Documentation/config: add splitIndex.sharedIndexExpire

Signed-off-by: Christian Couder <chriscool@tuxfamily.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

diff --git a/Documentation/config.txt b/Documentation/config.txt
index 721a2afe91e1de4d56ee443644e0ef626d8abc95..5f5a92f7cfc3ba3592baabf0c58ff4445793a088 100644 (file)
--- a/Documentation/config.txt
+++ b/Documentation/config.txt
@@ -2786,6 +2786,18 @@ splitIndex.maxPercentChange::
        than 20 percent of the total number of entries.
        See linkgit:git-update-index[1].
 
+splitIndex.sharedIndexExpire::
+       When the split index feature is used, shared index files that
+       were not modified since the time this variable specifies will
+       be removed when a new shared index file is created. The value
+       "now" expires all entries immediately, and "never" suppresses
+       expiration altogether.
+       The default value is "2.weeks.ago".
+       Note that a shared index file is considered modified (for the
+       purpose of expiration) each time a new split-index file is
+       created based on it.
+       See linkgit:git-update-index[1].
+
 status.relativePaths::
        By default, linkgit:git-status[1] shows paths relative to the
        current directory. Setting this variable to `false` shows paths