[PATCH] config: Fix --unset for continuation lines

[Frank Lichtenheld <frank@lichtenheld.de>]

find_beginning_of_line didn't take into account that the
previous line might have ended with \ in which case it shouldn't
stop but continue its search.

Signed-off-by: Frank Lichtenheld <frank@lichtenheld.de>
---
 config.c               |    5 +++++
 t/t1300-repo-config.sh |   19 +++++++++++++++++++
 2 files changed, 24 insertions(+), 0 deletions(-)

 My usual "I can't code C" disclaimer applies

diff --git a/config.c b/config.c
index 498259e..1649aae 100644
--- a/config.c
+++ b/config.c
@@ -701,12 +701,17 @@ static ssize_t find_beginning_of_line(const char* contents, size_t size,
 	size_t equal_offset = size, bracket_offset = size;
 	ssize_t offset;
 
+contline:
 	for (offset = offset_-2; offset > 0
 			&& contents[offset] != '\n'; offset--)
 		switch (contents[offset]) {
 			case '=': equal_offset = offset; break;
 			case ']': bracket_offset = offset; break;
 		}
+	if (offset > 0 && contents[offset-1] == '\\') {
+		offset_ = offset;
+		goto contline;
+	}
 	if (bracket_offset < equal_offset) {
 		*found_bracket = 1;
 		offset = bracket_offset+1;
diff --git a/t/t1300-repo-config.sh b/t/t1300-repo-config.sh
index 66aeb88..5f7c3a5 100755
--- a/t/t1300-repo-config.sh
+++ b/t/t1300-repo-config.sh
@@ -72,6 +72,25 @@ EOF
 test_expect_success 'non-match result' 'cmp .git/config expect'
 
 cat > .git/config << EOF
+[alpha]
+bar = foo
+[beta]
+baz = multiple \\
+lines
+EOF
+
+test_expect_success 'unset with cont. lines' \
+	'git config --unset beta.baz'
+
+cat > expect << EOF
+[alpha]
+bar = foo
+[beta]
+EOF
+
+test_expect_success 'unset with cont. lines is correct' 'cmp .git/config expect'
+
+cat > .git/config << EOF
 [beta] ; silly comment # another comment
 noIndent= sillyValue ; 'nother silly comment
 
-- 
1.5.4