Jakub Narebski <jnareb@xxxxxxxxx> writes:
> By the way, from time to time there on this mailing list is idea
> to add entries for directories in the index. This could help situation
> like yours, tracking emty directories, faster operations when some trees
> are unchanged, subtree <-> subproject changes.
Tracking empty directories might be helped by having an explicit entry in
the index (even though it may not be the only possible implementation). I
however suspect you are overvaluing it for "some trees are unchanged"
case:
$ mkdir -p a/b
$ stat a | grep Modify
Modify: 2008-06-27 11:38:13.000000000 -0700
$ >a/b/c
$ stat a | grep Modify
Modify: 2008-06-27 11:38:13.000000000 -0700
$ >a/d
$ stat a | grep Modify
Modify: 2008-06-27 11:38:32.000000000 -0700
You have to descend into the leaf level anyway and directory mtime does
not allow you to check that much.
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