diff.c: rewrite emit_line_0 more understandably

diff --git a/t/t3034-merge-recursive-rename-options.sh b/t/t3034-merge-recursive-rename-options.sh
index b9c4028496f97bc9a620df89768e07c6a99bb07d..3d9fae68c41c85b4393e618cfe3706212d5c2dce 100755 (executable)
--- a/t/t3034-merge-recursive-rename-options.sh
+++ b/t/t3034-merge-recursive-rename-options.sh
@@ -309,4 +309,22 @@ test_expect_success 'last wins in --find-renames=<m> --rename-threshold=<n>' '
        check_threshold_0
 '
 
+test_expect_success 'merge.renames disables rename detection' '
+       git read-tree --reset -u HEAD &&
+       git -c merge.renames=false merge-recursive $tail &&
+       check_no_renames
+'
+
+test_expect_success 'merge.renames defaults to diff.renames' '
+       git read-tree --reset -u HEAD &&
+       git -c diff.renames=false merge-recursive $tail &&
+       check_no_renames
+'
+
+test_expect_success 'merge.renames overrides diff.renames' '
+       git read-tree --reset -u HEAD &&
+       test_must_fail git -c diff.renames=false -c merge.renames=true merge-recursive $tail &&
+       $check_50
+'
+
 test_done