Also try the version sub-command

[sindresorhus]

Some binaries, like $ openssl, show the version using a sub-command $ openssl version instead of a flag like $ curl --version. If no arguments are given, it would be useful to first try foo --version and then foo version.

We should also hard-code a list of common binaries that use the version sub-command, so we try that first for those. For improved performance. Binaries like, openssl, swiftlint, etc.

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[lbell]

Possibly related: ffmpeg (and the whole ff- family) uses -version (one dash).

[sindresorhus]

For anyone that wants to work on this, see the initial attempt and feedback in #13.

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[stroncium]

For the record, I did try it on every possible command in my system, and after waiting for an hour and closing hundreds of windows I can say I'm fairly satisfied with result: nearly half of commands did produce a version, and a lot of ones which didn't are gui-only tools which aren't supposed to have one(though I didn't check manually) and some obscure names(so internal utils, I suppose).

NOTE: don't recommend to reproduce it, my system is nearly destroyed atm, and that's just what I see from a glance.

[sindresorhus]

Thanks doing such thorough testing 👌