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-rw-r--r--Documentation/gitk.txt8
1 files changed, 6 insertions, 2 deletions
diff --git a/Documentation/gitk.txt b/Documentation/gitk.txt
index 1eabb0aaf3ae..c653ebb6a80c 100644
--- a/Documentation/gitk.txt
+++ b/Documentation/gitk.txt
@@ -105,8 +105,12 @@ linkgit:git-rev-list[1] for a complete list.
 	(or the function name regex <funcname>) within the <file>.  You may
 	not give any pathspec limiters.  This is currently limited to
 	a walk starting from a single revision, i.e., you may only
-	give zero or one positive revision arguments.
-	You can specify this option more than once.
+	give zero or one positive revision arguments, and
+	<start> and <end> (or <funcname>) must exist in the starting revision.
+	You can specify this option more than once. Implies `--patch`.
+	Patch output can be suppressed using `--no-patch`, but other diff formats
+	(namely `--raw`, `--numstat`, `--shortstat`, `--dirstat`, `--summary`,
+	`--name-only`, `--name-status`, `--check`) are not currently implemented.
 +
 *Note:* gitk (unlike linkgit:git-log[1]) currently only understands
 this option if you specify it "glued together" with its argument.  Do