[PATCH v5] pull: allow dirty tree when rebase.autostash enabled

[Paul Tan <pyokagan@gmail.com>]

On Mon, Jul 06, 2015 at 01:39:47PM -0700, Junio C Hamano wrote:
> Kevin Daudt <me@ikke.info> writes:
> 
> > rebase learned to stash changes when it encounters a dirty work tree, but
> > git pull --rebase does not.
> >
> > Only verify if the working tree is dirty when rebase.autostash is not
> > enabled.
> >
> > Signed-off-by: Kevin Daudt <me@ikke.info>
> > Helped-by: Paul Tan <pyokagan@gmail.com>
> > ---
> 
> I applied it, tried to run today's integration cycle, and then ended
> up ejecting it from my tree for now, as this seemed to break 5520
> when merged to 'pu' X-<.
> 
> Well, that is partly expected, as Paul's builtin/pull.c does not
> know about it (yet).

Yeah, sorry about that.

Here's a modified patch for the C code.

Regards,
Paul

--- >8 ---
From: Kevin Daudt <me@ikke.info>
Date: Sat, 4 Jul 2015 23:42:38 +0200

rebase learned to stash changes when it encounters a dirty work tree,
but git pull --rebase does not.

Only verify if the working tree is dirty when rebase.autostash is not
enabled.

Signed-off-by: Kevin Daudt <me@ikke.info>
Signed-off-by: Paul Tan <pyokagan@gmail.com>
---
 builtin/pull.c  |  6 +++++-
 t/t5520-pull.sh | 11 +++++++++++
 2 files changed, 16 insertions(+), 1 deletion(-)

diff --git a/builtin/pull.c b/builtin/pull.c
index 722a83c..b7bc1ff 100644
--- a/builtin/pull.c
+++ b/builtin/pull.c
@@ -823,10 +823,14 @@ int cmd_pull(int argc, const char **argv, const char *prefix)
 		hashclr(orig_head);
 
 	if (opt_rebase) {
+		int autostash = 0;
+
 		if (is_null_sha1(orig_head) && !is_cache_unborn())
 			die(_("Updating an unborn branch with changes added to the index."));
 
-		die_on_unclean_work_tree(prefix);
+		git_config_get_bool("rebase.autostash", &autostash);
+		if (!autostash)
+			die_on_unclean_work_tree(prefix);
 
 		if (get_rebase_fork_point(rebase_fork_point, repo, *refspecs))
 			hashclr(rebase_fork_point);
diff --git a/t/t5520-pull.sh b/t/t5520-pull.sh
index f4a7193..a0013ee 100755
--- a/t/t5520-pull.sh
+++ b/t/t5520-pull.sh
@@ -245,6 +245,17 @@ test_expect_success '--rebase fails with multiple branches' '
 	test modified = "$(git show HEAD:file)"
 '
 
+test_expect_success 'pull --rebase succeeds with dirty working directory and rebase.autostash set' '
+	test_config rebase.autostash true &&
+	git reset --hard before-rebase &&
+	echo dirty >new_file &&
+	git add new_file &&
+	git pull --rebase . copy &&
+	test_cmp_rev HEAD^ copy &&
+	test "$(cat new_file)" = dirty &&
+	test "$(cat file)" = "modified again"
+'
+
 test_expect_success 'pull.rebase' '
 	git reset --hard before-rebase &&
 	test_config pull.rebase true &&
-- 
2.5.0.rc1.21.gbd65f2d.dirty