Scheme %term% guile %1/%2 0 0 4 scm scheme string " \("\|\n\) comment ; \n numbers [0-9]+\.\b chars \b\(#t\|#f\|#\\space\|\\newline\)\b keywords \b\(and\|begin\|case\|cond\|define\|delay\|do\|else\|if\|lambda\|let\|let\*\|letrec\|or\|quasiquote\|quote\|set!\|unquote\|unquote-splicing\)\b operators \(/\|\*\|<<\|<\|>>\|>\|=\|==\|!=\|<=\|>=\|%\|+\|-\||\|&\|\.\) chars \((\|)\|\)