From 3c2736bb2a3eb594d8c54f912adbcf7828f88ec2 Mon Sep 17 00:00:00 2001
From: Yuji Hirose <yhirose@bethel.jw.org>
Date: Tue, 10 Dec 2019 13:07:49 -0500
Subject: [PATCH] Fixed regex syntax error

---
 httplib.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/httplib.h b/httplib.h
index de929e4..dfdc8d3 100644
--- a/httplib.h
+++ b/httplib.h
@@ -2425,7 +2425,7 @@ inline std::pair<std::string, std::string> make_digest_authentication_header(
 inline int parse_www_authenticate(const httplib::Response &res,
                             std::map<std::string, std::string> &digest_auth) {
   if (res.has_header("WWW-Authenticate")) {
-    static auto re = std::regex(R"~((?:(?:,\s*)?(.+?)=(?:"(.*?)"|([^,]*)))))~");
+    static auto re = std::regex(R"~((?:(?:,\s*)?(.+?)=(?:"(.*?)"|([^,]*))))~");
     auto s = res.get_header_value("WWW-Authenticate");
     auto pos = s.find(' ');
     if (pos != std::string::npos) {