update-index: do not die too early in a read-only repository.

diff --git a/Documentation/config.txt b/Documentation/config.txt
index 0129b1fd69ff4b8a82c09b5fc10fb7a999da919f..38655350f22bde08786b4a42e608ba76c1becea4 100644 (file)
--- a/Documentation/config.txt
+++ b/Documentation/config.txt
@@ -321,6 +321,17 @@ format.headers::
        Additional email headers to include in a patch to be submitted
        by mail.  See gitlink:git-format-patch[1].
 
+gc.packrefs::
+       `git gc` does not run `git pack-refs` in a bare repository by
+       default so that older dumb-transport clients can still fetch
+       from the repository.  Setting this to `true` lets `git
+       gc` to run `git pack-refs`.  Setting this to `false` tells
+       `git gc` never to run `git pack-refs`. The default setting is
+       `notbare`. Enable it only when you know you do not have to
+       support such clients.  The default setting will change to `true`
+       at some stage, and setting this to `false` will continue to
+       prevent `git pack-refs` from being run from `git gc`.
+
 gc.reflogexpire::
        `git reflog expire` removes reflog entries older than
        this time; defaults to 90 days.