Sorry - I probably didn't make my worries as clear as they should be. I am wondering if it is a problem with qr//m itself, rather than Test::More. Otherwise, maybe Test::More is doing something with the qr//m that I wasn't expecting? I tried looking inside the source of Test::More, but got lost pretty quick.

When you say "this looks like a bug" - do you mean in Test::More, perl, or my code?

If your code is supposed to show that Test::More is fine, well, I'm not sure that it does. Your last test *should* be failing rather than passing, for the same reason my test # 4 should be passing. $string *should* match $pattern_m, so like() should pass, and unlike() should fail.

Thanks,
Gary