Transforming the most useless key ever in the most useful one.
This fork removes the functionality of Esc replacing CAPSLOCK. The Escape key isn't remapped as it was in the original, allowing it to function as usual.
The CAPSLOCK dual mode functionality remains exactly the same however.
This is forked from: https://github.com/oblitum/caps2esc
All credit goes to Francisco Lopes da Silva.
For vi/Vim/NeoVim addicts at last.
- Make what's useful comfortably present, just below your Pinky
By moving both ESC and CTRL functions to the CAPSLOCK location
Because CAPSLOCK is just "right there" and making it CTRL when key-chording and ESC when pressed alone is quite handy, specially in vi.
On Arch Linux download PKGBUILD and run:
makepkg -i
Once that's finished run
sudo systemctl enable caps2esc.service
sudo systemctl start caps2esc.service
gcc caps2esc.c -o caps2esc -I/usr/include/libevdev-1.0 -levdev -ludev
The following daemonized sample execution increases the application priority (since it'll be responsible for a vital input device, just to make sure it stays responsible):
sudo nice -n -20 ./caps2esc >caps2esc.log 2>caps2esc.err &
Executing caps2esc without parameters (with the necessary privileges to access
input devices) will make it monitor any devices connected (or that gets
connected) that produces CAPSLOCK or ESC events.
Upon detection it will fork and exec itself now passing the path of the detected device as its first parameter. This child instance is then responsible for producing an uinput clone of such device and doing the programmatic keymapping of such device until it disconnects, at which time it ends its execution.
As always, there's always a caveat:
- It will "grab" the detected devices for itself.
- If you tweak your key repeat settings, check whether they get reset.
Please check this report about the resolution.
I can't recall when I started using CAPSLOCK as both ESC and CTRL but it has been quite some time already. It started when I was on OS X where it was quite easy to achieve using the Karabiner, which already provides an option to turn CTRL into CTRL/ESC (which can be coupled with OS X system settings that turn CAPSLOCK into CTRL).
Moving on, permanently making Linux my home, I searched and tweaked a similar solution based on xmodmap and xcape:
It's a simple solution but with many annoying drawbacks I couldn't stand in the end:
- It resets any time a device change happens (bluetooth, usb, any) or the laptop lid is closed or when logging off and needs to be re-executed.
- It depends on X. Doesn't work on TTY (bare terminal based machine, CTRL-ALT F2, etc).
Meanwhile on Windows land, I had a definitive solution based on my Interception library that always works perfectly, no hiccups.
It made me envy enough, so I ported the Windows Interception caps2esc sample to Linux based upon evdev, udev and uinput.
Copyright © 2016 Francisco Lopes da Silva.