[PATCH 1/2] config: be strict on core.commentChar

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We don't support comment _strings_ (at least not yet). And multi-byte
character encoding could also be misinterpreted.

The test with two commas is deleted because it violates this. It's
added with the patch that introduces core.commentChar in eff80a9
(Allow custom "comment char" - 2013-01-16). It's not clear to me _why_
that behavior is wanted.

Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@xxxxxxxxx>
---
 config.c          | 8 ++++++--
 t/t7508-status.sh | 6 ------
 2 files changed, 6 insertions(+), 8 deletions(-)

diff --git a/config.c b/config.c
index a30cb5c..05d909b 100644
--- a/config.c
+++ b/config.c
@@ -826,8 +826,12 @@ static int git_default_core_config(const char *var, const char *value)
 	if (!strcmp(var, "core.commentchar")) {
 		const char *comment;
 		int ret = git_config_string(&comment, var, value);
-		if (!ret)
-			comment_line_char = comment[0];
+		if (!ret) {
+			if (comment[0] && !comment[1])
+				comment_line_char = comment[0];
+			else
+				return error("core.commentChar should only be one character");
+		}
 		return ret;
 	}
 
diff --git a/t/t7508-status.sh b/t/t7508-status.sh
index c987b5e..98a9990 100755
--- a/t/t7508-status.sh
+++ b/t/t7508-status.sh
@@ -1348,12 +1348,6 @@ test_expect_success "status (core.commentchar with submodule summary)" '
 	test_i18ncmp expect output
 '
 
-test_expect_success "status (core.commentchar with two chars with submodule summary)" '
-	test_config core.commentchar ";;" &&
-	git -c status.displayCommentPrefix=true status >output &&
-	test_i18ncmp expect output
-'
-
 test_expect_success "--ignore-submodules=all suppresses submodule summary" '
 	cat > expect << EOF &&
 On branch master
-- 
1.9.1.346.ga2b5940

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