* vc-hg.el (vc-hg-program): New var.

Suggested by Norman Gray <norman@astro.gla.ac.uk>.
(vc-hg-state, vc-hg-working-revision, vc-hg-command): Use it.

2 files changed, 14 insertions, 4 deletions

diff --git a/lisp/ChangeLog b/lisp/ChangeLog
index d0607f72f7e..c1e446c3138 100644
--- a/lisp/ChangeLog
+++ b/lisp/ChangeLog
@@ -1,3 +1,9 @@
+2010-11-17  Stefan Monnier  <monnier@iro.umontreal.ca>
+
+        * vc-hg.el (vc-hg-program): New var.
+        Suggested by Norman Gray <norman@astro.gla.ac.uk>.
+        (vc-hg-state, vc-hg-working-revision, vc-hg-command): Use it.
+
 2010-11-17  Glenn Morris  <rgm@gnu.org>
 
         * emacs-lisp/autoload.el (autoload-find-destination): The function
diff --git a/lisp/vc-hg.el b/lisp/vc-hg.el
index 2339f887a34..52b74870427 100644
--- a/lisp/vc-hg.el
+++ b/lisp/vc-hg.el
@@ -133,6 +133,10 @@ If nil, use the value of `vc-diff-switches'.  If t, use no switches."
   :version "23.1"
   :group 'vc)
 
+(defcustom vc-hg-program "hg"
+  "Name of the Mercurial executable (excluding any arguments)."
+  :type 'string
+  :group 'vc)
 
 ;;; Properties of the backend
 
@@ -173,7 +177,7 @@ If nil, use the value of `vc-diff-switches'.  If t, use no switches."
                              (append (list "TERM=dumb" "LANGUAGE=C")
                                      process-environment)))
                         (process-file
-                         "hg" nil t nil
+                         vc-hg-program nil t nil
                          "--config" "alias.status=status"
                          "--config" "defaults.status="
                          "status" "-A" (file-relative-name file)))
@@ -211,7 +215,7 @@ If nil, use the value of `vc-diff-switches'.  If t, use no switches."
                       (let ((process-environment avoid-local-env))
                         ;; Ignore all errors.
                         (process-file
-                         "hg" nil t nil
+                         vc-hg-program nil t nil
                          "--config" "alias.parents=parents"
                          "--config" "defaults.parents="
                          "parents" "--template" "{rev}" (file-relative-name file)))
@@ -226,7 +230,7 @@ If nil, use the value of `vc-diff-switches'.  If t, use no switches."
             (condition-case nil
                 (let ((process-environment avoid-local-env))
                   (process-file
-                   "hg" nil nil nil
+                   vc-hg-program nil nil nil
                    ;; We use "log" here, if there's a faster command
                    ;; that returns true for an 'added file and false
                    ;; for an 'unregistered one, we could use that.
@@ -619,7 +623,7 @@ REV is the revision to check out into WORKFILE."
   "A wrapper around `vc-do-command' for use in vc-hg.el.
 The difference to vc-do-command is that this function always invokes `hg',
 and that it passes `vc-hg-global-switches' to it before FLAGS."
-  (apply 'vc-do-command (or buffer "*vc*") okstatus "hg" file-or-list
+  (apply 'vc-do-command (or buffer "*vc*") okstatus vc-hg-program file-or-list
          (if (stringp vc-hg-global-switches)
              (cons vc-hg-global-switches flags)
            (append vc-hg-global-switches