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-rw-r--r--Documentation/git-update-index.txt8
1 files changed, 8 insertions, 0 deletions
diff --git a/Documentation/git-update-index.txt b/Documentation/git-update-index.txt
index aff0179..6bc2967 100644
--- a/Documentation/git-update-index.txt
+++ b/Documentation/git-update-index.txt
@@ -170,6 +170,14 @@ may not support it yet.
the shared index file. This mode is designed for very large
indexes that take a significant amount of time to read or write.
+--untracked-cache::
+--no-untracked-cache::
+ Enable or disable untracked cache extension. This could speed
+ up for commands that involve determining untracked files such
+ as `git status`. The underlying operating system and file
+ system must change `st_mtime` field of a directory if files
+ are added or deleted in that directory.
+
\--::
Do not interpret any more arguments as options.