Keep your xmodmaps in ~/.Xmodmaps/ and this utility will find the next map file and replace your ~/.Xmodmap.

1. Looks for files in ~/.Xmodmaps/
2. Finds the next .Xmodmap file
3. Creates a diff between current and new
4. Executes xmodmap
5. Copies the content for the next Xmodmap file into ~/.Xmodmap

Using xmodmap on only changed keycodes is a lot faster.

• Better error handling
• Replace PHP code with Rust

mkdir ~/.Xmodmaps
cp ~/.Xmodmap ~/.Xmodmaps/
git clone https://github.com/eigan/xmodmapswitch.git

bindcode <keycode> exec php <path/to/project>/xmodmapswitch.php