From f6ce1f25885f3db71935b201c5e3c858eb993f5c Mon Sep 17 00:00:00 2001
From: Jonathan Nieder <jrnieder@gmail.com>
Date: Sun, 31 Oct 2010 14:59:33 -0500
Subject: [PATCH] cherry-pick/revert: transparently refresh index
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>
---
builtin/revert.c | 18 ++++++++++++++++--
t/t3501-revert-cherry-pick.sh | 10 ++++++++++
2 files changed, 26 insertions(+), 2 deletions(-)
diff --git a/builtin/revert.c b/builtin/revert.c
index 4b47ace36b5..d849f40fcc1 100644
--- a/builtin/revert.c
+++ b/builtin/revert.c
@@ -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);
diff --git a/t/t3501-revert-cherry-pick.sh b/t/t3501-revert-cherry-pick.sh
index bc7aedd0484..043954422c8 100755
--- a/t/t3501-revert-cherry-pick.sh
+++ b/t/t3501-revert-cherry-pick.sh
@@ -81,6 +81,16 @@ test_expect_success 'revert after renaming branch' '
'
+test_expect_success 'cherry-pick on stat-dirty working tree' '
+ git clone . copy &&
+ (
+ cd copy &&
+ git checkout initial &&
+ test-chmtime +40 oops &&
+ git cherry-pick added
+ )
+'
+
test_expect_success 'revert forbidden on dirty working tree' '
echo content >extra_file &&