start_command: detect execvp failures early

diff --git a/t/t6006-rev-list-format.sh b/t/t6006-rev-list-format.sh
index 7f61ab0e522fd28c5e10594f03ed9076f9f5ce42..571931588eda5799efbf2b0789abd10b8770a0a7 100755 (executable)
--- a/t/t6006-rev-list-format.sh
+++ b/t/t6006-rev-list-format.sh
@@ -162,6 +162,28 @@ test_expect_success 'empty email' '
        }
 '
 
+test_expect_success 'del LF before empty (1)' '
+       git show -s --pretty=format:"%s%n%-b%nThanks%n" HEAD^^ >actual &&
+       test $(wc -l <actual) = 2
+'
+
+test_expect_success 'del LF before empty (2)' '
+       git show -s --pretty=format:"%s%n%-b%nThanks%n" HEAD >actual &&
+       test $(wc -l <actual) = 6 &&
+       grep "^$" actual
+'
+
+test_expect_success 'add LF before non-empty (1)' '
+       git show -s --pretty=format:"%s%+b%nThanks%n" HEAD^^ >actual &&
+       test $(wc -l <actual) = 2
+'
+
+test_expect_success 'add LF before non-empty (2)' '
+       git show -s --pretty=format:"%s%+b%nThanks%n" HEAD >actual &&
+       test $(wc -l <actual) = 6 &&
+       grep "^$" actual
+'
+
 test_expect_success '"%h %gD: %gs" is same as git-reflog' '
        git reflog >expect &&
        git log -g --format="%h %gD: %gs" >actual &&