lint.sh is broken on macOS 10.8+ due to a different version of grep

[maksimov]

OSX have switched from GNU grep to BSD grep in version 10.8 and for this reason grep -P is no longer supported.

There is a workaround to install pcre grep, which will install GNU grep and -P will work again:
brew install grep --with-default-names

Another solution is to change grep -P to a relevant perl command, details can be found here.

[zimmski]

I see that "-E" is supported, let's go with that?

[maksimov]

Yep, it seems to work. 👍
I've only tried -e so far and it didn't.

[zimmski]

-e is the argument for the search pattern itself, -E is to select the matcher which interprets those patterns. I am glad that this works with MacOSX I have no way of testing with that OS 😿