optional argument of match accessors

[RT Happe <rthappe@mathematik.uni-freiburg.de>]

According to the manual, the second argument of (MATCH:END M [I]) is
optional, but scsh (0.5.3) itself doesn't think so:

  Warning: wrong number of arguments
           (match:end (regexp-search (rx "aaa") "aaaaa"))
           (procedure wants: (:value :exact-integer))
           (arguments are: (:value))

rthappe