morebits: Ignore file/category embeds when removing links (wikimedia-…

…gadgets#239)

File: and Category: links (without a leading colon) should not be
removed. Fixes wikimedia-gadgets#231.

morebits.js

@@ -3024,8 +3024,14 @@ Morebits.wikitext.page.prototype = {
 	removeLink: function( link_target ) {
 		var first_char = link_target.substr( 0, 1 );
 		var link_re_string = "[" + first_char.toUpperCase() + first_char.toLowerCase() + ']' + RegExp.escape( link_target.substr( 1 ), true );
-		var link_simple_re = new RegExp( "\\[\\[:?(" + link_re_string + ")\\]\\]", 'g' );
-		var link_named_re = new RegExp( "\\[\\[:?" + link_re_string + "\\|(.+?)\\]\\]", 'g' );
+
+		// Files and Categories become links with a leading colon.
+		// e.g. [[:File:Test.png]]
+		var special_ns_re = /^(?:[Ff]ile|[Ii]mage|[Cc]ategory):/;
+		var colon = special_ns_re.test( link_target ) ? ':' : '';
+
+		var link_simple_re = new RegExp( "\\[\\[" + colon + "(" + link_re_string + ")\\]\\]", 'g' );
+		var link_named_re = new RegExp( "\\[\\[" + colon + link_re_string + "\\|(.+?)\\]\\]", 'g' );
 		this.text = this.text.replace( link_simple_re, "$1" ).replace( link_named_re, "$1" );
 	},
 	commentOutImage: function( image, reason ) {