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cherry-pick/revert: transparently refresh index

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A stat-dirty index is not a detail that ought to concern the operator
of porcelain such as "git cherry-pick".

Without this change, a cherry-pick after copying a worktree with rsync
errors out with a misleading message.

	$ git cherry-pick build/top
	error: Your local changes to 'file.h' would be overwritten by merge.  Aborting.
	Please, commit your changes or stash them before you can merge.

Noticed-by: Pete Wyckoff <pw@padd.com>
Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Jonathan Nieder
2010-10-31 14:59:33 -05:00
committed by Junio C Hamano
parent af77aee9ca
commit f6ce1f2588
2 changed files with 26 additions and 2 deletions
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18
builtin/revert.c
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@ -547,6 +547,21 @@ static void prepare_revs(struct rev_info *revs)
die("empty commit set passed");
}
static void read_and_refresh_cache(const char *me)
{
static struct lock_file index_lock;
int index_fd = hold_locked_index(&index_lock, 0);
if (read_index_preload(&the_index, NULL) < 0)
die("git %s: failed to read the index", me);
refresh_index(&the_index, REFRESH_QUIET|REFRESH_UNMERGED, NULL, NULL, NULL);
if (the_index.cache_changed) {
if (write_index(&the_index, index_fd) ||
commit_locked_index(&index_lock))
die("git %s: failed to refresh the index", me);
}
rollback_lock_file(&index_lock);
}
static int revert_or_cherry_pick(int argc, const char **argv)
{
struct rev_info revs;
@ -567,8 +582,7 @@ static int revert_or_cherry_pick(int argc, const char **argv)
die("cherry-pick --ff cannot be used with --edit");
}
if (read_cache() < 0)
die("git %s: failed to read the index", me);
read_and_refresh_cache(me);
prepare_revs(&revs);