- Make thumb-accessible ⌥ and ⌃ into right-⌥ and right-⌃

- remove media-space and media-shift-space; put a play/pause key at media-m instead
- add print screen, scroll lock, and pause/break to the media layer

And in the readme:

- don't say we don't have any Windows-specific keys
- add mnemonics for thumb-alt and thumb-ctrl positioning

keyboards/ergodox/keymaps/zweihander-osx/keymap.c

@@ -32,7 +32,7 @@ const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
  *                                 ,------|------|------|       |------+--------+------.
  *                                 |      |      | PgUp |       | PgDn |        |      |
  *                                 |      |   ⇥  |------|       |------|    ⇥   |Enter |
- *                                 |      |      |  L⌥  |       |  L⌃  |        |      |
+ *                                 |      |      |  R⌥  |       |  R⌃  |        |      |
  *                                 `--------------------'       `----------------------'
  */
 // If it accepts an argument (i.e, is a function), it doesn't need KC_.
@@ -46,7 +46,7 @@ const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
         KC_LCTL,        KC_LALT,      KC_LGUI,KC_LEFT,KC_RGHT,
                                               KC_GRV, KC_QUOT,
                                                               KC_PGUP,
-                                               KC_SPC,KC_TAB ,KC_LALT,
+                                               KC_SPC,KC_TAB ,KC_RALT,
         // right hand
              TG(SYMB),  KC_6,   KC_7,   KC_8,   KC_9,   KC_0,             KC_MINS,
              MO(SYMB),  KC_Y,   KC_U,   KC_I,   KC_O,   KC_P,             KC_BSLS,
@@ -55,7 +55,7 @@ const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
                                 KC_UP,  KC_DOWN,KC_LBRC,KC_RBRC,          KC_SPC ,
              KC_ESC,            KC_BSPC,
              KC_PGDN,
-             KC_LCTL,           KC_TAB,      KC_ENT
+             KC_RCTL,           KC_TAB,      KC_ENT
     ),
 /* Keymap 1: Symbol Layer
  *
@@ -102,13 +102,13 @@ const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
 /* Keymap 2: Media keys
  *
  * ,--------------------------------------------------.           ,--------------------------------------------------.
- * |        |  F14 |  F15 |      |      |      |      |           |  ⌘Q  |  ⌘W  | ⌘⇧`  |  ⌘`  |      |      |  Power |
+ * |        |  F14 |  F15 |PrtScr|SclLck| Pause|      |           |  ⌘Q  |  ⌘W  | ⌘⇧`  |  ⌘`  |      |      |  Power |
  * |--------+------+------+------+------+-------------|           |------+------+------+------+------+------+--------|
  * |        |      |      | PgUp |⌘S⌘⇥⌘R| Term |      |           |      |  ⌘]  | ⌥⌘↑  |   ↑  | ⌥⌘↓  |      |        |
  * |--------+------+------+------+------+------|      |           |      |------+------+------+------+------+--------|
  * |        |      |Safari| PgDn |      |      |------|           |------|  ⌘[  |   ←  |   ↓  |   →  |      |    ⏯  |
  * |--------+------+------+------+------+------|      |           |      |------+------+------+------+------+--------|
- * |        |      |      |      |      |BBEdit|      |           |      |L⇧+Spc|  Spc |  ⏮  |   ⏭ |      |        |
+ * |        |      |      |      |      |BBEdit|      |           |      |      |  ⏯  |  ⏮  |   ⏭ |      |        |
  * `--------+------+------+------+------+-------------'           `-------------+------+------+------+------+--------'
  *   |      |      |      |      |      |                                       |VolUp |VolDn | Mute |      |      |
  *   `----------------------------------'                                       `----------------------------------'
@@ -122,7 +122,7 @@ const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
  */
 // MEDIA AND MOUSE
 [MDIA] = KEYMAP(
-       KC_TRNS, KC_F14 , KC_F15 , KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS,  /* F14 dims screen, F15 brightens */
+       KC_TRNS, KC_F14 , KC_F15 , KC_PSCR, KC_SLCK, KC_PAUS, KC_TRNS,  /* F14 dims screen, F15 brightens */
        KC_TRNS, KC_TRNS, KC_TRNS, KC_PGUP, M(SGWF), M(TMNL), KC_TRNS,
        KC_TRNS, KC_TRNS, M(SAFA), KC_PGDN, KC_TRNS, KC_TRNS,
        KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, M(BBED), KC_TRNS,
@@ -134,7 +134,7 @@ const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
        LGUI(KC_Q),  LGUI(KC_W),     LGUI(LSFT(KC_GRV)), LGUI(KC_GRV),   KC_TRNS,                KC_TRNS,        KC_PWR ,
        KC_TRNS,     LGUI(KC_RBRC),  LGUI(LALT(KC_UP)),  KC_UP  ,        LGUI(LALT(KC_DOWN)),    KC_TRNS,        KC_TRNS,
                     LGUI(KC_LBRC),  KC_LEFT,            KC_DOWN,        KC_RGHT,                KC_TRNS,        KC_MPLY,
-       KC_TRNS,     LSFT(KC_SPC),   KC_SPC ,            KC_MPRV,        KC_MNXT,                KC_TRNS,        KC_TRNS,
+       KC_TRNS,     KC_TRNS,        KC_MPLY,            KC_MPRV,        KC_MNXT,                KC_TRNS,        KC_TRNS,
                                     KC_VOLU,            KC_VOLD,        KC_MUTE,                KC_TRNS,        KC_TRNS,
        KC_TRNS,     KC_TRNS,
        KC_END ,

keyboards/ergodox/keymaps/zweihander-osx/readme.markdown

@@ -7,7 +7,7 @@ This layout is tuned for people who…
 
 ## use OS X
 
-This layout doesn’t make any concessions for Windows use. While it should work fine in Windows, I’m not about to devote precious keyboard space to Windows-specific shortcuts.
+While this layout should work fine in Windows, it’s not tuned for it. No sane person who primarily uses Windows would put this many Windows keys on a keyboard layout.
 
 
 ## mouse left-handed while doing other things with the right hand
@@ -21,8 +21,6 @@ I tend to have my mouse in my left hand, but I like to use my other hand to make
 - Go Up and Close Just-Left Folder (⌥⌘↑)
 - Cycle through open windows in current application (⌘\` and ⌘⇧\`)
 - Cycle through tabs in current window (⌥⇥ and ⌥⇧⇥)
-- Space (page down in browsers; Quick Look in the Finder)
-- Shift-Space (page up in web browsers)
 
 Because moving letter-by-letter is way slower than moving word-by-word, I added Option (⌥) to the bottommost button on the left side. This key can be held easily while holding ; (activate media layer) and pressing J and L to move left and right by word.
 
@@ -34,11 +32,15 @@ I wanted to preserve the feel of a number of shortcuts that involve pressing lot
 - Empty Trash Without Asking for Confirmation (⇧⌥⌘⌫)
 - Shut Down Without Asking for Confirmation (⇧⌥⌘ power)
 
+⇧⌥⌘⌫, when you press the backspace on the right half of the keyboard, is much more satisfying than if you curl your left hand into a claw to press all the keys on the left. Try both; you’ll agree.
+
 
 ## use Emacs-style shortcuts
 
 I press C-a, C-e, and C-k all the time. It’s difficult to press these key combinations with the control key on the bottom left and I’m too quick on the draw for the control function on the / key to work reliably, so the bottommost thumb button on the right side is another control key.
 
+Having trouble remembering which thumb key is alt and which is ctrl? It’s like on the lower right of a normal keyboard — leftmost is alt, rightmost is ctrl.
+
 
 ## use spreadsheets