git-gc.txt, git-reflog.txt: document new expiry options

diff --git a/Documentation/git-reflog.txt b/Documentation/git-reflog.txt
index 7fe2d2247bf4197c6212b6cab56e7f14606ff3b5..141e8a5e4338499d8a6ea48a04a31a005591669b 100644 (file)
--- a/Documentation/git-reflog.txt
+++ b/Documentation/git-reflog.txt
@@ -67,14 +67,19 @@ them.
 --expire=<time>::
        Entries older than this time are pruned.  Without the
        option it is taken from configuration `gc.reflogExpire`,
-       which in turn defaults to 90 days.
+       which in turn defaults to 90 days.  --expire=all prunes
+       entries regardless of their age; --expire=never turns off
+       pruning of reachable entries (but see --expire-unreachable).
 
 --expire-unreachable=<time>::
        Entries older than this time and not reachable from
        the current tip of the branch are pruned.  Without the
        option it is taken from configuration
        `gc.reflogExpireUnreachable`, which in turn defaults to
-       30 days.
+       30 days.  --expire-unreachable=all prunes unreachable
+       entries regardless of their age; --expire-unreachable=never
+       turns off early pruning of unreachable entries (but see
+       --expire).
 
 --all::
        Instead of listing <refs> explicitly, prune all refs.