Allow remapping the Fn key in the Fn Layer

[arkku]

Wootility doesn't allow remapping the Fn key used to activate an Fn layer in the layer itself. This prevents mapping multiple keys to the same Fn key (e.g., two Fn 1 keys in layer 0) and then having the combination of those two keys to work as a different key.

The use case may seem obscure, but it has to do with Mac F-keys, e.g.:

• map both Right Ctrl and Right GUI to "Fn 1" in the main layer
• on Fn Layer 1, map the same keys both to Right Ctrl
• using Karabiner Elements on macOS, map (in software) Right Ctrl to the Apple Fn key
• now, pressing either Fn 1 key + 1 produces F1, but to access the alternate function of F1 I could press both Fn 1 keys, which would activate the Fn 1 layer and then the Right Ctrl mapping for the other key on the Fn 1 layer: pressing both Fn 1 keys + 1 would produce Apple Fn + F1, to access the alternate function

This works in other keyboards (e.g., QMK-based), and I was surprised to discover that Wootility doesn't actually let me remap the Fn 1 key in the Fn 1 layer. Perhaps it is just assuming that the key can't be pressed in its own layer, but in this case there would be the two bindings for Fn 1.

(It's possible to work around this by binding the other one to Fn 2 and duplicating the Fn Layer 1, but it costs a layer + changes have to be maintained across two layers.)

[simon-wh]

This scenario you're presenting is a little convoluted and a bit tricky to follow, but I think I understand.
I took a fresh look at the enforcement we apply on the Fn keys and I realised that it is stricter than necessary, when pressing a key like Fn 1 on the main layer, it will "lock in" the layer & bind that it is activating until it is de-actuated, so there shouldn't be any need to force the key to mirror the Fn bind on the target layer.

I tested the configuration I understood from your description with the Wootility enforcement disabled and it just works. I'll get this behaviour adjusted, I think we'll move this blocking of editing to just the scenario where you have a single key with Fn targeting that layer (i.e. the scenario where activating the bind on the target layer is impossible), so what you're looking to do should just work

[arkku]

I just tried this in the beta version and it works fine, i.e., if I map two Fn 1 keys I can remap them both in the Fn 1 layer. Thanks!