Well, you
can do that with a regex, but it's a good degree more complicated.....
abowley@krait:~$ (echo 'Madrid(Spain(Europe)' && echo 'Madrid(Spain(Eu
+rope))' && echo 'Madrid(Spain Europe))' && echo 'a(b(c))' && echo 'a
+(b (c) d (e) f)') | perl -mstrict -wpe 'BEGIN { $brackets = qr#\([^()
+]*(?:(??{$brackets})[^()]*)*\)# }; s#([^)]+?)($brackets)([^(]+)# ( my
+ $s = $1 ) =~ tr/(/ /; ( my $e = $3 ) =~ tr/)/ /; $s . $2 . $e #ge;'
Madrid Spain(Europe)
Madrid(Spain(Europe))
Madrid(Spain Europe)
a(b(c))
a (b (c) d (e) f)
