This is for those annoying moments when you wished that macOS had
XkbSetBounceKeysDelay
like Linux does.
This is a bog-simple keyboard event tap that intercepts any (identical) keystrokes that happen within a configurable time window. Magic. See here for the genesis story.
Credit where credit is due: i mostly stole this idea and sample code off another StackOverflow answer.
You should be able to make this work with something like the following:
$ make
$ sudo ./debounceIt needs root because it intercepts keystrokes.
If you really want, you can "install" it. Assuming that
/usr/local/bin is in your $PATH (which it is if you use Homebrew)
you can:
$ make installAnother helpful
contribution,
this time from @cpouldev. If you'd like to auto-start debounce at
login, you might find something like the included LaunchAgent
configuration helpful.
Put that somewhere launchctl can find it, like
~/Library/LaunchAgents/com.debounceMac.app.plist, then load the
configuration. macOS will automatically prompt you to give debounce
Accessibility access, this is needed to be able to intercept and
modify keystrokes.
$ launchctl load ~/Library/LaunchAgents/com.debounceMac.app.plistmacOS will automatically prompt you to give debounce Accessibility
access, this is needed to be able to intercept and modify keystrokes.
When that's done, start it.
$ launchctl start com.debounceMac.appTo remove / uninstall completely:
$ launchctl stop com.debounceMac.app
$ launchctl unload ~/Library/LaunchAgents/com.debounceMac.app.plist
$ rm ~/Library/LaunchAgents/com.debounceMac.app.plist
$ launchctl list
$ rm /usr/local/bin/debounceYou might get an error something like the following, even when running as root.
$ sudo ./debounce
2019-03-03 10:47:02.194 debounce[59588:499245] Initializing an event tap.
2019-03-03 10:47:02.205 debounce[59588:499245] Unable to create event tap. Must run as root or add Accessibility privileges to this app.
2019-03-03 10:47:02.205 debounce[59588:499245] No Event tap in place! You will need to call listen after tapEvents to get events.@DanGrayson kindly alerted me to the
fact that on
modern macOS, you'll need to enable universal accessibility features
to let this work. It appears that you'll need to go to System
Preferences > Privacy > Accessibility, and grant Terminal.app
permission, not the debounce binary as you might expect.