var myContent = document.getElementsByName('wpTextbox1')[0];  if(mw.config.get('wgNamespaceNumber') != -1 && myContent) addOnloadHook(myscriptButton) function myscriptButton() {   mw.util.addPortletLink('p-tb','javascript:wpFindDuplicateArgs(0)', 'Find dups', 't-fdup'); }  // -------------------------------------------------------------------------------- // function wpFindDuplicateArgs(debugflag) {   // Flag used to determine if we have issued an alert popup   var alertissued=0;   // Internal for and while loop variables   var i=0; var j=0; var loopcount=0;   // Array used to hold the list of unnested templates   var tlist = [];    // Regular expression which matchs a template arg   var argexp = new RegExp("\\|[\\s]*([^\\s=\\|\\[\\]\\{\\}][^=\\|\\[\\]\\{\\}]*[^\\s=\\|\\[\\]\\{\\}]|[^\\s=\\|\\[\\]\\{\\}])[\\s]*=", "gm");      // Copy the contents of the text window so we can modify it without problems   var mytxt = myContent.value;   // Remove some includeonly, noinclude, and onlyinclude tags   mytxt = mytxt.replace(/<\/?[ ]*(?:includeonly|noinclude|onlyinclude)[ ]*>/gi, '');   // Remove PAGENAME, BASEPAGENAME, ... nested inside of triple braces   mytxt = mytxt.replace(/\{\{\{[^\{\}]*\|[ ]*\{\{[A-Z]+\}\}\}\}\}/g, '');   // Remove some triple braces   loopcount = 0;    while((mytxt.search(/\{\{\{[^\{\}]*\}\}\}/g) >= 0) && (loopcount < 5) ) {     mytxt = mytxt.replace(/\{\{\{[^\{\}]*\}\}\}/g, '');     loopcount++;   }   // Replace some bare braces with HTML equivalent   mytxt = mytxt.replace(/([^\{])\{([^\{])/g, '$1&#123;$2');   mytxt = mytxt.replace(/([^\}])\}([^\}])/g, '$1&#125;$2');   // Remove newlines and tabs which confuse the regexp search   mytxt = mytxt.replace(/[\s]/gm, ' ');   // Compress whitespace   mytxt = mytxt.replace(/[\s][\s]+/gm, ' ');   // Remove some HTML comments   mytxt = mytxt.replace(/<!--[^<>]*-->/gm, '');   // Modify some = inside of file/image/wikilinks which cause false positives   loopcount = 0;   while((mytxt.search(/\[\[[^\[\]\{\}]*=/gi) >= 0) && (loopcount < 5) ) {     mytxt = mytxt.replace(/(\[\[[^\[\]\{\}]*)=/gi, '$1&#61;');     loopcount++;   }   // Split the text into chunks to reduce processing overhead   var strlist = mytxt.split(/(\{\{|\}\})/);     // Now start unnesting the templates   loopcount = 0;   while( (strlist.length > 0) && (loopcount < 10) ) {     for (i = strlist.length - 1; i >= 0; i--) {       if((i+2) < strlist.length && strlist[i] == '{{' && strlist[i+2] == '}}') {         tlist.push(strlist[i] + strlist[i+1] + strlist[i+2]);         strlist.splice(i,3);       } else if((i+3) < strlist.length && strlist[i] == '{{' && strlist[i+3] == '}}') {         if( strlist[i+1].search(/[\{\}]/g) < 0 && strlist[i+2].search(/[\{\}]/g) < 0 ) {            tlist.push(strlist[i] + strlist[i+1] + strlist[i+2] + strlist[i+3]);            strlist.splice(i,4);         }       } else if( strlist[i].search(/^[\s]*$/g) >= 0 ) {         strlist.splice(i,1);       } else if((i+1) < strlist.length && strlist[i].search(/[\{\}]/g) < 0 && strlist[i+1].search(/[\{\}]/g) < 0) {         strlist[i] = strlist[i] + strlist[i+1];         strlist.splice(i+1,1);       }     }     loopcount++;   }   // Now find duplicates in the list of unnested templates   for(i=0; i < tlist.length; ++i) {     // Add numbers for unnamed parameters     var unp=0;     while((tlist[i].search(/(\{\{(?:[^{}\[\]]|\[\[[^\[\]]*\]\])*?\|)((?:[^{}\[\]=\|]|\[\[[^\[\]]*\]\])*(?:\||\}\}))/) >= 0)           && (unp < 25)) {       unp++;       tlist[i] = tlist[i].replace(/(\{\{(?:[^{}\[\]]|\[\[[^\[\]]*\]\])*?\|)((?:[^{}\[\]=\|]|\[\[[^\[\]]*\]\])*(?:\||\}\}))/, '$1' + unp + '=$2');     }     // Split the template into an array of | arg = ... strings     var p = tlist[i].match(argexp);     if( p ) {       for(j=0; j < p.length; ++j) {         p[j] = p[j].replace(argexp, '$1');       }       p = p.sort();       for(j=0; j < p.length - 1; ++j) {         if( p[j] == p[j+1]) {           alertissued = 1;           alert(p[j] + ' in ' + tlist[i]);         }       }     }   }     var editsummary = document.getElementsByName('wpSummary')[0];   if (alertissued && editsummary) {     editsummary.value = 'Clean up [[:Category:Pages using duplicate arguments in template calls|duplicate template arguments]]';   } }