From e2be2d7d27b3625aae9f8605d8f5210ee4cae21e Mon Sep 17 00:00:00 2001
From: Julien Bisconti <veggiemonk@users.noreply.github.com>
Date: Fri, 30 Dec 2016 16:53:13 +0200
Subject: [PATCH] add option: headerRegex

---
 src/subParsers/headers.js | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/subParsers/headers.js b/src/subParsers/headers.js
index a6018f5..8dd52e8 100644
--- a/src/subParsers/headers.js
+++ b/src/subParsers/headers.js
@@ -52,7 +52,8 @@ showdown.subParser('headers', function (text, options, globals) {
   });
 
   function headerId(m) {
-    var title, escapedId = m.replace(/[^\w]/g, '').toLowerCase();
+    var regex = option.headerRegex || /[^\w]/g;
+    var title, escapedId = m.replace(regex, '').toLowerCase();
 
     if (globals.hashLinkCounts[escapedId]) {
       title = escapedId + '-' + (globals.hashLinkCounts[escapedId]++);