Makefile: add a knob to enable the use of Asciidoctor

diff --git a/t/t7501-commit.sh b/t/t7501-commit.sh
index 363abb187e51d60e78f7fe607549873a2dd87aba..0d8d893090e18af677b8c63b19c30c574b237ac9 100755 (executable)
--- a/t/t7501-commit.sh
+++ b/t/t7501-commit.sh
@@ -155,6 +155,15 @@ test_expect_success 'amend --only ignores staged contents' '
        git diff --exit-code
 '
 
+test_expect_success 'allow-empty --only ignores staged contents' '
+       echo changed-again >file &&
+       git add file &&
+       git commit --allow-empty --only -m "empty" &&
+       git cat-file blob HEAD:file >file.actual &&
+       test_cmp file.expect file.actual &&
+       git diff --exit-code
+'
+
 test_expect_success 'set up editor' '
        cat >editor <<-\EOF &&
        #!/bin/sh
@@ -200,6 +209,26 @@ test_expect_success '--amend --edit of empty message' '
        test_cmp expect msg
 '
 
+test_expect_success '--amend to set message to empty' '
+       echo bata >file &&
+       git add file &&
+       git commit -m "unamended" &&
+       git commit --amend --allow-empty-message -m "" &&
+       git diff-tree -s --format=%s HEAD >msg &&
+       echo "" >expect &&
+       test_cmp expect msg
+'
+
+test_expect_success '--amend to set empty message needs --allow-empty-message' '
+       echo conga >file &&
+       git add file &&
+       git commit -m "unamended" &&
+       test_must_fail git commit --amend -m "" &&
+       git diff-tree -s --format=%s HEAD >msg &&
+       echo "unamended" >expect &&
+       test_cmp expect msg
+'
+
 test_expect_success '-m --edit' '
        echo amended >expect &&
        git commit --allow-empty -m buffer &&