Escape dots in patterns

[giuscris]

Thank you @monperrus for this repository.

I've noticed that several patterns contain unescaped dots, causing false positives.
I fixed these patterns and added a check to validate.py to ensure they're properly escaped.

[monperrus]

Thanks @giuscris

The one reason dot is good is that you can string-match with them, in case your platform has no support for regexp or you care for speed.

[giuscris]

Yes, of course you can string-match but some patterns are already regular expressions. It would be a partial match in any case.

[monperrus]

you're right. Maybe we should have pattern (mandatory) and pattern_regexp (optional) and change the CI validation script accordingly.

[doublex]

+1
Works for me

[monperrus]

thanks a lot @giuscris