nl_tokens: Extracts nearest HTML tag range from <code > content< / code > starting at <code > pos< / code > position
pl_tokens: function ( <mask> , pos , isBackward ) { var len = content . length , i ; var range = require ( 'range' ) ; // max extraction length. I don't think there may be tags larger  // than 2000 characters length var maxLen = Math . min ( 2000 , len ) ; /** @type Range */ var r = null ; var match = function ( pos ) { var m ; if ( content . charAt ( pos ) == '<' && ( m = content . substr ( pos , maxLen ) . match ( startTag ) ) ) return range . create ( pos , m [ 0 ] ) ; } ; // lookup backward, in case we are inside tag already for ( i = pos ; i >= 0 ; i -- ) { if ( r = match ( i ) ) break ; } if ( r && ( r . inside ( pos ) || isBackward ) ) return r ; if ( ! r && isBackward ) return null ; // search forward for ( i = pos ; i < len ; i ++ ) { if ( r = match ( i ) ) return r ; } }