From a407869dfc062d6ec24f00482aae6019e083d8c7 Mon Sep 17 00:00:00 2001
From: John MacFarlane <jgm@berkeley.edu>
Date: Mon, 8 Sep 2014 09:21:07 -0700
Subject: Fixed rewind on parseLabel.

14 test failures now, all with emphasis.  IN most of all of these
cases, the examples in the spec seem to be mistakes, given what
the spec says.

More troubling, performance is down from around 220 to 83.  This
needs investigation.
---
 js/stmd.js | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/js/stmd.js b/js/stmd.js
index 8fc7f20..7d0a532 100755
--- a/js/stmd.js
+++ b/js/stmd.js
@@ -456,7 +456,7 @@ var parseLink = function() {
 
   n = this.parseLinkLabel();
   if (n === 0) {
-    return 0;
+    return null;
   }
   var afterlabel = this.pos;
   var rawlabel = this.subject.substr(startpos, n);
@@ -479,7 +479,7 @@ var parseLink = function() {
                  label: parseRawLabel(rawlabel) };
      } else {
         this.pos = startpos;
-        return 0;
+        return null;
      }
   }
   // If we're here, it wasn't an explicit link. Try to parse a reference link.
@@ -505,6 +505,7 @@ var parseLink = function() {
             title: link.title,
             label: parseRawLabel(rawlabel) };
   } else {
+      this.pos = startpos;
       return null;
   }
   // Nothing worked, rewind:
-- 
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