send Region to Interpreter"
     ps-run-region
     (and (mark t) (process-status "ps-run"))]
    ["Send Newline to Interpreter"
     ps-mode-other-newline
     (process-status "ps-run")]
    ["View BoundingBox"
     ps-run-boundingbox
     (process-status "ps-run")]
    ["Clear/Reset PostScript Graphics"
     ps-run-clear
     (process-status "ps-run")]
    "---"
    ["Print Buffer as PostScript"
     ps-mode-print-buffer
     t]
    ["Print Region as PostScript"
     ps-mode-print-region
     (mark t)]
    "---"
    ["Customize for PostScript"
     (customize-group "PostScript")
     t]
    "---"
    ["Submit Bug Report"
     ps-mode-submit-bug-report
     t]))


;; Mode maps for PostScript edit mode and PostScript interaction mode.

(unless ps-mode-map
  (setq ps-mode-map (make-sparse-keymap))
  (define-key ps-mode-map "\C-c\C-v" 'ps-run-boundingbox)
  (define-key ps-mode-map "\C-c\C-u" 'ps-mode-uncomment-region)
  (define-key ps-mode-map "\C-c\C-t" 'ps-mode-epsf-rich)
  (define-key ps-mode-map "\C-c\C-s" 'ps-run-start)
  (define-key ps-mode-map "\C-c\C-r" 'ps-run-region)
  (define-key ps-mode-map "\C-c\C-q" 'ps-run-quit)
  (define-key ps-mode-map "\C-c\C-p" 'ps-mode-print-buffer)
  (define-key ps-mode-map "\C-c\C-o" 'ps-mode-comment-out-region)
  (define-key ps-mode-map "\C-c\C-k" 'ps-run-kill)
  (define-key ps-mode-map "\C-c\C-j" 'ps-mode-other-newline)
  (define-key ps-mode-map "\C-c\C-l" 'ps-run-clear)
  (define-key ps-mode-map "\C-c\C-b" 'ps-run-buffer)
  (define-key ps-mode-map ">" 'ps-mode-r-gt)
  (define-key ps-mode-map "]" 'ps-mode-r-angle)
  (define-key ps-mode-map "}" 'ps-mode-r-brace)
  (define-key ps-mode-map "\177" 'ps-mode-backward-delete-char)
  (define-key ps-mode-map "\t" 'ps-mode-tabkey)
  (define-key ps-mode-map "\r" 'ps-mode-newline)
  (define-key ps-mode-map [return] 'ps-mode-newline)
  (easy-menu-define ps-mode-main ps-mode-map "PostScript" ps-mode-menu-main))

(unless ps-run-mode-map
  (setq ps-run-mode-map (make-sparse-keymap))
  (define-key ps-run-mode-map "\C-c\C-q" 'ps-run-quit)
  (define-key ps-run-mode-map "\C-c\C-k" 'ps-run-kill)
  (define-key ps-run-mode-map "\C-c\C-e" 'ps-run-goto-error)
  (define-key ps-run-mode-map [mouse-2] 'ps-run-mouse-goto-error)
  (define-key ps-run-mode-map "\r" 'ps-run-newline)
  (define-key ps-run-mode-map [return] 'ps-run-newline))


;; Syntax table.

(unless ps-mode-syntax-table
  (setq ps-mode-syntax-table (make-syntax-table))

  (modify-syntax-entry ?\% "< " ps-mode-syntax-table)
  (modify-syntax-entry ?\n "> " ps-mode-syntax-table)
  (modify-syntax-entry ?\r "> " ps-mode-syntax-table)
  (modify-syntax-entry ?\f "> " ps-mode-syntax-table)
  (modify-syntax-entry ?\< "(>" ps-mode-syntax-table)
  (modify-syntax-entry ?\> ")<" ps-mode-syntax-table)

  (modify-syntax-entry ?\! "w " ps-mode-syntax-table)
  (modify-syntax-entry ?\" "w " ps-mode-syntax-table)
  (modify-syntax-entry ?\# "w " ps-mode-syntax-table)
  (modify-syntax-entry ?\$ "w " ps-mode-syntax-table)
  (modify-syntax-entry ?\& "w " ps-mode-syntax-table)
  (modify-syntax-entry ?\' "w " ps-mode-syntax-table)
  (modify-syntax-entry ?\* "w " ps-mode-syntax-table)
  (modify-syntax-entry ?\+ "w " ps-mode-syntax-table)
  (modify-syntax-entry ?\, "w " ps-mode-syntax-table)
  (modify-syntax-entry ?\- "w " ps-mode-syntax-table)
  (modify-syntax-entry ?\. "w " ps-mode-syntax-table)
  (modify-syntax-entry ?\: "w " ps-mode-syntax-table)
  (modify-syntax-entry ?\; "w " ps-mode-syntax-table)
  (modify-syntax-entry ?\= "w " ps-mode-syntax-table)
  (modify-syntax-entry ?\? "w " ps-mode-syntax-table)
  (modify-syntax-entry ?\@ "w " ps-mode-syntax-table)
  (modify-syntax-entry ?\\ "w " ps-mode-syntax-table)
  (modify-syntax-entry ?^  "w " ps-mode-syntax-table) ; NOT: ?\^
  (modify-syntax-entry ?\_ "w " ps-mode-syntax-table)
  (modify-syntax-entry ?\` "w " ps-mode-syntax-table)
  (modify-syntax-entry ?\| "w " ps-mode-syntax-table)
  (modify-syntax-entry ?\~ "w " ps-mode-syntax-table)

  (let ((i 128))
    (while (< i 256)
      (modify-syntax-entry i "w " ps-mode-syntax-table)
      (setq i (1+ i)))))



(declare-function doc-view-minor-mode "doc-view")

;; PostScript mode.

;;;###autoload
(define-derived-mode ps-mode fundamental-mode "PostScript"
  "Major mode for editing PostScript with GNU Emacs.

Entry to this mode calls `ps-mode-hook'.

The following variables hold user options, and can
be set through the `customize' command:

  `ps-mode-auto-indent'
  `ps-mode-tab'
  `ps-mode-paper-size'
  `ps-mode-print-function'
  `ps-run-prompt'
  `ps-run-font-lock-keywords-2'
  `ps-run-x'
  `ps-run-dumb'
  `ps-run-init'
  `ps-run-error-line-numbers'
  `ps-run-tmp-dir'

Type \\[describe-variable] for documentation on these options.


\\{ps-mode-map}


When starting an interactive PostScript process with \\[ps-run-start],
a second window will be displayed, and `ps-run-mode-hook' will be called.
The keymap for this second window is:

\\{ps-run-mode-map}


When Ghostscript encounters an error it displays an error message
with a file position. Clicking mouse-2 on this number will bring
point to the corresponding spot in the PostScript window, if input
to the interpreter was sent from that window.
Typing \\<ps-run-mode-map>\\[ps-run-goto-error] when the cursor is at the number has the same effect."
  (set (make-local-variable 'font-lock-defaults)
       '((ps-mode-font-lock-keywords
 	  ps-mode-font-lock-keywords-1
 	  ps-mode-font-lock-keywords-2
 	  ps-mode-font-lock-keywords-3)
	 t))
  (set (make-local-variable 'comment-start) "%")
  ;; NOTE: `\' has a special meaning in strings only
  (set (make-local-variable 'comment-start-skip) "%+[ \t]*")
  ;; enable doc-view-minor-mode => C-c C-c starts viewing the current ps file
  ;; with doc-view-mode.
  (doc-view-minor-mode 1))

(defun ps-mode-show-version ()
  "Show current version of PostScript mode."
  (interactive)
  (message " *** PostScript Mode (ps-mode) Version %s *** " ps-mode-version))

(defun ps-mode-submit-bug-report ()
  "Submit via mail a bug report on PostScript mode."
  (interactive)
  (when (y-or-n-p "Submit bug report on PostScript mode? ")
    (let ((reporter-prompt-for-summary-p nil)
	  (reporter-dont-compact-list '(ps-mode-print-function
					ps-run-font-lock-keywords-2)))
      (reporter-submit-bug-report
       ps-mode-maintainer-address
       (format "ps-mode.el %s [%s]" ps-mode-version system-type)
       '(ps-mode-auto-indent
	 ps-mode-tab
	 ps-mode-paper-size
	 ps-mode-print-function
	 ps-run-prompt
	 ps-run-font-lock-keywords-2
	 ps-run-x
	 ps-run-dumb
	 ps-run-init
	 ps-run-error-line-numbers
	 ps-run-tmp-dir)))))


;; Helper functions for font-lock.

;; When this function is called, point is at an opening bracket.
;; This function should test if point is at the start of a string
;; with nested brackets.
;; If true:  move point to end of string
;;           set string to match data nr 2
;;           return new point
;; If false: return nil
(defun ps-mode-looking-at-nested (limit)
  (let ((first (point))
	(level 1)
	pos)
    ;; Move past opening bracket.
    (forward-char 1)
    (setq pos (point))
    (while (and (> level 0) (< pos limit))
      ;; Search next bracket, stepping over escaped brackets.
      (if (not (looking-at "\\([^()\\\n]\\|\\\\.\\)*\\([()]\\)"))
          (setq level -1)
	(setq level (+ level (if (string= "(" (match-string 2)) 1 -1)))
	(goto-char (setq pos (match-end 0)))))
    (if (not (= level 0))
        nil
      ;; Found string with nested brackets, now set match data nr 2.
      (set-match-data (list first pos nil nil first pos))
      pos)))

;; This function should search for a string or comment
;; If comment, return as match data nr 1
;; If string, return as match data nr 2
(defun ps-mode-match-string-or-comment (limit)
  ;; Find the first potential match.
  (if (not (re-search-forward "[%(]" limit t))
      ;; Nothing found: return failure.
      nil
    (let ((end (match-end 0)))
      (goto-char (match-beginning 0))
      (cond ((looking-at "\\(%.*\\)\\|\\((\\([^()\\\n]\\|\\\\.\\)*)\\)")
	     ;; It's a comment or string without nested, unescaped brackets.
	     (goto-char (match-end 0))
	     (point))
	    ((ps-mode-looking-at-nested limit)
	     ;; It's a string with nested brackets.
	     (point))
	    (t
	     ;; Try next match.
	     (goto-char end)
	     (ps-mode-match-string-or-comment limit))))))


;; Key-handlers.

(defun ps-mode-target-column ()
  "To what column should text on current line be indented?

Identation is increased if the last token on the current line
defines the beginning of a group. These tokens are:  {  [  <<"
  (save-excursion
    (beginning-of-line)
    (if (looking-at "[ \t]*\\(}\\|\\]\\|>>\\)")
	(condition-case err
	    (progn
	      (goto-char (match-end 0))
	      (backward-sexp 1)
	      (beginning-of-line)
	      (if (looking-at "[ \t]+")
		  (goto-char (match-end 0)))
	      (current-column))
	  (error
	   (ding)
	   (message "%s" (error-message-string err))
	   0))
      (let (target)
	(if (not (re-search-backward "[^ \t\n\r\f][ \t\n\r\f]*\\=" nil t))
	    0
	  (goto-char (match-beginning 0))
	  (beginning-of-line)
	  (if (looking-at "[ \t]+")
	      (goto-char (match-end 0)))
	  (setq target (current-column))
	  (end-of-line)
	  (if (re-search-backward "\\({\\|\\[\\|<<\\)[ \t]*\\(%[^\n]*\\)?\\=" nil t)
	      (setq target (+ target ps-mode-tab)))
	  target)))))

(defun ps-mode-newline ()
  "Insert newline with proper indentation."
  (interactive)
  (delete-horizontal-space)
  (insert "\n")
  (if ps-mode-auto-indent
      (indent-to (ps-mode-target-column))))

(defun ps-mode-tabkey ()
  "Indent/reindent current line, or insert tab."
  (interactive)
  (let ((column (current-column))
	target)
    (if (or (not ps-mode-auto-indent)
	    (< ps-mode-tab 1)
	    (not (re-search-backward "^[ \t]*\\=" nil t)))
	(insert "\t")
      (setq target (ps-mode-target-column))
      (while (<= target column)
	(setq target (+ target ps-mode-tab)))
      (indent-line-to target))))

(defun ps-mode-backward-delete-char ()
  "Delete backward indentation, or delete backward character."
  (interactive)
  (let ((column (current-column))
	target)
    (if (or (not ps-mode-auto-indent)
	    (< ps-mode-tab 1)
	    (not (re-search-backward "^[ \t]+\\=" nil t)))
	(delete-backward-char 1)
      (setq target (ps-mode-target-column))
      (while (> column target)
	(setq target (+ target ps-mode-tab)))
      (while (>= target column)
	(setq target (- target ps-mode-tab)))
      (if (< target 0)
	  (setq target 0))
      (indent-line-to target))))

(defun ps-mode-r-brace ()
  "Insert `}' and perform balance."
  (interactive)
  (insert "}")
  (ps-mode-r-balance "}"))

(defun ps-mode-r-angle ()
  "Insert `]' and perform balance."
  (interactive)
  (insert "]")
  (ps-mode-r-balance "]"))

(defun ps-mode-r-gt ()
  "Insert `>' and perform balance."
  (interactive)
  (insert ">")
  (ps-mode-r-balance ">>"))

(defun ps-mode-r-balance (right)
  "Adjust indentification if point after RIGHT."
  (if ps-mode-auto-indent
      (save-excursion
	(when (re-search-backward (concat "^[ \t]*" (regexp-quote right) "\\=") nil t)
	  (indent-line-to (ps-mode-target-column)))))
  (blink-matching-open))

(defun ps-mode-other-newline ()
  "Perform newline in `*ps run*' buffer."
  (interactive)
  (let ((buf (current-buffer)))
    (set-buffer "*ps run*")
    (ps-run-newline)
    (set-buffer buf)))


;; Print PostScript.

(defun ps-mode-print-buffer ()
  "Print buffer as PostScript."
  (interactive)
  (funcall ps-mode-print-function))

(defun ps-mode-print-region (begin end)
  "Print region as PostScript, adding minimal header and footer lines:

%!PS
<region>
showpage"
  (interactive "r")
  (let ((buf (current-buffer)))
    (with-temp-buffer
      (insert "%!PS\n")
      (insert-buffer-substring buf begin end)
      (insert "\nshowpage\n")
      (funcall ps-mode-print-function))))


;; Comment Out / Uncomment.

(defun ps-mode-comment-out-region (begin end)
  "Comment out region."
  (interactive "r")
  (let ((endm (make-marker)))
    (set-marker endm end)
    (save-excursion
      (goto-char begin)
      (if (= (current-column) 0)
	  (insert "%"))
      (while (and (= (forward-line) 0)
		  (< (point) (marker-position endm)))
	(insert "%")))
    (set-marker endm nil)))

(defun ps-mode-uncomment-region (begin end)
  "Uncomment region.

Only one `%' is removed, and it has to be in the first column."
  (interactive "r")
  (let ((endm (make-marker)))
    (set-marker endm end)
    (save-excursion
      (goto-char begin)
      (if (looking-at "^%")
	  (delete-char 1))
      (while (and (= (forward-line) 0)
		  (< (point) (marker-position endm)))
	(if (looking-at "%")
	    (delete-char 1))))
    (set-marker endm nil)))


;; Convert 8-bit to octal codes.

(defun ps-mode-octal-buffer ()
  "Change 8-bit characters to octal codes in buffer."
  (interactive)
  (ps-mode-octal-region (point-min) (point-max)))

(defun ps-mode-octal-region (begin end)
  "Change 8-bit characters to octal codes in region."
  (interactive "r")
  (if buffer-read-only
      (progn
	(ding)
	(message "Buffer is read only"))
    (save-excursion
      (let (endm i)
        (setq endm (make-marker))
        (set-marker endm end)
        (goto-char begin)
        (setq i 0)
        (while (re-search-forward "[\200-\377]" (marker-position endm) t)
          (setq i (1+ i))
          (backward-char)
          (insert (format "\\%03o" (string-to-char (buffer-substring (point) (1+ (point))))))
          (delete-char 1))
        (message "%d change%s made" i (if (= i 1) "" "s"))
        (set-marker endm nil)))))


;; Cookbook.

(defun ps-mode-center ()
  "Insert function /center."
  (interactive)
  (insert "
/center {
    dup stringwidth
    exch 2 div neg
    exch 2 div neg
    rmoveto
} bind def
"))

(defun ps-mode-right ()
  "Insert function /right."
  (interactive)
  (insert "
/right {
    dup stringwidth
    exch neg
    exch neg
    rmoveto
} bind def
"))

(defun ps-mode-RE ()
  "Insert function /RE."
  (interactive)
  (insert "
% `new-font-name' `encoding-vector' `old-font-name' RE -
/RE {
    findfont
    dup maxlength dict begin {
        1 index /FID ne { def } { pop pop } ifelse
    } forall
    /Encoding exch def
    dup /FontName exch def
    currentdict end definefont pop
} bind def
"))

(defun ps-mode-latin-extended ()
  "Insert array /ISOLatin1Extended.

This encoding vector contains all the entries from ISOLatin1Encoding
plus the usually uncoded characters inserted on positions 1 through 28."
  (interactive)
  (insert "
% ISOLatin1Encoding, extended with remaining uncoded glyphs
/ISOLatin1Extended [
    /.notdef /Lslash /lslash /OE /oe /Scaron /scaron /Zcaron /zcaron
    /Ydieresis /trademark /bullet /dagger /daggerdbl /ellipsis /emdash
    /endash /fi /fl /florin /fraction /guilsinglleft /guilsinglright
    /perthousand /quotedblbase /quotedblleft /quotedblright
    /quotesinglbase /quotesingle /.notdef /.notdef /.notdef /space
    /exclam /quotedbl /numbersign /dollar /percent /ampersand
    /quoteright /parenleft /parenright /asterisk /plus /comma /minus
    /period /slash /zero /one /two /three /four /five /six /seven /eight
    /nine /colon /semicolon /less /equal /greater /question /at /A /B /C
    /D /E /F /G /H /I /J /K /L /M /N /O /P /Q /R /S /T /U /V /W /X /Y /Z
    /bracketleft /backslash /bracketright /asciicircum /underscore
    /quoteleft /a /b /c /d /e /f /g /h /i /j /k /l /m /n /o /p /q /r /s
    /t /u /v /w /x /y /z /braceleft /bar /braceright /asciitilde
    /.notdef /.notdef /.notdef /.notdef /.notdef /.notdef /.notdef
    /.notdef /.notdef /.notdef /.notdef /.notdef /.notdef /.notdef
    /.notdef /.notdef /.notdef /dotlessi /grave /acute /circumflex
    /tilde /macron /breve /dotaccent /dieresis /.notdef /ring /cedilla
    /.notdef /hungarumlaut /ogonek /caron /space /exclamdown /cent
    /sterling /currency /yen /brokenbar /section /dieresis /copyright
    /ordfeminine /guillemotleft /logicalnot /hyphen /registered /macron
    /degree /plusminus /twosuperior /threesuperior /acute /mu /paragraph
    /periodcentered /cedilla /onesuperior /ordmasculine /guillemotright
    /onequarter /onehalf /threequarters /questiondown /Agrave /Aacute
    /Acircumflex /Atilde /Adieresis /Aring /AE /Ccedilla /Egrave /Eacute
    /Ecircumflex /Edieresis /Igrave /Iacute /Icircumflex /Idieresis /Eth
    /Ntilde /Ograve /Oacute /Ocircumflex /Otilde /Odieresis /multiply
    /Oslash /Ugrave /Uacute /Ucircumflex /Udieresis /Yacute /Thorn
    /germandbls /agrave /aacute /acircumflex /atilde /adieresis /aring
    /ae /ccedilla /egrave /eacute /ecircumflex /edieresis /igrave
    /iacute /icircumflex /idieresis /eth /ntilde /ograve /oacute
    /ocircumflex /otilde /odieresis /divide /oslash /ugrave /uacute
    /ucircumflex /udieresis /yacute /thorn /ydieresis
] def
"))

(defun ps-mode-heapsort ()
  "Insert function /Heapsort."
  (interactive)
  (insert "
% `array-element' Heapsort-cvi-or-cvr-or-cvs `number-or-string'
/Heapsort-cvi-or-cvr-or-cvs {
    % 0 get
} bind def
% `array' Heapsort `sorted-array'
/Heapsort {
    dup length /hsR exch def
    /hsL hsR 2 idiv 1 add def
    {
        hsR 2 lt { exit } if
        hsL 1 gt {
            /hsL hsL 1 sub def
        } {
            /hsR hsR 1 sub def
            dup dup dup 0 get exch dup hsR get
            0 exch put
            hsR exch put
        } ifelse
        dup hsL 1 sub get /hsT exch def
        /hsJ hsL def
        {
            /hsS hsJ def
            /hsJ hsJ dup add def
            hsJ hsR gt { exit } if
            hsJ hsR lt {
                dup dup hsJ 1 sub get Heapsort-cvi-or-cvr-or-cvs
                exch hsJ get Heapsort-cvi-or-cvr-or-cvs
                lt { /hsJ hsJ 1 add def } if
            } if
            dup hsJ 1 sub get Heapsort-cvi-or-cvr-or-cvs
            hsT Heapsort-cvi-or-cvr-or-cvs
            le { exit } if
            dup dup hsS 1 sub exch hsJ 1 sub get put
        } loop
        dup hsS 1 sub hsT put
    } loop
} bind def
"))


;; EPSF document lay-out.

(defun ps-mode-epsf-sparse ()
  "Insert sparse EPSF template."
  (interactive)
  (goto-char (point-max))
  (unless (re-search-backward "%%EOF[ \t\n]*\\'" nil t)
    (goto-char (point-max))
    (insert "\n%%EOF\n"))
  (goto-char (point-max))
  (unless (re-search-backward "\\bshowpage[ \t\n]+%%EOF[ \t\n]*\\'" nil t)
    (re-search-backward "%%EOF")
    (insert "showpage\n"))
  (goto-char (point-max))
  (unless (re-search-backward "\\bend[ \t\n]+\\bshowpage[ \t\n]+%%EOF[ \t\n]*\\'" nil t)
    (re-search-backward "showpage")
    (insert "\nend\n"))
  (goto-char (point-min))
  (insert "%!PS-Adobe-3.0 EPSF-3.0\n%%BoundingBox: 0 0 ")
  (insert (format "%d %d\n\n"
		  (car ps-mode-paper-size)
		  (car (cdr ps-mode-paper-size))))
  (insert "64 dict begin\n\n"))

(defun ps-mode-epsf-rich ()
  "Insert rich EPSF template."
  (interactive)
  (ps-mode-epsf-sparse)
  (forward-line -3)
  (when buffer-file-name
    (insert "%%Title: " (file-name-nondirectory buffer-file-name) "\n"))
  (insert "%%Creator: " (user-full-name) "\n")
  (insert "%%CreationDate: " (current-time-string) "\n")
  (insert "%%EndComments\n")
  (forward-line 3))


;; Interactive PostScript interpreter.

(define-derived-mode ps-run-mode fundamental-mode "Interactive PS"
  "Major mode in interactive PostScript window.
This mode is invoked from `ps-mode' and should not be called directly.

\\{ps-run-mode-map}"
  (set (make-local-variable 'font-lock-defaults)
       '((ps-run-font-lock-keywords
	  ps-run-font-lock-keywords-1
	  ps-run-font-lock-keywords-2)
	 t))
  (setq mode-line-process '(":%s")))

(defun ps-run-running ()
  "Error if not in `ps-mode' or not running PostScript."
  (unless (equal major-mode 'ps-mode)
    (error "This function can only be called from PostScript mode"))
  (unless (equal (process-status "ps-run") 'run)
    (error "No PostScript process running")))

(defun ps-run-start ()
  "Start interactive PostScript."
  (interactive)
  (let ((command (or (and window-system ps-run-x) ps-run-dumb))
	(init-file nil)
	(process-connection-type nil)
	(oldwin (selected-window)))
    (unless command
      (error "No command specified to run interactive PostScript"))
    (unless (and ps-run-mark (markerp ps-run-mark))
      (setq ps-run-mark (make-marker)))
    (when ps-run-init
      (setq init-file (ps-run-make-tmp-filename))
      (write-region (concat ps-run-init "\n") 0 init-file)
      (setq init-file (list init-file)))
    (pop-to-buffer "*ps run*")
    (ps-run-mode)
    (when (process-status "ps-run")
      (delete-process "ps-run"))
    (erase-buffer)
    (setq command (append command init-file))
    (insert (mapconcat 'identity command " ") "\n")
    (apply 'start-process "ps-run" "*ps run*" command)
    (select-window oldwin)))

(defun ps-run-quit ()
  "Quit interactive PostScript."
  (interactive)
  (ps-run-send-string "quit" t)
  (ps-run-cleanup))

(defun ps-run-kill ()
  "Kill interactive PostScript."
  (interactive)
  (delete-process "ps-run")
  (ps-run-cleanup))

(defun ps-run-clear ()
  "Clear/reset PostScript graphics."
  (interactive)
  (ps-run-send-string "showpage" t)
  (sit-for 1)
  (ps-run-send-string "" t))

(defun ps-run-buffer ()
  "Send buffer to PostScript interpreter."
  (interactive)
  (ps-run-region (point-min) (point-max)))

(defun ps-run-region (begin end)
  "Send region to PostScript interpreter."
  (interactive "r")
  (ps-run-running)
  (setq ps-run-parent (buffer-name))
  (let ((f (ps-run-make-tmp-filename)))
    (set-marker ps-run-mark begin)
    (write-region begin end f)
    (ps-run-send-string (format "(%s) run" f) t)))

(defun ps-run-boundingbox ()
  "View BoundingBox."
  (interactive)
  (ps-run-running)
  (let (x1 y1 x2 y2 f
	   (buf (current-buffer)))
    (save-excursion
      (goto-char 1)
      (re-search-forward
       "^%%BoundingBox:[ \t]+\\(-?[0-9]+\\)[ \t]+\\(-?[0-9]+\\)[ \t]+\\(-?[0-9]+\\)[ \t]+\\(-?[0-9]+\\)")
      (setq x1 (match-string 1)
            y1 (match-string 2)
            x2 (match-string 3)
            y2 (match-string 4)))
    (unless (< (string-to-number x1) (string-to-number x2))
      (error "x1 (%s) should be less than x2 (%s)" x1 x2))
    (unless (< (string-to-number y1) (string-to-number y2))
      (error "y1 (%s) should be less than y2 (%s)" y1 y2))
    (setq f (ps-run-make-tmp-filename))
    (write-region
     (format
      "gsave
    initgraphics
    2 setlinewidth
    %s %s moveto
    %s %s lineto
    %s %s lineto
    %s %s lineto
    closepath
    gsave
        [ 4 20 ] 0 setdash
        1 0 0 setrgbcolor
        stroke
    grestore
    gsave
        [ 4 20 ] 8 setdash
        0 1 0 setrgbcolor
        stroke
    grestore
    [ 4 20 ] 16 setdash
    0 0 1 setrgbcolor
    stroke
grestore
" x1 y1 x2 y1 x2 y2 x1 y2)
     0
     f)
    (ps-run-send-string (format "(%s) run" f) t)
    (set-buffer buf)))

(defun ps-run-send-string (string &optional echo)
  (let ((oldwin (selected-window)))
    (pop-to-buffer "*ps run*")
    (goto-char (point-max))
    (when echo
      (insert string "\n"))
    (set-marker (process-mark (get-process "ps-run")) (point))
    (process-send-string "ps-run" (concat string "\n"))
    (select-window oldwin)))

(defun ps-run-make-tmp-filename ()
  (unless ps-mode-tmp-file
    (cond (ps-run-tmp-dir)
	  ((setq ps-run-tmp-dir (getenv "TEMP")))
	  ((setq ps-run-tmp-dir (getenv "TMP")))
	  ((setq ps-run-tmp-dir (getenv "HOME"))
	   (setq
	    ps-run-tmp-dir
	    (concat (file-name-as-directory ps-run-tmp-dir) "tmp"))
	   (unless (file-directory-p ps-run-tmp-dir)
	     (setq ps-run-tmp-dir nil))))
    (unless ps-run-tmp-dir
      (setq ps-run-tmp-dir "/tmp"))
    (setq ps-mode-tmp-file
	  (make-temp-file
	   (concat
	    (if ps-run-tmp-dir
		(file-name-as-directory ps-run-tmp-dir)
	      "")
	    "ps-run-"))))
  ps-mode-tmp-file)

;; Remove temporary file
;; This shouldn't fail twice, because it is called at kill-emacs
(defun ps-run-cleanup ()
  (when ps-mode-tmp-file
    (let ((i ps-mode-tmp-file))
      (setq ps-mode-tmp-file nil)
      (when (file-exists-p i)
	(delete-file i)))))

(defun ps-run-mouse-goto-error (event)
  "Set point at mouse click, then call `ps-run-goto-error'."
  (interactive "e")
  (mouse-set-point event)
  (ps-run-goto-error))

(defun ps-run-newline ()
  "Process newline in PostScript interpreter window."
  (interactive)
  (end-of-line)
  (insert "\n")
  (forward-line -1)
  (when (looking-at ps-run-prompt)
    (goto-char (match-end 0)))
  (looking-at ".*")
  (goto-char (1+ (match-end 0)))
  (ps-run-send-string (buffer-substring (match-beginning 0) (match-end 0))))

(defun ps-run-goto-error ()
  "Jump to buffer position read as integer at point.
Use line numbers if `ps-run-error-line-numbers' is not nil"
  (interactive)
  (let ((p (point)))
    (unless (looking-at "[0-9]")
      (goto-char (max 1 (1- (point)))))
    (when (looking-at "[0-9]")
      (forward-char 1)
      (forward-word -1)
      (when (looking-at "[0-9]+")
	(let (i)
	  (setq
	   i
	   (string-to-number
	    (buffer-substring (match-beginning 0) (match-end 0))))
	  (goto-char p)
	  (pop-to-buffer ps-run-parent)
	  (if ps-run-error-line-numbers
	      (progn
		(goto-char (marker-position ps-run-mark))
		(forward-line (1- i))
		(end-of-line))
	    (goto-char (+ i (marker-position ps-run-mark)))))))))


;;
(add-hook 'kill-emacs-hook 'ps-run-cleanup)

(provide 'ps-mode)

;; arch-tag: dce13d2d-69fb-4ec4-9d5d-6dd29c3f0e6e
;;; ps-mode.el ends here