Why Is It So Hard to Detect Keyup Event on Linux?

Re:Why Is It So Hard to Detect Keyup Event on Linux? by patrec on Monday May 17, 2021 @01:09PM (#27185704)

Already done. Kitty and other modern terminals have an extended keyboard interface which allows to detect keypress, keyrelase and arbitrary key combinations (unlike legacy vt100-style terminal emulators, where e.g. Tab and Ctrl-I are indistinguishable). For backwards compatibility you need to switch to this mode by sending an escape sequence.

https://sw.kovidgoyal.net/kitty/keyboard-protocol.html

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Re:Why Is It So Hard to Detect Keyup Event on Linux? by eikenberry on Monday May 17, 2021 @05:30PM (#27188692)

> and other modern terminals

Do you know of any source documenting which terminal emulators support this feature other than kitty?

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Re:Why Is It So Hard to Detect Keyup Event on Linux? by patrec on Tuesday May 18, 2021 @05:18AM (#27192639)

Have a look here: https://gitlab.freedesktop.org/terminal-wg/specifications/-/...

Basically Kovid Goyal, the author of kitty, volunteered to write a spec, based on the work he did for kitty, but got fed up with what he perceived as pointless bikeshedding. The authors of other terminals represented in the terminal-wg (e.g. iterm2, mintty and vte -- which powers terminator, gnome-terminal and others) kept going for a bit, but there is no shared spec yet and I haven't checked if anyone else other than Goyal has implemented something at this point (I thought vte had, but I didn't immediately find it when I looked). It also looks like it might take some time till some de-facto standard emerges.

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