* docs: clarify in "Keymap Overview" what LAYOUT is and isn't
It is not strictly necessary to use LAYOUT macros in keyboard.c, but it
is a convenient abstraction of hardware internals, allowing focus on the
physical keyboard layout.
From the C source point of view LAYOUT is macro with a parameter list,
which expands to a array of rows that each is an array with a keyboard
scancode for each column. A macro parameter list is not an array, and
even less a single array.
Perhaps no big deal, but also no reason to give incorrect hints.
* docs: update "Understanding QMK's Code" to current code structure introduced in 96e2b13d1d
This part of the documentation was no longer correct. I tried updating
it, mainly copy editing and using github links to latest release.
This is not trying to fix all problems, but just trying to fix some
problems while reusing much of the old phrases and structure.
* Update docs to use "qmk format-python"
When helix/rev2 was using split_common, it didn't work properly and I couldn't type on the right hand side.
The cause is that the following code, added in 0.16.0 to `quantum/keyboard.c`, does not include `quantum/split_common/split_util.h` but instead includes `keyboards/helix/rev2/split_util.h`. Therefore, `split_pre_init()/split_post_init()` in `quantum/split_common/split_util.c` was not called.
```c
#ifdef SPLIT_KEYBOARD
# include "split_util.h"
#endif
```
* add licenses message to helix/rev2 files
* Minimize the processing of helix/rev2/local_features.mk
* Changed helix/rev2 default setting to use split_common
* fix helix/rev2:edvorakjp build error
* Remove unnecessary '#include' from keymap.c
* helix keymaps Workaround for build errors. five_rows_jis, fraanrosi, froggy, froggy_106, yshrsmz
* Revert "fix helix/rev2:edvorakjp build error"
This reverts commit 731dbbe15155b3efe2ff9f5ad61c7d0cf529e837.
Separated into a single PR #16433.
* Revert "Changed helix/rev2 default setting to use split_common"
This reverts commit e76dbd7762e06e0781ee004213878b1a5029fa98.
* add 'SPLIT_*_STATE_ENABLE' into helix/rev2/config.h
* Revert "helix keymaps Workaround for build errors. five_rows_jis, fraanrosi, froggy, froggy_106, yshrsmz"
This reverts commit 9b316c1c6a532f908f2ac430233089797ce7c794.
* change helix:default to use split_common
* change helix:five_rows to use split_common
* add comment into helix/rev2/rules.mk
* change helix:led_test to use split_common
