MacOS & ZSH support

[btraas]

MacOS / BSD:

• No realpath command (created alternative function my_realpath)
• No -printf flag on find (replaced with GNU shell parameter expansion, compatible with BSD and ZSH)
• No readarray command (created array in a loop instead)

ZSH:

• Special characters for regex not allowed in shell (wrapped in double quotes)

Tested on macOS/ZSH and Linux/Bash

[ceremcem]

I think we need to add appropriate tests for these. My first question: Were you able to run the tests and see any of them failed? If yes, do they pass now? If no, you should have created failing test first.

[btraas]

Seeing as there's no additional functionality, and the script fails on macOS (without these changes), the existing tests:

• fail as expected on macOS (master) and
• pass as expected on macOS (this PR - MacOS & ZSH support  #2) - see below.

I can add more if you like, what were you wanting to test?

FWIW, I also fixed an issue that caused tests (on master) to produce false negatives on different machines due to locale sorting).

Running tests on Linux (master)

Running tests on macOS (master)

Running tests on macOS (this PR - #2 )

Running tests on linux (this PR - #2)

[ceremcem]

Nice!

[ceremcem]

FYI: I'll test and merge ASAP.