[Feature Request] Ability to make keyboard LEDs light up when the `FLOW_TAP_TERM` has passed

[amarz45]

Feature Request Type

• Core functionality
• Add-on hardware support (eg. audio, RGB, OLED screen, etc.)
• Alteration (enhancement/optimization) of existing feature(s)
• New behavior

Description

I defined FLOW_TAP_TERM as 200, which makes it so that if I tapped a key 200 ms prior, any key press of a tap-hold key is treated as a tap. It would be very useful if there was a feature that allows you to light up the keyboard’s LEDs/RGB immediately when flow tap is no longer active, so that I know exactly when I can use tap-hold keys again. This would be especially useful when switching between fast typing and using keyboard shortcuts, for example in a text editor. I don’t know if this is currently possible by defining a function in keymap.c, but based on the tap-hold documentation I don’t think it is.

[drashna]

Not sure that this is something that we'd want in the core code, but could be implemented in a community module, possibly.

There isn't any sort of built in hook or callback for this, but you could use within_flow_tap_term, along with is_flow_tap_key, as both of these are "publicly accessible" functions.

The main caveat is that you'd basically have to iterate over all of the keys, for the keycodes and such. (I do have code that does this, in the "layer map" module I have).