Resurrect git-rerere to contrib/examples

diff --git a/contrib/emacs/git.el b/contrib/emacs/git.el
index a8bf0ef883358c7eaf9a13dde8f371a86ff840f0..4fa853fae76dc2ac132e489f5f1b630b3fc0f1de 100644 (file)
--- a/contrib/emacs/git.el
+++ b/contrib/emacs/git.el
@@ -185,9 +185,8 @@ if there is already one that displays the same directory."
 
 (defun git-call-process-env (buffer env &rest args)
   "Wrapper for call-process that sets environment strings."
-  (if env
-      (apply #'call-process "env" nil buffer nil
-             (append (git-get-env-strings env) (list "git") args))
+  (let ((process-environment (append (git-get-env-strings env)
+                                     process-environment)))
     (apply #'call-process "git" nil buffer nil args)))
 
 (defun git-call-process-display-error (&rest args)
@@ -204,7 +203,7 @@ if there is already one that displays the same directory."
 
 (defun git-call-process-env-string (env &rest args)
   "Wrapper for call-process that sets environment strings,
-and returns the process output as a string."
+and returns the process output as a string, or nil if the git failed."
   (with-temp-buffer
     (and (eq 0 (apply #' git-call-process-env t env args))
          (buffer-string))))
@@ -729,7 +728,7 @@ Return the list of files that haven't been handled."
 (defun git-run-ls-files-with-excludes (status files default-state &rest options)
   "Run git-ls-files on FILES with appropriate --exclude-from options."
   (let ((exclude-files (git-get-exclude-files)))
-    (apply #'git-run-ls-files status files default-state "--directory"
+    (apply #'git-run-ls-files status files default-state "--directory" "--no-empty-directory"
            (concat "--exclude-per-directory=" git-per-dir-ignore-file)
            (append options (mapcar (lambda (f) (concat "--exclude-from=" f)) exclude-files)))))
 
@@ -1300,7 +1299,7 @@ Return the list of files that haven't been handled."
   (let (author-name author-email subject date msg)
     (with-temp-buffer
       (let ((coding-system (git-get-logoutput-coding-system)))
-        (git-call-process-env t nil "log" "-1" commit)
+        (git-call-process-env t nil "log" "-1" "--pretty=medium" commit)
         (goto-char (point-min))
         (when (re-search-forward "^Author: *\\(.*\\) <\\(.*\\)>$" nil t)
           (setq author-name (match-string 1))
@@ -1546,7 +1545,7 @@ Commands:
         (with-current-buffer buffer
           (when (and list-buffers-directory
                      (string-equal fulldir (expand-file-name list-buffers-directory))
-                     (string-match "\\*git-status\\*$" (buffer-name buffer)))
+                    (eq major-mode 'git-status-mode))
             (setq found buffer))))
       (setq list (cdr list)))
     found))