1 files changed, 11 insertions, 0 deletions
diff --git a/url.c b/url.c
index 282b12495a..0fb1859b28 100644
--- a/url.c
+++ b/url.c
@@ -3,6 +3,17 @@
 #include "strbuf.h"
 #include "url.h"
 
+/*
+ * The set of unreserved characters as per STD66 (RFC3986) is
+ * '[A-Za-z0-9-._~]'. These characters are safe to appear in URI
+ * components without percent-encoding.
+ */
+int is_rfc3986_unreserved(char ch)
+{
+	return isalnum(ch) ||
+		ch == '-' || ch == '_' || ch == '.' || ch == '~';
+}
+
 int is_urlschemechar(int first_flag, int ch)
 {
 	/*