till you come to the end:  then stop.'

  These were the verses the White Rabbit read:--

        `They told me you had been to her,
          And mentioned me to him:
        She gave me a good character,
          But said I could not swim.

        He sent them word I had not gone
          (We know it to be true):
        If she should push the matter on,
          What would become of you?

pkg regexp/syntax, const EmptyWordBoundary = 16
pkg regexp/syntax, const ErrInternalError = "regexp/syntax: internal error"
pkg regexp/syntax, const ErrInvalidCharClass = "invalid character class"
pkg regexp/syntax, const ErrInvalidCharRange = "invalid character class range"
pkg regexp/syntax, const ErrInvalidEscape = "invalid escape sequence"
pkg regexp/syntax, const ErrInvalidNamedCapture = "invalid named capture"