3d4f0028d6
* experiment with userspace * reorganise * readme * missing oneshot shift from ignored keys * recombine hands in layout macro
100 lines
3.7 KiB
Markdown
100 lines
3.7 KiB
Markdown
A keymap for 34 keys with 4 layers and no mod-tap.
|
|
|
|
|
|
|
|
## Details
|
|
|
|
- Hold `sym` to activate the symbols layer.
|
|
- Hold `nav` to activate the navigation layer.
|
|
- Hold `sym` and `nav` together to activate the numbers layer.
|
|
- The home row modifiers are oneshot so that it's possible to modify the
|
|
keys on the base layer, where there are no dedicated modifiers.
|
|
- `swap win` sends `cmd-tab` for changing focus in macOS but holds `cmd`
|
|
between consecutive presses.
|
|
- `swap lang` behaves similarly but sends `ctrl-space`, for changing input
|
|
language in macOS.
|
|
|
|
## Oneshot modifiers
|
|
|
|
The home row modifiers can either be held and used as normal, or if no other
|
|
keys are pressed while a modifier is down, the modifier will be queued and
|
|
applied to the next non-modifier keypress. For example to type `shift-cmd-t`,
|
|
type `sym-o-n` (or `nav-a-t`), release, then hit `t`.
|
|
|
|
You can and should hit chords as fast as you like because there are no timers
|
|
involved.
|
|
|
|
Cancel unused modifiers by tapping `nav` or `sym`.
|
|
|
|
### Userspace oneshot implementation
|
|
|
|
For my usage patterns I was hitting stuck modifiers frequently with [`OSM`][]
|
|
(maybe related to [#3963][]?). I'd like to try to help fix this in QMK proper,
|
|
but implementing oneshot mods in userspace first was:
|
|
|
|
1. Fun.
|
|
2. A good exploration of how I think oneshot mods should work without timers.
|
|
|
|
So in the meantime, this [userspace oneshot implementation][] is working well
|
|
for me.
|
|
|
|
## Swapper
|
|
|
|
`swap win` sends `cmd-tab`, but holds `cmd` between consecutive keypresses.
|
|
`cmd` is released when some other key is hit or released. For example
|
|
|
|
nav down, swap win, swap win, nav up -> cmd down, tab, tab, cmd up
|
|
nav down, swap win, enter -> cmd down, tab, cmd up, enter
|
|
|
|
`swap lang` sends `ctrl-space` to swap input languages in macOS and behaves
|
|
similarly.
|
|
|
|
[Swapper implementation.][]
|
|
|
|
## Why no mod-tap?
|
|
|
|
[Mod-tap][] seems to be by far the most popular tool among users of tiny
|
|
keyboards to answer the question of where to put the modifiers, and in the
|
|
right hands it can clearly work brilliantly, but I've always found myself error
|
|
prone and inconsistent with it.
|
|
|
|
With dedicated modifiers, there are three ways one might type `ctrl-c`:
|
|
|
|
ctrl down, ctrl up, c down, c up
|
|
ctrl down, c down, ctrl up, c up
|
|
ctrl down, c down, c up, ctrl up
|
|
|
|
Basically, you never have to worry about the keyups, as long as the keydowns
|
|
occur in the correct order. Similarly, there are three ways one might type
|
|
`ac`:
|
|
|
|
a down, a up, c down, c up
|
|
a down, c down, a up, c up
|
|
a down, c down, c up, a up
|
|
|
|
Replace `a` with `ctrl` and this is exactly what we had before! So if we want
|
|
to put `a` and `ctrl` on the same key we have a problem, because without
|
|
considering timing these sequences become ambiguous. So let's consider timing.
|
|
|
|
The solution to the ambiguity that QMK employs is to configure the
|
|
`TAPPING_TERM` and consider a key held rather than tapped if it is held for
|
|
long enough. My problem with this is that it forces you to slow down to use
|
|
modifiers. By its very nature the tapping term must be longer than the longest
|
|
you would ever hold a key while typing on the slowest laziest Sunday afternoon.
|
|
I'm not typing at 100% speed at all times, but when I am, having to think about
|
|
timing and consciously slow down for certain actions never fails to trip me up.
|
|
|
|
So alas, mod-tap is not for me -- but if it works for you, more power to you.
|
|
:)
|
|
|
|
* * *
|
|
|
|
[My github][]
|
|
|
|
[`OSM`]: /docs/one_shot_keys.md
|
|
[#3963]: https://github.com/qmk/qmk_firmware/issues/3963
|
|
[userspace oneshot implementation]: oneshot.c
|
|
[swapper implementation.]: swapper.c
|
|
[Mod-tap]: https://github.com/qmk/qmk_firmware/blob/master/docs/mod_tap.md
|
|
[My github]: https://github.com/callum-oakley
|