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t=this.parseStringGroup("color",e);if(t==null)return null;var a=/^(#[a-f0-9]{3,4}|#[a-f0-9]{6}|#[a-f0-9]{8}|[a-f0-9]{6}|[a-z]+)$/i.exec(t.text);if(!a)throw new z("Invalid color: '"+t.text+"'",t);var n=a[0];return/^[0-9a-f]{6}$/i.test(n)&&(n="#"+n),{type:"color-token",mode:this.mode,color:n}}parseSizeGroup(e){var t,a=!1;if(this.gullet.consumeSpaces(),!e&&this.gullet.future().text!=="{"?t=this.parseRegexGroup(/^[-+]? *(?:$|\d+|\d+\.\d*|\.\d*) *[a-z]{0,2} *$/,"size"):t=this.parseStringGroup("size",e),!t)return null;!e&&t.text.length===0&&(t.text="0pt",a=!0);var n=/([-+]?) *(\d+(?:\.\d*)?|\.\d+) *([a-z]{2})/.exec(t.text);if(!n)throw new z("Invalid size: '"+t.text+"'",t);var l={number:+(n[1]+n[2]),unit:n[3]};if(!Er(l))throw new z("Invalid unit: '"+l.unit+"'",t);return{type:"size",mode:this.mode,value:l,isBlank:a}}parseUrlGroup(e){this.gullet.lexer.setCatcode("%",13),this.gullet.lexer.setCatcode("~",12);var t=this.parseStringGroup("url",e);if(this.gullet.lexer.setCatcode("%",14),this.gullet.lexer.setCatcode("~",13),t==null)return null;var a=t.text.replace(/\\([#$%&~_^{}])/g,"$1");return{type:"url",mode:this.mode,url:a}}parseArgumentGroup(e,t){var a=this.gullet.scanArgument(e);if(a==null)return null;var n=this.mode;t&&this.switchMode(t),this.gullet.beginGroup();var l=this.parseExpression(!1,"EOF");this.expect("EOF"),this.gullet.endGroup();var u={type:"ordgroup",mode:this.mode,loc:a.loc,body:l};return t&&this.switchMode(n),u}parseGroup(e,t){var a=this.fetch(),n=a.text,l;if(n==="{"||n==="\\begingroup"){this.consume();var u=n==="{"?"}":"\\endgroup";this.gullet.beginGroup();var h=this.parseExpression(!1,u),c=this.fetch();this.expect(u),this.gullet.endGroup(),l={type:"ordgroup",mode:this.mode,loc:c0.range(a,c),body:h,semisimple:n==="\\begingroup"||void 0}}else if(l=this.parseFunction(t,e)||this.parseSymbol(),l==null&&n[0]==="\\"&&!z1.hasOwnProperty(n)){if(this.settings.throwOnError)throw new 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