code.delx.au - gnu-emacs/blob - lisp/progmodes/fortran.el

   1 ;;; fortran.el --- Fortran mode for GNU Emacs
   2
   3 ;;; Copyright (c) 1986, 1993, 1994, 1995 Free Software Foundation, Inc.
   4
   5 ;; Author: Michael D. Prange <prange@erl.mit.edu>
   6 ;; Maintainer: bug-fortran-mode@erl.mit.edu
   7 ;; Version 1.30.5.1 (Sept 16, 1994)
   8 ;; Keywords: languages
   9
  10 ;; This file is part of GNU Emacs.
  11
  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)
  15 ;; any later version.
  16
  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.
  21
  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.
  25
  26 ;;; Commentary:
  27
  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.
  33
  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.
  38
  39 ;;; This file may be used with GNU Emacs version 18.xx if the following
  40 ;;; variable and function substitutions are made.
  41 ;;;  Replace:
  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)
  46
  47 ;;; Bugs to bug-fortran-mode@erl.mit.edu
  48
  49 (defconst fortran-mode-version "version 1.30.5.1")
  50
  51 ;;; Code:
  52
  53 ;;;###autoload
  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.")
  59
  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.")
  63
  64 (defvar fortran-do-indent 3
  65   "*Extra indentation applied to DO blocks.")
  66
  67 (defvar fortran-if-indent 3
  68   "*Extra indentation applied to IF blocks.")
  69
  70 (defvar fortran-structure-indent 3
  71   "*Extra indentation applied to STRUCTURE, UNION, MAP and INTERFACE blocks.")
  72
  73 (defvar fortran-continuation-indent 5
  74   "*Extra indentation applied to Fortran continuation lines.")
  75
  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'.")
  83
  84 (defvar fortran-comment-line-extra-indent 0
  85   "*Amount of extra indentation for text within full-line comments.")
  86
  87 (defvar comment-line-start nil
  88   "*Delimiter inserted to start new full-line comment.")
  89
  90 (defvar comment-line-start-skip nil
  91   "*Regexp to match the start of a full-line comment.")
  92
  93 (defvar fortran-minimum-statement-indent-fixed 6
  94   "*Minimum statement indentation for fixed format continuation style.")
  95
  96 (defvar fortran-minimum-statement-indent-tab (max tab-width 6)
  97   "*Minimum statement indentation for TAB format continuation style.")
  98
  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.
 104 Normally a space.")
 105
 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.")
 109
 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.")
 112
 113 (defvar fortran-blink-matching-if nil
 114   "*Non-nil causes \\[fortran-indent-line] on ENDIF statement to blink on matching IF.
 115 Also, from an ENDDO statement blink on matching DO [WHILE] statement.")
 116
 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.
 123 Normally $.")
 124
 125 (defvar fortran-comment-region "c$$$"
 126   "*String inserted by \\[fortran-comment-region]\
 127  at start of each line in region.")
 128
 129 (defvar fortran-electric-line-number t
 130   "*Non-nil causes line number digits to be moved to the correct column as\
 131  typed.")
 132
 133 (defvar fortran-startup-message t
 134   "*Non-nil displays a startup message when Fortran mode is first called.")
 135
 136 (defvar fortran-column-ruler-fixed
 137   "0   4 6  10        20        30        40        5\
 138 \0        60        70\n\
 139 \[   ]|{   |    |    |    |    |    |    |    |    \
 140 \|    |    |    |    |}\n"
 141   "*String displayed above current line by \\[fortran-column-ruler].
 142 This variable used in fixed format mode.")
 143
 144 (defvar fortran-column-ruler-tab
 145   "0       810        20        30        40        5\
 146 \0        60        70\n\
 147 \[   ]|  { |    |    |    |    |    |    |    |    \
 148 \|    |    |    |    |}\n"
 149   "*String displayed above current line by \\[fortran-column-ruler].
 150 This variable used in TAB format mode.")
 151
 152 (defconst bug-fortran-mode "bug-fortran-mode@erl.mit.edu"
 153   "Address of mailing list for Fortran mode bugs.")
 154
 155 (defvar fortran-mode-syntax-table nil
 156   "Syntax table in use in Fortran mode buffers.")
 157
 158 (defvar fortran-analyze-depth 100
 159   "Number of lines to scan to determine whether to use fixed or TAB format\
 160  style.")
 161
 162 (defvar fortran-break-before-delimiters t
 163   "*Non-nil causes `fortran-do-auto-fill' to break lines before delimiters.")
 164
 165 (if fortran-mode-syntax-table
 166     ()
 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 ?\! "<" fortran-mode-syntax-table)
 181   (modify-syntax-entry ?\n ">" fortran-mode-syntax-table))
 182
 183 ;; Comments are real pain in Fortran because there is no way to represent the
 184 ;; standard comment syntax in an Emacs syntax table (we can for VAX-style).
 185 ;; Therefore an unmatched quote in a standard comment will throw fontification
 186 ;; off on the wrong track.  So we do syntactic fontification with regexps.
 187
 188 ;; Regexps done by simon@gnu with help from Ulrik Dickow <dickow@nbi.dk> and
 189 ;; probably others Si's forgotten about (sorry).
 190
 191 (defconst fortran-font-lock-keywords-1
 192   (let ((comment-chars "c!*"))
 193     (list
 194      ;;
 195      ;; Fontify comments and strings.  We assume that strings cannot be quoted.
 196      (cons (concat "^[" comment-chars "].*") 'font-lock-comment-face)
 197      '(fortran-match-!-comment . font-lock-comment-face)
 198      (list (concat "^[^" comment-chars "\t]" (make-string 71 ?.) "\\(.*\\)")
 199            '(1 font-lock-comment-face))
 200      '("'[^'\n]*'?" . font-lock-string-face)
 201      ;;
 202      ;; Program, subroutine and function declarations, plus calls.
 203      (list (concat "\\<\\(block[ \t]*data\\|call\\|entry\\|function\\|"
 204                    "program\\|subroutine\\)\\>[ \t]*\\(\\sw+\\)?")
 205            '(1 font-lock-keyword-face)
 206            '(2 font-lock-function-name-face nil t))))
 207   "Subdued level highlighting for Fortran mode.")
 208
 209 (defconst fortran-font-lock-keywords-2
 210   (append fortran-font-lock-keywords-1
 211    (let ((type-types
 212 ;     (make-regexp
 213 ;      (let ((simple-types '("character" "byte" "integer" "logical"
 214 ;                           "none" "real" "complex"
 215 ;                           "double[ \t]*precision" "double[ \t]*complex"))
 216 ;           (structured-types '("structure" "union" "map"))
 217 ;           (other-types '("record" "dimension" "parameter" "common" "save"
 218 ;                          "external" "intrinsic" "data" "equivalence")))
 219 ;       (append
 220 ;        (mapcar (lambda (x) (concat "implicit[ \t]*" x)) simple-types)
 221 ;        simple-types
 222 ;        (mapcar (lambda (x) (concat "end[ \t]*" x)) structured-types)
 223 ;        structured-types
 224 ;        other-types)))
 225           (concat "byte\\|c\\(haracter\\|om\\(mon\\|plex\\)\\)\\|"
 226                   "d\\(ata\\|imension\\|ouble"
 227                   "[ \t]*\\(complex\\|precision\\)\\)\\|"
 228                   "e\\(nd[ \t]*\\(map\\|structure\\|union\\)\\|"
 229                   "quivalence\\|xternal\\)\\|"
 230                   "i\\(mplicit[ \t]*\\(byte\\|"
 231                   "c\\(haracter\\|omplex\\)\\|"
 232                   "double[ \t]*\\(complex\\|precision\\)\\|"
 233                   "integer\\|logical\\|none\\|real\\)\\|"
 234                   "nt\\(eger\\|rinsic\\)\\)\\|"
 235                   "logical\\|map\\|none\\|parameter\\|re\\(al\\|cord\\)\\|"
 236                   "s\\(ave\\|tructure\\)\\|union"))
 237          (fkeywords
 238 ;         ("continue" "format" "end" "enddo" "if" "then" "else" "endif"
 239 ;          "elseif" "while" "inquire" "stop" "return" "include" "open"
 240 ;          "close" "read" "write" "format" "print")
 241           (concat "c\\(lose\\|ontinue\\)\\|"
 242                   "e\\(lse\\(\\|if\\)\\|nd\\(\\|do\\|if\\)\\)\\|format\\|"
 243                   "i\\(f\\|n\\(clude\\|quire\\)\\)\\|open\\|print\\|"
 244                   "re\\(ad\\|turn\\)\\|stop\\|then\\|w\\(hile\\|rite\\)"))
 245          (flogicals
 246 ;         ("and" "or" "not" "lt" "le" "eq" "ge" "gt" "ne" "true" "false")
 247           "and\\|eq\\|false\\|g[et]\\|l[et]\\|n\\(e\\|ot\\)\\|or\\|true"))
 248      (list
 249       ;;
 250       ;; Fontify types and variable names (but not length specs or `/'s).
 251       (list (concat "\\<\\(" type-types "\\)\\>[0-9 \t/*]*\\(\\sw+\\)?")
 252             '(1 font-lock-type-face)
 253             '(15 font-lock-variable-name-face nil t))
 254       ;;
 255       ;; Fontify all builtin keywords (except logical, do and goto; see below).
 256       (concat "\\<\\(" fkeywords "\\)\\>")
 257       ;;
 258       ;; Fontify all builtin operators.
 259       (concat "\\.\\(" flogicals "\\)\\.")
 260       ;;
 261       ;; Fontify do/goto keywords and targets, and goto tags.
 262       (list "\\<\\(do\\|go *to\\)\\>[ \t]*\\([0-9]+\\)?"
 263             '(1 font-lock-keyword-face)
 264             '(2 font-lock-reference-face nil t))
 265       (cons "^ *\\([0-9]+\\)" 'font-lock-reference-face))))
 266   "Medium level highlighting for Fortran mode.")
 267
 268 (defconst fortran-font-lock-keywords-3
 269   (append fortran-font-lock-keywords-2
 270    (list
 271     ;;
 272     ;; Fontify goto-like `err=label'/`end=label' in read/write statements.
 273     (list ", *\\(e\\(nd\\|rr\\)\\)\\> *\\(= *\\([0-9]+\\)\\)?"
 274           '(1 font-lock-keyword-face)
 275           '(4 font-lock-reference-face nil t))
 276     ;;
 277     ;; Highlight a standard continuation character and in a TAB-formatted line.
 278     '("^     \\([^ 0]\\)" 1 font-lock-string-face)
 279     '("^\t\\([1-9]\\)" 1 font-lock-string-face)))
 280   "Gaudy level highlighting for Fortran mode.")
 281
 282 (defvar fortran-font-lock-keywords fortran-font-lock-keywords-1
 283   "Default expressions to highlight in Fortran mode.")
 284
 285 (defvar fortran-mode-map ()
 286   "Keymap used in Fortran mode.")
 287 (if fortran-mode-map
 288     ()
 289   (setq fortran-mode-map (make-sparse-keymap))
 290   (define-key fortran-mode-map ";" 'fortran-abbrev-start)
 291   (define-key fortran-mode-map "\C-c;" 'fortran-comment-region)
 292   (define-key fortran-mode-map "\e\C-a" 'beginning-of-fortran-subprogram)
 293   (define-key fortran-mode-map "\e\C-e" 'end-of-fortran-subprogram)
 294   (define-key fortran-mode-map "\e;" 'fortran-indent-comment)
 295   (define-key fortran-mode-map "\e\C-h" 'mark-fortran-subprogram)
 296   (define-key fortran-mode-map "\e\n" 'fortran-split-line)
 297   (define-key fortran-mode-map "\n" 'fortran-indent-new-line)
 298   (define-key fortran-mode-map "\e\C-q" 'fortran-indent-subprogram)
 299   (define-key fortran-mode-map "\C-c\C-w" 'fortran-window-create-momentarily)
 300   (define-key fortran-mode-map "\C-c\C-r" 'fortran-column-ruler)
 301   (define-key fortran-mode-map "\C-c\C-p" 'fortran-previous-statement)
 302   (define-key fortran-mode-map "\C-c\C-n" 'fortran-next-statement)
 303   (define-key fortran-mode-map "\t" 'fortran-indent-line)
 304   (define-key fortran-mode-map "0" 'fortran-electric-line-number)
 305   (define-key fortran-mode-map "1" 'fortran-electric-line-number)
 306   (define-key fortran-mode-map "2" 'fortran-electric-line-number)
 307   (define-key fortran-mode-map "3" 'fortran-electric-line-number)
 308   (define-key fortran-mode-map "4" 'fortran-electric-line-number)
 309   (define-key fortran-mode-map "5" 'fortran-electric-line-number)
 310   (define-key fortran-mode-map "6" 'fortran-electric-line-number)
 311   (define-key fortran-mode-map "7" 'fortran-electric-line-number)
 312   (define-key fortran-mode-map "8" 'fortran-electric-line-number)
 313   (define-key fortran-mode-map "9" 'fortran-electric-line-number))
 314 \f
 315 (defvar fortran-mode-abbrev-table nil)
 316 (if fortran-mode-abbrev-table
 317     ()
 318   (let ((ac abbrevs-changed))
 319     (define-abbrev-table 'fortran-mode-abbrev-table ())
 320     (define-abbrev fortran-mode-abbrev-table  ";au"  "automatic" nil)
 321     (define-abbrev fortran-mode-abbrev-table  ";b"   "byte" nil)
 322     (define-abbrev fortran-mode-abbrev-table  ";bd"  "block data" nil)
 323     (define-abbrev fortran-mode-abbrev-table  ";ch"  "character" nil)
 324     (define-abbrev fortran-mode-abbrev-table  ";cl"  "close" nil)
 325     (define-abbrev fortran-mode-abbrev-table  ";c"   "continue" nil)
 326     (define-abbrev fortran-mode-abbrev-table  ";cm"  "common" nil)
 327     (define-abbrev fortran-mode-abbrev-table  ";cx"  "complex" nil)
 328     (define-abbrev fortran-mode-abbrev-table  ";df"  "define" nil)
 329     (define-abbrev fortran-mode-abbrev-table  ";di"  "dimension" nil)
 330     (define-abbrev fortran-mode-abbrev-table  ";do"  "double" nil)
 331     (define-abbrev fortran-mode-abbrev-table  ";dc"  "double complex" nil)
 332     (define-abbrev fortran-mode-abbrev-table  ";dp"  "double precision" nil)
 333     (define-abbrev fortran-mode-abbrev-table  ";dw"  "do while" nil)
 334     (define-abbrev fortran-mode-abbrev-table  ";e"   "else" nil)
 335     (define-abbrev fortran-mode-abbrev-table  ";ed"  "enddo" nil)
 336     (define-abbrev fortran-mode-abbrev-table  ";el"  "elseif" nil)
 337     (define-abbrev fortran-mode-abbrev-table  ";en"  "endif" nil)
 338     (define-abbrev fortran-mode-abbrev-table  ";eq"  "equivalence" nil)
 339     (define-abbrev fortran-mode-abbrev-table  ";ew"  "endwhere" nil)
 340     (define-abbrev fortran-mode-abbrev-table  ";ex"  "external" nil)
 341     (define-abbrev fortran-mode-abbrev-table  ";ey"  "entry" nil)
 342     (define-abbrev fortran-mode-abbrev-table  ";f"   "format" nil)
 343     (define-abbrev fortran-mode-abbrev-table  ";fa"  ".false." nil)
 344     (define-abbrev fortran-mode-abbrev-table  ";fu"  "function" nil)
 345     (define-abbrev fortran-mode-abbrev-table  ";g"   "goto" nil)
 346     (define-abbrev fortran-mode-abbrev-table  ";im"  "implicit" nil)
 347     (define-abbrev fortran-mode-abbrev-table  ";ib"  "implicit byte" nil)
 348     (define-abbrev fortran-mode-abbrev-table  ";ic"  "implicit complex" nil)
 349     (define-abbrev fortran-mode-abbrev-table  ";ich" "implicit character" nil)
 350     (define-abbrev fortran-mode-abbrev-table  ";ii"  "implicit integer" nil)
 351     (define-abbrev fortran-mode-abbrev-table  ";il"  "implicit logical" nil)
 352     (define-abbrev fortran-mode-abbrev-table  ";ir"  "implicit real" nil)
 353     (define-abbrev fortran-mode-abbrev-table  ";inc" "include" nil)
 354     (define-abbrev fortran-mode-abbrev-table  ";in"  "integer" nil)
 355     (define-abbrev fortran-mode-abbrev-table  ";intr" "intrinsic" nil)
 356     (define-abbrev fortran-mode-abbrev-table  ";l"   "logical" nil)
 357     (define-abbrev fortran-mode-abbrev-table  ";n"   "namelist" nil)
 358     (define-abbrev fortran-mode-abbrev-table  ";o"   "open" nil) ; was ;op
 359     (define-abbrev fortran-mode-abbrev-table  ";pa"  "parameter" nil)
 360     (define-abbrev fortran-mode-abbrev-table  ";pr"  "program" nil)
 361     (define-abbrev fortran-mode-abbrev-table  ";ps"  "pause" nil)
 362     (define-abbrev fortran-mode-abbrev-table  ";p"   "print" nil)
 363     (define-abbrev fortran-mode-abbrev-table  ";rc"  "record" nil)
 364     (define-abbrev fortran-mode-abbrev-table  ";re"  "real" nil)
 365     (define-abbrev fortran-mode-abbrev-table  ";r"   "read" nil)
 366     (define-abbrev fortran-mode-abbrev-table  ";rt"  "return" nil)
 367     (define-abbrev fortran-mode-abbrev-table  ";rw"  "rewind" nil)
 368     (define-abbrev fortran-mode-abbrev-table  ";s"   "stop" nil)
 369     (define-abbrev fortran-mode-abbrev-table  ";sa"  "save" nil)
 370     (define-abbrev fortran-mode-abbrev-table  ";st"  "structure" nil)
 371     (define-abbrev fortran-mode-abbrev-table  ";sc"  "static" nil)
 372     (define-abbrev fortran-mode-abbrev-table  ";su"  "subroutine" nil)
 373     (define-abbrev fortran-mode-abbrev-table  ";tr"  ".true." nil)
 374     (define-abbrev fortran-mode-abbrev-table  ";ty"  "type" nil)
 375     (define-abbrev fortran-mode-abbrev-table  ";vo"  "volatile" nil)
 376     (define-abbrev fortran-mode-abbrev-table  ";w"   "write" nil)
 377     (define-abbrev fortran-mode-abbrev-table  ";wh"  "where" nil)
 378     (setq abbrevs-changed ac)))
 379 \f
 380 ;;;###autoload
 381 (defun fortran-mode ()
 382   "Major mode for editing Fortran code.
 383 \\[fortran-indent-line] indents the current Fortran line correctly.
 384 DO statements must not share a common CONTINUE.
 385
 386 Type ;? or ;\\[help-command] to display a list of built-in\
 387  abbrevs for Fortran keywords.
 388
 389 Key definitions:
 390 \\{fortran-mode-map}
 391
 392 Variables controlling indentation style and extra features:
 393
 394  comment-start
 395     Normally nil in Fortran mode.  If you want to use comments
 396     starting with `!', set this to the string \"!\".
 397  fortran-do-indent
 398     Extra indentation within do blocks.  (default 3)
 399  fortran-if-indent
 400     Extra indentation within if blocks.  (default 3)
 401  fortran-structure-indent
 402     Extra indentation within structure, union, map and interface blocks.
 403     (default 3)
 404  fortran-continuation-indent
 405     Extra indentation applied to continuation statements.  (default 5)
 406  fortran-comment-line-extra-indent
 407     Amount of extra indentation for text within full-line comments. (default 0)
 408  fortran-comment-indent-style
 409     nil    means don't change indentation of text in full-line comments,
 410     fixed  means indent that text at `fortran-comment-line-extra-indent' beyond
 411            the value of `fortran-minimum-statement-indent-fixed' (for fixed
 412            format continuation style) or `fortran-minimum-statement-indent-tab'
 413            (for TAB format continuation style).
 414     relative  means indent at `fortran-comment-line-extra-indent' beyond the
 415               indentation for a line of code.
 416     (default 'fixed)
 417  fortran-comment-indent-char
 418     Single-character string to be inserted instead of space for
 419     full-line comment indentation.  (default \" \")
 420  fortran-minimum-statement-indent-fixed
 421     Minimum indentation for Fortran statements in fixed format mode. (def.6)
 422  fortran-minimum-statement-indent-tab
 423     Minimum indentation for Fortran statements in TAB format mode. (default 9)
 424  fortran-line-number-indent
 425     Maximum indentation for line numbers.  A line number will get
 426     less than this much indentation if necessary to avoid reaching
 427     column 5.  (default 1)
 428  fortran-check-all-num-for-matching-do
 429     Non-nil causes all numbered lines to be treated as possible \"continue\"
 430     statements.  (default nil)
 431  fortran-blink-matching-if
 432     Non-nil causes \\[fortran-indent-line] on an ENDIF statement to blink on
 433     matching IF.  Also, from an ENDDO statement, blink on matching DO [WHILE]
 434     statement.  (default nil)
 435  fortran-continuation-string
 436     Single-character string to be inserted in column 5 of a continuation
 437     line.  (default \"$\")
 438  fortran-comment-region
 439     String inserted by \\[fortran-comment-region] at start of each line in
 440     region.  (default \"c$$$\")
 441  fortran-electric-line-number
 442     Non-nil causes line number digits to be moved to the correct column
 443     as typed.  (default t)
 444  fortran-break-before-delimiters
 445     Non-nil causes `fortran-do-auto-fill' breaks lines before delimiters.
 446     (default t)
 447  fortran-startup-message
 448     Set to nil to inhibit message first time Fortran mode is used.
 449
 450 Turning on Fortran mode calls the value of the variable `fortran-mode-hook'
 451 with no args, if that value is non-nil."
 452   (interactive)
 453   (kill-all-local-variables)
 454   (if fortran-startup-message
 455       (message "Emacs Fortran mode %s.  Bugs to %s"
 456                fortran-mode-version bug-fortran-mode))
 457   (setq fortran-startup-message nil)
 458   (setq local-abbrev-table fortran-mode-abbrev-table)
 459   (set-syntax-table fortran-mode-syntax-table)
 460   ;; Font Lock mode support.
 461   (set (make-local-variable 'font-lock-defaults)
 462        '((fortran-font-lock-keywords fortran-font-lock-keywords-1
 463           fortran-font-lock-keywords-2 fortran-font-lock-keywords-3) t t))
 464   (make-local-variable 'fortran-break-before-delimiters)
 465   (setq fortran-break-before-delimiters t)
 466   (make-local-variable 'indent-line-function)
 467   (setq indent-line-function 'fortran-indent-line)
 468   (make-local-variable 'comment-indent-function)
 469   (setq comment-indent-function 'fortran-comment-hook)
 470   (make-local-variable 'comment-line-start-skip)
 471   (setq comment-line-start-skip
 472         "^[Cc*]\\(\\([^ \t\n]\\)\\2\\2*\\)?[ \t]*\\|^#.*")
 473   (make-local-variable 'comment-line-start)
 474   (setq comment-line-start "c")
 475   (make-local-variable 'comment-start-skip)
 476   (setq comment-start-skip "![ \t]*")
 477   (make-local-variable 'comment-start)
 478   (setq comment-start nil)
 479   (make-local-variable 'require-final-newline)
 480   (setq require-final-newline t)
 481   (make-local-variable 'abbrev-all-caps)
 482   (setq abbrev-all-caps t)
 483   (make-local-variable 'indent-tabs-mode)
 484   (setq indent-tabs-mode nil)
 485 ;;;(setq abbrev-mode t) ; ?? (abbrev-mode 1) instead??
 486   (setq fill-column 72) ; Already local?
 487   (use-local-map fortran-mode-map)
 488   (setq mode-name "Fortran")
 489   (setq major-mode 'fortran-mode)
 490 ;;;(make-local-variable 'fortran-tab-mode)
 491   (make-local-variable 'fortran-comment-line-extra-indent)
 492   (make-local-variable 'fortran-minimum-statement-indent-fixed)
 493   (make-local-variable 'fortran-minimum-statement-indent-tab)
 494   (make-local-variable 'fortran-column-ruler-fixed)
 495   (make-local-variable 'fortran-column-ruler-tab)
 496   (make-local-variable 'fortran-tab-mode-string)
 497   (setq fortran-tab-mode-string " TAB-format")
 498   (setq indent-tabs-mode (fortran-analyze-file-format))
 499   (run-hooks 'fortran-mode-hook))
 500 \f
 501 (defun fortran-comment-hook ()
 502   (save-excursion
 503     (skip-chars-backward " \t")
 504     (max (+ 1 (current-column))
 505          comment-column)))
 506
 507 (defun fortran-indent-comment ()
 508   "Align or create comment on current line.
 509 Existing comments of all types are recognized and aligned.
 510 If the line has no comment, a side-by-side comment is inserted and aligned
 511 if the value of  comment-start  is not nil.
 512 Otherwise, a separate-line comment is inserted, on this line
 513 or on a new line inserted before this line if this line is not blank."
 514   (interactive)
 515   (beginning-of-line)
 516   ;; Recognize existing comments of either kind.
 517   (cond ((looking-at comment-line-start-skip)
 518          (fortran-indent-line))
 519         ((fortran-find-comment-start-skip) ; catches any inline comment and
 520                                         ; leaves point after comment-start-skip
 521          (if comment-start-skip
 522              (progn (goto-char (match-beginning 0))
 523                     (if (not (= (current-column) (fortran-comment-hook)))
 524                         (progn (delete-horizontal-space)
 525                                (indent-to (fortran-comment-hook)))))
 526            (end-of-line)))        ; otherwise goto end of line or sth else?
 527         ;; No existing comment.
 528         ;; If side-by-side comments are defined, insert one,
 529         ;; unless line is now blank.
 530         ((and comment-start (not (looking-at "^[ \t]*$")))
 531          (end-of-line)
 532          (delete-horizontal-space)
 533          (indent-to (fortran-comment-hook))
 534          (insert comment-start))
 535         ;; Else insert separate-line comment, making a new line if nec.
 536         (t
 537          (if (looking-at "^[ \t]*$")
 538              (delete-horizontal-space)
 539            (beginning-of-line)
 540            (insert "\n")
 541            (forward-char -1))
 542          (insert comment-line-start)
 543          (insert-char (if (stringp fortran-comment-indent-char)
 544                           (aref fortran-comment-indent-char 0)
 545                         fortran-comment-indent-char)
 546                       (- (calculate-fortran-indent) (current-column))))))
 547
 548 (defun fortran-comment-region (beg-region end-region arg)
 549   "Comments every line in the region.
 550 Puts fortran-comment-region at the beginning of every line in the region.
 551 BEG-REGION and END-REGION are args which specify the region boundaries.
 552 With non-nil ARG, uncomments the region."
 553   (interactive "*r\nP")
 554   (let ((end-region-mark (make-marker)) (save-point (point-marker)))
 555     (set-marker end-region-mark end-region)
 556     (goto-char beg-region)
 557     (beginning-of-line)
 558     (if (not arg)                       ;comment the region
 559         (progn (insert fortran-comment-region)
 560                (while (and  (= (forward-line 1) 0)
 561                             (< (point) end-region-mark))
 562                  (insert fortran-comment-region)))
 563       (let ((com (regexp-quote fortran-comment-region))) ;uncomment the region
 564         (if (looking-at com)
 565             (delete-region (point) (match-end 0)))
 566         (while (and  (= (forward-line 1) 0)
 567                      (< (point) end-region-mark))
 568           (if (looking-at com)
 569               (delete-region (point) (match-end 0))))))
 570     (goto-char save-point)
 571     (set-marker end-region-mark nil)
 572     (set-marker save-point nil)))
 573 \f
 574 (defun fortran-abbrev-start ()
 575   "Typing ;\\[help-command] or ;? lists all the Fortran abbrevs.
 576 Any other key combination is executed normally."
 577   (interactive)
 578   (let (c)
 579     (insert last-command-char)
 580     (if (or (eq (setq c (read-event)) ??)    ;insert char if not equal to `?'
 581             (eq c help-char))
 582         (fortran-abbrev-help)
 583       (setq unread-command-events (list c)))))
 584
 585 (defun fortran-abbrev-help ()
 586   "List the currently defined abbrevs in Fortran mode."
 587   (interactive)
 588   (message "Listing abbrev table...")
 589   (display-buffer (fortran-prepare-abbrev-list-buffer))
 590   (message "Listing abbrev table...done"))
 591
 592 (defun fortran-prepare-abbrev-list-buffer ()
 593   (save-excursion
 594     (set-buffer (get-buffer-create "*Abbrevs*"))
 595     (erase-buffer)
 596     (insert-abbrev-table-description 'fortran-mode-abbrev-table t)
 597     (goto-char (point-min))
 598     (set-buffer-modified-p nil)
 599     (edit-abbrevs-mode))
 600   (get-buffer-create "*Abbrevs*"))
 601
 602 (defun fortran-column-ruler ()
 603   "Inserts a column ruler momentarily above current line, till next keystroke.
 604 The ruler is defined by the value of `fortran-column-ruler-fixed' when in fixed
 605 format mode, and `fortran-column-ruler-tab' when in TAB format mode.
 606 The key typed is executed unless it is SPC."
 607   (interactive)
 608   (momentary-string-display
 609    (if indent-tabs-mode
 610        fortran-column-ruler-tab
 611      fortran-column-ruler-fixed)
 612    (save-excursion
 613      (beginning-of-line)
 614      (if (eq (window-start (selected-window))
 615              (window-point (selected-window)))
 616          (progn (forward-line) (point))
 617        (point)))
 618    nil "Type SPC or any command to erase ruler."))
 619
 620 (defun fortran-window-create ()
 621   "Makes the window 72 columns wide.
 622 See also `fortran-window-create-momentarily'."
 623   (interactive)
 624   (condition-case error
 625       (progn
 626         (let ((window-min-width 2))
 627           (if (< (window-width) (frame-width))
 628               (enlarge-window-horizontally (- (frame-width)
 629                                               (window-width) 1)))
 630           (split-window-horizontally 73)
 631           (other-window 1)
 632           (switch-to-buffer " fortran-window-extra" t)
 633           (select-window (previous-window))))
 634     (error (message "No room for Fortran window.")
 635            'error)))
 636
 637 (defun fortran-window-create-momentarily (&optional arg)
 638   "Momentarily makes the window 72 columns wide.
 639 Optional ARG non-nil and non-unity disables the momentary feature.
 640 See also `fortran-window-create'."
 641   (interactive "p")
 642   (if (or (not arg)
 643           (= arg 1))
 644       (save-window-excursion
 645         (if (not (equal (fortran-window-create) 'error))
 646             (progn (message "Type SPC to continue editing.")
 647                    (let ((char (read-event)))
 648                      (or (equal char (string-to-char " "))
 649                          (setq unread-command-events (list char)))))))
 650     (fortran-window-create)))
 651
 652 (defun fortran-split-line ()
 653   "Break line at point and insert continuation marker and alignment."
 654   (interactive)
 655   (delete-horizontal-space)
 656   (if (save-excursion (beginning-of-line) (looking-at comment-line-start-skip))
 657       (insert "\n" comment-line-start " ")
 658     (if indent-tabs-mode
 659         (progn
 660           (insert "\n\t")
 661           (insert-char (fortran-numerical-continuation-char) 1))
 662       (insert "\n " fortran-continuation-string)));Space after \n important
 663   (fortran-indent-line))                ;when the cont string is C, c or *.
 664
 665 (defun fortran-numerical-continuation-char ()
 666   "Return a digit for tab-digit style of continuation lines.
 667 If, previous line is a tab-digit continuation line, returns that digit
 668 plus one.  Otherwise return 1.  Zero not allowed."
 669   (save-excursion
 670     (forward-line -1)
 671     (if (looking-at "\t[1-9]")
 672         (+ ?1 (% (- (char-after (+ (point) 1)) ?0) 9))
 673       ?1)))
 674
 675 (defun delete-horizontal-regexp (chars)
 676   "Delete all characters in CHARS around point.
 677 CHARS is like the inside of a [...] in a regular expression
 678 except that ] is never special and \ quotes ^, - or \."
 679   (interactive "*s")
 680   (skip-chars-backward chars)
 681   (delete-region (point) (progn (skip-chars-forward chars) (point))))
 682
 683 (defun fortran-electric-line-number (arg)
 684   "Self insert, but if part of a Fortran line number indent it automatically.
 685 Auto-indent does not happen if a numeric arg is used."
 686   (interactive "P")
 687   (if (or arg (not fortran-electric-line-number))
 688       (if arg
 689           (self-insert-command (prefix-numeric-value arg))
 690         (self-insert-command 1))
 691     (if (or (and (= 5 (current-column))
 692                  (save-excursion
 693                    (beginning-of-line)
 694                    (looking-at "     ")));In col 5 with only spaces to left.
 695             (and (= (if indent-tabs-mode
 696                   fortran-minimum-statement-indent-tab
 697                 fortran-minimum-statement-indent-fixed) (current-column))
 698                  (save-excursion
 699                    (beginning-of-line)
 700                    (looking-at "\t"));In col 8 with a single tab to the left.
 701                  (not (or (eq last-command 'fortran-indent-line)
 702                           (eq last-command
 703                               'fortran-indent-new-line))))
 704             (save-excursion
 705               (re-search-backward "[^ \t0-9]"
 706                                   (save-excursion
 707                                     (beginning-of-line)
 708                                     (point))
 709                                   t)) ;not a line number
 710             (looking-at "[0-9]")        ;within a line number
 711             )
 712         (self-insert-command (prefix-numeric-value arg))
 713       (skip-chars-backward " \t")
 714       (insert last-command-char)
 715       (fortran-indent-line))))
 716 \f
 717 (defun beginning-of-fortran-subprogram ()
 718   "Moves point to the beginning of the current Fortran subprogram."
 719   (interactive)
 720   (let ((case-fold-search t))
 721     (beginning-of-line -1)
 722     (re-search-backward "^[ \t0-9]*end\\b[ \t]*[^ \t=(a-z]" nil 'move)
 723     (if (looking-at "^[ \t0-9]*end\\b[ \t]*[^ \t=(a-z]")
 724         (forward-line 1))))
 725
 726 (defun end-of-fortran-subprogram ()
 727   "Moves point to the end of the current Fortran subprogram."
 728   (interactive)
 729   (let ((case-fold-search t))
 730     (beginning-of-line 2)
 731     (re-search-forward "^[ \t0-9]*end\\b[ \t]*[^ \t=(a-z]" nil 'move)
 732     (goto-char (match-beginning 0))
 733     (forward-line 1)))
 734
 735 (defun mark-fortran-subprogram ()
 736   "Put mark at end of Fortran subprogram, point at beginning.
 737 The marks are pushed."
 738   (interactive)
 739   (end-of-fortran-subprogram)
 740   (push-mark (point))
 741   (beginning-of-fortran-subprogram))
 742
 743 (defun fortran-previous-statement ()
 744   "Moves point to beginning of the previous Fortran statement.
 745 Returns `first-statement' if that statement is the first
 746 non-comment Fortran statement in the file, and nil otherwise."
 747   (interactive)
 748   (let (not-first-statement continue-test)
 749     (beginning-of-line)
 750     (setq continue-test
 751           (and
 752            (not (looking-at comment-line-start-skip))
 753            (or (looking-at
 754                 (concat "[ \t]*" (regexp-quote fortran-continuation-string)))
 755                (or (looking-at "     [^ 0\n]")
 756                    (looking-at "\t[1-9]")))))
 757     (while (and (setq not-first-statement (= (forward-line -1) 0))
 758                 (or (looking-at comment-line-start-skip)
 759                     (looking-at "[ \t]*$")
 760                     (looking-at "     [^ 0\n]")
 761                     (looking-at "\t[1-9]")
 762                     (looking-at (concat "[ \t]*"  comment-start-skip)))))
 763     (cond ((and continue-test
 764                 (not not-first-statement))
 765            (message "Incomplete continuation statement."))
 766           (continue-test
 767            (fortran-previous-statement))
 768           ((not not-first-statement)
 769            'first-statement))))
 770
 771 (defun fortran-next-statement ()
 772   "Moves point to beginning of the next Fortran statement.
 773 Returns `last-statement' if that statement is the last
 774 non-comment Fortran statement in the file, and nil otherwise."
 775   (interactive)
 776   (let (not-last-statement)
 777     (beginning-of-line)
 778     (while (and (setq not-last-statement
 779                       (and (= (forward-line 1) 0)
 780                            (not (eobp))))
 781                 (or (looking-at comment-line-start-skip)
 782                     (looking-at "[ \t]*$")
 783                     (looking-at "     [^ 0\n]")
 784                     (looking-at "\t[1-9]")
 785                     (looking-at (concat "[ \t]*"  comment-start-skip)))))
 786     (if (not not-last-statement)
 787         'last-statement)))
 788 \f
 789 (defun fortran-blink-matching-if ()
 790   ;; From a Fortran ENDIF statement, blink the matching IF statement.
 791   (let ((top-of-window (window-start)) matching-if
 792         (endif-point (point)) message)
 793     (if (save-excursion (beginning-of-line)
 794                         (skip-chars-forward " \t0-9")
 795                         (looking-at "end[ \t]*if\\b"))
 796         (progn
 797           (if (not (setq matching-if (fortran-beginning-if)))
 798               (setq message "No matching if.")
 799             (if (< matching-if top-of-window)
 800                 (save-excursion
 801                   (goto-char matching-if)
 802                   (beginning-of-line)
 803                   (setq message
 804                         (concat "Matches "
 805                                 (buffer-substring
 806                                  (point) (progn (end-of-line) (point))))))))
 807           (if message
 808               (message "%s" message)
 809             (goto-char matching-if)
 810             (sit-for 1)
 811             (goto-char endif-point))))))
 812
 813 (defun fortran-blink-matching-do ()
 814   ;; From a Fortran ENDDO statement, blink on the matching DO or DO WHILE
 815   ;; statement.  This is basically copied from fortran-blink-matching-if.
 816   (let ((top-of-window (window-start)) matching-do
 817         (enddo-point (point)) message)
 818     (if (save-excursion (beginning-of-line)
 819                         (skip-chars-forward " \t0-9")
 820                         (looking-at "end[ \t]*do\\b"))
 821         (progn
 822           (if (not (setq matching-do (fortran-beginning-do)))
 823               (setq message "No matching do.")
 824             (if (< matching-do top-of-window)
 825                 (save-excursion
 826                   (goto-char matching-do)
 827                   (beginning-of-line)
 828                   (setq message
 829                         (concat "Matches "
 830                                 (buffer-substring
 831                                  (point) (progn (end-of-line) (point))))))))
 832           (if message
 833               (message "%s" message)
 834             (goto-char matching-do)
 835             (sit-for 1)
 836             (goto-char enddo-point))))))
 837
 838 (defun fortran-mark-do ()
 839   "Put mark at end of Fortran DO [WHILE]-ENDDO construct, point at beginning.
 840 The marks are pushed."
 841   (interactive)
 842   (let (enddo-point do-point)
 843     (if (setq enddo-point (fortran-end-do))
 844         (if (not (setq do-point (fortran-beginning-do)))
 845             (message "No matching do.")
 846           ;; Set mark, move point.
 847           (goto-char enddo-point)
 848           (push-mark)
 849           (goto-char do-point)))))
 850
 851 (defun fortran-end-do ()
 852   ;; Search forward for first unmatched ENDDO.  Return point or nil.
 853   (if (save-excursion (beginning-of-line)
 854                       (skip-chars-forward " \t0-9")
 855                       (looking-at "end[ \t]*do\\b"))
 856       ;; Sitting on one.
 857       (match-beginning 0)
 858     ;; Search for one.
 859     (save-excursion
 860       (let ((count 1))
 861         (while (and (not (= count 0))
 862                     (not (eq (fortran-next-statement) 'last-statement))
 863                     ;; Keep local to subprogram
 864                     (not (looking-at "^[ \t0-9]*end\\b[ \t]*[^ \t=(a-z]")))
 865
 866           (skip-chars-forward " \t0-9")
 867           (cond ((looking-at "end[ \t]*do\\b")
 868                  (setq count (- count 1)))
 869                 ((looking-at "do[ \t]+[^0-9]")
 870                  (setq count (+ count 1)))))
 871         (and (= count 0)
 872              ;; All pairs accounted for.
 873              (point))))))
 874
 875 (defun fortran-beginning-do ()
 876   ;; Search backwards for first unmatched DO [WHILE].  Return point or nil.
 877   (if (save-excursion (beginning-of-line)
 878                       (skip-chars-forward " \t0-9")
 879                       (looking-at "do[ \t]+"))
 880       ;; Sitting on one.
 881       (match-beginning 0)
 882     ;; Search for one.
 883     (save-excursion
 884       (let ((count 1))
 885         (while (and (not (= count 0))
 886                     (not (eq (fortran-previous-statement) 'first-statement))
 887                     ;; Keep local to subprogram
 888                     (not (looking-at "^[ \t0-9]*end\\b[ \t]*[^ \t=(a-z]")))
 889
 890           (skip-chars-forward " \t0-9")
 891           (cond ((looking-at "do[ \t]+[^0-9]")
 892                  (setq count (- count 1)))
 893                 ((looking-at "end[ \t]*do\\b")
 894                  (setq count (+ count 1)))))
 895
 896         (and (= count 0)
 897              ;; All pairs accounted for.
 898              (point))))))
 899
 900 (defun fortran-mark-if ()
 901   "Put mark at end of Fortran IF-ENDIF construct, point at beginning.
 902 The marks are pushed."
 903   (interactive)
 904   (let (endif-point if-point)
 905     (if (setq endif-point (fortran-end-if))
 906         (if (not (setq if-point (fortran-beginning-if)))
 907             (message "No matching if.")
 908           ;; Set mark, move point.
 909           (goto-char endif-point)
 910           (push-mark)
 911           (goto-char if-point)))))
 912
 913 (defun fortran-end-if ()
 914   ;; Search forwards for first unmatched ENDIF.  Return point or nil.
 915   (if (save-excursion (beginning-of-line)
 916                       (skip-chars-forward " \t0-9")
 917                       (looking-at "end[ \t]*if\\b"))
 918       ;; Sitting on one.
 919       (match-beginning 0)
 920     ;; Search for one.  The point has been already been moved to first
 921     ;; letter on line but this should not cause troubles.
 922     (save-excursion
 923       (let ((count 1))
 924         (while (and (not (= count 0))
 925                     (not (eq (fortran-next-statement) 'last-statement))
 926                     ;; Keep local to subprogram.
 927                     (not (looking-at
 928                           "^[ \t0-9]*end\\b[ \t]*[^ \t=(a-z]")))
 929
 930           (skip-chars-forward " \t0-9")
 931           (cond ((looking-at "end[ \t]*if\\b")
 932                  (setq count (- count 1)))
 933
 934                 ((looking-at "if[ \t]*(")
 935                  (save-excursion
 936                    (if (or
 937                         (looking-at ".*)[ \t]*then\\b[ \t]*[^ \t(=a-z0-9]")
 938                         (let (then-test) ; Multi-line if-then.
 939                           (while
 940                               (and (= (forward-line 1) 0)
 941                                    ;; Search forward for then.
 942                                    (or (looking-at "     [^ 0\n]")
 943                                        (looking-at "\t[1-9]"))
 944                                    (not
 945                                     (setq then-test
 946                                           (looking-at
 947                                            ".*then\\b[ \t]*[^ \t(=a-z0-9]")))))
 948                           then-test))
 949                        (setq count (+ count 1)))))))
 950
 951         (and (= count 0)
 952              ;; All pairs accounted for.
 953              (point))))))
 954
 955 (defun fortran-beginning-if ()
 956   ;; Search backwards for first unmatched IF-THEN.  Return point or nil.
 957   (if (save-excursion
 958         ;; May be sitting on multi-line if-then statement, first move to
 959         ;; beginning of current statement.  Note: `fortran-previous-statement'
 960         ;; moves to previous statement *unless* current statement is first
 961         ;; one.  Only move forward if not first-statement.
 962         (if (not (eq (fortran-previous-statement) 'first-statement))
 963             (fortran-next-statement))
 964         (skip-chars-forward " \t0-9")
 965         (and
 966          (looking-at "if[ \t]*(")
 967          (save-match-data
 968            (or (looking-at ".*)[ \t]*then\\b[ \t]*[^ \t(=a-z0-9]")
 969                ;; Multi-line if-then.
 970                (let (then-test)
 971                  (while
 972                      (and (= (forward-line 1) 0)
 973                           ;; Search forward for then.
 974                           (or (looking-at "     [^ 0\n]")
 975                               (looking-at "\t[1-9]"))
 976                           (not
 977                            (setq then-test
 978                                  (looking-at
 979                                   ".*then\\b[ \t]*[^ \t(=a-z0-9]")))))
 980                  then-test)))))
 981       ;; Sitting on one.
 982       (match-beginning 0)
 983     ;; Search for one.
 984     (save-excursion
 985       (let ((count 1))
 986         (while (and (not (= count 0))
 987                     (not (eq (fortran-previous-statement) 'first-statement))
 988                     ;; Keep local to subprogram.
 989                     (not (looking-at
 990                           "^[ \t0-9]*end\\b[ \t]*[^ \t=(a-z]")))
 991
 992           (skip-chars-forward " \t0-9")
 993           (cond ((looking-at "if[ \t]*(")
 994                  (save-excursion
 995                    (if (or
 996                         (looking-at ".*)[ \t]*then\\b[ \t]*[^ \t(=a-z0-9]")
 997                         (let (then-test) ; Multi-line if-then.
 998                           (while
 999                               (and (= (forward-line 1) 0)
1000                                    ;; Search forward for then.
1001                                    (or (looking-at "     [^ 0\n]")
1002                                        (looking-at "\t[1-9]"))
1003                                    (not
1004                                     (setq then-test
1005                                           (looking-at
1006                                            ".*then\\b[ \t]*[^ \t(=a-z0-9]")))))
1007                           then-test))
1008                        (setq count (- count 1)))))
1009                 ((looking-at "end[ \t]*if\\b")
1010                  (setq count (+ count 1)))))
1011
1012         (and (= count 0)
1013              ;; All pairs accounted for.
1014              (point))))))
1015 \f
1016 (defun fortran-indent-line ()
1017   "Indents current Fortran line based on its contents and on previous lines."
1018   (interactive)
1019   (let ((cfi (calculate-fortran-indent)))
1020     (save-excursion
1021       (beginning-of-line)
1022       (if (or (not (= cfi (fortran-current-line-indentation)))
1023               (and (re-search-forward "^[ \t]*[0-9]+" (+ (point) 4) t)
1024                    (not (fortran-line-number-indented-correctly-p))))
1025           (fortran-indent-to-column cfi)
1026         (beginning-of-line)
1027         (if (and (not (looking-at comment-line-start-skip))
1028                  (fortran-find-comment-start-skip))
1029             (fortran-indent-comment))))
1030     ;; Never leave point in left margin.
1031     (if (< (current-column) cfi)
1032         (move-to-column cfi))
1033     (if (and auto-fill-function
1034              (> (save-excursion (end-of-line) (current-column)) fill-column))
1035         (save-excursion
1036           (end-of-line)
1037           (fortran-do-auto-fill)))
1038     (if fortran-blink-matching-if
1039         (progn
1040           (fortran-blink-matching-if)
1041           (fortran-blink-matching-do)))))
1042
1043 (defun fortran-indent-new-line ()
1044   "Reindent the current Fortran line, insert a newline and indent the newline.
1045 An abbrev before point is expanded if `abbrev-mode' is non-nil."
1046   (interactive)
1047   (if abbrev-mode (expand-abbrev))
1048   (save-excursion
1049     (beginning-of-line)
1050     (skip-chars-forward " \t")
1051     (if (or (looking-at "[0-9]")        ;Reindent only where it is most
1052             (looking-at "end")          ;likely to be necessary
1053             (looking-at "else")
1054             (looking-at (regexp-quote fortran-continuation-string)))
1055         (fortran-indent-line)))
1056   (newline)
1057   (fortran-indent-line))
1058
1059 (defun fortran-indent-subprogram ()
1060   "Properly indents the Fortran subprogram which contains point."
1061   (interactive)
1062   (save-excursion
1063     (mark-fortran-subprogram)
1064     (message "Indenting subprogram...")
1065     (indent-region (point) (mark) nil))
1066   (message "Indenting subprogram...done."))
1067
1068 (defun calculate-fortran-indent ()
1069   "Calculates the Fortran indent column based on previous lines."
1070   (let (icol first-statement (case-fold-search t)
1071              (fortran-minimum-statement-indent
1072               (if indent-tabs-mode
1073                   fortran-minimum-statement-indent-tab
1074                 fortran-minimum-statement-indent-fixed)))
1075     (save-excursion
1076       (setq first-statement (fortran-previous-statement))
1077       (if first-statement
1078           (setq icol fortran-minimum-statement-indent)
1079         (progn
1080           (if (= (point) (point-min))
1081               (setq icol fortran-minimum-statement-indent)
1082             (setq icol (fortran-current-line-indentation)))
1083           (skip-chars-forward " \t0-9")
1084           (cond ((looking-at "if[ \t]*(")
1085                  (if (or (looking-at ".*)[ \t]*then\\b[ \t]*[^ \t_$(=a-z0-9]")
1086                          (let (then-test)       ;multi-line if-then
1087                            (while (and (= (forward-line 1) 0)
1088                                        ;;search forward for then
1089                                        (or (looking-at "     [^ 0\n]")
1090                                            (looking-at "\t[1-9]"))
1091                                        (not (setq then-test (looking-at
1092                                                              ".*then\\b[ \t]\
1093 *[^ \t_$(=a-z0-9]")))))
1094                            then-test))
1095                      (setq icol (+ icol fortran-if-indent))))
1096                 ((looking-at "\\(else\\|elseif\\)\\b")
1097                  (setq icol (+ icol fortran-if-indent)))
1098                 ((looking-at "select[ \t]*case[ \t](.*)\\b")
1099                  (setq icol (+ icol fortran-if-indent)))
1100                 ((looking-at "case[ \t]*(.*)[ \t]*\n")
1101                  (setq icol (+ icol fortran-if-indent)))
1102                 ((looking-at "case[ \t]*default\\b")
1103                  (setq icol (+ icol fortran-if-indent)))
1104                 ((looking-at "\\(otherwise\\|else[ \t]*where\\)\\b")
1105                  (setq icol (+ icol fortran-if-indent)))
1106                 ((looking-at "where[ \t]*(.*)[ \t]*\n")
1107                  (setq icol (+ icol fortran-if-indent)))
1108                 ((looking-at "do\\b")
1109                  (setq icol (+ icol fortran-do-indent)))
1110                 ((looking-at
1111                   "\\(structure\\|union\\|map\\|interface\\)\\b[ \t]*[^ \t=(a-z]")
1112                  (setq icol (+ icol fortran-structure-indent)))
1113                 ((looking-at "end\\b[ \t]*[^ \t=(a-z]")
1114                  ;; Previous END resets indent to minimum
1115                  (setq icol fortran-minimum-statement-indent))))))
1116     (save-excursion
1117       (beginning-of-line)
1118       (cond ((looking-at "[ \t]*$"))
1119             ((looking-at comment-line-start-skip)
1120              (cond ((eq fortran-comment-indent-style 'relative)
1121                     (setq icol (+ icol fortran-comment-line-extra-indent)))
1122                    ((eq fortran-comment-indent-style 'fixed)
1123                     (setq icol (+ fortran-minimum-statement-indent
1124                                   fortran-comment-line-extra-indent))))
1125              (setq fortran-minimum-statement-indent 0))
1126             ((or (looking-at (concat "[ \t]*"
1127                                      (regexp-quote
1128                                       fortran-continuation-string)))
1129                  (looking-at "     [^ 0\n]")
1130                  (looking-at "\t[1-9]"))
1131              (setq icol (+ icol fortran-continuation-indent)))
1132             ((looking-at "[ \t]*#")     ; Check for cpp directive.
1133              (setq fortran-minimum-statement-indent 0 icol 0))
1134             (first-statement)
1135             ((and fortran-check-all-num-for-matching-do
1136                   (looking-at "[ \t]*[0-9]+")
1137                   (fortran-check-for-matching-do))
1138              (setq icol (- icol fortran-do-indent)))
1139             (t
1140              (skip-chars-forward " \t0-9")
1141              (cond ((looking-at "end[ \t]*if\\b")
1142                     (setq icol (- icol fortran-if-indent)))
1143                    ((looking-at "\\(else\\|elseif\\)\\b")
1144                     (setq icol (- icol fortran-if-indent)))
1145                    ((looking-at "case[ \t]*(.*)[ \t]*\n")
1146                     (setq icol (- icol fortran-if-indent)))
1147                    ((looking-at "case[ \t]*default\\b")
1148                     (setq icol (- icol fortran-if-indent)))
1149                    ((looking-at "\\(otherwise\\|else[ \t]*where\\)\\b")
1150                     (setq icol (- icol fortran-if-indent)))
1151                    ((looking-at "end[ \t]*where\\b")
1152                     (setq icol (- icol fortran-if-indent)))
1153                    ((and (looking-at "continue\\b")
1154                          (fortran-check-for-matching-do))
1155                     (setq icol (- icol fortran-do-indent)))
1156                    ((looking-at "end[ \t]*do\\b")
1157                     (setq icol (- icol fortran-do-indent)))
1158                    ((looking-at
1159                      "end[ \t]*\
1160 \\(structure\\|union\\|map\\|interface\\)\\b[ \t]*[^ \t=(a-z]")
1161                     (setq icol (- icol fortran-structure-indent)))
1162                    ((looking-at
1163                      "end[ \t]*select\\b[ \t]*[^ \t=(a-z]")
1164                     (setq icol (- icol fortran-if-indent)))
1165                    ((and (looking-at "end\\b[ \t]*[^ \t=(a-z]")
1166                          (not (= icol fortran-minimum-statement-indent)))
1167                     (message "Warning: `end' not in column %d.  Probably\
1168  an unclosed block." fortran-minimum-statement-indent))))))
1169     (max fortran-minimum-statement-indent icol)))
1170 \f
1171 (defun fortran-current-line-indentation ()
1172   "Indentation of current line, ignoring Fortran line number or continuation.
1173 This is the column position of the first non-whitespace character
1174 aside from the line number and/or column 5/8 line-continuation character.
1175 For comment lines, returns indentation of the first
1176 non-indentation text within the comment."
1177   (save-excursion
1178     (beginning-of-line)
1179     (cond ((looking-at comment-line-start-skip)
1180            (goto-char (match-end 0))
1181            (skip-chars-forward
1182             (if (stringp fortran-comment-indent-char)
1183                 fortran-comment-indent-char
1184               (char-to-string fortran-comment-indent-char))))
1185           ((or (looking-at "     [^ 0\n]")
1186                (looking-at "\t[1-9]"))
1187            (goto-char (match-end 0)))
1188           (t
1189            ;; Move past line number.
1190            (skip-chars-forward "[ \t0-9]");From Uli
1191            ))
1192     ;; Move past whitespace.
1193     (skip-chars-forward " \t")
1194     (current-column)))
1195
1196 (defun fortran-indent-to-column (col)
1197   "Indents current line with spaces to column COL.
1198 notes: 1) A non-zero/non-blank character in column 5 indicates a continuation
1199           line, and this continuation character is retained on indentation;
1200        2) If `fortran-continuation-string' is the first non-whitespace
1201           character, this is a continuation line;
1202        3) A non-continuation line which has a number as the first
1203           non-whitespace character is a numbered line.
1204        4) A TAB followed by a digit indicates a continuation line."
1205   (save-excursion
1206     (beginning-of-line)
1207     (if (looking-at comment-line-start-skip)
1208         (if fortran-comment-indent-style
1209             (let ((char (if (stringp fortran-comment-indent-char)
1210                             (aref fortran-comment-indent-char 0)
1211                           fortran-comment-indent-char)))
1212               (goto-char (match-end 0))
1213               (delete-horizontal-regexp (concat " \t" (char-to-string char)))
1214               (insert-char char (- col (current-column)))))
1215       (if (looking-at "\t[1-9]")
1216           (if indent-tabs-mode
1217               (goto-char (match-end 0))
1218             (delete-char 2)
1219             (insert "     ")
1220             (insert fortran-continuation-string))
1221         (if (looking-at "     [^ 0\n]")
1222             (if indent-tabs-mode
1223                 (progn (delete-char 6)
1224                        (insert "\t")
1225                        (insert-char (fortran-numerical-continuation-char) 1))
1226               (forward-char 6))
1227           (delete-horizontal-space)
1228           ;; Put line number in columns 0-4
1229           ;; or put continuation character in column 5.
1230           (cond ((eobp))
1231                 ((looking-at (regexp-quote fortran-continuation-string))
1232                  (if indent-tabs-mode
1233                      (progn
1234                        (indent-to
1235                         (if indent-tabs-mode
1236                             fortran-minimum-statement-indent-tab
1237                           fortran-minimum-statement-indent-fixed))
1238                        (delete-char 1)
1239                        (insert-char (fortran-numerical-continuation-char) 1))
1240                    (indent-to 5)
1241                    (forward-char 1)))
1242                 ((looking-at "[0-9]+")
1243                  (let ((extra-space (- 5 (- (match-end 0) (point)))))
1244                    (if (< extra-space 0)
1245                        (message "Warning: line number exceeds 5-digit limit.")
1246                      (indent-to (min fortran-line-number-indent extra-space))))
1247                  (skip-chars-forward "0-9")))))
1248       ;; Point is now after any continuation character or line number.
1249       ;; Put body of statement where specified.
1250       (delete-horizontal-space)
1251       (indent-to col)
1252       ;; Indent any comment following code on the same line.
1253       (if (and comment-start-skip
1254                (fortran-find-comment-start-skip))
1255           (progn (goto-char (match-beginning 0))
1256                  (if (not (= (current-column) (fortran-comment-hook)))
1257                      (progn (delete-horizontal-space)
1258                             (indent-to (fortran-comment-hook)))))))))
1259
1260 (defun fortran-line-number-indented-correctly-p ()
1261   "Return t if current line's line number is correctly indented.
1262 Do not call if there is no line number."
1263   (save-excursion
1264     (beginning-of-line)
1265     (skip-chars-forward " \t")
1266     (and (<= (current-column) fortran-line-number-indent)
1267          (or (= (current-column) fortran-line-number-indent)
1268              (progn (skip-chars-forward "0-9")
1269                     (= (current-column) 5))))))
1270
1271 (defun fortran-check-for-matching-do ()
1272   "When called from a numbered statement, returns t if matching DO is found.
1273 Otherwise return a nil."
1274   (let (charnum
1275         (case-fold-search t))
1276     (save-excursion
1277       (beginning-of-line)
1278       (if (looking-at "[ \t]*[0-9]+")
1279           (progn
1280             (skip-chars-forward " \t")
1281             (skip-chars-forward "0") ;skip past leading zeros
1282             (setq charnum (buffer-substring (point)
1283                                             (progn (skip-chars-forward "0-9")
1284                                                    (point))))
1285             (beginning-of-line)
1286             (and (re-search-backward
1287                   (concat "\\(^[ \t0-9]*end\\b[ \t]*[^ \t=(a-z]\\)\\|"
1288                           "\\(^[ \t0-9]*do[ \t]*0*" charnum "\\b\\)\\|"
1289                           "\\(^[ \t]*0*" charnum "\\b\\)")
1290                   nil t)
1291                  (looking-at (concat "^[ \t0-9]*do[ \t]*0*" charnum))))))))
1292
1293 (defun fortran-find-comment-start-skip ()
1294   "Move to past `comment-start-skip' found on current line.
1295 Return t if `comment-start-skip' found, nil if not."
1296 ;;; In order to move point only if comment-start-skip is found,
1297 ;;; this one uses a lot of save-excursions.  Note that re-search-forward
1298 ;;; moves point even if comment-start-skip is inside a string-constant.
1299 ;;; Some code expects certain values for match-beginning and end
1300   (interactive)
1301   (if (save-excursion
1302         (re-search-forward comment-start-skip
1303                            (save-excursion (end-of-line) (point)) t))
1304       (let ((save-match-beginning (match-beginning 0))
1305             (save-match-end (match-end 0)))
1306         (if (fortran-is-in-string-p (match-beginning 0))
1307             (save-excursion
1308               (goto-char save-match-end)
1309               (fortran-find-comment-start-skip)) ; recurse for rest of line
1310           (goto-char save-match-beginning)
1311           (re-search-forward comment-start-skip
1312                              (save-excursion (end-of-line) (point)) t)
1313           (goto-char (match-end 0))
1314           t))
1315     nil))
1316
1317 ;;;From: simon@gnu (Simon Marshall)
1318 ;;; Find the next ! not in a string.
1319 (defun fortran-match-!-comment (limit)
1320   (let (found)
1321     (while (and (setq found (search-forward "!" limit t))
1322                 (fortran-is-in-string-p (point))))
1323     (if (not found)
1324         nil
1325       ;; Cheaper than `looking-at' "!.*".
1326       (store-match-data
1327        (list (1- (point)) (progn (end-of-line) (min (point) limit))))
1328       t)))
1329
1330 ;; The above function is about 10% faster than the below...
1331 ;;(defun fortran-match-!-comment (limit)
1332 ;;  (let (found)
1333 ;;    (while (and (setq found (re-search-forward "!.*" limit t))
1334 ;;                (fortran-is-in-string-p (match-beginning 0))))
1335 ;;    found))
1336
1337 ;;;From: ralf@up3aud1.gwdg.de (Ralf Fassel)
1338 ;;; Test if TAB format continuation lines work.
1339 (defun fortran-is-in-string-p (where)
1340   "Return non-nil if POS (a buffer position) is inside a Fortran string,
1341 nil else."
1342   (save-excursion
1343     (goto-char where)
1344     (cond
1345      ((bolp) nil)                       ; bol is never inside a string
1346      ((save-excursion                   ; comment lines too
1347         (beginning-of-line)(looking-at comment-line-start-skip)) nil)
1348      (t (let (;; ok, serious now. Init some local vars:
1349               (parse-state '(0 nil nil nil nil nil 0))
1350               (quoted-comment-start (if comment-start
1351                                         (regexp-quote comment-start)))
1352               (not-done t)
1353               parse-limit
1354               end-of-line
1355               )
1356           ;; move to start of current statement
1357           (fortran-next-statement)
1358           (fortran-previous-statement)
1359           ;; now parse up to WHERE
1360           (while not-done
1361             (if (or ;; skip to next line if:
1362                  ;; - comment line?
1363                  (looking-at comment-line-start-skip)
1364                  ;; - at end of line?
1365                  (eolp)
1366                  ;; - not in a string and after comment-start?
1367                  (and (not (nth 3 parse-state))
1368                       comment-start
1369                       (equal comment-start
1370                              (char-to-string (preceding-char)))))
1371                 ;; get around a bug in forward-line in versions <= 18.57
1372                 (if (or (> (forward-line 1) 0) (eobp))
1373                     (setq not-done nil))
1374               ;; else:
1375               ;; if we are at beginning of code line, skip any
1376               ;; whitespace, labels and tab continuation markers.
1377               (if (bolp) (skip-chars-forward " \t0-9"))
1378               ;; if we are in column <= 5 now, check for continuation char
1379               (cond ((= 5 (current-column)) (forward-char 1))
1380                     ((and (< (current-column) 5)
1381                           (equal fortran-continuation-string
1382                                  (char-to-string (following-char)))
1383                           (forward-char 1))))
1384               ;; find out parse-limit from here
1385               (setq end-of-line (save-excursion (end-of-line)(point)))
1386               (setq parse-limit (min where end-of-line))
1387               ;; parse max up to comment-start, if non-nil and in current line
1388               (if comment-start
1389                   (save-excursion
1390                     (if (re-search-forward quoted-comment-start end-of-line t)
1391                         (setq parse-limit (min (point) parse-limit)))))
1392               ;; now parse if still in limits
1393               (if (< (point) where)
1394                   (setq parse-state (parse-partial-sexp
1395                                      (point) parse-limit nil nil parse-state))
1396                 (setq not-done nil))
1397               ))
1398           ;; result is
1399           (nth 3 parse-state))))))
1400
1401 (defun fortran-auto-fill-mode (arg)
1402   "Toggle fortran-auto-fill mode.
1403 With ARG, turn `fortran-auto-fill' mode on iff ARG is positive.
1404 In `fortran-auto-fill' mode, inserting a space at a column beyond `fill-column'
1405 automatically breaks the line at a previous space."
1406   (interactive "P")
1407   (prog1 (setq auto-fill-function
1408                (if (if (null arg)
1409                        (not auto-fill-function)
1410                      (> (prefix-numeric-value arg) 0))
1411                    'fortran-indent-line
1412                  nil))
1413     (force-mode-line-update)))
1414
1415 (defun fortran-do-auto-fill ()
1416   (interactive)
1417   (let* ((opoint (point))
1418          (bol (save-excursion (beginning-of-line) (point)))
1419          (eol (save-excursion (end-of-line) (point)))
1420          (bos (min eol (+ bol (fortran-current-line-indentation))))
1421          (quote
1422           (save-excursion
1423             (goto-char bol)
1424             (if (looking-at comment-line-start-skip)
1425                 nil                     ; OK to break quotes on comment lines.
1426               (move-to-column fill-column)
1427               (cond ((fortran-is-in-string-p (point))
1428                      (save-excursion (re-search-backward "[^']'[^']" bol t)
1429                                      (if fortran-break-before-delimiters
1430                                          (point)
1431                                        (1+ (point)))))
1432                     (t nil)))))
1433          ;;
1434          ;; decide where to split the line. If a position for a quoted
1435          ;; string was found above then use that, else break the line
1436          ;; before the last delimiter.
1437          ;; Delimiters are whitespace, commas, and operators.
1438          ;; Will break before a pair of *'s.
1439          ;;
1440          (fill-point
1441           (or quote
1442               (save-excursion
1443                 (move-to-column (1+ fill-column))
1444                 (skip-chars-backward "^ \t\n,'+-/*=)"
1445 ;;;              (if fortran-break-before-delimiters
1446 ;;;                  "^ \t\n,'+-/*=" "^ \t\n,'+-/*=)")
1447                  )
1448                 (if (<= (point) (1+ bos))
1449                     (progn
1450                       (move-to-column (1+ fill-column))
1451 ;;;what is this doing???
1452                       (if (not (re-search-forward "[\t\n,'+-/*)=]" eol t))
1453                           (goto-char bol))))
1454                 (if (bolp)
1455                     (re-search-forward "[ \t]" opoint t)
1456                   (forward-char -1)
1457                   (if (looking-at "'")
1458                       (forward-char 1)
1459                     (skip-chars-backward " \t\*")))
1460                 (if fortran-break-before-delimiters
1461                     (point)
1462                   (1+ (point))))))
1463          )
1464     ;; if we are in an in-line comment, don't break unless the
1465     ;; line of code is longer than it should be. Otherwise
1466     ;; break the line at the column computed above.
1467     ;;
1468     ;; Need to use fortran-find-comment-start-skip to make sure that quoted !'s
1469     ;; don't prevent a break.
1470     (if (not (or (save-excursion
1471                    (if (and (re-search-backward comment-start-skip bol t)
1472                             (not (fortran-is-in-string-p (point))))
1473                        (progn
1474                          (skip-chars-backward " \t")
1475                          (< (current-column) (1+ fill-column)))))
1476                  (save-excursion
1477                    (goto-char fill-point)
1478                    (bolp))))
1479         (if (> (save-excursion
1480                  (goto-char fill-point) (current-column))
1481                (1+ fill-column))
1482             (progn (goto-char fill-point)
1483                    (fortran-break-line))
1484           (save-excursion
1485             (if (> (save-excursion
1486                      (goto-char fill-point)
1487                      (current-column))
1488                    (+ (calculate-fortran-indent) fortran-continuation-indent))
1489                 (progn
1490                   (goto-char fill-point)
1491                   (fortran-break-line))))))
1492     ))
1493 (defun fortran-break-line ()
1494   (let ((opoint (point))
1495         (bol (save-excursion (beginning-of-line) (point)))
1496         (eol (save-excursion (end-of-line) (point)))
1497         (comment-string nil))
1498
1499     (save-excursion
1500       (if (and comment-start-skip (fortran-find-comment-start-skip))
1501           (progn
1502             (re-search-backward comment-start-skip bol t)
1503             (setq comment-string (buffer-substring (point) eol))
1504             (delete-region (point) eol))))
1505 ;;; Forward line 1 really needs to go to next non white line
1506     (if (save-excursion (forward-line 1)
1507                         (or (looking-at "     [^ 0\n]")
1508                             (looking-at "\t[1-9]")))
1509         (progn
1510           (end-of-line)
1511           (delete-region (point) (match-end 0))
1512           (delete-horizontal-space)
1513           (fortran-do-auto-fill))
1514       (fortran-split-line))
1515     (if comment-string
1516         (save-excursion
1517           (goto-char bol)
1518           (end-of-line)
1519           (delete-horizontal-space)
1520           (indent-to (fortran-comment-hook))
1521           (insert comment-string)))))
1522
1523 (defun fortran-analyze-file-format ()
1524   "Returns nil if fixed format is used, t if TAB formatting is used.
1525 Use `fortran-tab-mode-default' if no non-comment statements are found in the
1526 file before the end or the first `fortran-analyze-depth' lines."
1527   (let ((i 0))
1528     (save-excursion
1529       (goto-char (point-min))
1530       (setq i 0)
1531       (while (not (or
1532                    (eobp)
1533                    (looking-at "\t")
1534                    (looking-at "      ")
1535                    (> i fortran-analyze-depth)))
1536         (forward-line)
1537         (setq i (1+ i)))
1538       (cond
1539        ((looking-at "\t") t)
1540        ((looking-at "      ") nil)
1541        (fortran-tab-mode-default t)
1542        (t nil)))))
1543
1544 (or (assq 'fortran-tab-mode-string minor-mode-alist)
1545     (setq minor-mode-alist (cons
1546                             '(fortran-tab-mode-string
1547                               (indent-tabs-mode fortran-tab-mode-string))
1548                             minor-mode-alist)))
1549
1550 (provide 'fortran)
1551
1552 ;;; fortran.el ends here
1553