Spaces in file names will always be fiddly though. It'll work, but it'll still be wrong, because arguments are space separated, and having spaced file names totally messes with that.

Good point. Do filesystems use a normal form to at least prevent having two files with effectively the same name?

I should point out the flip side though, that there's no avoiding Unicode in filenames. Users in languages that don't use the Latin alphabet (such as Japanese, Chinese, Korean, Hebrew, Arabic, Greek and Russian, and the list could go on) can reasonably expect to be able to give a file a name they can read and understand with no extra effort. All the software woes that come with it - too bad, software needs to deal with it.

It can't say no either

You don't necessarily need speech for consent since non-verbal/mute people exist.

I feel like unicode in the filename is heavily against the spirit of using squashfs, or at least the ways I've seen it used.

Well, a.out doesn't make much sense these days.

Gotta move to .elf

Pi Pico SDK does. Well, the version for debugging symbols, anyway. Regular executable is .uf2.

I reserve .elf for executables for other platforms, like microcontroller firmware.