nl_tokens: The string that needs to be matched is escaped
pl_tokens: function stringEscape ( str ) { let stringArray = str . toString ( ) . split ( '' ) ; for ( let j = 0 ; j < stringArray . length ; j ++ ) { for ( let i = 0 ; i < escapeArray . length ; i ++ ) { if ( stringArray [ j ] === escapeArray [ i ] ) { stringArray [ j ] = '\\' + escapeArray [ i ] ; } } } return stringArray . <mask> ( '' ) ; }