[PATCH v3] pull: allow dirty tree when rebase.autostash enabled

[Kevin Daudt <me@ikke.info>]

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>
---
Changes to v2:
 - Dropped the change of the existing --rebase test
 - Improvements to the test.

Verified that the test fails before the change, and succeeds after the change.

 git-pull.sh     |  5 ++++-
 t/t5520-pull.sh | 11 +++++++++++
 2 files changed, 15 insertions(+), 1 deletion(-)

diff --git a/git-pull.sh b/git-pull.sh
index 0917d0d..f0a3b6e 100755
--- a/git-pull.sh
+++ b/git-pull.sh
@@ -239,7 +239,10 @@ test true = "$rebase" && {
 			die "$(gettext "updating an unborn branch with changes added to the index")"
 		fi
 	else
-		require_clean_work_tree "pull with rebase" "Please commit or stash them."
+		if [ $(git config --bool --get rebase.autostash || echo false) = false ]
+		then
+			require_clean_work_tree "pull with rebase" "Please commit or stash them."
+		fi
 	fi
 	oldremoteref= &&
 	test -n "$curr_branch" &&
diff --git a/t/t5520-pull.sh b/t/t5520-pull.sh
index af31f04..aa247ec 100755
--- a/t/t5520-pull.sh
+++ b/t/t5520-pull.sh
@@ -233,6 +233,17 @@ 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 &&
-- 
2.4.3