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-rw-r--r--Documentation/diff-format.txt2
1 files changed, 1 insertions, 1 deletions
diff --git a/Documentation/diff-format.txt b/Documentation/diff-format.txt
index b426a14f5e..97756ec030 100644
--- a/Documentation/diff-format.txt
+++ b/Documentation/diff-format.txt
@@ -81,7 +81,7 @@ The "diff" formatting options can be customized via the
environment variable 'GIT_DIFF_OPTS'. For example, if you
prefer context diff:
- GIT_DIFF_OPTS=-c git-diff-index -p $(cat .git/HEAD)
+ GIT_DIFF_OPTS=-c git-diff-index -p HEAD
2. When the environment variable 'GIT_EXTERNAL_DIFF' is set, the