qmk-keychron-q3-colemak-dh/keyboards/crkbd/keymaps/nimishgautam

Full-featured Corne layout for Linux and MacOS

This is a generic layout for Corne, especially for someone who:

• has to type in English
• occasionally has to type in Swedish
• Switches regularly between Linux and MacOS
• Prioritizes text navigation
  • This includes selecting whole lines and deleting words
• uses VIM or VIM bindings for text navigation
• uses the 'compose' feature in Linux and uses the 'mac user dictionary' trick for getting compose features
• Home row modifiers for optimal ergo (hopefully optimal)

This also features:

• OLED displays:
• indicating OS and LED status (scroll lock, numlock, caps, compose) on the master side
• layer and modifiers on the slave side
• LED lights:
• color changes to indicate layer and modifier status
• LED matrix effects around keypresses

Major notes

OS 'detection'

• I assume MacOS as the default. Using the ctrl/gui swap magic keycode switches everything to Linux
• Most of the Linux codes should work in Windows
• Yes, there are lots of if-statements around which key code to send here... this isn't the most sustainable way to do it, but is the most memory-efficient way I could come up with

RGB matrix effects

• Not all RGB matrix effects are compatible with changing the color on layer/mod change. Some of them get caught in a loop and freeze half of the keyboard, so beware of which ones you activate
• Some RGB settings are stored in eeprom (despite me using the noeeprom() version of functions) If something is weird, try clearing eeprom
• The color-changing function probably should be in the layer_state_set_user function, except that function doesn't give the state of the modifiers. So instead I have it done in a call that updates the OLEDs

LED state explicitly not shared

• For some reason, sharing the LED state (as a split keyboard function) will cause the slave side of the keyboard to freeze up if you type too fast. Don't do it!

Windowing shortcuts

• Again, MacOS is assumed to be the default so I changed as many Linux shortcuts as I could to make them compatible with MacOS. Some of them don't have default shortcuts defined (such as 'move window left' or 'launch calculator') so I just made those as needed

Right-shift preferred

• At the time of this writing, left-shift wasn't always being registered as a modifier key when checking modmasks, so I stuck with everything using right-shift as it had the expected effects

Compose key

• I used macos compose