Fix emerge.el on MS-Windows and MS-DOS.

 lisp/emerge.el (emerge-metachars): Separate value for ms-dos and
 windows-nt systems.
 (emerge-protect-metachars): Quote correctly for ms-dos and
 windows-nt systems.

diff --git a/lisp/ChangeLog b/lisp/ChangeLog
index 5bd208b..602b60c 100644 (file)
--- a/lisp/ChangeLog
+++ b/lisp/ChangeLog
@@ -1,3 +1,10 @@
+2011-03-19  Eli Zaretskii  <eliz@gnu.org>
+
+       * emerge.el (emerge-metachars): Separate value for ms-dos and
+       windows-nt systems.
+       (emerge-protect-metachars): Quote correctly for ms-dos and
+       windows-nt systems.
+
 2011-03-15  Ralph Schleicher  <rs@ralph-schleicher.de>
 
        * info.el (info-initialize): Replace all uses of `:' with

diff --git a/lisp/emerge.el b/lisp/emerge.el
index 997077a..ffae552 100644 (file)
--- a/lisp/emerge.el
+++ b/lisp/emerge.el
@@ -3187,21 +3187,26 @@ See also `auto-save-file-name-p'."
 
 ;; Metacharacters that have to be protected from the shell when executing
 ;; a diff/diff3 command.
-(defcustom emerge-metachars "[ \t\n!\"#$&'()*;<=>?[\\^`{|~]"
-  "Characters that must be quoted with \\ when used in a shell command line.
+(defcustom emerge-metachars
+  (if (memq system-type '(ms-dos windows-nt))
+      "[ \t\"<>|?*^&=]"
+    "[ \t\n!\"#$&'()*;<=>?[\\^`{|~]")
+  "Characters that must be quoted when used in a shell command line.
 More precisely, a [...] regexp to match any one such character."
   :type 'regexp
   :group 'emerge)
 
 ;; Quote metacharacters (using \) when executing a diff/diff3 command.
 (defun emerge-protect-metachars (s)
-  (let ((limit 0))
-    (while (string-match emerge-metachars s limit)
-      (setq s (concat (substring s 0 (match-beginning 0))
-                     "\\"
-                     (substring s (match-beginning 0))))
-      (setq limit (1+ (match-end 0)))))
-  s)
+  (if (memq system-type '(ms-dos windows-nt))
+      (shell-quote-argument s)
+    (let ((limit 0))
+      (while (string-match emerge-metachars s limit)
+       (setq s (concat (substring s 0 (match-beginning 0))
+                       "\\"
+                       (substring s (match-beginning 0))))
+       (setq limit (1+ (match-end 0)))))
+    s))
 
 (provide 'emerge)