Regular expression does not match multi-line string

[Koichi Nakashima]

Regular expression does not match multi-line string.

$ goawk 'BEGIN{VAR="a\nb"; print match(VAR, /^a.*b$/)}'
0
$ goawk 'BEGIN{VAR="a\nb"; print match(VAR, /(?s)^a.*b$/)}'
1

$ gawk 'BEGIN{VAR="a\nb"; print match(VAR, /^a.*b$/)}'
1
$ mawk 'BEGIN{VAR="a\nb"; print match(VAR, /^a.*b$/)}'
1

[Ben Hoyt]

Fixed in #133 (also in the other cases where this applies).