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-rw-r--r--lisp/diff-mode.el2
1 files changed, 1 insertions, 1 deletions
diff --git a/lisp/diff-mode.el b/lisp/diff-mode.el
index 8d61e0ba0fc..c4fac402dbf 100644
--- a/lisp/diff-mode.el
+++ b/lisp/diff-mode.el
@@ -1115,7 +1115,7 @@ Only works for unified diffs."
;; A context diff.
((eq (char-after) ?*)
- (if (not (looking-at "\\*\\{15\\}\n\\*\\*\\* \\([0-9]+\\),\\([0-9]+\\) \\*\\*\\*\\*"))
+ (if (not (looking-at "\\*\\{15\\}\\(?: .*\\)?\n\\*\\*\\* \\([0-9]+\\),\\([0-9]+\\) \\*\\*\\*\\*"))
(error "Unrecognized context diff first hunk header format")
(forward-line 2)
(diff-sanity-check-context-hunk-half