nl_tokens: Rewrites whitespace ranges : [ \ t \ r \ n \ f ] - > \ s .
pl_tokens: function rewriteWhitespaceRanges ( path ) { const { node } = path ; let spacePath = null ; let tPath = null ; let nPath = null ; let rPath = null ; let fPath = null ; node . expressions . forEach ( ( <mask> , i ) => { // Space if ( isChar ( expression , ' ' ) ) { spacePath = path . getChild ( i ) ; } // \t else if ( isMetaChar ( expression , '\\t' ) ) { tPath = path . getChild ( i ) ; } // \n else if ( isMetaChar ( expression , '\\n' ) ) { nPath = path . getChild ( i ) ; } // \r else if ( isMetaChar ( expression , '\\r' ) ) { rPath = path . getChild ( i ) ; } // \f else if ( isMetaChar ( expression , '\\f' ) ) { fPath = path . getChild ( i ) ; } } ) ; // If we found the whole pattern, replace it. // Make \f optional. if ( spacePath && tPath && nPath && rPath ) { // Put \s in place of \n. nPath . node . value = '\\s' ; // Other paths are removed. spacePath . remove ( ) ; tPath . remove ( ) ; rPath . remove ( ) ; if ( fPath ) { fPath . remove ( ) ; } } }