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* Vditor v3.11.0 - A markdown editor written in TypeScript.
*
* MIT License
*
* Copyright (c) 2018-present B3log 开源, b3log.org
*
* 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.
*
*/var ai=yt.exports,Zn;function ii(){return Zn||(Zn=1,function(Ee,me){(function(E,re){Ee.exports=re()})(ai,function(){return(()=>{var ge={173:Q=>{var M=function(){this.Diff_Timeout=1,this.Diff_EditCost=4,this.Match_Threshold=.5,this.Match_Distance=1e3,this.Patch_DeleteThreshold=.5,this.Patch_Margin=4,this.Match_MaxBits=32},D=-1,R=1,N=0;M.Diff=function(d,c){return[d,c]},M.prototype.diff_main=function(d,c,_,g){typeof g=="undefined"&&(this.Diff_Timeout<=0?g=Number.MAX_VALUE:g=new Date().getTime()+this.Diff_Timeout*1e3);var y=g;if(d==null||c==null)throw new Error("Null input. (diff_main)");if(d==c)return d?[new M.Diff(N,d)]:[];typeof _=="undefined"&&(_=!0);var p=_,C=this.diff_commonPrefix(d,c),L=d.substring(0,C);d=d.substring(C),c=c.substring(C),C=this.diff_commonSuffix(d,c);var S=d.substring(d.length-C);d=d.substring(0,d.length-C),c=c.substring(0,c.length-C);var i=this.diff_compute_(d,c,p,y);return L&&i.unshift(new M.Diff(N,L)),S&&i.push(new M.Diff(N,S)),this.diff_cleanupMerge(i),i},M.prototype.diff_compute_=function(d,c,_,g){var y;if(!d)return[new M.Diff(R,c)];if(!c)return[new M.Diff(D,d)];var p=d.length>c.length?d:c,C=d.length>c.length?c:d,L=p.indexOf(C);if(L!=-1)return y=[new M.Diff(R,p.substring(0,L)),new M.Diff(N,C),new M.Diff(R,p.substring(L+C.length))],d.length>c.length&&(y[0][0]=y[2][0]=D),y;if(C.length==1)return[new M.Diff(D,d),new M.Diff(R,c)];var S=this.diff_halfMatch_(d,c);if(S){var i=S[0],s=S[1],u=S[2],f=S[3],v=S[4],b=this.diff_main(i,u,_,g),k=this.diff_main(s,f,_,g);return b.concat([new M.Diff(N,v)],k)}return _&&d.length>100&&c.length>100?this.diff_lineMode_(d,c,g):this.diff_bisect_(d,c,g)},M.prototype.diff_lineMode_=function(d,c,_){var g=this.diff_linesToChars_(d,c);d=g.chars1,c=g.chars2;var y=g.lineArray,p=this.diff_main(d,c,!1,_);this.diff_charsToLines_(p,y),this.diff_cleanupSemantic(p),p.push(new M.Diff(N,""));for(var C=0,L=0,S=0,i="",s="";C
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i="",s=0,u=-1,f=_.length;ug?d=d.substring(_-g):_c.length?d:c,g=d.length>c.length?c:d;if(_.length<4||g.length*2<_.length)return null;var y=this;function p(b,k,H){for(var j=b.substring(H,H+Math.floor(b.length/4)),x=-1,I="",z,T,B,q;(x=k.indexOf(j,x+1))!=-1;){var J=y.diff_commonPrefix(b.substring(H),k.substring(x)),se=y.diff_commonSuffix(b.substring(0,H),k.substring(0,x));I.length=b.length?[z,T,B,q,I]:null}var C=p(_,g,Math.ceil(_.length/4)),L=p(_,g,Math.ceil(_.length/2)),S;if(!C&&!L)return null;L?C?S=C[4].length>L[4].length?C:L:S=L:S=C;var i,s,u,f;d.length>c.length?(i=S[0],s=S[1],u=S[2],f=S[3]):(u=S[0],f=S[1],i=S[2],s=S[3]);var v=S[4];return[i,s,u,f,v]},M.prototype.diff_cleanupSemantic=function(d){for(var c=!1,_=[],g=0,y=null,p=0,C=0,L=0,S=0,i=0;p0?_[g-1]:-1,C=0,L=0,S=0,i=0,y=null,c=!0)),p++;for(c&&this.diff_cleanupMerge(d),this.diff_cleanupSemanticLossless(d),p=1;p=v?(f>=s.length/2||f>=u.length/2)&&(d.splice(p,0,new 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