el/dot-emacs.el: Do brace matching in m4 files.
[profile] / el / dot-emacs.el
index ffe360a..80f0f81 100644 (file)
@@ -190,6 +190,29 @@ fringes is not taken out of the allowance for WIDTH, unlike
       (other-window 1))
     (select-window win)))
 
       (other-window 1))
     (select-window win)))
 
+;; Don't raise windows unless I say so.
+
+(defvar mdw-inhibit-raise-frame nil
+  "*Whether `raise-frame' should do nothing when the frame is mapped.")
+
+(defadvice raise-frame
+    (around mdw-inhibit (&optional frame) activate compile)
+  "Don't actually do anything if `mdw-inhibit-raise-frame' is true, and the
+frame is actually mapped on the screen."
+  (if mdw-inhibit-raise-frame
+      (make-frame-visible frame)
+    ad-do-it))
+
+(defmacro mdw-advise-to-inhibit-raise-frame (function)
+  "Advise the FUNCTION not to raise frames, even if it wants to."
+  `(defadvice ,function
+       (around mdw-inhibit-raise (&rest hunoz) activate compile)
+     "Don't raise the window unless you have to."
+     (let ((mdw-inhibit-raise-frame t))
+       ad-do-it)))
+
+(mdw-advise-to-inhibit-raise-frame select-frame-set-input-focus)
+
 ;; Transient mark mode hacks.
 
 (defadvice exchange-point-and-mark
 ;; Transient mark mode hacks.
 
 (defadvice exchange-point-and-mark
@@ -757,7 +780,7 @@ case."
   (and (fboundp 'gtags-mode)
        (gtags-mode))
   (if (fboundp 'hs-minor-mode)
   (and (fboundp 'gtags-mode)
        (gtags-mode))
   (if (fboundp 'hs-minor-mode)
-      (hs-minor-mode t)
+      (trap (hs-minor-mode t))
     (outline-minor-mode t))
   (reveal-mode t)
   (trap (turn-on-font-lock)))
     (outline-minor-mode t))
   (reveal-mode t)
   (trap (turn-on-font-lock)))
@@ -916,6 +939,7 @@ doesn't match any of the regular expressions in
 (mdw-define-face font-lock-string-face
   (((class mono)) :weight bold)
   (((class color)) :foreground "SkyBlue1"))
 (mdw-define-face font-lock-string-face
   (((class mono)) :weight bold)
   (((class color)) :foreground "SkyBlue1"))
+
 (mdw-define-face message-separator
   (t :background "red" :foreground "white" :weight bold))
 (mdw-define-face message-cited-text
 (mdw-define-face message-separator
   (t :background "red" :foreground "white" :weight bold))
 (mdw-define-face message-cited-text
@@ -966,6 +990,10 @@ doesn't match any of the regular expressions in
   (((class color) (type x)) :background "RoyalBlue4")
   (t :underline t))
 
   (((class color) (type x)) :background "RoyalBlue4")
   (t :underline t))
 
+(mdw-define-face dylan-header-background
+  (((class color) (type x)) :background "NavyBlue")
+  (t :background "blue"))
+
 (mdw-define-face magit-diff-add
   (t :foreground "green"))
 (mdw-define-face magit-diff-del
 (mdw-define-face magit-diff-add
   (t :foreground "green"))
 (mdw-define-face magit-diff-del
@@ -974,6 +1002,21 @@ doesn't match any of the regular expressions in
   (t :weight bold))
 (mdw-define-face magit-diff-hunk-header
   (t :foreground "SkyBlue1"))
   (t :weight bold))
 (mdw-define-face magit-diff-hunk-header
   (t :foreground "SkyBlue1"))
+(mdw-define-face magit-item-highlight
+  (((type tty)) :background "blue")
+  (t :background "DarkSeaGreen4"))
+(mdw-define-face magit-log-head-label-remote
+  (((type tty)) :background "cyan" :foreground "green")
+  (t :background "grey11" :foreground "DarkSeaGreen2" :box t))
+(mdw-define-face magit-log-head-label-local
+  (((type tty)) :background "cyan" :foreground "yellow")
+  (t :background "grey11" :foreground "LightSkyBlue1" :box t))
+(mdw-define-face magit-log-head-label-tags
+  (((type tty)) :background "red" :foreground "yellow")
+  (t :background "LemonChiffon1" :foreground "goldenrod4" :box t))
+(mdw-define-face magit-log-graph
+  (((type tty)) :foreground "magenta")
+  (t :foreground "grey80"))
 
 (mdw-define-face erc-input-face
   (t :foreground "red"))
 
 (mdw-define-face erc-input-face
   (t :foreground "red"))
@@ -1516,6 +1559,126 @@ doesn't match any of the regular expressions in
   "Major mode for editing C# code.")
 
 ;;;--------------------------------------------------------------------------
   "Major mode for editing C# code.")
 
 ;;;--------------------------------------------------------------------------
+;;; F# programming configuration.
+
+(setq fsharp-indent-offset 2)
+
+(defun mdw-fontify-fsharp ()
+
+  (let ((punct "=<>+-*/|&%!@?"))
+    (do ((i 0 (1+ i)))
+       ((>= i (length punct)))
+      (modify-syntax-entry (aref punct i) ".")))
+
+  (modify-syntax-entry ?_ "_")
+  (modify-syntax-entry ?( "(")
+  (modify-syntax-entry ?) ")")
+
+  (setq indent-tabs-mode nil)
+
+  (let ((fsharp-keywords
+        (mdw-regexps "abstract" "and" "as" "assert" "atomic"
+                     "base" "begin" "break"
+                     "checked" "class" "component" "const" "constraint"
+                     "constructor" "continue"
+                     "default" "delegate" "do" "done" "downcast" "downto"
+                     "eager" "elif" "else" "end" "exception" "extern"
+                     "false" "finally" "fixed" "for" "fori" "fun" "function"
+                     "functor"
+                     "global"
+                     "if" "in" "include" "inherit" "inline" "interface"
+                     "internal"
+                     "lazy" "let"
+                     "match" "measure" "member" "method" "mixin" "module"
+                     "mutable"
+                     "namespace" "new" "null"
+                     "object""of" "open" "or" "override"
+                     "parallel" "params" "private" "process" "protected"
+                     "public" "pure"
+                     "rec" "recursive" "return"
+                     "sealed" "sig" "static" "struct"
+                     "tailcall" "then" "to" "trait" "true" "try" "type"
+                     "upcast" "use"
+                     "val" "virtual" "void" "volatile"
+                     "when" "while" "with"
+                     "yield"))
+
+       (fsharp-builtins
+        (mdw-regexps "asr" "land" "lor" "lsl" "lsr" "lxor" "mod"))
+
+       (bang-keywords
+        (mdw-regexps "do" "let" "return" "use" "yield"))
+
+       (preprocessor-keywords
+        (mdw-regexps "if" "indent" "else" "endif")))
+
+    (setq font-lock-keywords
+         (list (list (concat "\\(^\\|[^\"]\\)"
+                             "\\(" "(\\*"
+                                   "[^*]*\\*+"
+                                   "\\(" "[^)*]" "[^*]*" "\\*+" "\\)*"
+                                   ")"
+                             "\\|"
+                                   "//.*"
+                             "\\)")
+                     '(2 font-lock-comment-face))
+
+               (list (concat "'" "\\("
+                                   "\\\\"
+                                   "\\(" "[ntbr'\\]"
+                                   "\\|" "[0-9][0-9][0-9]"
+                                   "\\|" "u" "[0-9a-fA-F]\\{4\\}"
+                                   "\\|" "U" "[0-9a-fA-F]\\{8\\}"
+                                   "\\)"
+                                 "\\|"
+                                 "." "\\)" "'"
+                             "\\|"
+                             "\"" "[^\"\\]*"
+                                   "\\(" "\\\\" "\\(.\\|\n\\)"
+                                         "[^\"\\]*" "\\)*"
+                             "\\(\"\\|\\'\\)")
+                     '(0 font-lock-string-face))
+
+               (list (concat "\\_<\\(" bang-keywords "\\)!" "\\|"
+                             "^#[ \t]*\\(" preprocessor-keywords "\\)\\_>"
+                             "\\|"
+                             "\\_<\\(" fsharp-keywords "\\)\\_>")
+                     '(0 font-lock-keyword-face))
+               (list (concat "\\<\\(" fsharp-builtins "\\)\\_>")
+                     '(0 font-lock-variable-name-face))
+
+               (list (concat "\\_<"
+                             "\\(" "0[bB][01]+" "\\|"
+                                   "0[oO][0-7]+" "\\|"
+                                   "0[xX][0-9a-fA-F]+" "\\)"
+                             "\\(" "lf\\|LF" "\\|"
+                                   "[uU]?[ysnlL]?" "\\)"
+                             "\\|"
+                             "\\_<"
+                             "[0-9]+" "\\("
+                               "[mMQRZING]"
+                               "\\|"
+                               "\\(\\.[0-9]*\\)?"
+                               "\\([eE][-+]?[0-9]+\\)?"
+                               "[fFmM]?"
+                               "\\|"
+                               "[uU]?[ysnlL]?"
+                             "\\)")
+                     '(0 mdw-number-face))
+
+               (list "\\(\\s.\\|\\s(\\|\\s)\\|\\s\\\\|\\s/\\)"
+                     '(0 mdw-punct-face)))))
+
+  (mdw-post-config-mode-hack))
+
+(defun mdw-fontify-inferior-fsharp ()
+  (mdw-fontify-fsharp)
+  (setq font-lock-keywords
+       (append (list (list "^[#-]" '(0 font-lock-comment-face))
+                     (list "^>" '(0 font-lock-keyword-face)))
+               font-lock-keywords)))
+
+;;;--------------------------------------------------------------------------
 ;;; Go programming configuration.
 
 (defun mdw-fontify-go ()
 ;;; Go programming configuration.
 
 (defun mdw-fontify-go ()
@@ -1526,7 +1689,16 @@ doesn't match any of the regular expressions in
                      "default" "defer" "else" "fallthrough" "for"
                      "func" "go" "goto" "if" "import"
                      "interface" "map" "package" "range" "return"
                      "default" "defer" "else" "fallthrough" "for"
                      "func" "go" "goto" "if" "import"
                      "interface" "map" "package" "range" "return"
-                     "select" "struct" "switch" "type" "var")))
+                     "select" "struct" "switch" "type" "var"))
+       (go-intrinsics
+        (mdw-regexps "bool" "byte" "complex64" "complex128" "error"
+                     "float32" "float64" "int" "uint8" "int16" "int32"
+                     "int64" "rune" "string" "uint" "uint8" "uint16"
+                     "uint32" "uint64" "uintptr" "void"
+                     "false" "iota" "nil" "true"
+                     "init" "main"
+                     "append" "cap" "copy" "delete" "imag" "len" "make"
+                     "new" "panic" "real" "recover")))
 
     (setq font-lock-keywords
          (list
 
     (setq font-lock-keywords
          (list
@@ -1534,6 +1706,26 @@ doesn't match any of the regular expressions in
           ;; Handle the keywords defined above.
           (list (concat "\\<\\(" go-keywords "\\)\\>")
                 '(0 font-lock-keyword-face))
           ;; Handle the keywords defined above.
           (list (concat "\\<\\(" go-keywords "\\)\\>")
                 '(0 font-lock-keyword-face))
+          (list (concat "\\<\\(" go-intrinsics "\\)\\>")
+                '(0 font-lock-variable-name-face))
+
+          ;; Strings and characters.
+          (list (concat "'"
+                        "\\(" "[^\\']" "\\|"
+                              "\\\\"
+                              "\\(" "[abfnrtv\\'\"]" "\\|"
+                                    "[0-7]\\{3\\}" "\\|"
+                                    "x" "[0-9A-Fa-f]\\{2\\}" "\\|"
+                                    "u" "[0-9A-Fa-f]\\{4\\}" "\\|"
+                                    "U" "[0-9A-Fa-f]\\{8\\}" "\\)" "\\)"
+                        "'"
+                        "\\|"
+                        "\""
+                        "\\(" "[^\n\\\"]+" "\\|" "\\\\." "\\)*"
+                        "\\(\"\\|$\\)"
+                        "\\|"
+                        "`" "[^`]+" "`")
+                '(0 font-lock-string-face))
 
           ;; Handle numbers too.
           ;;
 
           ;; Handle numbers too.
           ;;
@@ -1861,9 +2053,9 @@ strip numbers instead."
 
         ;; And anything else is punctuation.
         (list "\\(\\s.\\|\\s(\\|\\s)\\|\\s\\\\|\\s/\\)"
 
         ;; And anything else is punctuation.
         (list "\\(\\s.\\|\\s(\\|\\s)\\|\\s\\\\|\\s/\\)"
-              '(0 mdw-punct-face)))
+              '(0 mdw-punct-face))))
 
 
-  (mdw-post-config-mode-hack))
+  (mdw-post-config-mode-hack)
   (run-hooks 'arm-assembler-mode-hook))
 
 ;;;--------------------------------------------------------------------------
   (run-hooks 'arm-assembler-mode-hook))
 
 ;;;--------------------------------------------------------------------------
@@ -1893,6 +2085,118 @@ strip numbers instead."
   (mdw-post-config-mode-hack))
 
 ;;;--------------------------------------------------------------------------
   (mdw-post-config-mode-hack))
 
 ;;;--------------------------------------------------------------------------
+;;; Dylan programming configuration.
+
+(defun mdw-fontify-dylan ()
+
+  (make-local-variable 'font-lock-keywords)
+
+  ;; Horrors.  `dylan-mode' sets the `major-mode' name after calling this
+  ;; hook, which undoes all of our configuration.
+  (setq major-mode 'dylan-mode)
+  (font-lock-set-defaults)
+
+  (let* ((word "[-_a-zA-Z!*@<>$%]+")
+        (dylan-keywords (mdw-regexps
+
+                         "C-address" "C-callable-wrapper" "C-function"
+                         "C-mapped-subtype" "C-pointer-type" "C-struct"
+                         "C-subtype" "C-union" "C-variable"
+
+                         "above" "abstract" "afterwards" "all"
+                         "begin" "below" "block" "by"
+                         "case" "class" "cleanup" "constant" "create"
+                         "define" "domain"
+                         "else" "elseif" "end" "exception" "export"
+                         "finally" "for" "from" "function"
+                         "generic"
+                         "handler"
+                         "if" "in" "instance" "interface" "iterate"
+                         "keyed-by"
+                         "let" "library" "local"
+                         "macro" "method" "module"
+                         "otherwise"
+                         "profiling"
+                         "select" "slot" "subclass"
+                         "table" "then" "to"
+                         "unless" "until" "use"
+                         "variable" "virtual"
+                         "when" "while"))
+        (sharp-keywords (mdw-regexps
+                         "all-keys" "key" "next" "rest" "include"
+                         "t" "f")))
+    (setq font-lock-keywords
+         (list (list (concat "\\<\\(" dylan-keywords
+                             "\\|" "with\\(out\\)?-" word
+                             "\\)\\>")
+                     '(0 font-lock-keyword-face))
+               (list (concat "\\<" word ":" "\\|"
+                             "#\\(" sharp-keywords "\\)\\>")
+                     '(0 font-lock-variable-name-face))
+               (list (concat "\\("
+                             "\\([-+]\\|\\<\\)[0-9]+" "\\("
+                               "\\(\\.[0-9]+\\)?" "\\([eE][-+][0-9]+\\)?"
+                               "\\|" "/[0-9]+"
+                             "\\)"
+                             "\\|" "\\.[0-9]+" "\\([eE][-+][0-9]+\\)?"
+                             "\\|" "#b[01]+"
+                             "\\|" "#o[0-7]+"
+                             "\\|" "#x[0-9a-zA-Z]+"
+                             "\\)\\>")
+                     '(0 mdw-number-face))
+               (list (concat "\\("
+                             "\\s.\\|\\s(\\|\\s)\\|\\s\\\\|\\s/\\|"
+                             "\\_<[-+*/=<>:&|]+\\_>"
+                             "\\)")
+                     '(0 mdw-punct-face)))))
+
+  (mdw-post-config-mode-hack))
+
+;;;--------------------------------------------------------------------------
+;;; Algol 68 configuration.
+
+(setq a68-indent-step 2)
+
+(defun mdw-fontify-algol-68 ()
+
+  ;; Fix up the syntax table.
+  (modify-syntax-entry ?# "!" a68-mode-syntax-table)
+  (dolist (ch '(?- ?+ ?= ?< ?> ?* ?/ ?| ?&))
+    (modify-syntax-entry ch "." a68-mode-syntax-table))
+
+  (make-local-variable 'font-lock-keywords)
+
+  (let ((not-comment
+        (let ((word "COMMENT"))
+          (do ((regexp (concat "[^" (substring word 0 1) "]+")
+                       (concat regexp "\\|"
+                               (substring word 0 i)
+                               "[^" (substring word i (1+ i)) "]"))
+               (i 1 (1+ i)))
+              ((>= i (length word)) regexp)))))
+    (setq font-lock-keywords
+         (list (list (concat "\\<COMMENT\\>"
+                             "\\(" not-comment "\\)\\{0,5\\}"
+                             "\\(\\'\\|\\<COMMENT\\>\\)")
+                     '(0 font-lock-comment-face))
+               (list (concat "\\<CO\\>"
+                             "\\([^C]+\\|C[^O]\\)\\{0,5\\}"
+                             "\\($\\|\\<CO\\>\\)")
+                     '(0 font-lock-comment-face))
+               (list "\\<[A-Z_]+\\>"
+                     '(0 font-lock-keyword-face))
+               (list (concat "\\<"
+                             "[0-9]+"
+                             "\\(\\.[0-9]+\\)?"
+                             "\\([eE][-+]?[0-9]+\\)?"
+                             "\\>")
+                     '(0 mdw-number-face))
+               (list "\\s.\\|\\s(\\|\\s)\\|\\s\\\\|\\s/"
+                     '(0 mdw-punct-face)))))
+
+  (mdw-post-config-mode-hack))
+
+;;;--------------------------------------------------------------------------
 ;;; REXX configuration.
 
 (defun mdw-rexx-electric-* ()
 ;;; REXX configuration.
 
 (defun mdw-rexx-electric-* ()
@@ -2025,32 +2329,73 @@ strip numbers instead."
 (defun mdw-fontify-haskell ()
 
   ;; Fiddle with syntax table to get comments right.
 (defun mdw-fontify-haskell ()
 
   ;; Fiddle with syntax table to get comments right.
-  (modify-syntax-entry ?' "\"")
-  (modify-syntax-entry ?- ". 123")
-  (modify-syntax-entry ?{ ". 1b")
-  (modify-syntax-entry ?} ". 4b")
+  (modify-syntax-entry ?' "_")
+  (modify-syntax-entry ?- ". 12")
   (modify-syntax-entry ?\n ">")
 
   (modify-syntax-entry ?\n ">")
 
+  ;; Make punctuation be punctuation
+  (let ((punct "=<>+-*/|&%!@?$.^:#`"))
+    (do ((i 0 (1+ i)))
+       ((>= i (length punct)))
+      (modify-syntax-entry (aref punct i) ".")))
+
   ;; Set fill prefix.
   (mdw-standard-fill-prefix "\\([ \t]*{?--?[ \t]*\\)")
 
   ;; Fiddle with fontification.
   (make-local-variable 'font-lock-keywords)
   (let ((haskell-keywords
   ;; Set fill prefix.
   (mdw-standard-fill-prefix "\\([ \t]*{?--?[ \t]*\\)")
 
   ;; Fiddle with fontification.
   (make-local-variable 'font-lock-keywords)
   (let ((haskell-keywords
-        (mdw-regexps "as" "case" "ccall" "class" "data" "default"
-                     "deriving" "do" "else" "foreign" "hiding" "if"
-                     "import" "in" "infix" "infixl" "infixr" "instance"
-                     "let" "module" "newtype" "of" "qualified" "safe"
-                     "stdcall" "then" "type" "unsafe" "where")))
+        (mdw-regexps "as"
+                     "case" "ccall" "class"
+                     "data" "default" "deriving" "do"
+                     "else" "exists"
+                     "forall" "foreign"
+                     "hiding"
+                     "if" "import" "in" "infix" "infixl" "infixr" "instance"
+                     "let"
+                     "mdo" "module"
+                     "newtype"
+                     "of"
+                     "proc"
+                     "qualified"
+                     "rec"
+                     "safe" "stdcall"
+                     "then" "type"
+                     "unsafe"
+                     "where"))
+       (control-sequences
+        (mdw-regexps "ACK" "BEL" "BS" "CAN" "CR" "DC1" "DC2" "DC3" "DC4"
+                     "DEL" "DLE" "EM" "ENQ" "EOT" "ESC" "ETB" "ETX" "FF"
+                     "FS" "GS" "HT" "LF" "NAK" "NUL" "RS" "SI" "SO" "SOH"
+                     "SP" "STX" "SUB" "SYN" "US" "VT")))
 
     (setq font-lock-keywords
          (list
 
     (setq font-lock-keywords
          (list
-          (list "--.*$"
+          (list (concat "{-" "[^-]*" "\\(-+[^-}][^-]*\\)*"
+                             "\\(-+}\\|-*\\'\\)"
+                        "\\|"
+                        "--.*$")
                 '(0 font-lock-comment-face))
                 '(0 font-lock-comment-face))
-          (list (concat "\\<\\(" haskell-keywords "\\)\\>")
+          (list (concat "\\_<\\(" haskell-keywords "\\)\\_>")
                 '(0 font-lock-keyword-face))
                 '(0 font-lock-keyword-face))
-          (list (concat "\\<0\\([xX][0-9a-fA-F]+\\|[0-7]+\\)\\|"
-                        "\\<[0-9][0-9_]*\\(\\.[0-9]*\\|\\)"
+          (list (concat "'\\("
+                        "[^\\]"
+                        "\\|"
+                        "\\\\"
+                        "\\(" "[abfnrtv\\\"']" "\\|"
+                              "^" "\\(" control-sequences "\\|"
+                                        "[]A-Z@[\\^_]" "\\)" "\\|"
+                              "\\|"
+                              "[0-9]+" "\\|"
+                              "[oO][0-7]+" "\\|"
+                              "[xX][0-9A-Fa-f]+"
+                        "\\)"
+                        "\\)'")
+                '(0 font-lock-string-face))
+          (list "\\_<[A-Z]\\(\\sw+\\|\\s_+\\)*\\_>"
+                '(0 font-lock-variable-name-face))
+          (list (concat "\\_<0\\([xX][0-9a-fA-F]+\\|[oO][0-7]+\\)\\|"
+                        "\\_<[0-9]+\\(\\.[0-9]*\\|\\)"
                         "\\([eE]\\([-+]\\|\\)[0-9]+\\|\\)")
                 '(0 mdw-number-face))
           (list "\\(\\s.\\|\\s(\\|\\s)\\|\\s\\\\|\\s/\\)"
                         "\\([eE]\\([-+]\\|\\)[0-9]+\\|\\)")
                 '(0 mdw-number-face))
           (list "\\(\\s.\\|\\s(\\|\\s)\\|\\s\\\\|\\s/\\)"
@@ -2599,9 +2944,26 @@ setting once it's actually been made."
   ;; Not much fontification needed.
   (make-local-variable 'font-lock-keywords)
   (setq font-lock-keywords
   ;; Not much fontification needed.
   (make-local-variable 'font-lock-keywords)
   (setq font-lock-keywords
-       (list
-        (list "\\(\\s.\\|\\s(\\|\\s)\\|\\s\\\\|\\s/\\)"
-              '(0 mdw-punct-face))))
+       (list (list (concat "\\("
+                           "\\_<[-+]?"
+                           "\\(" "[0-9]+/[0-9]+"
+                           "\\|" "\\(" "[0-9]+" "\\(\\.[0-9]*\\)?" "\\|"
+                                       "\\.[0-9]+" "\\)"
+                                 "\\([dDeEfFlLsS][-+]?[0-9]+\\)?"
+                           "\\)"
+                           "\\|"
+                           "#"
+                           "\\(" "x" "[-+]?"
+                                 "[0-9A-Fa-f]+" "\\(/[0-9A-Fa-f]+\\)?"
+                           "\\|" "o" "[-+]?" "[0-7]+" "\\(/[0-7]+\\)?"
+                           "\\|" "b" "[-+]?" "[01]+" "\\(/[01]+\\)?"
+                           "\\|" "[0-9]+" "r" "[-+]?"
+                                 "[0-9a-zA-Z]+" "\\(/[0-9a-zA-Z]+\\)?"
+                           "\\)"
+                           "\\)\\_>")
+                   '(0 mdw-number-face))
+             (list "\\(\\s.\\|\\s(\\|\\s)\\|\\s\\\\|\\s/\\)"
+                   '(0 mdw-punct-face))))
 
   (mdw-post-config-mode-hack))
 
 
   (mdw-post-config-mode-hack))
 
@@ -2612,6 +2974,13 @@ setting once it's actually been made."
        (indent-for-tab-command)))
 
 (defun mdw-setup-m4 ()
        (indent-for-tab-command)))
 
 (defun mdw-setup-m4 ()
+
+  ;; Inexplicably, Emacs doesn't match braces in m4 mode.  This is very
+  ;; annoying: fix it.
+  (modify-syntax-entry ?{ "(")
+  (modify-syntax-entry ?} ")")
+
+  ;; Fill prefix.
   (mdw-standard-fill-prefix "\\([ \t]*\\(?:#+\\|\\<dnl\\>\\)[ \t]*\\)"))
 
 ;;;--------------------------------------------------------------------------
   (mdw-standard-fill-prefix "\\([ \t]*\\(?:#+\\|\\<dnl\\>\\)[ \t]*\\)"))
 
 ;;;--------------------------------------------------------------------------