builtin/commit.c: extract ignore_non_trailer() helper function

diff --git a/t/t7600-merge.sh b/t/t7600-merge.sh
index 2f70433568e3134b09d7e1eb10cc5c8995c1a106..10aa028017833479c43bbb551741dfd36d9741aa 100755 (executable)
--- a/t/t7600-merge.sh
+++ b/t/t7600-merge.sh
@@ -316,7 +316,7 @@ test_expect_success 'merge c1 with c2 (squash)' '
 
 test_debug 'git log --graph --decorate --oneline --all'
 
-test_expect_success 'unsuccesful merge of c1 with c2 (squash, ff-only)' '
+test_expect_success 'unsuccessful merge of c1 with c2 (squash, ff-only)' '
        git reset --hard c1 &&
        test_must_fail git merge --squash --ff-only c2
 '
@@ -497,9 +497,15 @@ test_expect_success 'combining --squash and --no-ff is refused' '
        test_must_fail git merge --no-ff --squash c1
 '
 
-test_expect_success 'combining --ff-only and --no-ff is refused' '
-       test_must_fail git merge --ff-only --no-ff c1 &&
-       test_must_fail git merge --no-ff --ff-only c1
+test_expect_success 'option --ff-only overwrites --no-ff' '
+       git merge --no-ff --ff-only c1 &&
+       test_must_fail git merge --no-ff --ff-only c2
+'
+
+test_expect_success 'option --no-ff overrides merge.ff=only config' '
+       git reset --hard c0 &&
+       test_config merge.ff only &&
+       git merge --no-ff c1
 '
 
 test_expect_success 'merge c0 with c1 (ff overrides no-ff)' '