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;;; m4-mode.el --- m4 code editing commands for Emacs
;; Author: Andrew Csillag (drew@staff.prodigy.com)
;; Maintainer: Andrew Csillag (drew@staff.prodigy.com)
;; Keywords: languages, faces
;; This file is part of GNU Emacs.
;; GNU Emacs is free software; you can redistribute it and/or modify
;; it under the terms of the GNU General Public License as published by
;; the Free Software Foundation; either version 2, or (at your option)
;; any later version.
;; GNU Emacs is distributed in the hope that it will be useful,
;; but WITHOUT ANY WARRANTY; without even the implied warranty of
;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
;; GNU General Public License for more details.
;; You should have received a copy of the GNU General Public License
;; along with GNU Emacs; see the file COPYING. If not, write to the
;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
;; Boston, MA 02111-1307, USA.
;;; Commentary:
;; A smart editing mode for m4 macro definitions. It seems to have most of the
;; syntax right (sexp motion commands work, but function motion commands don't).
;; It also sets the font-lock syntax stuff for colorization
;; By Drew Csillag (drew@staff.prodigy.com)
;; $Id: m4-mode.el,v 1.11 1997/05/16 16:03:27 drew Exp $
;; History:
;; Date Version Who Action
;; -------- ------- --- ----
;; 09/13/96 1.0 DC Created
;; 09/26/96 1.1 DC added syntax table stuff so now matches `'s
;; now can use C-c C-b to m4 on buffer,C-c C-r for region
;; added m4-comment-region (C-c C-c)
;; 09/27/96 1.2 DC Redid header comment
;; 1.3 DC more cosmetic fixes
;; 1.4 DC removed m4-comment-region, using comment-region instead
;; 10/03/96 DC added provide line
;; 10/24/96 1.5 DC fixed keyword regexp
;; 10/29/96 1.6 DC added m4_keywords for --prefix-builtins
;; fixed syntax table so _define_ isn't keywordified
;; 10/29/96 1.8 DC fixed a problem where comments go fontified incorrectly
;; if they had quotes in them
;; 11/21/96 1.9 DC collapsed 4 regexps into 1 and removed a duplicate,
;; removed a duplicate backslash
;; 05/16/97 1.10 DC added contributed fixes and enhancements from
;; Martin Buchholz
;; Can now specify options to m4 via m4-program-options
;; Now terminates m4 processes when the buffer send
is
;; done
;; dnl and m4_dnl recognized as comment starters
;; To Do's:
;; * want to make m4-m4-(buffer|region) look sorta like M-x compile look&feel ?
;; * sexp motion commands don't seem to work right
;; to autoload m4 lisp code:
;; (autoload 'm4-mode "m4-mode" nil t)
;;
;; or can use (load "m4-mode") or (require 'm4-mode) to just load it
;;
;; to try to "auto-detect" m4 files:
;; (setq auto-mode-alist
;; (cons '(".*\\.m4$" . m4-mode)
;; auto-mode-alist))
;;; Thanks:
;;; to Akim Demaille and Terry Jones for the bug reports
;;; to Simon Marshall for the regexp tip
;;; to Martin Buchholz for some general fixes
;;; Code:
;;path to the m4 program
(defvar m4-program
(cond
((file-exists-p "/usr/local/bin/m4") "/usr/local/bin/m4")
((file-exists-p "/usr/bin/m4") "/usr/bin/m4")
((file-exists-p "/bin/m4") "/bin/m4")
((file-exists-p "/usr/ccs/bin/m4") "/usr/ccs/bin/m4")
)
)
;;options to m4
(defconst m4-program-options nil)
;;to use --prefix-builtins, you can use
;;(defconst m4-program-options '("-P"))
;;or
;;(defconst m4-program-options '("--prefix-builtins"))
;;thank god for make-regexp.el!
(defvar m4-font-lock-keywords
`(
("\\(\\bdnl\\b\\|\\bm4_dnl\\b\\|^\\#\\).*$" .
font-lock-comment-face)
("\\$[*#@0-9]" . font-lock-variable-name-face)
("\\b\\(builtin\\|change\\(com\\|quote\\|word\\)\\|d\\(e\\(bug\\(file\\|mode\\)\\|cr\\|f\\(ine\\|n\\)\\)\\|iv\\(ert\\|num\\)\\|nl\\|umpdef\\)\\|e\\(rrprint\\|syscmd\\|val\\)\\|f\\(ile\\|ormat\\)\\|gnu\\|i\\(f\\(def\\|else\\)\\|n\\(c\\(lude\\|r\\)\\|d\\(ex\\|ir\\)\\)\\)\\|l\\(en\\|ine\\)\\|m\\(4\\(exit\\|wrap\\)\\|aketemp\\)\\|p\\(atsubst\\|opdef\\|ushdef\\)\\|regexp\\|s\\(hift\\|include\\|ubstr\\|ys\\(cmd\\|val\\)\\)\\|tra\\(ceo\\(ff\\|n\\)\\|nslit\\)\\|un\\(d\\(efine\\|ivert\\)\\|ix\\)\\)\\b"
. font-lock-keyword-face)
("\\b\\(m4_\\(builtin\\|change\\(com\\|quote\\|word\\)\\|d\\(e\\(bug\\(file\\|mode\\)\\|cr\\|f\\(ine\\|n\\)\\)\\|iv\\(ert\\|num\\)\\|nl\\|umpdef\\)\\|e\\(rrprint\\|syscmd\\|val\\)\\|f\\(ile\\|ormat\\)\\|i\\(f\\(def\\|else\\)\\|n\\(c\\(lude\\|r\\)\\|d\\(ex\\|ir\\)\\)\\)\\|l\\(en\\|ine\\)\\|m\\(4\\(_undefine\\|exit\\|wrap\\)\\|aketemp\\)\\|p\\(atsubst\\|opdef\\|ushdef\\)\\|regexp\\|s\\(hift\\|include\\|ubstr\\|ys\\(cmd\\|val\\)\\)\\|tra\\(ceo\\(ff\\|n\\)\\|nslit\\)\\|undivert\\)\\)\\b"
. font-lock-keyword-face)
"default font-lock-keywords")
)
;;this may still need some work
(defvar m4-mode-syntax-table nil
"syntax table used in m4 mode")
(setq m4-mode-syntax-table (make-syntax-table))
(modify-syntax-entry ?` "('" m4-mode-syntax-table)
(modify-syntax-entry ?' ")`" m4-mode-syntax-table)
(modify-syntax-entry ?# "<\n" m4-mode-syntax-table)
(modify-syntax-entry ?\n ">#" m4-mode-syntax-table)
(modify-syntax-entry ?{ "_" m4-mode-syntax-table)
(modify-syntax-entry ?} "_" m4-mode-syntax-table)
(modify-syntax-entry ?* "." m4-mode-syntax-table)
(modify-syntax-entry ?_ "_" m4-mode-syntax-table)
(modify-syntax-entry ?\" "w" m4-mode-syntax-table)
(defvar m4-mode-map
(let ((map (make-sparse-keymap)))
(define-key map "\C-c\C-b" 'm4-m4-buffer)
(define-key map "\C-c\C-r" 'm4-m4-region)
(define-key map "\C-c\C-c" 'comment-region)
map))
(defun m4-end-m4 (process event)
(cond ((equal event "kill\n") (princ "m4 process done"))
(t (princ
(format "Process: %s had the event `%s'" process event)))))
(defun m4-start-m4 ()
(eval (append (append '(start-process "m4process" "*m4 output*"
m4-program)
m4-program-options) '("-e")))
(set-process-sentinel (get-process "m4process") 'm4-end-m4)
)
(defun m4-m4-buffer ()
"send contents of the current buffer to m4"
(interactive)
(m4-start-m4)
(process-send-region "m4process" (point-min) (point-max))
(process-send-eof "m4process")
(switch-to-buffer-other-window "*m4 output*")
(delete-process "m4process")
)
(defun m4-m4-region ()
"send contents of the current region to m4"
(interactive)
(m4-start-m4)
(process-send-region "m4process" (point) (mark))
(process-send-eof "m4process")
(switch-to-buffer-other-window "*m4 output*")
)
(defun m4-mode ()
"A major-mode to edit m4 macro files
\\{m4-mode-map}
"
(interactive)
(kill-all-local-variables)
(use-local-map m4-mode-map)
(make-local-variable 'comment-start)
(setq comment-start "#")
(make-local-variable 'parse-sexp-ignore-comments)
(setq parse-sexp-ignore-comments t)
(make-local-variable 'font-lock-defaults)
(setq major-mode 'm4-mode
mode-name "m4"
font-lock-defaults '(m4-font-lock-keywords nil)
)
(set-syntax-table m4-mode-syntax-table)
(run-hooks 'm4-mode-hook))
(provide 'm4-mode)
;;stuff to play with for debugging
;(char-to-string (char-syntax ?`))
;;;how I generate the nasty looking regexps at the top
;;;(make-regexp '("builtin" "changecom" "changequote" "changeword" "debugfile"
;;; "debugmode" "decr" "define" "defn" "divert" "divnum" "dnl"
;;; "dumpdef" "errprint" "esyscmd" "eval" "file" "format" "gnu"
;;; "ifdef" "ifelse" "include" "incr" "index" "indir" "len" "line"
;;; "m4exit" "m4wrap" "maketemp" "patsubst" "popdef" "pushdef" "regexp"
;;; "shift" "sinclude" "substr" "syscmd" "sysval" "traceoff" "traceon"
;;; "translit" "undefine" "undivert" "unix"))
;;;(make-regexp '("m4_builtin" "m4_changecom" "m4_changequote" "m4_changeword"
;;; "m4_debugfile" "m4_debugmode" "m4_decr" "m4_define" "m4_defn"
;;; "m4_divert" "m4_divnum" "m4_dnl" "m4_dumpdef" "m4_errprint"
;;; "m4_esyscmd" "m4_eval" "m4_file" "m4_format" "m4_ifdef" "m4_ifelse"
;;; "m4_include" "m4_incr" "m4_index" "m4_indir" "m4_len" "m4_line"
;;; "m4_m4exit" "m4_m4wrap" "m4_maketemp" "m4_patsubst" "m4_popdef"
;;; "m4_pushdef" "m4_regexp" "m4_shift" "m4_sinclude" "m4_substr"
;;; "m4_syscmd" "m4_sysval" "m4_traceoff" "m4_traceon" "m4_translit"
;;; "m4_m4_undefine" "m4_undivert"))
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