Switching keymap

As some of you might know, I am now using a Typematrix 2030 on a daily basis. When I switched to this great keyboard I also adopted a new layout on it : Colemak.

However, to be able to pair with others not using a Colemak mapping, I did not set the default mapping to Colemak but I instead use an udev rule to set the input method to Colemak only for the Typematrix.

Write a keymap switch script

Thanks to @BitardMichael tips and existing scripts I ended up with the following script saved in /usr/local/bin/set_typematrix_colemak_mapping

One of the tricky part was having a way of executing the script only when the keyboard is ready, without blocking udev’s job (or the keyboard is not yet visible by the X system). The workaround I found was scheduling the execution of the job with the simple at command.

Tell udev to run the script on keyboard detection

The process is really easy, all you need to do is to add the following to a new file : /lib/udev/rules.d/85-typematrix.rules

Adapting it to your use case

If you are using another keyboard than a Typematrix you will need to adapt the udev rule with the proper Vendor / Product IDs (you can grab them with lsusb). For the xinput part, you will need to adjust the grep to match your hardware.

Of course the same goes for your layout : colemak / dvorak / bépo …

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