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Re:Vim Clutch – A hardware pedal for improved text editing (... by jolmg on Thursday March 11, 2021 @08:01PM (#26431082)
Ctrl-C and Ctrl-[ also work by default, but personally I use CapsLock after doing `setxkbmap -option caps:escape`.

> Remapping my keyboard isn't a viable option, as I game on my machine sometimes

You can also map something specifically on vim with :imap/:vmap/:cmap.

Re:Vim Clutch – A hardware pedal for improved text editing (... by ilostmymangoman on Friday March 12, 2021 @03:46AM (#26433509)
Please note that Ctrl-C does not do the same thing as Esc or Ctrl-[. More info: https://unix.stackexchange.com/questions/53633/does-using-ct...
Re:Vim Clutch – A hardware pedal for improved text editing (... by jolmg on Friday March 12, 2021 @11:10AM (#26437255)
> Quit insert mode, go back to Normal mode. Do not check for abbreviations. Does not trigger the InsertLeave autocommand event.

Well, it's the same if neither you nor a plugin uses abbreviations nor InsertLeave.

Also, if you don't need that particular behavior of <C-c>, you can do `:map <C-c> <Esc>` to make it behave exactly the same.