Underscore requires pressing Shift, however.

> I don't like the idea of a punctuation prefix as punctuation usually has a specific meaning somewhere and including it as the first character in a filename looks wrong.

So you don’t use dotfiles? ;)

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necovek an hour ago | parent | next [-]

On non-English keyboards (Serbian/Croatian/Slovenian, but as they are based on QWERTZ, I imagine German and possibly others too), both "+" and "-" might not require pressing Shift either, and are much better characters than comma.

	▲	layer8 39 minutes ago \| parent [-]
		These are inconvenient for doing anything with the script files except invoking them, because these characters introduce command-line options.

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ndsipa_pomu 5 hours ago | parent | prev [-]

Well dotfiles demonstrate that punctuation can have a special meaning in filenames.

I'm not convinced by "quicker to type" arguments as that's rarely the bottleneck, so I'm perfectly happy with using underscores in filenames and variables. I wouldn't use underscore as the beginning character of a filename unless it had a specific meaning to me (e.g. temporary files), so I'd be more inclined to use a two or three character prefix instead.

	▲	layer8 5 hours ago \| parent [-]
		For me it’s not about quickness, but about strain. Like in RSI.