WebVTT pseudo class/element

Author: othree

autoload/csscomplete.vim

@@ -597,7 +597,7 @@ function! csscomplete#CompleteCSS(findstart, base)
       let postfix = ""
       let element = tolower(matchstr(line, '\zs[a-zA-Z1-6]*\ze:[^:[:space:]]\{-}$'))
       if stridx('a,abbr,address,area,article,aside,audio,b,base,bdi,bdo,bgsound,blockquote,body,br,button,canvas,caption,center,cite,code,col,colgroup,command,content,data,datalist,dd,del,details,dfn,dialog,div,dl,dt,element,em,embed,fieldset,figcaption,figure,font,footer,form,frame,frameset,head,header,hgroup,hr,html,i,iframe,image,img,input,ins,isindex,kbd,keygen,label,legend,li,link,main,map,mark,menu,menuitem,meta,meter,nav,nobr,noframes,noscript,object,ol,optgroup,option,output,p,param,picture,pre,progress,q,rp,rt,rtc,ruby,s,samp,script,section,select,shadow,small,source,span,strong,style,sub,summary,sup,table,tbody,td,template,textarea,tfoot,th,thead,time,title,tr,track,u,ul,var,video,wbr', ','.element.',') > -1
-        let values = ["active", "any", "any-link", "blank", "checked", "disabled", "enabled", "default", "dir(", "disabled", "drop", "drop(", "empty", "enabled", "first", "first-child", "first-of-type", "fullscreen", "focus", "focus-within", "has(", "hover", "indeterminate", "in-range", "invalid", "lang(", "last-child", "last-of-type", "left", "link", "matches(", "not(", "nth-child(", "nth-column(", "nth-last-child(", "nth-last-column(", "nth-last-of-type(", "nth-of-type(", "only-child", "only-of-type", "optional", "out-of-range", "paused", "placeholder-shown", "playing", "read-only", "read-write", "required", "right", "root", "scope", "target", "user-invalid", "valid", "visited", "first-line", "first-letter", "before", "after", "selection", "backdrop"]
+        let values = ["active", "any", "any-link", "blank", "checked", "cue", "cue-region", "disabled", "enabled", "default", "dir(", "disabled", "drop", "drop(", "empty", "enabled", "first", "first-child", "first-of-type", "fullscreen", "future", "focus", "focus-within", "has(", "hover", "indeterminate", "in-range", "invalid", "lang(", "last-child", "last-of-type", "left", "link", "matches(", "not(", "nth-child(", "nth-column(", "nth-last-child(", "nth-last-column(", "nth-last-of-type(", "nth-of-type(", "only-child", "only-of-type", "optional", "out-of-range", "past", "paused", "placeholder-shown", "playing", "read-only", "read-write", "required", "right", "root", "scope", "target", "user-invalid", "valid", "visited", "first-line", "first-letter", "before", "after", "selection", "backdrop"]
       else
         return []
       endif