Improve and simplify reference link normalization.

We now use the built in str.toLowerCase().toUpperCase(), which
@rlidwka has shown does an accurate unicode case fold.
This allows us to remove a huge lookup table and should
both decrease the size of the library and speed things up.

Closes #168.

Author: jgm

LICENSE

@@ -27,32 +27,6 @@ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 ---
 
-lib/normalize-reference.js is a slightly modified version of
-https://github.com/dmoscrop/fold-case:
-
-Copyright Mathias Bynens <https://mathiasbynens.be/>
-
-Permission is hereby granted, free of charge, to any person obtaining
-a copy of this software and associated documentation files (the
-"Software"), to deal in the Software without restriction, including
-without limitation the rights to use, copy, modify, merge, publish,
-distribute, sublicense, and/or sell copies of the Software, and to
-permit persons to whom the Software is furnished to do so, subject to
-the following conditions:
-
-The above copyright notice and this permission notice shall be
-included in all copies or substantial portions of the Software.
-
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
-EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
-MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
-NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
-LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
-OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
-WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
-
----
-
 lib/from-code-point.js is derived from a polyfill
 Copyright Mathias Bynens <http://mathiasbynens.be/>
 

dingus/Makefile

@@ -1,6 +1,6 @@
 ALL=commonmark.js
 COMPONENTS=lodash.min.js jquery.min.js jquery.min.map bootstrap.min.js bootstrap.min.css
-LIBFILES=../lib/blocks.js ../lib/common.js ../lib/from-code-point.js ../lib/inlines.js ../lib/index.js ../lib/node.js ../lib/normalize-reference.js ../lib/render/xml.js ../lib/render/html.js ../lib/render/renderer.js
+LIBFILES=../lib/blocks.js ../lib/common.js ../lib/from-code-point.js ../lib/inlines.js ../lib/index.js ../lib/node.js ../lib/render/xml.js ../lib/render/html.js ../lib/render/renderer.js
 BOWER=../node_modules/.bin/bower
 BROWSERIFY=../node_modules/.bin/browserify
 HTTPSERVER=../node_modules/.bin/http-server

lib/inlines.js

@@ -2,7 +2,6 @@
 
 var Node = require('./node');
 var common = require('./common');
-var normalizeReference = require('./normalize-reference');
 
 var normalizeURI = common.normalizeURI;
 var unescapeString = common.unescapeString;
@@ -86,6 +85,14 @@ var text = function(s) {
     return node;
 };
 
+// normalize a reference in reference link (remove []s, trim,
+// collapse internal space, unicode case fold.
+// See commonmark/commonmark.js#168.
+var normalizeReference =
+  function(string) {
+    return string.slice(1, string.length - 1).trim().replace(/[ \t\r\n]+/,' ').toLowerCase().toUpperCase();
+  }
+
 // INLINE PARSER
 
 // These are methods of an InlineParser object, defined below.