MacOS compatibility

[biziclop]

Suggested macOS (High Sierra) support while trying to keep compatibility.

Also, I would post a pull request to Marco Bonardo's hair for being a total uncooperating bonehead.

[SebastianSimon]

Uh, while you’re here, I’m planning a change involving grep -Pqz or grep --perl-regexp --quiet --null-data. Can you confirm that these options are supported on MacOS?

[biziclop]

Hi, here is a dump of man grep on macOS High Sierra (10.3):
https://pastebin.com/raw/LknRA0Tc

• no references are for perl. I only see -E, --extended-regexp, -G, --basic-regexp which might be relevant.
• there is -q, --quiet, --silent mode: “Quiet mode: suppress normal output. grep will only search a file until a match has been found, making searches potentially less expensive.”
• there is a --null option: “Prints a zero-byte after the file name.”

Here is man re_format: https://pastebin.com/raw/84m4niFf

I have to think about the other questions. Anyway, I pull-requested my version mainly for comparison, but of course it would be nice to have a one-click solution for each platform, so I will try to fix my version (and answer your questions).

Thanks!

[SebastianSimon]

Okay, I actually managed to find an alternative that only uses -Eq. It’s the fix for #5, which I’ll commit after some testing.

[SebastianSimon]

it would be nice to have a one-click solution for each platform

Yes, but if the script effectively devolves into something like

if [[ os = 'MacOS' ]]; then
  # Entire script with MacOS syntax
else
  # Entire script with Linux syntax
fi

then I’m not convinced that it’s worth it to keep everything in one file.

[SebastianSimon]

As this repo has moved on quite far by now, I’ll close this PR. I will not be able to test anything on a Mac, currently, so it is up to you to keep your fork up and running. Good luck!