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-rw-r--r--contrib/emacs/git.el11
1 files changed, 11 insertions, 0 deletions
diff --git a/contrib/emacs/git.el b/contrib/emacs/git.el
index 5496a1b..ebd00ef 100644
--- a/contrib/emacs/git.el
+++ b/contrib/emacs/git.el
@@ -767,6 +767,16 @@ The default is to fall back to the git repository config, then to `add-log-maili
(git-setup-diff-buffer
(apply #'git-run-command-buffer "*git-diff*" "diff-index" "-p" "-M" "HEAD" "--" (git-get-filenames files)))))
+(defun git-diff-file-merge-head (arg)
+ "Diff the marked file(s) against the first merge head (or the nth one with a numeric prefix)."
+ (interactive "p")
+ (let ((files (git-marked-files))
+ (merge-heads (git-get-merge-heads)))
+ (unless merge-heads (error "No merge in progress"))
+ (git-setup-diff-buffer
+ (apply #'git-run-command-buffer "*git-diff*" "diff-index" "-p" "-M"
+ (or (nth (1- arg) merge-heads) "HEAD") "--" (git-get-filenames files)))))
+
(defun git-diff-unmerged-file (stage)
"Diff the marked unmerged file(s) against the specified stage."
(let ((files (git-marked-files)))
@@ -959,6 +969,7 @@ The default is to fall back to the git repository config, then to `add-log-maili
(define-key diff-map "=" 'git-diff-file)
(define-key diff-map "e" 'git-diff-file-idiff)
(define-key diff-map "E" 'git-find-file-imerge)
+ (define-key diff-map "h" 'git-diff-file-merge-head)
(define-key diff-map "m" 'git-diff-file-mine)
(define-key diff-map "o" 'git-diff-file-other)
(setq git-status-mode-map map)))