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This module implementsTemplate:Large category TOC and similar templates. It is used on categories with many members to provide a means of indexing them by first letter and first two letters
For full lists (Template:Large category TOC):
{{#invoke:Large category TOC|aejot}}For collapsible lists (Template:Collapsible large category TOC):
{{#invoke:Large category TOC|collapsible}}localp={}localazupper=mw.text.split('ABCDEFGHIJKLMNOPQRSTUVWXYZ','')localazlower=mw.text.split('abcdefghijklmnopqrstuvwxyz','')localaejot=mw.text.split('aejot','')localfunctionmain(toc_type)localtoc_frame=mw.html.create('div'):addClass('large-cat-toc'):addClass('plainlinks'):addClass('toc')-- :attr('id','toc')-- Contains "Content: Top 0-9 A - Z"localheader=toc_frame:tag('div'):attr('class','toctitle')-- Contains all the restlocalbody_wrapperlocalbody=toc_frame:tag('div'):addClass('large-cat-toc-body')localjumpy_collapse=mw.html.create('div'):addClass('large-cat-toc-jumpy-title')iftoc_type=='collapsible'thentoc_frame:addClass('mw-collapsible mw-collapsed')body:addClass('mw-collapsible-content')elseiftoc_type=='scrollable'thentoc_frame:addClass('large-cat-toc-scroll')endlocalpageurl=mw.title.getCurrentTitle():fullUrl()localheader_content={string.format('<span class="large-cat-toc-title">%s:</span> [%s Top] [%s?from=0 0–9]',mw.message.new('Toc'):plain(),pageurl,pageurl)}for_,vinipairs(azupper)dotable.insert(header_content,string.format(' [%s?from=%s %s]',pageurl,v,v))endiftoc_type=='collapsible'thenjumpy_collapse:wikitext(table.concat(header_content))header:node(jumpy_collapse)elseheader:wikitext(table.concat(header_content))endlocalbody_content={}iftoc_type~='collapsible'thentable.insert(body_content,' <span class="large-cat-toc-anum">['..pageurl..'?from=* *]</span>')endtable.insert(body_content,' <span class="large-cat-toc-anum">#</span>')body_wrapper=body:tag('span')fori=0,9dotable.insert(body_content,string.format(' [%s?from=%s %s]',pageurl,i,i))endlocalfunctionatoz(letter)localazlist={}localletterlistiftoc_type=='aejot'thenletterlist=aejotelseletterlist=azlowerendiftoc_type=='aejot'ortoc_type=='scrollable'thentable.insert(azlist,' • <span class="large-cat-toc-anum">'..letter..'</span>')elsetable.insert(azlist,' <br /><span class="large-cat-toc-anum">'..letter..'</span>')endfori,vinipairs(letterlist)dolocallead=(i==1)and' 'or' '-- non-breaking space before the first linktable.insert(azlist,string.format('%s[%s?from=%s%s %s%s]',lead,pageurl,letter,v,letter,v))endreturntable.concat(azlist)endfor_,vinipairs(azupper)dotable.insert(body_content,atoz(v))endbody_wrapper:wikitext(table.concat(body_content))return'__NOTOC__\n'..mw.getCurrentFrame():extensionTag{name='templatestyles',args={src='Module:Large category TOC/styles.css'}}..tostring(toc_frame)endfunctionp.scrollable(frame)returnmain('scrollable')endfunctionp.collapsible(frame)returnmain('collapsible')endfunctionp.aejot(frame)returnmain('aejot')endreturnp