CheckKeys: Pretty-Print Key Presses & Releases

checkkeys

#!/bin/bash

### DEPENDENCIES
# `rg`: https://github.com/BurntSushi/ripgrep/
# `awk`
# `xev`

# `--line-buffered` because ripgrep uses a block buffer in piped
# and so doesn't provide instant output by default when redirected
# after to stdout (related: https://unix.stackexchange.com/questions/200235/how-to-use-sed-to-manipulate-continuously-streaming-output)

echo
xev |\
  rg --line-buffered -o '(KeyPress|KeyRelease|\(keysym.*\))' |\
  rg --line-buffered --passthru -e '\(keysym.*, ' -e '\)' -r '' |\
  awk 'ORS=NR%2-1?"\n":": "'