In things that annoy me to an unreasonable degree:
Using periods to replace spaces in filenames.
It's 2023! There is not a single filesystem in use outside a goddamn museum that cannot accept the humble space as a valid character in a filename! STOP DOING PERIODS.
Now there are those who will say, "But Alistair, using spaces in a filename is inconvenient, because you have to quote the filename or escape the spaces when using it at the command line."
And I will grudgingly accept this argument, although your shell sucks.
But I will then say "So pick a different substitute character that doesn't have any syntactic significance in filenames so it can be freely auto-replaced with merry abandon."
Tilde. Logical not. Butt-scratching emoji. Non-breaking Unicode general fuckery character. I don't care. Just not the period.
@cerebrate Had to make this…
1FB25;NO-BREAK GENERAL FUCKERY;Cf;0;BN;<noBreak> 26A4;;;;N;NON-BREAKING GENERAL FUCKERY;;;;