(c-macro-expansion): Delete ??! trigraph in uniquestring.

[gnu-emacs] / lisp / dos-fns.el

diff --git a/lisp/dos-fns.el b/lisp/dos-fns.el
index b641a886a767717bd13cb50df5448cf425f1023e..924f5a9b76a8a1be901901e0149eb1ea7aa953c2 100644 (file)
--- a/lisp/dos-fns.el
+++ b/lisp/dos-fns.el
@@ -28,6 +28,21 @@
 
 ;;; Code:
 
+;;; Add %t: into the mode line format just after the open-paren.
+(let ((tail (member "   %[(" mode-line-format)))
+  (setcdr tail (cons (purecopy "%t:")
+                    (cdr tail))))
+
+;; Use ";" instead of ":" as a path separator (from files.el).
+(setq path-separator ";")
+
+;; Set the null device (for compile.el).
+(setq grep-null-device "NUL")
+
+;; Set the grep regexp to match entries with drive letters.
+(setq grep-regexp-alist
+  '(("^\\(\\([a-zA-Z]:\\)?[^:( \t\n]+\\)[:( \t]+\\([0-9]+\\)[:) \t]" 1 3)))
+
 ;; This overrides a trivial definition in files.el.
 (defun convert-standard-filename (filename)
   "Convert a standard file's name to something suitable for the current OS.
@@ -78,6 +93,63 @@ with a definition that really does change some file names."
          (aset string (1- (length string)) lastchar))
       (concat dir string))))
 
+(defvar file-name-buffer-file-type-alist
+  '(
+    ("[:/].*config.sys$" . nil)                ; config.sys text
+    ("\\.elc$" . t)                    ; emacs stuff
+    ("\\.\\(obj\\|exe\\|com\\|lib\\|sys\\|chk\\|out\\|bin\\|ico\\|pif\\)$" . t)
+                                       ; MS-Dos stuff
+    ("\\.\\(arc\\|zip\\|pak\\|lzh\\|zoo\\)$" . t)
+                                       ; Packers
+    ("\\.\\(a\\|o\\|tar\\|z\\|gz\\|taz\\)$" . t)
+                                       ; Unix stuff
+    ("\\.tp[ulpw]$" . t)
+                                       ; Borland Pascal stuff
+    ("[:/]tags$" . t)
+                                       ; Emacs TAGS file
+    )
+  "*Alist for distinguishing text files from binary files.
+Each element has the form (REGEXP . TYPE), where REGEXP is matched
+against the file name, and TYPE is nil for text, t for binary.")
+
+(defun find-buffer-file-type (filename)
+  (let ((alist file-name-buffer-file-type-alist)
+       (found nil)
+       (code nil))
+    (let ((case-fold-search t))
+      (setq filename (file-name-sans-versions filename))
+      (while (and (not found) alist)
+       (if (string-match (car (car alist)) filename)
+           (setq code (cdr (car alist))
+                 found t))
+       (setq alist (cdr alist))))
+    (if found
+       (cond((memq code '(nil t)) code)
+            ((and (symbolp code) (fboundp code))
+             (funcall code filename)))
+      default-buffer-file-type)))
+
+(defun find-file-binary (filename) 
+  "Visit file FILENAME and treat it as binary."
+  (interactive "FFind file binary: ")
+  (let ((file-name-buffer-file-type-alist '(("" . t))))
+    (find-file filename)))
+
+(defun find-file-text (filename) 
+  "Visit file FILENAME and treat it as a text file."
+  (interactive "FFind file text: ")
+  (let ((file-name-buffer-file-type-alist '(("" . nil))))
+    (find-file filename)))
+
+(defun find-file-not-found-set-buffer-file-type ()
+  (save-excursion
+    (set-buffer (current-buffer))
+    (setq buffer-file-type (find-buffer-file-type (buffer-file-name))))
+  nil)
+
+;;; To set the default file type on new files.
+(add-hook 'find-file-not-found-hooks 'find-file-not-found-set-buffer-file-type)
+
 (defvar msdos-shells '("command.com" "4dos.com" "ndos.com")
   "*List of shells that use `/c' instead of `-c' and a backslashed command.")