link to my post "proposal for extending smudge/clean filters with raw file access"

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Joey Hess 2016-05-12 14:26:58 -04:00
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@ -20,9 +20,19 @@ git-annex should use smudge/clean filters.
Upgrading a direct mode repo also leaves files in this state.
User can use `git add` to clear it up, but better to avoid this,
by updating stat info in the index.
(May need to use libgit2 to do this efficiently, cannot find
May need to use libgit2 to do this efficiently, cannot find
any plumbing except git-update-index, which is very inneficient for
smudged files.)
smudged files; updating a file feeds its whole content through the clean
filter again.
Part of the problem is that the clean filter needs to consume the whole
of stdin. (And git has to write the whole file content to stdout from the
file it mmaps). A more efficient smudge/clean interface that let the filter
read the file itself would let git-annex short-circuit when the file it's
cleaning is one it already knows about. I've proposed extending git with
such an interface:
<http://news.gmane.org/find-root.php?message_id=20160512182432.GA27427%40kitenet.net>
* Checking out a different branch causes git to smudge all changed files,
and write their content. This does not honor annex.thin. A warning