[RFC PATCH 25/35] pull: show warning with --ff options

[Felipe Contreras <felipe.contreras@gmail.com>]

We want the user to specify either --merge or --rebase, if she doesn't
we throw a warning.

Using --ff, --no-ff, or --ff-only does not make the merge explicit.

For example, if the user has the following configuration:

  git config pull.rebase true
  git pull --no-ff

A merge is not implied.

We should be consistent and either imply a merge--in which case a
previous "pull.rebase=true" configuration is overridden--or don't--in
which case the warning should be thrown.

Signed-off-by: Felipe Contreras <felipe.contreras@gmail.com>
---
 builtin/pull.c               |  2 +-
 t/t7601-merge-pull-config.sh | 12 ++++++------
 2 files changed, 7 insertions(+), 7 deletions(-)

diff --git a/builtin/pull.c b/builtin/pull.c
index 61af8ea2cb..2c2f0822d5 100644
--- a/builtin/pull.c
+++ b/builtin/pull.c
@@ -1042,7 +1042,7 @@ int cmd_pull(int argc, const char **argv, const char *prefix)
 
 	can_ff = get_can_ff(&orig_head, &merge_heads.oid[0]);
 
-	if (!opt_rebase && !opt_ff && !can_ff) {
+	if (!opt_rebase && !can_ff) {
 		if (opt_verbosity >= 0)
 			show_advice_pull_non_ff();
 	}
diff --git a/t/t7601-merge-pull-config.sh b/t/t7601-merge-pull-config.sh
index 6d03e0b9fe..7c4607191a 100755
--- a/t/t7601-merge-pull-config.sh
+++ b/t/t7601-merge-pull-config.sh
@@ -96,21 +96,21 @@ test_expect_success 'pull.rebase not set and pull.ff=true (not-fast-forward)' '
 	git reset --hard c2 &&
 	test_config pull.ff true &&
 	git pull . c1 2>err &&
-	test_i18ngrep ! "Pulling without specifying how to reconcile" err
+	test_i18ngrep "Pulling without specifying how to reconcile" err
 '
 
 test_expect_success 'pull.rebase not set and pull.ff=false (not-fast-forward)' '
 	git reset --hard c2 &&
 	test_config pull.ff false &&
 	git pull . c1 2>err &&
-	test_i18ngrep ! "Pulling without specifying how to reconcile" err
+	test_i18ngrep "Pulling without specifying how to reconcile" err
 '
 
 test_expect_success 'pull.rebase not set and pull.ff=only (not-fast-forward)' '
 	git reset --hard c2 &&
 	test_config pull.ff only &&
 	test_must_fail git pull . c1 2>err &&
-	test_i18ngrep ! "Pulling without specifying how to reconcile" err
+	test_i18ngrep "Pulling without specifying how to reconcile" err
 '
 
 test_expect_success 'pull.rebase not set and --rebase given (not-fast-forward)' '
@@ -128,19 +128,19 @@ test_expect_success 'pull.rebase not set and --merge given (not-fast-forward)' '
 test_expect_success 'pull.rebase not set and --ff given (not-fast-forward)' '
 	git reset --hard c2 &&
 	git pull --ff . c1 2>err &&
-	test_i18ngrep ! "Pulling without specifying how to reconcile" err
+	test_i18ngrep "Pulling without specifying how to reconcile" err
 '
 
 test_expect_success 'pull.rebase not set and --no-ff given (not-fast-forward)' '
 	git reset --hard c2 &&
 	git pull --no-ff . c1 2>err &&
-	test_i18ngrep ! "Pulling without specifying how to reconcile" err
+	test_i18ngrep "Pulling without specifying how to reconcile" err
 '
 
 test_expect_success 'pull.rebase not set and --ff-only given (not-fast-forward)' '
 	git reset --hard c2 &&
 	test_must_fail git pull --ff-only . c1 2>err &&
-	test_i18ngrep ! "Pulling without specifying how to reconcile" err
+	test_i18ngrep "Pulling without specifying how to reconcile" err
 '
 
 test_expect_success 'merge c1 with c2' '
-- 
2.32.0.36.g70aac2b1aa