diff --git a/keyboards/planck/keymaps/callum/keymap.c b/keyboards/planck/keymaps/callum/keymap.c deleted file mode 100644 index 50c0122a903..00000000000 --- a/keyboards/planck/keymaps/callum/keymap.c +++ /dev/null @@ -1,260 +0,0 @@ -#include "planck.h" -#include "action_layer.h" - -#define a KC_A -#define b KC_B -#define c KC_C -#define d KC_D -#define e KC_E -#define f KC_F -#define g KC_G -#define h KC_H -#define i KC_I -#define j KC_J -#define k KC_K -#define l KC_L -#define m KC_M -#define n KC_N -#define o KC_O -#define p KC_P -#define q KC_Q -#define r KC_R -#define s KC_S -#define t KC_T -#define u KC_U -#define v KC_V -#define w KC_W -#define x KC_X -#define y KC_Y -#define z KC_Z - -#define lalt KC_LALT -#define lctl KC_LCTL -#define lsft KC_LSFT -#define ralt KC_RALT -#define rctl KC_RCTL -#define rsft KC_RSFT - -#define n0 KC_0 -#define n1 KC_1 -#define n2 KC_2 -#define n3 KC_3 -#define n4 KC_4 -#define n5 KC_5 -#define n6 KC_6 -#define n7 KC_7 -#define n8 KC_8 -#define n9 KC_9 - -#define ampr KC_AMPR -#define astr KC_ASTR -#define at KC_AT -#define bsls KC_BSLS -#define bspc KC_BSPC -#define caps KC_CAPS -#define circ KC_CIRC -#define comm KC_COMM -#define dash A(KC_MINS) // en-dash (–); or with shift: em-dash (—) -#define del KC_DEL -#define dlr KC_DLR -#define dot KC_DOT -#define ent KC_ENT -#define eql KC_EQL -#define esc KC_ESC -#define exlm KC_EXLM -#define grv KC_GRV -#define hash KC_HASH -#define lbrc KC_LBRC -#define lcbr KC_LCBR -#define lprn KC_LPRN -#define mins KC_MINS -#define perc KC_PERC -#define pipe KC_PIPE -#define plus KC_PLUS -#define quot KC_QUOT -#define rbrc KC_RBRC -#define rcbr KC_RCBR -#define rprn KC_RPRN -#define scln KC_SCLN -#define slsh KC_SLSH -#define spc KC_SPC -#define tab KC_TAB -#define tild KC_TILD - -#define down KC_DOWN -#define home G(KC_LEFT) -#define end G(KC_RGHT) -#define up KC_UP -#define pgdn KC_PGDN -#define pgup KC_PGUP -#define left KC_LEFT -#define rght KC_RGHT - -#define tabl G(S(KC_LBRC)) -#define tabr G(S(KC_RBRC)) -#define fwd G(KC_RBRC) -#define back G(KC_LBRC) -#define slup S(A(KC_UP)) // Previous unread in Slack -#define sldn S(A(KC_DOWN)) // Next unread in Slack - -#define ctl1 C(KC_1) // Desktop 1 (6 with shift) -#define ctl2 C(KC_2) // Desktop 2 (7 with shift) -#define ctl3 C(KC_3) // Desktop 3 (8 with shift) -#define ctl4 C(KC_4) // Desktop 4 (9 with shift) -#define ctl5 C(KC_5) // Desktop 5 (10 with shift) -#define ctl6 C(KC_6) // Screenshot -#define ctl7 C(KC_7) // Brightness up -#define ctl8 C(KC_8) // Brightness down - -#define f1 KC_F1 -#define f2 KC_F2 -#define f3 KC_F3 -#define f4 KC_F4 -#define f5 KC_F5 -#define f6 KC_F6 -#define f7 KC_F7 -#define f8 KC_F8 -#define f9 KC_F9 -#define f10 KC_F10 -#define f11 KC_F11 -#define f12 KC_F12 -#define f13 KC_F13 -#define f14 KC_F14 -#define f15 KC_F15 -#define f16 KC_F16 -#define f17 KC_F17 -#define f18 KC_F18 -#define f19 KC_F19 -#define f20 KC_F20 - -#define mute KC_MUTE -#define next KC_MNXT -#define play KC_MPLY -#define prev KC_MPRV -#define vold KC_VOLD -#define volu KC_VOLU - -#define symb MO(SYMB) -#define move MO(MOVE) -#define func MO(FUNC) - -#define rset RESET -#define powr KC_POWER - -#define ____ KC_TRNS -#define xxxx KC_NO - -extern keymap_config_t keymap_config; - -enum planck_layers { - BASE, - SYMB, - MOVE, - FUNC, -}; - -enum planck_keycodes { - // Curly quotes - lcqt = SAFE_RANGE, - rcqt, - - // "Smart" mods - cmd, -}; - -const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = { - [BASE] = LAYOUT_planck_grid( - tab, q, w, f, p, g, j, l, u, y, scln, mins, - bspc, a, r, s, t, d, h, n, e, i, o, quot, - lsft, z, x, c, v, b, k, m, comm, dot, slsh, rsft, - func, lctl, lalt, cmd, move, ent, spc, symb, cmd, ralt, rctl, func - ), - - [SYMB] = LAYOUT_planck_grid( - esc, n7, n5, n3, n1, n9, n8, n0, n2, n4, n6, dash, - lcqt, at, dlr, eql, lprn, lbrc, rbrc, rprn, astr, hash, plus, rcqt, - ____, grv, pipe, bsls, lcbr, tild, circ, rcbr, ampr, exlm, perc, ____, - ____, ____, ____, ____, ____, ____, ____, ____, ____, ____, ____, ____ - ), - - [MOVE] = LAYOUT_planck_grid( - esc, ctl1, ctl2, ctl3, ctl4, ctl5, ctl6, home, up, end, xxxx, xxxx, - del, play, volu, tabl, tabr, slup, ctl7, left, down, rght, caps, xxxx, - ____, mute, vold, back, fwd, sldn, ctl8, pgdn, pgup, xxxx, xxxx, ____, - ____, ____, ____, ____, ____, ____, ____, ____, ____, ____, ____, ____ - ), - - [FUNC] = LAYOUT_planck_grid( - rset, f7, f5, f3, f1, f9, f8, f10, f2, f4, f6, xxxx, - xxxx, f17, f15, f13, f11, f19, f18, f20, f12, f14, f16, xxxx, - ____, xxxx, xxxx, xxxx, xxxx, xxxx, xxxx, xxxx, xxxx, xxxx, xxxx, ____, - ____, ____, ____, ____, ____, ____, ____, ____, ____, ____, ____, ____ - ), -}; - -bool send_string_if_keydown( - keyrecord_t *record, - const char *unshifted, - const char *shifted) { - if (record->event.pressed) { - if (shifted) { - uint8_t shifts = get_mods() & MOD_MASK_SHIFT; - if (shifts) { - del_mods(shifts); - send_string(shifted); - add_mods(shifts); - } else { - send_string(unshifted); - } - } else { - send_string(unshifted); - } - } - return true; -} - -// Holding both cmd keys will instead register as cmd + ctl -bool smart_cmd(keyrecord_t *record) { - static int cmd_keys_down = 0; - - if (record->event.pressed) { - if (cmd_keys_down == 0) { - register_code(KC_LCMD); - } else { - register_code(KC_LCTL); - } - cmd_keys_down++; - } else { - if (cmd_keys_down == 1) { - unregister_code(KC_LCMD); - } else { - unregister_code(KC_LCTL); - } - cmd_keys_down--; - } - return true; -} - -bool process_record_user(uint16_t keycode, keyrecord_t *record) { - switch (keycode) { - // The macOS shortcuts for curly quotes are horrible, so this rebinds - // them so that shift toggles single–double instead of left–right, and - // then both varieties of left quote can share one key, and both - // varieties of right quote share another. - case lcqt: - return send_string_if_keydown( - record, - SS_LALT("]"), // left single quote (‘) - SS_LALT("[")); // left double quote (“) - case rcqt: - return send_string_if_keydown( - record, - SS_LALT(SS_LSFT("]")), // right single quote (’) - SS_LALT(SS_LSFT("["))); // right double quote (”) - - // cmd + cmd -> cmd + ctl - case cmd: - return smart_cmd(record); - } - return true; -} diff --git a/keyboards/planck/keymaps/callum/readme.md b/keyboards/planck/keymaps/callum/readme.md deleted file mode 100644 index 471de2b741b..00000000000 --- a/keyboards/planck/keymaps/callum/readme.md +++ /dev/null @@ -1,30 +0,0 @@ -# callum’s planck layout - -This is a layout for the grid planck, built with a few ideals in mind: - -- Consistent and minimal response times should be maintained. Keys that react - differently depending on whether they are tapped or held, keys that react - differently if they are double tapped, etc. should be avoided – they - inevitably send their keycode later than a normal key – interrupting the - immediate feedback from the screen. Therefore we restrict ourselves to - chording as our only means of getting more than one symbol out of a single - physical key. - -- The hands should never need to leave the home position. The usual culprit for - this is the arrow cluster, so the arrow cluster should be as close to home as - possible. - -- There should be two of every modifier (one on each side), otherwise certain - long key combinations become hard to make. - -- It should be possible to do things you might want to do while using the mouse - with only the left hand (e.g. change tabs, navigate back or forwards in - browser history). - -- Symbols should be arranged so that the most frequently used are easiest to - reach. This includes numbers, and lower numbers are more commonly used than - higher ones. (number arrangement borrowed from [dustypomeleau’s minidox - layout][]). - -[dustypomeleau’s minidox layout]: https://github.com/qmk/qmk_firmware/tree/master/keyboards/minidox/keymaps/dustypomerleau -[keymap.c]: keymap.c diff --git a/keyboards/planck/keymaps/callum/rules.mk b/keyboards/planck/keymaps/callum/rules.mk deleted file mode 100644 index 9615222d1bd..00000000000 --- a/keyboards/planck/keymaps/callum/rules.mk +++ /dev/null @@ -1,7 +0,0 @@ -BOOTMAGIC_ENABLE = no -MOUSEKEY_ENABLE = no -CONSOLE_ENABLE = no -COMMAND_ENABLE = yes -MIDI_ENABLE = no -AUDIO_ENABLE = yes -RGBLIGHT_ENABLE = no diff --git a/layouts/community/ortho_4x12/callum/config.h b/layouts/community/ortho_4x12/callum/config.h new file mode 100644 index 00000000000..8034fe51b6f --- /dev/null +++ b/layouts/community/ortho_4x12/callum/config.h @@ -0,0 +1,14 @@ +#pragma once + +#define LAYOUT_callum( \ + KEY00, KEY01, KEY02, KEY03, KEY04, KEY05, KEY06, KEY07, KEY08, KEY09, \ + KEY10, KEY11, KEY12, KEY13, KEY14, KEY15, KEY16, KEY17, KEY18, KEY19, \ + KEY20, KEY21, KEY22, KEY23, KEY24, KEY25, KEY26, KEY27, KEY28, KEY29, \ + KEY30, KEY31, KEY32, KEY33 \ +) \ +LAYOUT_ortho_4x12( \ + KEY00, KEY01, KEY02, KEY03, KEY04, KC_NO, KC_NO, KEY05, KEY06, KEY07, KEY08, KEY09, \ + KEY10, KEY11, KEY12, KEY13, KEY14, KC_NO, KC_NO, KEY15, KEY16, KEY17, KEY18, KEY19, \ + KEY20, KEY21, KEY22, KEY23, KEY24, KC_NO, KC_NO, KEY25, KEY26, KEY27, KEY28, KEY29, \ + KC_NO, KC_NO, KC_NO, KEY30, KEY31, KC_NO, KC_NO, KEY32, KEY33, KC_NO, KC_NO, KC_NO \ +) diff --git a/layouts/community/ortho_4x12/callum/keymap.c b/layouts/community/ortho_4x12/callum/keymap.c new file mode 100644 index 00000000000..acff75905dc --- /dev/null +++ b/layouts/community/ortho_4x12/callum/keymap.c @@ -0,0 +1 @@ +// Intentionally empty. See /users/callum/readme.md. diff --git a/users/callum/callum.c b/users/callum/callum.c new file mode 100644 index 00000000000..4661902af54 --- /dev/null +++ b/users/callum/callum.c @@ -0,0 +1,130 @@ +#include QMK_KEYBOARD_H + +#include "oneshot.h" +#include "swapper.h" + +#define HOME G(KC_LEFT) +#define END G(KC_RGHT) +#define FWD G(KC_RBRC) +#define BACK G(KC_LBRC) +#define TABL G(S(KC_LBRC)) +#define TABR G(S(KC_RBRC)) +#define SPCL A(G(KC_LEFT)) +#define SPCR A(G(KC_RGHT)) +#define LA_SYM MO(SYM) +#define LA_NAV MO(NAV) + +enum layers { + DEF, + SYM, + NAV, + NUM, +}; + +enum keycodes { + // Custom oneshot mod implementation with no timers. + OS_SHFT = SAFE_RANGE, + OS_CTRL, + OS_ALT, + OS_CMD, + + SW_WIN, // Switch to next window (cmd-tab) + SW_LANG, // Switch to next input language (ctl-spc) +}; + +const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = { + [DEF] = LAYOUT_callum( + KC_Q, KC_W, KC_F, KC_P, KC_G, KC_J, KC_L, KC_U, KC_Y, KC_QUOT, + KC_A, KC_R, KC_S, KC_T, KC_D, KC_H, KC_N, KC_E, KC_I, KC_O, + KC_Z, KC_X, KC_C, KC_V, KC_B, KC_K, KC_M, KC_COMM, KC_DOT, KC_SLSH, + LA_NAV, KC_LSFT, KC_SPC, LA_SYM + ), + + [SYM] = LAYOUT_callum( + KC_ESC, KC_LBRC, KC_LCBR, KC_LPRN, KC_TILD, KC_CIRC, KC_RPRN, KC_RCBR, KC_RBRC, KC_GRV, + KC_MINS, KC_ASTR, KC_EQL, KC_UNDS, KC_DLR, KC_HASH, OS_CMD, OS_ALT, OS_CTRL, OS_SHFT, + KC_PLUS, KC_PIPE, KC_AT, KC_BSLS, KC_PERC, XXXXXXX, KC_AMPR, KC_SCLN, KC_COLN, KC_EXLM, + _______, _______, _______, _______ + ), + + [NAV] = LAYOUT_callum( + KC_TAB, SW_WIN, TABL, TABR, KC_VOLU, RESET, HOME, KC_UP, END, KC_DEL, + OS_SHFT, OS_CTRL, OS_ALT, OS_CMD, KC_VOLD, KC_CAPS, KC_LEFT, KC_DOWN, KC_RGHT, KC_BSPC, + SPCL, SPCR, BACK, FWD, KC_MPLY, XXXXXXX, KC_PGDN, KC_PGUP, SW_LANG, KC_ENT, + _______, _______, _______, _______ + ), + + [NUM] = LAYOUT_callum( + KC_7, KC_5, KC_3, KC_1, KC_9, KC_8, KC_0, KC_2, KC_4, KC_6, + OS_SHFT, OS_CTRL, OS_ALT, OS_CMD, KC_F11, KC_F10, OS_CMD, OS_ALT, OS_CTRL, OS_SHFT, + KC_F7, KC_F5, KC_F3, KC_F1, KC_F9, KC_F8, KC_F12, KC_F2, KC_F4, KC_F6, + _______, _______, _______, _______ + ), +}; + +bool is_oneshot_cancel_key(uint16_t keycode) { + switch (keycode) { + case LA_SYM: + case LA_NAV: + return true; + default: + return false; + } +} + +bool is_oneshot_ignored_key(uint16_t keycode) { + switch (keycode) { + case LA_SYM: + case LA_NAV: + case KC_LSFT: + case OS_SHFT: + case OS_CTRL: + case OS_ALT: + case OS_CMD: + return true; + default: + return false; + } +} + +bool sw_win_active = false; +bool sw_lang_active = false; + +oneshot_state os_shft_state = os_up_unqueued; +oneshot_state os_ctrl_state = os_up_unqueued; +oneshot_state os_alt_state = os_up_unqueued; +oneshot_state os_cmd_state = os_up_unqueued; + +bool process_record_user(uint16_t keycode, keyrecord_t *record) { + update_swapper( + &sw_win_active, KC_LGUI, KC_TAB, SW_WIN, + keycode, record + ); + update_swapper( + &sw_lang_active, KC_LCTL, KC_SPC, SW_LANG, + keycode, record + ); + + update_oneshot( + &os_shft_state, KC_LSFT, OS_SHFT, + keycode, record + ); + update_oneshot( + &os_ctrl_state, KC_LCTL, OS_CTRL, + keycode, record + ); + update_oneshot( + &os_alt_state, KC_LALT, OS_ALT, + keycode, record + ); + update_oneshot( + &os_cmd_state, KC_LCMD, OS_CMD, + keycode, record + ); + + return true; +} + +layer_state_t layer_state_set_user(layer_state_t state) { + return update_tri_layer_state(state, SYM, NAV, NUM); +} diff --git a/users/callum/oneshot.c b/users/callum/oneshot.c new file mode 100644 index 00000000000..33ec3895e2d --- /dev/null +++ b/users/callum/oneshot.c @@ -0,0 +1,57 @@ +#include "oneshot.h" + +void update_oneshot( + oneshot_state *state, + uint16_t mod, + uint16_t trigger, + uint16_t keycode, + keyrecord_t *record +) { + if (keycode == trigger) { + if (record->event.pressed) { + // Trigger keydown + if (*state == os_up_unqueued) { + register_code(mod); + } + *state = os_down_unused; + } else { + // Trigger keyup + switch (*state) { + case os_down_unused: + // If we didn't use the mod while trigger was held, queue it. + *state = os_up_queued; + break; + case os_down_used: + // If we did use the mod while trigger was held, unregister it. + *state = os_up_unqueued; + unregister_code(mod); + break; + default: + break; + } + } + } else { + if (record->event.pressed) { + if (is_oneshot_cancel_key(keycode) && *state != os_up_unqueued) { + // Cancel oneshot on designated cancel keydown. + *state = os_up_unqueued; + unregister_code(mod); + } + } else { + if (!is_oneshot_ignored_key(keycode)) { + // On non-ignored keyup, consider the oneshot used. + switch (*state) { + case os_down_unused: + *state = os_down_used; + break; + case os_up_queued: + *state = os_up_unqueued; + unregister_code(mod); + break; + default: + break; + } + } + } + } +} diff --git a/users/callum/oneshot.h b/users/callum/oneshot.h new file mode 100644 index 00000000000..a6b8e17742a --- /dev/null +++ b/users/callum/oneshot.h @@ -0,0 +1,31 @@ +#pragma once + +#include QMK_KEYBOARD_H + +// Represents the four states a oneshot key can be in +typedef enum { + os_up_unqueued, + os_up_queued, + os_down_unused, + os_down_used, +} oneshot_state; + +// Custom oneshot mod implementation that doesn't rely on timers. If a mod is +// used while it is held it will be unregistered on keyup as normal, otherwise +// it will be queued and only released after the next non-mod keyup. +void update_oneshot( + oneshot_state *state, + uint16_t mod, + uint16_t trigger, + uint16_t keycode, + keyrecord_t *record +); + +// To be implemented by the consumer. Defines keys to cancel oneshot mods. +bool is_oneshot_cancel_key(uint16_t keycode); + +// To be implemented by the consumer. Defines keys to ignore when determining +// whether a oneshot mod has been used. Setting this to modifiers and layer +// change keys allows stacking multiple oneshot modifiers, and carrying them +// between layers. +bool is_oneshot_ignored_key(uint16_t keycode); diff --git a/users/callum/readme.md b/users/callum/readme.md new file mode 100644 index 00000000000..24b71038b6c --- /dev/null +++ b/users/callum/readme.md @@ -0,0 +1,99 @@ +A keymap for 34 keys with 4 layers and no mod-tap. + +![](https://raw.githubusercontent.com/callum-oakley/keymap/master/keymap.svg) + +## 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 diff --git a/users/callum/rules.mk b/users/callum/rules.mk new file mode 100644 index 00000000000..2d98e02c55b --- /dev/null +++ b/users/callum/rules.mk @@ -0,0 +1,3 @@ +SRC += callum.c +SRC += oneshot.c +SRC += swapper.c diff --git a/users/callum/swapper.c b/users/callum/swapper.c new file mode 100644 index 00000000000..736b2fef0c1 --- /dev/null +++ b/users/callum/swapper.c @@ -0,0 +1,27 @@ +#include "swapper.h" + +void update_swapper( + bool *active, + uint16_t cmdish, + uint16_t tabish, + uint16_t trigger, + uint16_t keycode, + keyrecord_t *record +) { + if (keycode == trigger) { + if (record->event.pressed) { + if (!*active) { + *active = true; + register_code(cmdish); + } + register_code(tabish); + } else { + unregister_code(tabish); + // Don't unregister cmdish until some other key is hit or released. + } + } else if (*active) { + unregister_code(cmdish); + *active = false; + } +} + diff --git a/users/callum/swapper.h b/users/callum/swapper.h new file mode 100644 index 00000000000..ad47fd96cec --- /dev/null +++ b/users/callum/swapper.h @@ -0,0 +1,20 @@ +#pragma once + +#include QMK_KEYBOARD_H + +// Implements cmd-tab like behaviour on a single key. On first tap of trigger +// cmdish is held and tabish is tapped -- cmdish then remains held until some +// other key is hit or released. For example: +// +// trigger, trigger, a -> cmd down, tab, tab, cmd up, a +// nav down, trigger, nav up -> nav down, cmd down, tab, cmd up, nav up +// +// This behaviour is useful for more than just cmd-tab, hence: cmdish, tabish. +void update_swapper( + bool *active, + uint16_t cmdish, + uint16_t tabish, + uint16_t trigger, + uint16_t keycode, + keyrecord_t *record +);