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Re:macOS deprecating scripting language runtimes, including ... by cynwoody on Thursday June 06, 2019 @02:41AM (#20112148)
Mac OS versions prior to OS X used ':'.

Mac OS X, initially released on 24 March 2001, uses '/', like other Unix-derived systems.

Also, like other unices, OS X uses '\n' as the line ending. Prior Mac OSs used '\r' as the line ending. Windows uses '\r\n'.

Re:macOS deprecating scripting language runtimes, including ... by pjmlp on Thursday June 06, 2019 @07:16AM (#20113377)
In A/UX you could use both.
Re:macOS deprecating scripting language runtimes, including ... by hestefisk on Thursday June 06, 2019 @05:07AM (#20112805)
Similar, HFS+ used to provide the option for case insensitivity. Both things were built in for legacy support reasons during the transition from OS 9 to X, as with Carbon.
Re:macOS deprecating scripting language runtimes, including ... by zwily on Thursday June 06, 2019 @08:13AM (#20113741)
Macs still come with case insensitivity on by default.
Re:macOS deprecating scripting language runtimes, including ... by codesnik on Thursday June 06, 2019 @05:06AM (#20112802)
but in Finder you can use "/" in filenames, and can't use ":". They got swapped if you look on the file from Terminal.