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this.string.charAt(this.i).match(/\s/)},GetNext:function(){for(;this.nextIsSpace();)this.i++;return this.string.charAt(this.i)},GetCS:function(){var t=this.string.slice(this.i).match(/^([a-z]+|.) ?/i);return t?(this.i+=t[1].length,t[1]):(this.i++," ")},GetArgument:function(e,i){switch(this.GetNext()){case"":return i||t.Error(["MissingArgFor","Missing argument for %1",e]),null;case"}":return i||t.Error(["ExtraCloseMissingOpen","Extra close brace or missing open brace"]),null;case"\\":return this.i++,"\\"+this.GetCS();case"{":for(var s=++this.i,a=1;this.i<this.string.length;)switch(this.string.charAt(this.i++)){case"\\":this.i++;break;case"{":a++;break;case"}":if(0==--a)return this.string.slice(s,this.i-1)}t.Error(["MissingCloseBrace","Missing close brace"])}return this.string.charAt(this.i++)},GetBrackets:function(e,i){if("["!=this.GetNext())return i;for(var 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s=(i=this.string.slice(this.i)).match(/^\s*(([-+]?([.,]\d+|\d+([.,]\d*)?))\s*(pt|em|ex|mu|px|mm|cm|in|pc)) ?/);if(s)return this.i+=s[0].length,s[1].replace(/ /g,"").replace(/,/,".")}t.Error(["MissingDimOrUnits","Missing dimension or its units for %1",e])},GetUpTo:function(e,i){for(;this.nextIsSpace();)this.i++;for(var s,a,r=this.i,n=0;this.i<this.string.length;){switch(s=this.i,a=this.string.charAt(this.i++)){case"\\":a+=this.GetCS();break;case"{":n++;break;case"}":0==n&&t.Error(["ExtraCloseLooking","Extra close brace while looking for %1",i]),n--}if(0==n&&a==i)return this.string.slice(r,s)}t.Error(["TokenNotFoundForCommand","Couldn't find %1 for %2",i,e])},ParseArg:function(e){return t.Parse(this.GetArgument(e),this.stack.env).mml()},ParseUpTo:function(e,i){return t.Parse(this.GetUpTo(e,i),this.stack.env).mml()},InternalMath:function(e,i){var 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