signature: extend trimming to more whitespace

There are all sorts of misconfiguration in the wild. We already rely
on the signature constructor to trim SP. Extend the logic to use
`isspace` to decide whether a character should be trimmed.

1 files changed, 2 insertions, 2 deletions

diff --git a/src/signature.c b/src/signature.c
index cd6167fb4..e338f0802 100644
--- a/src/signature.c
+++ b/src/signature.c
@@ -35,11 +35,11 @@ static bool contains_angle_brackets(const char *input)
 
 static char *extract_trimmed(const char *ptr, size_t len)
 {
-	while (len && ptr[0] == ' ') {
+	while (len && git__isspace(ptr[0])) {
 		ptr++; len--;
 	}
 
-	while (len && ptr[len - 1] == ' ') {
+	while (len && git__isspace(ptr[len - 1])) {
 		len--;
 	}