signature: Strip crud just like Git does

1 files changed, 16 insertions, 2 deletions

diff --git a/src/signature.c b/src/signature.c
index 818cd300e..109476efe 100644
--- a/src/signature.c
+++ b/src/signature.c
@@ -34,13 +34,27 @@ static bool contains_angle_brackets(const char *input)
 	return strchr(input, '<') != NULL || strchr(input, '>') != NULL;
 }
 
+static bool is_crud(unsigned char c)
+{
+	return  c <= 32  ||
+		c == '.' ||
+		c == ',' ||
+		c == ':' ||
+		c == ';' ||
+		c == '<' ||
+		c == '>' ||
+		c == '"' ||
+		c == '\\' ||
+		c == '\'';
+}
+
 static char *extract_trimmed(const char *ptr, size_t len)
 {
-	while (len && git__isspace(ptr[0])) {
+	while (len && is_crud((unsigned char)ptr[0])) {
 		ptr++; len--;
 	}
 
-	while (len && git__isspace(ptr[len - 1])) {
+	while (len && is_crud((unsigned char)ptr[len - 1])) {
 		len--;
 	}