config: Keep inner whitespace verbatim

Configuration values are expected to be quoted when they have leading or
trailing whitespace, but inner whitespace should be kept verbatim even if
the value is not quoted. This is already documented in git-config(1), but
the code caused inner whitespace to be collapsed to a single space,
breaking, for example, clones from a path that has two consecutive spaces
in it, as future fetches would only see a single space.

Reported-by: John te Bokkel <tanj.tanj@gmail.com>
Signed-off-by: Björn Steinbrink <B.Steinbrink@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

2 files changed, 9 insertions, 6 deletions

diff --git a/config.c b/config.c
index 1682273c1..7e5594b65 100644
--- a/config.c
+++ b/config.c
@@ -62,7 +62,8 @@ static char *parse_value(void)
 		if (comment)
 			continue;
 		if (isspace(c) && !quote) {
-			space = 1;
+			if (len)
+				space++;
 			continue;
 		}
 		if (!quote) {
@@ -71,11 +72,8 @@ static char *parse_value(void)
 				continue;
 			}
 		}
-		if (space) {
-			if (len)
-				value[len++] = ' ';
-			space = 0;
-		}
+		for (; space; space--)
+			value[len++] = ' ';
 		if (c == '\\') {
 			c = get_next_char();
 			switch (c) {
diff --git a/t/t1300-repo-config.sh b/t/t1300-repo-config.sh
index 43ea28324..91cbd551d 100755
--- a/t/t1300-repo-config.sh
+++ b/t/t1300-repo-config.sh
@@ -733,6 +733,11 @@ echo >>result
 
 test_expect_success '--null --get-regexp' 'cmp result expect'
 
+test_expect_success 'inner whitespace kept verbatim' '
+	git config section.val "foo 	  bar" &&
+	test "z$(git config section.val)" = "zfoo 	  bar"
+'
+
 test_expect_success SYMLINKS 'symlinked configuration' '
 
 	ln -s notyet myconfig &&