Get rid of the |_startRule| property in generated parsers.

lib/compiler.js

@@ -884,8 +884,6 @@ PEG.Compiler = {
       "  /* Generated by PEG.js (http://pegjs.majda.cz/). */",
       "  ",
       "  var result = {",
-      "    _startRule: ${startRule|string},",
-      "    ",
       /* This needs to be in sync with PEG.StringUtils.quote. */
       "    _quoteString: function(s) {",
       "      /*",
@@ -1016,7 +1014,7 @@ PEG.Compiler = {
       "        reportMatchFailures: true",
       "      };",
       "      ",
-      "      var result = this['_parse_' + this._startRule](initialContext);",
+      "      var result = this._parse_${startRule}(initialContext);",
       "      ",
       "      /*",
       "       * The parser is now in one of the following three states:",

lib/metagrammar.js

@@ -2,8 +2,6 @@ PEG.grammarParser = (function(){
   /* Generated by PEG.js (http://pegjs.majda.cz/). */
   
   var result = {
-    _startRule: "grammar",
-    
     _quoteString: function(s) {
       /*
        * ECMA-262, 5th ed., 7.8.4: All characters may appear literally in a string
@@ -3515,7 +3513,7 @@ PEG.grammarParser = (function(){
         reportMatchFailures: true
       };
       
-      var result = this['_parse_' + this._startRule](initialContext);
+      var result = this._parse_grammar(initialContext);
       
       /*
        * The parser is now in one of the following three states: