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266
users/smathev/casemodes.c
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266
users/smathev/casemodes.c
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/* Copyright 2021 Andrew Rae ajrae.nv@gmail.com @andrewjrae
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "casemodes.h"
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/* The caps word concept started with me @iaap on splitkb.com discord.
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* However it has been implemented and extended by many splitkb.com users:
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* - @theol0403 made many improvements to initial implementation
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* - @precondition used caps lock rather than shifting
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* - @dnaq his own implementation which also used caps lock
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* - @sevanteri added underscores on spaces
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* - @metheon extended on @sevanteri's work and added specific modes for
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* snake_case and SCREAMING_SNAKE_CASE
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* - @baffalop came up with the idea for xcase, which he implements in his own
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* repo, however this is implemented by @iaap with support also for one-shot-shift.
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* - @sevanteri
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* - fixed xcase waiting mode to allow more modified keys and keys from other layers.
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* - Added @baffalop's separator defaulting on first keypress, with a
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* configurable default separator and overrideable function to determine
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* if the default should be used.
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*/
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#ifndef DEFAULT_XCASE_SEPARATOR
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#define DEFAULT_XCASE_SEPARATOR KC_UNDS
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#endif
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#define IS_OSM(keycode) (keycode >= QK_ONE_SHOT_MOD && keycode <= QK_ONE_SHOT_MOD_MAX)
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// bool to keep track of the caps word state
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static bool caps_word_on = false;
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// enum to keep track of the xcase state
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static enum xcase_state xcase_state = XCASE_OFF;
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// the keycode of the xcase delimiter
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static uint16_t xcase_delimiter;
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// the number of keys to the last delimiter
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static int8_t distance_to_last_delim = -1;
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// Check whether caps word is on
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bool caps_word_enabled(void) {
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return caps_word_on;
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}
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// Enable caps word
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void enable_caps_word(void) {
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caps_word_on = true;
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#ifndef CAPSWORD_USE_SHIFT
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if (!host_keyboard_led_state().caps_lock) {
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tap_code(KC_CAPS);
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}
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#endif
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}
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// Disable caps word
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void disable_caps_word(void) {
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caps_word_on = false;
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#ifndef CAPSWORD_USE_SHIFT
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if (host_keyboard_led_state().caps_lock) {
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tap_code(KC_CAPS);
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}
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#else
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unregister_mods(MOD_LSFT);
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#endif
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}
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// Toggle caps word
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void toggle_caps_word(void) {
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if (caps_word_on) {
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disable_caps_word();
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}
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else {
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enable_caps_word();
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}
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}
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// Get xcase state
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enum xcase_state get_xcase_state(void) {
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return xcase_state;
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}
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// Enable xcase and pickup the next keystroke as the delimiter
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void enable_xcase(void) {
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xcase_state = XCASE_WAIT;
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}
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// Enable xcase with the specified delimiter
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void enable_xcase_with(uint16_t delimiter) {
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xcase_state = XCASE_ON;
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xcase_delimiter = delimiter;
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distance_to_last_delim = -1;
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}
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// Disable xcase
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void disable_xcase(void) {
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xcase_state = XCASE_OFF;
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}
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// Place the current xcase delimiter
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static void place_delimiter(void) {
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if (IS_OSM(xcase_delimiter)) {
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// apparently set_oneshot_mods() is dumb and doesn't deal with handedness for you
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uint8_t mods = xcase_delimiter & 0x10 ? (xcase_delimiter & 0x0F) << 4 : xcase_delimiter & 0xFF;
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set_oneshot_mods(mods);
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} else {
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tap_code16(xcase_delimiter);
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}
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}
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// Removes a delimiter, used for double tap space exit
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static void remove_delimiter(void) {
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if (IS_OSM(xcase_delimiter)) {
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clear_oneshot_mods();
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} else {
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tap_code(KC_BSPC);
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}
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}
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// overrideable function to determine whether the case mode should stop
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__attribute__ ((weak))
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bool terminate_case_modes(uint16_t keycode, const keyrecord_t *record) {
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switch (keycode) {
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// Keycodes to ignore (don't disable caps word)
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case KC_A ... KC_Z:
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case KC_1 ... KC_0:
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case KC_MINS:
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case KC_UNDS:
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case KC_BSPC:
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case DK_ARNG:
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case DK_OSTR:
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case DK_AE:
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// If mod chording disable the mods
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if (record->event.pressed && (get_mods() != 0)) {
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return true;
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}
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break;
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default:
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if (record->event.pressed) {
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return true;
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}
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break;
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}
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return false;
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}
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/* overrideable function to determine whether to use the default separator on
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* first keypress when waiting for the separator. */
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__attribute__ ((weak))
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bool use_default_xcase_separator(uint16_t keycode, const keyrecord_t *record) {
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// for example:
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/* switch (keycode) { */
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/* case KC_A ... KC_Z: */
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/* case KC_1 ... KC_0: */
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/* return true; */
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/* } */
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return false;
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}
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bool process_case_modes(uint16_t keycode, const keyrecord_t *record) {
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if (caps_word_on || xcase_state) {
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if ((QK_MOD_TAP <= keycode && keycode <= QK_MOD_TAP_MAX)
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|| (QK_LAYER_TAP <= keycode && keycode <= QK_LAYER_TAP_MAX)) {
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// Earlier return if this has not been considered tapped yet
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if (record->tap.count == 0)
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return true;
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keycode = keycode & 0xFF;
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}
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if (keycode >= QK_LAYER_TAP && keycode <= QK_ONE_SHOT_LAYER_MAX) {
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// let special keys and normal modifiers go through
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return true;
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}
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if (xcase_state == XCASE_WAIT) {
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// grab the next input to be the delimiter
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if (use_default_xcase_separator(keycode, record)) {
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enable_xcase_with(DEFAULT_XCASE_SEPARATOR);
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}
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else if (record->event.pressed) {
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// factor in mods
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if (get_mods() & MOD_MASK_SHIFT) {
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keycode = LSFT(keycode);
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}
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else if (get_mods() & MOD_BIT(KC_RALT)) {
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keycode = RALT(keycode);
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}
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enable_xcase_with(keycode);
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return false;
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}
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else {
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if (IS_OSM(keycode)) {
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// this catches the OSM release if no other key was pressed
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set_oneshot_mods(0);
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enable_xcase_with(keycode);
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return false;
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}
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// let other special keys go through
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return true;
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}
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}
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if (record->event.pressed) {
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// handle xcase mode
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if (xcase_state == XCASE_ON) {
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// place the delimiter if space is tapped
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if (keycode == KC_SPACE) {
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if (distance_to_last_delim != 0) {
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place_delimiter();
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distance_to_last_delim = 0;
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return false;
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}
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// remove the delimiter and disable modes
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else {
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remove_delimiter();
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disable_xcase();
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disable_caps_word();
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return true;
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}
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}
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// decrement distance to delimiter on back space
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else if (keycode == KC_BSPC) {
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--distance_to_last_delim;
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}
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// don't increment distance to last delim if negative
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else if (distance_to_last_delim >= 0) {
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// puts back a one shot delimiter if you we're back to the delimiter pos
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if (distance_to_last_delim == 0 && (IS_OSM(xcase_delimiter))) {
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place_delimiter();
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}
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++distance_to_last_delim;
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}
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} // end XCASE_ON
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// check if the case modes have been terminated
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if (terminate_case_modes(keycode, record)) {
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disable_caps_word();
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disable_xcase();
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}
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#ifdef CAPSWORD_USE_SHIFT
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else if (keycode >= KC_A && keycode <= KC_Z){
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tap_code16(LSFT(keycode));
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return false;
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}
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#endif
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} // end if event.pressed
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return true;
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}
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return true;
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}
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