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You’d think that in 2024 you’d have an easier way to enter a true minus sign glyph (−) instead of a dash (-) in Linux.
And this isn’t just one for typography geeks either, it’s an accessibility issue.
Imagine you have a minus button in a web form. A screenreader would read it as a dash button unless you used the proper character. (The workaround, of course, is to use aria-label.)
How do you want to access it?
U+2212 is a bit clunky but with so many characters available how do you make a selection and which keystrokes do you assign them to?
I've no real idea myself. Computer keyboards are so damned inadequate for typesetting purposes.
@calmeilles There apparently is a compose key combination for it so that’s good enough for me :) https://mstdn.io/@JRepin/111953078712412670
That gives Comp dash underscore. Which for reasons entirely beyond me doesn't work here. 
@aral @calmeilles Indeed! There is a compose key combination for anything!