gistfile1.txt

class Splinter::RegexpParser

rule

  \[(\^)?   { state = :CCLASS ; [:LSQUARE, ss[1] && :negate] }
  \(        { [:LPAREN,  text]  }
  \)        { [:RPAREN,  text]  }
  \|        { [:PIPE,    text]  }
  \+        { [:PLUS,    text]  }
  \*        { [:STAR,    text]  }
  \?        { [:QMARK,   text]  }
  \.        { [:DOT,     text]  }
  \\?(.)    { [:CHAR,    ss[1]] }

  :CCLASS   \]                        { state = nil ; [:RSQUARE, text] }
  :CCLASS   (?:\\.|[^-])-(\\.|[^-\]]) { [:RANGE,   text]               }
  :CCLASS   (?:\\(.)|(.))             { [:CHAR, ss[1] || ss[2]]        }

end