1 ;;; fortran.el --- Fortran mode for GNU Emacs
3 ;;; Copyright (c) 1986, 1993, 1994 Free Software Foundation, Inc.
5 ;; Author: Michael D. Prange <prange@erl.mit.edu>
6 ;; Maintainer: bug-fortran-mode@erl.mit.edu
7 ;; Version 1.30.4 (January 20, 1994)
10 ;; This file is part of GNU Emacs.
12 ;; GNU Emacs is free software; you can redistribute it and/or modify
13 ;; it under the terms of the GNU General Public License as published by
14 ;; the Free Software Foundation; either version 2, or (at your option)
17 ;; GNU Emacs is distributed in the hope that it will be useful,
18 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
19 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20 ;; GNU General Public License for more details.
22 ;; You should have received a copy of the GNU General Public License
23 ;; along with GNU Emacs; see the file COPYING. If not, write to
24 ;; the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
28 ;; Fortran mode has been upgraded and is now maintained by Stephen A. Wood
29 ;; (saw@cebaf.gov). It now will use either fixed format continuation line
30 ;; markers (character in 6th column), or tab format continuation line style
31 ;; (digit after a TAB character.) A auto-fill mode has been added to
32 ;; automatically wrap fortran lines that get too long.
34 ;; We acknowledge many contributions and valuable suggestions by
35 ;; Lawrence R. Dodd, Ralf Fassel, Ralph Finch, Stephen Gildea,
36 ;; Dr. Anil Gokhale, Ulrich Mueller, Mark Neale, Eric Prestemon,
37 ;; Gary Sabot and Richard Stallman.
39 ;;; This file may be used with GNU Emacs version 18.xx if the following
40 ;;; variable and function substitutions are made.
42 ;;; frame-width with screen-width
43 ;;; auto-fill-function with auto-fill-hook
44 ;;; comment-indent-function with comment-indent-hook
45 ;;; (setq unread-command-events (list c)) with (setq unread-command-char c)
47 ;;; Bugs to bug-fortran-mode@erl.mit.edu
49 (defconst fortran-mode-version
"version 1.30.4")
54 (defvar fortran-tab-mode-default nil
55 "*Default tabbing/carriage control style for empty files in Fortran mode.
56 A value of t specifies tab-digit style of continuation control.
57 A value of nil specifies that continuation lines are marked
58 with a character in column 6.")
60 ;; Buffer local, used to display mode line.
61 (defvar fortran-tab-mode-string nil
62 "String to appear in mode line when TAB format mode is on.")
64 (defvar fortran-do-indent
3
65 "*Extra indentation applied to DO blocks.")
67 (defvar fortran-if-indent
3
68 "*Extra indentation applied to IF blocks.")
70 (defvar fortran-structure-indent
3
71 "*Extra indentation applied to STRUCTURE, UNION, MAP and INTERFACE blocks.")
73 (defvar fortran-continuation-indent
5
74 "*Extra indentation applied to Fortran continuation lines.")
76 (defvar fortran-comment-indent-style
'fixed
77 "*nil forces comment lines not to be touched,
78 'fixed makes fixed comment indentation to `fortran-comment-line-extra-indent'
79 columns beyond `fortran-minimum-statement-indent-fixed' (for
80 `indent-tabs-mode' of nil) or `fortran-minimum-statement-indent-tab' (for
81 `indent-tabs-mode' of t), and 'relative indents to current
82 Fortran indentation plus `fortran-comment-line-extra-indent'.")
84 (defvar fortran-comment-line-extra-indent
0
85 "*Amount of extra indentation for text within full-line comments.")
87 (defvar comment-line-start nil
88 "*Delimiter inserted to start new full-line comment.")
90 (defvar comment-line-start-skip nil
91 "*Regexp to match the start of a full-line comment.")
93 (defvar fortran-minimum-statement-indent-fixed
6
94 "*Minimum statement indentation for fixed format continuation style.")
96 (defvar fortran-minimum-statement-indent-tab
(max tab-width
6)
97 "*Minimum statement indentation for TAB format continuation style.")
99 ;; Note that this is documented in the v18 manuals as being a string
100 ;; of length one rather than a single character.
101 ;; The code in this file accepts either format for compatibility.
102 (defvar fortran-comment-indent-char
" "
103 "*Single-character string inserted for Fortran comment indentation.
106 (defvar fortran-line-number-indent
1
107 "*Maximum indentation for Fortran line numbers.
108 5 means right-justify them within their five-column field.")
110 (defvar fortran-check-all-num-for-matching-do nil
111 "*Non-nil causes all numbered lines to be treated as possible DO loop ends.")
113 (defvar fortran-blink-matching-if nil
114 "*From a Fortran ENDIF statement, blink the matching IF statement.
115 Also, from an ENDDO statement, blink on matching DO [WHILE] statement.")
117 (defvar fortran-continuation-string
"$"
118 "*Single-character string used for Fortran continuation lines.
119 In fixed format continuation style, this character is inserted in
120 column 6 by \\[fortran-split-line] to begin a continuation line.
121 Also, if \\[fortran-indent-line] finds this at the beginning of a line, it will
122 convert the line into a continuation line of the appropriate style.
125 (defvar fortran-comment-region
"c$$$"
126 "*String inserted by \\[fortran-comment-region]\
127 at start of each line in region.")
129 (defvar fortran-electric-line-number t
130 "*Non-nil causes line number digits to be moved to the correct column as\
133 (defvar fortran-startup-message t
134 "*Non-nil displays a startup message when Fortran mode is first called.")
136 (defvar fortran-column-ruler-fixed
137 "0 4 6 10 20 30 40 5\
139 [ ]|{ | | | | | | | | \
141 "*String displayed above current line by \\[fortran-column-ruler].
142 This variable used in fixed format mode.")
144 (defvar fortran-column-ruler-tab
147 [ ]| { | | | | | | | | \
149 "*String displayed above current line by \\[fortran-column-ruler].
150 This variable used in TAB format mode.")
152 (defconst bug-fortran-mode
"bug-fortran-mode@erl.mit.edu"
153 "Address of mailing list for Fortran mode bugs.")
155 (defvar fortran-mode-syntax-table nil
156 "Syntax table in use in Fortran mode buffers.")
158 (defvar fortran-analyze-depth
100
159 "Number of lines to scan to determine whether to use fixed or TAB format\
162 (defvar fortran-break-before-delimiters t
163 "*Non-nil causes `fortran-do-auto-fill' to break lines before delimiters.")
165 (if fortran-mode-syntax-table
167 (setq fortran-mode-syntax-table
(make-syntax-table))
168 (modify-syntax-entry ?\
; "w" fortran-mode-syntax-table)
169 (modify-syntax-entry ?
\r " " fortran-mode-syntax-table
)
170 (modify-syntax-entry ?
+ "." fortran-mode-syntax-table
)
171 (modify-syntax-entry ?-
"." fortran-mode-syntax-table
)
172 (modify-syntax-entry ?
= "." fortran-mode-syntax-table
)
173 (modify-syntax-entry ?
* "." fortran-mode-syntax-table
)
174 (modify-syntax-entry ?
/ "." fortran-mode-syntax-table
)
175 (modify-syntax-entry ?
\' "\"" fortran-mode-syntax-table
)
176 (modify-syntax-entry ?
\" "\"" fortran-mode-syntax-table
)
177 (modify-syntax-entry ?
\\ "/" fortran-mode-syntax-table
)
178 (modify-syntax-entry ?.
"w" fortran-mode-syntax-table
)
179 (modify-syntax-entry ?_
"w" fortran-mode-syntax-table
)
180 (modify-syntax-entry ?
\n ">" fortran-mode-syntax-table
))
182 (defvar fortran-mode-map
()
183 "Keymap used in Fortran mode.")
186 (setq fortran-mode-map
(make-sparse-keymap))
187 (define-key fortran-mode-map
";" 'fortran-abbrev-start
)
188 (define-key fortran-mode-map
"\C-c;" 'fortran-comment-region
)
189 (define-key fortran-mode-map
"\e\C-a" 'beginning-of-fortran-subprogram
)
190 (define-key fortran-mode-map
"\e\C-e" 'end-of-fortran-subprogram
)
191 (define-key fortran-mode-map
"\e;" 'fortran-indent-comment
)
192 (define-key fortran-mode-map
"\e\C-h" 'mark-fortran-subprogram
)
193 (define-key fortran-mode-map
"\e\n" 'fortran-split-line
)
194 (define-key fortran-mode-map
"\n" 'fortran-indent-new-line
)
195 (define-key fortran-mode-map
"\e\C-q" 'fortran-indent-subprogram
)
196 (define-key fortran-mode-map
"\C-c\C-w" 'fortran-window-create-momentarily
)
197 (define-key fortran-mode-map
"\C-c\C-r" 'fortran-column-ruler
)
198 (define-key fortran-mode-map
"\C-c\C-p" 'fortran-previous-statement
)
199 (define-key fortran-mode-map
"\C-c\C-n" 'fortran-next-statement
)
200 (define-key fortran-mode-map
"\t" 'fortran-indent-line
)
201 (define-key fortran-mode-map
"0" 'fortran-electric-line-number
)
202 (define-key fortran-mode-map
"1" 'fortran-electric-line-number
)
203 (define-key fortran-mode-map
"2" 'fortran-electric-line-number
)
204 (define-key fortran-mode-map
"3" 'fortran-electric-line-number
)
205 (define-key fortran-mode-map
"4" 'fortran-electric-line-number
)
206 (define-key fortran-mode-map
"5" 'fortran-electric-line-number
)
207 (define-key fortran-mode-map
"6" 'fortran-electric-line-number
)
208 (define-key fortran-mode-map
"7" 'fortran-electric-line-number
)
209 (define-key fortran-mode-map
"8" 'fortran-electric-line-number
)
210 (define-key fortran-mode-map
"9" 'fortran-electric-line-number
))
212 (defvar fortran-mode-abbrev-table nil
)
213 (if fortran-mode-abbrev-table
215 (let ((ac abbrevs-changed
))
216 (define-abbrev-table 'fortran-mode-abbrev-table
())
217 (define-abbrev fortran-mode-abbrev-table
";au" "automatic" nil
)
218 (define-abbrev fortran-mode-abbrev-table
";b" "byte" nil
)
219 (define-abbrev fortran-mode-abbrev-table
";bd" "block data" nil
)
220 (define-abbrev fortran-mode-abbrev-table
";ch" "character" nil
)
221 (define-abbrev fortran-mode-abbrev-table
";cl" "close" nil
)
222 (define-abbrev fortran-mode-abbrev-table
";c" "continue" nil
)
223 (define-abbrev fortran-mode-abbrev-table
";cm" "common" nil
)
224 (define-abbrev fortran-mode-abbrev-table
";cx" "complex" nil
)
225 (define-abbrev fortran-mode-abbrev-table
";df" "define" nil
)
226 (define-abbrev fortran-mode-abbrev-table
";di" "dimension" nil
)
227 (define-abbrev fortran-mode-abbrev-table
";do" "double" nil
)
228 (define-abbrev fortran-mode-abbrev-table
";dc" "double complex" nil
)
229 (define-abbrev fortran-mode-abbrev-table
";dp" "double precision" nil
)
230 (define-abbrev fortran-mode-abbrev-table
";dw" "do while" nil
)
231 (define-abbrev fortran-mode-abbrev-table
";e" "else" nil
)
232 (define-abbrev fortran-mode-abbrev-table
";ed" "enddo" nil
)
233 (define-abbrev fortran-mode-abbrev-table
";el" "elseif" nil
)
234 (define-abbrev fortran-mode-abbrev-table
";en" "endif" nil
)
235 (define-abbrev fortran-mode-abbrev-table
";eq" "equivalence" nil
)
236 (define-abbrev fortran-mode-abbrev-table
";ew" "endwhere" nil
)
237 (define-abbrev fortran-mode-abbrev-table
";ex" "external" nil
)
238 (define-abbrev fortran-mode-abbrev-table
";ey" "entry" nil
)
239 (define-abbrev fortran-mode-abbrev-table
";f" "format" nil
)
240 (define-abbrev fortran-mode-abbrev-table
";fa" ".false." nil
)
241 (define-abbrev fortran-mode-abbrev-table
";fu" "function" nil
)
242 (define-abbrev fortran-mode-abbrev-table
";g" "goto" nil
)
243 (define-abbrev fortran-mode-abbrev-table
";im" "implicit" nil
)
244 (define-abbrev fortran-mode-abbrev-table
";ib" "implicit byte" nil
)
245 (define-abbrev fortran-mode-abbrev-table
";ic" "implicit complex" nil
)
246 (define-abbrev fortran-mode-abbrev-table
";ich" "implicit character" nil
)
247 (define-abbrev fortran-mode-abbrev-table
";ii" "implicit integer" nil
)
248 (define-abbrev fortran-mode-abbrev-table
";il" "implicit logical" nil
)
249 (define-abbrev fortran-mode-abbrev-table
";ir" "implicit real" nil
)
250 (define-abbrev fortran-mode-abbrev-table
";inc" "include" nil
)
251 (define-abbrev fortran-mode-abbrev-table
";in" "integer" nil
)
252 (define-abbrev fortran-mode-abbrev-table
";intr" "intrinsic" nil
)
253 (define-abbrev fortran-mode-abbrev-table
";l" "logical" nil
)
254 (define-abbrev fortran-mode-abbrev-table
";n" "namelist" nil
)
255 (define-abbrev fortran-mode-abbrev-table
";o" "open" nil
) ; was ;op
256 (define-abbrev fortran-mode-abbrev-table
";pa" "parameter" nil
)
257 (define-abbrev fortran-mode-abbrev-table
";pr" "program" nil
)
258 (define-abbrev fortran-mode-abbrev-table
";ps" "pause" nil
)
259 (define-abbrev fortran-mode-abbrev-table
";p" "print" nil
)
260 (define-abbrev fortran-mode-abbrev-table
";rc" "record" nil
)
261 (define-abbrev fortran-mode-abbrev-table
";re" "real" nil
)
262 (define-abbrev fortran-mode-abbrev-table
";r" "read" nil
)
263 (define-abbrev fortran-mode-abbrev-table
";rt" "return" nil
)
264 (define-abbrev fortran-mode-abbrev-table
";rw" "rewind" nil
)
265 (define-abbrev fortran-mode-abbrev-table
";s" "stop" nil
)
266 (define-abbrev fortran-mode-abbrev-table
";sa" "save" nil
)
267 (define-abbrev fortran-mode-abbrev-table
";st" "structure" nil
)
268 (define-abbrev fortran-mode-abbrev-table
";sc" "static" nil
)
269 (define-abbrev fortran-mode-abbrev-table
";su" "subroutine" nil
)
270 (define-abbrev fortran-mode-abbrev-table
";tr" ".true." nil
)
271 (define-abbrev fortran-mode-abbrev-table
";ty" "type" nil
)
272 (define-abbrev fortran-mode-abbrev-table
";vo" "volatile" nil
)
273 (define-abbrev fortran-mode-abbrev-table
";w" "write" nil
)
274 (define-abbrev fortran-mode-abbrev-table
";wh" "where" nil
)
275 (setq abbrevs-changed ac
)))
278 (defun fortran-mode ()
279 "Major mode for editing Fortran code.
280 \\[fortran-indent-line] indents the current Fortran line correctly.
281 DO statements must not share a common CONTINUE.
283 Type ;? or ;\\[help-command] to display a list of built-in\
284 abbrevs for Fortran keywords.
289 Variables controlling indentation style and extra features:
292 Normally nil in Fortran mode. If you want to use comments
293 starting with `!', set this to the string \"!\".
295 Extra indentation within do blocks. (default 3)
297 Extra indentation within if blocks. (default 3)
298 fortran-structure-indent
299 Extra indentation within structure, union, map and interface blocks.
301 fortran-continuation-indent
302 Extra indentation applied to continuation statements. (default 5)
303 fortran-comment-line-extra-indent
304 Amount of extra indentation for text within full-line comments. (default 0)
305 fortran-comment-indent-style
306 nil means don't change indentation of text in full-line comments,
307 fixed means indent that text at `fortran-comment-line-extra-indent' beyond
308 the value of `fortran-minimum-statement-indent-fixed' (for fixed
309 format continuation style) or `fortran-minimum-statement-indent-tab'
310 (for TAB format continuation style).
311 relative means indent at `fortran-comment-line-extra-indent' beyond the
312 indentation for a line of code.
314 fortran-comment-indent-char
315 Single-character string to be inserted instead of space for
316 full-line comment indentation. (default \" \")
317 fortran-minimum-statement-indent-fixed
318 Minimum indentation for Fortran statements in fixed format mode. (def.6)
319 fortran-minimum-statement-indent-tab
320 Minimum indentation for Fortran statements in TAB format mode. (default 9)
321 fortran-line-number-indent
322 Maximum indentation for line numbers. A line number will get
323 less than this much indentation if necessary to avoid reaching
324 column 5. (default 1)
325 fortran-check-all-num-for-matching-do
326 Non-nil causes all numbered lines to be treated as possible \"continue\"
327 statements. (default nil)
328 fortran-blink-matching-if
329 From a Fortran ENDIF statement, blink the matching IF statement.
330 Also, from an ENDDO statement, blink on matching DO [WHILE] statement.
332 fortran-continuation-string
333 Single-character string to be inserted in column 5 of a continuation
334 line. (default \"$\")
335 fortran-comment-region
336 String inserted by \\[fortran-comment-region] at start of each line in
337 region. (default \"c$$$\")
338 fortran-electric-line-number
339 Non-nil causes line number digits to be moved to the correct column
340 as typed. (default t)
341 fortran-break-before-delimiters
342 Non-nil causes `fortran-do-auto-fill' breaks lines before delimiters.
344 fortran-startup-message
345 Set to nil to inhibit message first time Fortran mode is used.
347 Turning on Fortran mode calls the value of the variable `fortran-mode-hook'
348 with no args, if that value is non-nil."
350 (kill-all-local-variables)
351 (if fortran-startup-message
352 (message "Emacs Fortran mode %s. Bugs to %s"
353 fortran-mode-version bug-fortran-mode
))
354 (setq fortran-startup-message nil
)
355 (setq local-abbrev-table fortran-mode-abbrev-table
)
356 (set-syntax-table fortran-mode-syntax-table
)
357 (make-local-variable 'fortran-break-before-delimiters
)
358 (setq fortran-break-before-delimiters t
)
359 (make-local-variable 'indent-line-function
)
360 (setq indent-line-function
'fortran-indent-line
)
361 (make-local-variable 'comment-indent-function
)
362 (setq comment-indent-function
'fortran-comment-hook
)
363 (make-local-variable 'comment-line-start-skip
)
364 (setq comment-line-start-skip
365 "^[Cc*]\\(\\([^ \t\n]\\)\\2\\2*\\)?[ \t]*\\|^#.*")
366 (make-local-variable 'comment-line-start
)
367 (setq comment-line-start
"c")
368 (make-local-variable 'comment-start-skip
)
369 (setq comment-start-skip
"![ \t]*")
370 (make-local-variable 'comment-start
)
371 (setq comment-start nil
)
372 (make-local-variable 'require-final-newline
)
373 (setq require-final-newline t
)
374 (make-local-variable 'abbrev-all-caps
)
375 (setq abbrev-all-caps t
)
376 (make-local-variable 'indent-tabs-mode
)
377 (setq indent-tabs-mode nil
)
378 ;;;(setq abbrev-mode t) ; ?? (abbrev-mode 1) instead??
379 (setq fill-column
72) ; Already local?
380 (use-local-map fortran-mode-map
)
381 (setq mode-name
"Fortran")
382 (setq major-mode
'fortran-mode
)
383 ;;;(make-local-variable 'fortran-tab-mode)
384 (make-local-variable 'fortran-comment-line-extra-indent
)
385 (make-local-variable 'fortran-minimum-statement-indent-fixed
)
386 (make-local-variable 'fortran-minimum-statement-indent-tab
)
387 (make-local-variable 'fortran-column-ruler-fixed
)
388 (make-local-variable 'fortran-column-ruler-tab
)
389 (make-local-variable 'fortran-tab-mode-string
)
390 (setq fortran-tab-mode-string
" TAB-format")
391 (setq indent-tabs-mode
(fortran-analyze-file-format))
392 (run-hooks 'fortran-mode-hook
))
394 (defun fortran-comment-hook ()
396 (skip-chars-backward " \t")
397 (max (+ 1 (current-column))
400 (defun fortran-indent-comment ()
401 "Align or create comment on current line.
402 Existing comments of all types are recognized and aligned.
403 If the line has no comment, a side-by-side comment is inserted and aligned
404 if the value of comment-start is not nil.
405 Otherwise, a separate-line comment is inserted, on this line
406 or on a new line inserted before this line if this line is not blank."
409 ;; Recognize existing comments of either kind.
410 (cond ((looking-at comment-line-start-skip
)
411 (fortran-indent-line))
412 ((fortran-find-comment-start-skip) ; catches any inline comment and
413 ; leaves point after comment-start-skip
414 (if comment-start-skip
415 (progn (goto-char (match-beginning 0))
416 (if (not (= (current-column) (fortran-comment-hook)))
417 (progn (delete-horizontal-space)
418 (indent-to (fortran-comment-hook)))))
419 (end-of-line))) ; otherwise goto end of line or sth else?
420 ;; No existing comment.
421 ;; If side-by-side comments are defined, insert one,
422 ;; unless line is now blank.
423 ((and comment-start
(not (looking-at "^[ \t]*$")))
425 (delete-horizontal-space)
426 (indent-to (fortran-comment-hook))
427 (insert comment-start
))
428 ;; Else insert separate-line comment, making a new line if nec.
430 (if (looking-at "^[ \t]*$")
431 (delete-horizontal-space)
435 (insert comment-line-start
)
436 (insert-char (if (stringp fortran-comment-indent-char
)
437 (aref fortran-comment-indent-char
0)
438 fortran-comment-indent-char
)
439 (- (calculate-fortran-indent) (current-column))))))
441 (defun fortran-comment-region (beg-region end-region arg
)
442 "Comments every line in the region.
443 Puts fortran-comment-region at the beginning of every line in the region.
444 BEG-REGION and END-REGION are args which specify the region boundaries.
445 With non-nil ARG, uncomments the region."
446 (interactive "*r\nP")
447 (let ((end-region-mark (make-marker)) (save-point (point-marker)))
448 (set-marker end-region-mark end-region
)
449 (goto-char beg-region
)
451 (if (not arg
) ;comment the region
452 (progn (insert fortran-comment-region
)
453 (while (and (= (forward-line 1) 0)
454 (< (point) end-region-mark
))
455 (insert fortran-comment-region
)))
456 (let ((com (regexp-quote fortran-comment-region
))) ;uncomment the region
458 (delete-region (point) (match-end 0)))
459 (while (and (= (forward-line 1) 0)
460 (< (point) end-region-mark
))
462 (delete-region (point) (match-end 0))))))
463 (goto-char save-point
)
464 (set-marker end-region-mark nil
)
465 (set-marker save-point nil
)))
467 (defun fortran-abbrev-start ()
468 "Typing ;\\[help-command] or ;? lists all the Fortran abbrevs.
469 Any other key combination is executed normally."
472 (insert last-command-char
)
473 (if (or (eq (setq c
(read-event)) ??
) ;insert char if not equal to `?'
475 (fortran-abbrev-help)
476 (setq unread-command-events
(list c
)))))
478 (defun fortran-abbrev-help ()
479 "List the currently defined abbrevs in Fortran mode."
481 (message "Listing abbrev table...")
482 (display-buffer (fortran-prepare-abbrev-list-buffer))
483 (message "Listing abbrev table...done"))
485 (defun fortran-prepare-abbrev-list-buffer ()
487 (set-buffer (get-buffer-create "*Abbrevs*"))
489 (insert-abbrev-table-description 'fortran-mode-abbrev-table t
)
490 (goto-char (point-min))
491 (set-buffer-modified-p nil
)
493 (get-buffer-create "*Abbrevs*"))
495 (defun fortran-column-ruler ()
496 "Inserts a column ruler momentarily above current line, till next keystroke.
497 The ruler is defined by the value of `fortran-column-ruler-fixed' when in fixed
498 format mode, and `fortran-column-ruler-tab' when in TAB format mode.
499 The key typed is executed unless it is SPC."
501 (momentary-string-display
503 fortran-column-ruler-tab
504 fortran-column-ruler-fixed
)
507 (if (eq (window-start (selected-window))
508 (window-point (selected-window)))
509 (progn (forward-line) (point))
511 nil
"Type SPC or any command to erase ruler."))
513 (defun fortran-window-create ()
514 "Makes the window 72 columns wide.
515 See also `fortran-window-create-momentarily'."
517 (condition-case error
519 (let ((window-min-width 2))
520 (if (< (window-width) (frame-width))
521 (enlarge-window-horizontally (- (frame-width)
523 (split-window-horizontally 73)
525 (switch-to-buffer " fortran-window-extra" t
)
526 (select-window (previous-window))))
527 (error (message "No room for Fortran window.")
530 (defun fortran-window-create-momentarily (&optional arg
)
531 "Momentarily makes the window 72 columns wide.
532 Optional ARG non-nil and non-unity disables the momentary feature.
533 See also `fortran-window-create'."
537 (save-window-excursion
538 (if (not (equal (fortran-window-create) 'error
))
539 (progn (message "Type SPC to continue editing.")
540 (let ((char (read-event)))
541 (or (equal char
(string-to-char " "))
542 (setq unread-command-events
(list char
)))))))
543 (fortran-window-create)))
545 (defun fortran-split-line ()
546 "Break line at point and insert continuation marker and alignment."
548 (delete-horizontal-space)
549 (if (save-excursion (beginning-of-line) (looking-at comment-line-start-skip
))
550 (insert "\n" comment-line-start
" ")
554 (insert-char (fortran-numerical-continuation-char) 1))
555 (insert "\n " fortran-continuation-string
)));Space after \n important
556 (fortran-indent-line)) ;when the cont string is C, c or *.
558 (defun fortran-numerical-continuation-char ()
559 "Return a digit for tab-digit style of continuation lines.
560 If, previous line is a tab-digit continuation line, returns that digit
561 plus one. Otherwise return 1. Zero not allowed."
564 (if (looking-at "\t[1-9]")
565 (+ ?
1 (%
(- (char-after (+ (point) 1)) ?
0) 9))
568 (defun delete-horizontal-regexp (chars)
569 "Delete all characters in CHARS around point.
570 CHARS is like the inside of a [...] in a regular expression
571 except that ] is never special and \ quotes ^, - or \."
573 (skip-chars-backward chars
)
574 (delete-region (point) (progn (skip-chars-forward chars
) (point))))
576 (defun fortran-electric-line-number (arg)
577 "Self insert, but if part of a Fortran line number indent it automatically.
578 Auto-indent does not happen if a numeric arg is used."
580 (if (or arg
(not fortran-electric-line-number
))
582 (self-insert-command (prefix-numeric-value arg
))
583 (self-insert-command 1))
584 (if (or (and (= 5 (current-column))
587 (looking-at " ")));In col 5 with only spaces to left.
588 (and (= (if indent-tabs-mode
589 fortran-minimum-statement-indent-tab
590 fortran-minimum-statement-indent-fixed
) (current-column))
593 (looking-at "\t"));In col 8 with a single tab to the left.
594 (not (or (eq last-command
'fortran-indent-line
)
596 'fortran-indent-new-line
))))
598 (re-search-backward "[^ \t0-9]"
602 t
)) ;not a line number
603 (looking-at "[0-9]") ;within a line number
605 (self-insert-command (prefix-numeric-value arg
))
606 (skip-chars-backward " \t")
607 (insert last-command-char
)
608 (fortran-indent-line))))
610 (defun beginning-of-fortran-subprogram ()
611 "Moves point to the beginning of the current Fortran subprogram."
613 (let ((case-fold-search t
))
614 (beginning-of-line -
1)
615 (re-search-backward "^[ \t0-9]*end\\b[ \t]*[^ \t=(a-z]" nil
'move
)
616 (if (looking-at "^[ \t0-9]*end\\b[ \t]*[^ \t=(a-z]")
619 (defun end-of-fortran-subprogram ()
620 "Moves point to the end of the current Fortran subprogram."
622 (let ((case-fold-search t
))
623 (beginning-of-line 2)
624 (re-search-forward "^[ \t0-9]*end\\b[ \t]*[^ \t=(a-z]" nil
'move
)
625 (goto-char (match-beginning 0))
628 (defun mark-fortran-subprogram ()
629 "Put mark at end of Fortran subprogram, point at beginning.
630 The marks are pushed."
632 (end-of-fortran-subprogram)
634 (beginning-of-fortran-subprogram))
636 (defun fortran-previous-statement ()
637 "Moves point to beginning of the previous Fortran statement.
638 Returns `first-statement' if that statement is the first
639 non-comment Fortran statement in the file, and nil otherwise."
641 (let (not-first-statement continue-test
)
645 (not (looking-at comment-line-start-skip
))
647 (concat "[ \t]*" (regexp-quote fortran-continuation-string
)))
648 (or (looking-at " [^ 0\n]")
649 (looking-at "\t[1-9]")))))
650 (while (and (setq not-first-statement
(= (forward-line -
1) 0))
651 (or (looking-at comment-line-start-skip
)
652 (looking-at "[ \t]*$")
653 (looking-at " [^ 0\n]")
654 (looking-at "\t[1-9]")
655 (looking-at (concat "[ \t]*" comment-start-skip
)))))
656 (cond ((and continue-test
657 (not not-first-statement
))
658 (message "Incomplete continuation statement."))
660 (fortran-previous-statement))
661 ((not not-first-statement
)
664 (defun fortran-next-statement ()
665 "Moves point to beginning of the next Fortran statement.
666 Returns `last-statement' if that statement is the last
667 non-comment Fortran statement in the file, and nil otherwise."
669 (let (not-last-statement)
671 (while (and (setq not-last-statement
672 (and (= (forward-line 1) 0)
674 (or (looking-at comment-line-start-skip
)
675 (looking-at "[ \t]*$")
676 (looking-at " [^ 0\n]")
677 (looking-at "\t[1-9]")
678 (looking-at (concat "[ \t]*" comment-start-skip
)))))
679 (if (not not-last-statement
)
682 (defun fortran-blink-matching-if ()
683 "From a Fortran ENDIF statement, blink the matching IF statement."
684 (let ((count 1) (top-of-window (window-start)) matching-if
685 (endif-point (point)) message
)
686 (if (save-excursion (beginning-of-line)
687 (skip-chars-forward " \t0-9")
688 (looking-at "end[ \t]*if\\b"))
691 (while (and (not (= count
0))
692 (not (eq (fortran-previous-statement)
695 "^[ \t0-9]*end\\b[ \t]*[^ \t=(a-z]")))
696 ; Keep local to subprogram
697 (skip-chars-forward " \t0-9")
698 (cond ((looking-at "if[ \t]*(")
701 (looking-at ".*)[ \t]*then\\b[ \t]*[^ \t(=a-z0-9]")
702 (let (then-test);multi-line if-then
704 (and (= (forward-line 1) 0)
705 ;search forward for then
706 (or (looking-at " [^ 0\n]")
707 (looking-at "\t[1-9]"))
712 ".*then\\b[ \t]*[^ \t(=a-z0-9]")))))
714 (setq count
(- count
1)))))
715 ((looking-at "end[ \t]*if\\b")
716 (setq count
(+ count
1)))))
717 (if (not (= count
0))
718 (setq message
"No matching if.")
719 (if (< (point) top-of-window
)
720 (setq message
(concat "Matches " (buffer-substring
721 (progn (beginning-of-line)
725 (setq matching-if
(point)))))
727 (message "%s" message
)
728 (goto-char matching-if
)
730 (goto-char endif-point
))))))
732 (defun fortran-blink-matching-do ()
733 ;; From a Fortran ENDDO statement, blink on the matching DO or DO WHILE
734 ;; statement. This is basically copied from fortran-blink-matching-if.
735 (let ((count 1) (top-of-window (window-start)) matching-do
736 (enddo-point (point)) message
)
737 (if (save-excursion (beginning-of-line)
738 (skip-chars-forward " \t0-9")
739 (looking-at "end[ \t]*do\\b"))
742 (while (and (not (= count
0))
743 (not (eq (fortran-previous-statement)
746 "^[ \t0-9]*end\\b[ \t]*[^ \t=(a-z]")))
747 ; Keep local to subprogram
748 (skip-chars-forward " \t0-9")
749 (cond ((looking-at "do[ \t]+")
750 (setq count
(- count
1)))
751 ((looking-at "end[ \t]*do\\b")
752 (setq count
(+ count
1)))))
753 (if (not (= count
0))
754 (setq message
"No matching do.")
755 (if (< (point) top-of-window
)
756 (setq message
(concat "Matches " (buffer-substring
757 (progn (beginning-of-line)
761 (setq matching-do
(point)))))
763 (message "%s" message
)
764 (goto-char matching-do
)
766 (goto-char enddo-point
))))))
768 (defun fortran-indent-line ()
769 "Indents current Fortran line based on its contents and on previous lines."
771 (let ((cfi (calculate-fortran-indent)))
774 (if (or (not (= cfi
(fortran-current-line-indentation)))
775 (and (re-search-forward "^[ \t]*[0-9]+" (+ (point) 4) t
)
776 (not (fortran-line-number-indented-correctly-p))))
777 (fortran-indent-to-column cfi
)
779 (if (and (not (looking-at comment-line-start-skip
))
780 (fortran-find-comment-start-skip))
781 (fortran-indent-comment))))
782 ;; Never leave point in left margin.
783 (if (< (current-column) cfi
)
784 (move-to-column cfi
))
785 (if (and auto-fill-function
786 (> (save-excursion (end-of-line) (current-column)) fill-column
))
789 (fortran-do-auto-fill)))
790 (if fortran-blink-matching-if
792 (fortran-blink-matching-if)
793 (fortran-blink-matching-do)))))
795 (defun fortran-indent-new-line ()
796 "Reindent the current Fortran line, insert a newline and indent the newline.
797 An abbrev before point is expanded if `abbrev-mode' is non-nil."
799 (if abbrev-mode
(expand-abbrev))
802 (skip-chars-forward " \t")
803 (if (or (looking-at "[0-9]") ;Reindent only where it is most
804 (looking-at "end") ;likely to be necessary
806 (looking-at (regexp-quote fortran-continuation-string
)))
807 (fortran-indent-line)))
809 (fortran-indent-line))
811 (defun fortran-indent-subprogram ()
812 "Properly indents the Fortran subprogram which contains point."
815 (mark-fortran-subprogram)
816 (message "Indenting subprogram...")
817 (indent-region (point) (mark) nil
))
818 (message "Indenting subprogram...done."))
820 (defun calculate-fortran-indent ()
821 "Calculates the Fortran indent column based on previous lines."
822 (let (icol first-statement
(case-fold-search t
)
823 (fortran-minimum-statement-indent
825 fortran-minimum-statement-indent-tab
826 fortran-minimum-statement-indent-fixed
)))
828 (setq first-statement
(fortran-previous-statement))
830 (setq icol fortran-minimum-statement-indent
)
832 (if (= (point) (point-min))
833 (setq icol fortran-minimum-statement-indent
)
834 (setq icol
(fortran-current-line-indentation)))
835 (skip-chars-forward " \t0-9")
836 (cond ((looking-at "if[ \t]*(")
837 (if (or (looking-at ".*)[ \t]*then\\b[ \t]*[^ \t_$(=a-z0-9]")
838 (let (then-test) ;multi-line if-then
839 (while (and (= (forward-line 1) 0)
840 ;;search forward for then
841 (or (looking-at " [^ 0\n]")
842 (looking-at "\t[1-9]"))
843 (not (setq then-test
(looking-at
845 *[^ \t_$(=a-z0-9]")))))
847 (setq icol
(+ icol fortran-if-indent
))))
848 ((looking-at "\\(else\\|elseif\\)\\b")
849 (setq icol
(+ icol fortran-if-indent
)))
850 ((looking-at "select[ \t]*case[ \t](.*)\\b")
851 (setq icol
(+ icol fortran-if-indent
)))
852 ((looking-at "case[ \t]*(.*)[ \t]*\n")
853 (setq icol
(+ icol fortran-if-indent
)))
854 ((looking-at "case[ \t]*default\\b")
855 (setq icol
(+ icol fortran-if-indent
)))
856 ((looking-at "\\(otherwise\\|else[ \t]*where\\)\\b")
857 (setq icol
(+ icol fortran-if-indent
)))
858 ((looking-at "where[ \t]*(.*)[ \t]*\n")
859 (setq icol
(+ icol fortran-if-indent
)))
860 ((looking-at "do\\b")
861 (setq icol
(+ icol fortran-do-indent
)))
863 "\\(structure\\|union\\|map\\|interface\\)\\b[ \t]*[^ \t=(a-z]")
864 (setq icol
(+ icol fortran-structure-indent
)))
865 ((looking-at "end\\b[ \t]*[^ \t=(a-z]")
866 ;; Previous END resets indent to minimum
867 (setq icol fortran-minimum-statement-indent
))))))
870 (cond ((looking-at "[ \t]*$"))
871 ((looking-at comment-line-start-skip
)
872 (cond ((eq fortran-comment-indent-style
'relative
)
873 (setq icol
(+ icol fortran-comment-line-extra-indent
)))
874 ((eq fortran-comment-indent-style
'fixed
)
875 (setq icol
(+ fortran-minimum-statement-indent
876 fortran-comment-line-extra-indent
))))
877 (setq fortran-minimum-statement-indent
0))
878 ((or (looking-at (concat "[ \t]*"
880 fortran-continuation-string
)))
881 (looking-at " [^ 0\n]")
882 (looking-at "\t[1-9]"))
883 (setq icol
(+ icol fortran-continuation-indent
)))
884 ((looking-at "[ \t]*#") ; Check for cpp directive.
885 (setq fortran-minimum-statement-indent
0 icol
0))
887 ((and fortran-check-all-num-for-matching-do
888 (looking-at "[ \t]*[0-9]+")
889 (fortran-check-for-matching-do))
890 (setq icol
(- icol fortran-do-indent
)))
892 (skip-chars-forward " \t0-9")
893 (cond ((looking-at "end[ \t]*if\\b")
894 (setq icol
(- icol fortran-if-indent
)))
895 ((looking-at "\\(else\\|elseif\\)\\b")
896 (setq icol
(- icol fortran-if-indent
)))
897 ((looking-at "case[ \t]*(.*)[ \t]*\n")
898 (setq icol
(- icol fortran-if-indent
)))
899 ((looking-at "case[ \t]*default\\b")
900 (setq icol
(- icol fortran-if-indent
)))
901 ((looking-at "\\(otherwise\\|else[ \t]*where\\)\\b")
902 (setq icol
(- icol fortran-if-indent
)))
903 ((looking-at "end[ \t]*where\\b")
904 (setq icol
(- icol fortran-if-indent
)))
905 ((and (looking-at "continue\\b")
906 (fortran-check-for-matching-do))
907 (setq icol
(- icol fortran-do-indent
)))
908 ((looking-at "end[ \t]*do\\b")
909 (setq icol
(- icol fortran-do-indent
)))
912 \\(structure\\|union\\|map\\|interface\\)\\b[ \t]*[^ \t=(a-z]")
913 (setq icol
(- icol fortran-structure-indent
)))
915 "end[ \t]*select\\b[ \t]*[^ \t=(a-z]")
916 (setq icol
(- icol fortran-if-indent
)))
917 ((and (looking-at "end\\b[ \t]*[^ \t=(a-z]")
918 (not (= icol fortran-minimum-statement-indent
)))
919 (message "Warning: `end' not in column %d. Probably\
920 an unclosed block." fortran-minimum-statement-indent
))))))
921 (max fortran-minimum-statement-indent icol
)))
923 (defun fortran-current-line-indentation ()
924 "Indentation of current line, ignoring Fortran line number or continuation.
925 This is the column position of the first non-whitespace character
926 aside from the line number and/or column 5/8 line-continuation character.
927 For comment lines, returns indentation of the first
928 non-indentation text within the comment."
931 (cond ((looking-at comment-line-start-skip
)
932 (goto-char (match-end 0))
934 (if (stringp fortran-comment-indent-char
)
935 fortran-comment-indent-char
936 (char-to-string fortran-comment-indent-char
))))
937 ((or (looking-at " [^ 0\n]")
938 (looking-at "\t[1-9]"))
939 (goto-char (match-end 0)))
941 ;; Move past line number.
942 (skip-chars-forward "[ \t0-9]");From Uli
944 ;; Move past whitespace.
945 (skip-chars-forward " \t")
948 (defun fortran-indent-to-column (col)
949 "Indents current line with spaces to column COL.
950 notes: 1) A non-zero/non-blank character in column 5 indicates a continuation
951 line, and this continuation character is retained on indentation;
952 2) If `fortran-continuation-string' is the first non-whitespace
953 character, this is a continuation line;
954 3) A non-continuation line which has a number as the first
955 non-whitespace character is a numbered line.
956 4) A TAB followed by a digit indicates a continuation line."
959 (if (looking-at comment-line-start-skip
)
960 (if fortran-comment-indent-style
961 (let ((char (if (stringp fortran-comment-indent-char
)
962 (aref fortran-comment-indent-char
0)
963 fortran-comment-indent-char
)))
964 (goto-char (match-end 0))
965 (delete-horizontal-regexp (concat " \t" (char-to-string char
)))
966 (insert-char char
(- col
(current-column)))))
967 (if (looking-at "\t[1-9]")
969 (goto-char (match-end 0))
972 (insert fortran-continuation-string
))
973 (if (looking-at " [^ 0\n]")
975 (progn (delete-char 6)
977 (insert-char (fortran-numerical-continuation-char) 1))
979 (delete-horizontal-space)
980 ;; Put line number in columns 0-4
981 ;; or put continuation character in column 5.
983 ((looking-at (regexp-quote fortran-continuation-string
))
988 fortran-minimum-statement-indent-tab
989 fortran-minimum-statement-indent-fixed
))
991 (insert-char (fortran-numerical-continuation-char) 1))
994 ((looking-at "[0-9]+")
995 (let ((extra-space (- 5 (- (match-end 0) (point)))))
996 (if (< extra-space
0)
997 (message "Warning: line number exceeds 5-digit limit.")
998 (indent-to (min fortran-line-number-indent extra-space
))))
999 (skip-chars-forward "0-9")))))
1000 ;; Point is now after any continuation character or line number.
1001 ;; Put body of statement where specified.
1002 (delete-horizontal-space)
1004 ;; Indent any comment following code on the same line.
1005 (if (and comment-start-skip
1006 (fortran-find-comment-start-skip))
1007 (progn (goto-char (match-beginning 0))
1008 (if (not (= (current-column) (fortran-comment-hook)))
1009 (progn (delete-horizontal-space)
1010 (indent-to (fortran-comment-hook)))))))))
1012 (defun fortran-line-number-indented-correctly-p ()
1013 "Return t if current line's line number is correctly indented.
1014 Do not call if there is no line number."
1017 (skip-chars-forward " \t")
1018 (and (<= (current-column) fortran-line-number-indent
)
1019 (or (= (current-column) fortran-line-number-indent
)
1020 (progn (skip-chars-forward "0-9")
1021 (= (current-column) 5))))))
1023 (defun fortran-check-for-matching-do ()
1024 "When called from a numbered statement, returns t if matching DO is found.
1025 Otherwise return a nil."
1027 (case-fold-search t
))
1030 (if (looking-at "[ \t]*[0-9]+")
1032 (skip-chars-forward " \t")
1033 (skip-chars-forward "0") ;skip past leading zeros
1034 (setq charnum
(buffer-substring (point)
1035 (progn (skip-chars-forward "0-9")
1038 (and (re-search-backward
1040 "\\(^[ \t0-9]*end\\b[ \t]*[^ \t=(a-z]\\)\\|\\(^[ \t0-9]*do\
1042 charnum
"\\b\\)\\|\\(^[ \t]*0*" charnum
"\\b\\)")
1044 (looking-at (concat "^[ \t0-9]*do[ \t]*0*" charnum
))))))))
1046 (defun fortran-find-comment-start-skip ()
1047 "Move to past `comment-start-skip' found on current line.
1048 Return t if `comment-start-skip' found, nil if not."
1049 ;;; In order to move point only if comment-start-skip is found,
1050 ;;; this one uses a lot of save-excursions. Note that re-search-forward
1051 ;;; moves point even if comment-start-skip is inside a string-constant.
1052 ;;; Some code expects certain values for match-beginning and end
1054 (let ((save-match-beginning) (save-match-end))
1056 (re-search-forward comment-start-skip
1057 (save-excursion (end-of-line) (point)) t
))
1059 (setq save-match-beginning
(match-beginning 0))
1060 (setq save-match-end
(match-end 0))
1061 (if (fortran-is-in-string-p (match-beginning 0))
1064 (goto-char save-match-end
)
1065 (fortran-find-comment-start-skip)) ; recurse for rest of line
1067 (goto-char save-match-beginning
)
1068 (re-search-forward comment-start-skip
1069 (save-excursion (end-of-line) (point)) t
)
1070 (goto-char (match-end 0))
1074 ;;;From: ralf@up3aud1.gwdg.de (Ralf Fassel)
1075 ;;; Test if TAB format continuation lines work.
1076 (defun fortran-is-in-string-p (where)
1077 "Return non-nil if POS (a buffer position) is inside a Fortran string,
1082 ((bolp) nil
) ; bol is never inside a string
1083 ((save-excursion ; comment lines too
1084 (beginning-of-line)(looking-at comment-line-start-skip
)) nil
)
1085 (t (let (;; ok, serious now. Init some local vars:
1086 (parse-state '(0 nil nil nil nil nil
0))
1087 (quoted-comment-start (if comment-start
1088 (regexp-quote comment-start
)))
1093 ;; move to start of current statement
1094 (fortran-next-statement)
1095 (fortran-previous-statement)
1096 ;; now parse up to WHERE
1098 (if (or ;; skip to next line if:
1100 (looking-at comment-line-start-skip
)
1101 ;; - at end of line?
1103 ;; - not in a string and after comment-start?
1104 (and (not (nth 3 parse-state
))
1106 (equal comment-start
1107 (char-to-string (preceding-char)))))
1108 ;; get around a bug in forward-line in versions <= 18.57
1109 (if (or (> (forward-line 1) 0) (eobp))
1110 (setq not-done nil
))
1112 ;; if we are at beginning of code line, skip any
1113 ;; whitespace, labels and tab continuation markers.
1114 (if (bolp) (skip-chars-forward " \t0-9"))
1115 ;; if we are in column <= 5 now, check for continuation char
1116 (cond ((= 5 (current-column)) (forward-char 1))
1117 ((and (< (current-column) 5)
1118 (equal fortran-continuation-string
1119 (char-to-string (following-char)))
1121 ;; find out parse-limit from here
1122 (setq end-of-line
(save-excursion (end-of-line)(point)))
1123 (setq parse-limit
(min where end-of-line
))
1124 ;; parse max up to comment-start, if non-nil and in current line
1127 (if (re-search-forward quoted-comment-start end-of-line t
)
1128 (setq parse-limit
(min (point) parse-limit
)))))
1129 ;; now parse if still in limits
1130 (if (< (point) where
)
1131 (setq parse-state
(parse-partial-sexp
1132 (point) parse-limit nil nil parse-state
))
1133 (setq not-done nil
))
1136 (nth 3 parse-state
))))))
1138 (defun fortran-auto-fill-mode (arg)
1139 "Toggle fortran-auto-fill mode.
1140 With ARG, turn `fortran-auto-fill' mode on iff ARG is positive.
1141 In `fortran-auto-fill' mode, inserting a space at a column beyond `fill-column'
1142 automatically breaks the line at a previous space."
1144 (prog1 (setq auto-fill-function
1146 (not auto-fill-function
)
1147 (> (prefix-numeric-value arg
) 0))
1148 'fortran-indent-line
1151 (set-buffer-modified-p (buffer-modified-p))))
1153 (defun fortran-do-auto-fill ()
1155 (let* ((opoint (point))
1156 (bol (save-excursion (beginning-of-line) (point)))
1157 (eol (save-excursion (end-of-line) (point)))
1158 (bos (min eol
(+ bol
(fortran-current-line-indentation))))
1162 (if (looking-at comment-line-start-skip
)
1163 nil
; OK to break quotes on comment lines.
1164 (move-to-column fill-column
)
1165 (cond ((fortran-is-in-string-p (point))
1166 (save-excursion (re-search-backward "[^']'[^']" bol t
)
1167 (if fortran-break-before-delimiters
1172 ;; decide where to split the line. If a position for a quoted
1173 ;; string was found above then use that, else break the line
1174 ;; before the last delimiter.
1175 ;; Delimiters are whitespace, commas, and operators.
1176 ;; Will break before a pair of *'s.
1181 (move-to-column (1+ fill-column
))
1182 (skip-chars-backward "^ \t\n,'+-/*=)"
1183 ;;; (if fortran-break-before-delimiters
1184 ;;; "^ \t\n,'+-/*=" "^ \t\n,'+-/*=)")
1186 (if (<= (point) (1+ bos
))
1188 (move-to-column (1+ fill-column
))
1189 ;;;what is this doing???
1190 (if (not (re-search-forward "[\t\n,'+-/*)=]" eol t
))
1193 (re-search-forward "[ \t]" opoint t
)
1195 (if (looking-at "'")
1197 (skip-chars-backward " \t\*")))
1198 (if fortran-break-before-delimiters
1202 ;; if we are in an in-line comment, don't break unless the
1203 ;; line of code is longer than it should be. Otherwise
1204 ;; break the line at the column computed above.
1206 ;; Need to use fortran-find-comment-start-skip to make sure that quoted !'s
1207 ;; don't prevent a break.
1208 (if (not (or (save-excursion
1209 (if (and (re-search-backward comment-start-skip bol t
)
1210 (not (fortran-is-in-string-p (point))))
1212 (skip-chars-backward " \t")
1213 (< (current-column) (1+ fill-column
)))))
1215 (goto-char fill-point
)
1217 (if (> (save-excursion
1218 (goto-char fill-point
) (current-column))
1220 (progn (goto-char fill-point
)
1221 (fortran-break-line))
1223 (if (> (save-excursion
1224 (goto-char fill-point
)
1226 (+ (calculate-fortran-indent) fortran-continuation-indent
))
1228 (goto-char fill-point
)
1229 (fortran-break-line))))))
1231 (defun fortran-break-line ()
1232 (let ((opoint (point))
1233 (bol (save-excursion (beginning-of-line) (point)))
1234 (eol (save-excursion (end-of-line) (point)))
1235 (comment-string nil
))
1238 (if (and comment-start-skip
(fortran-find-comment-start-skip))
1240 (re-search-backward comment-start-skip bol t
)
1241 (setq comment-string
(buffer-substring (point) eol
))
1242 (delete-region (point) eol
))))
1243 ;;; Forward line 1 really needs to go to next non white line
1244 (if (save-excursion (forward-line 1)
1245 (or (looking-at " [^ 0\n]")
1246 (looking-at "\t[1-9]")))
1249 (delete-indentation)
1251 (delete-horizontal-space)
1252 (fortran-do-auto-fill))
1253 (fortran-split-line))
1258 (delete-horizontal-space)
1259 (indent-to (fortran-comment-hook))
1260 (insert comment-string
)))))
1262 (defun fortran-analyze-file-format ()
1263 "Returns nil if fixed format is used, t if TAB formatting is used.
1264 Use `fortran-tab-mode-default' if no non-comment statements are found in the
1265 file before the end or the first `fortran-analyze-depth' lines."
1268 (goto-char (point-min))
1274 (> i fortran-analyze-depth
)))
1278 ((looking-at "\t") t
)
1279 ((looking-at " ") nil
)
1280 (fortran-tab-mode-default t
)
1283 (or (assq 'fortran-tab-mode-string minor-mode-alist
)
1284 (setq minor-mode-alist
(cons
1285 '(fortran-tab-mode-string
1286 (indent-tabs-mode fortran-tab-mode-string
))
1291 ;;; fortran.el ends here