in reply to Re^10: regexp class (no bugs)
in thread re: regexp class

I guess if the requirement is to multiply two numbers $x, and $y, $x + $y isn't a bug, it's merely incomplete

No. And you know it. That's another "silly extremes" example. It's just an attempt to try and "win an argument", rather than further a technical discussion.

A photo editor that has a red-eye feature that turns all eyes red, has a bug.

But if it doesn't have a sepia filter, it doesn't have a bug, it just doesn't support that feature.

The difference is clear and easily understood.

Examine what is said, not who speaks -- Silence betokens consent -- Love the truth but pardon error.
"Science is about questioning the status quo. Questioning authority".
In the absence of evidence, opinion is indistinguishable from prejudice.