un-key/doc/Possible-key-values.md

Key values

A key value defines what a key on the keyboard does when pressed or swiped.

Key values appear in the following places:

• In custom layouts, they are the value of: the c attribute, the compass-point attributes nw ... se, and the old-style key0 ... key8 attributes.
• Internally, they are used in the definition of the "Add keys to the keyboard" setting.

Key values can be any of the following:

• The name of a special key. A complete list of valid special keys follows.

• An arbitrary sequence of characters not containing :. This results in a key that writes the specified characters.

• The syntax legend:key_def. legend is the visible legend on the keyboard. It cannot contain :. key_def can be:

  • The name of a special key, as listed below.
  • 'string' An arbitrary string that can contain :. ' can be added to the string as \'.
  • keyevent:keycode An Android keycode. They are listed as KEYCODE_... in KeyEvent.

  Examples:

  • ⏯:keyevent:85 A play/pause key (which has no effect in most apps).
  • my@:'my.email@domain.com' A key that sends an arbitrary string

• A macro, legend:key_def1,key_def2,.... This results in a key with legend legend that behaves as if the sequence of key_def had been pressed in order.

  Examples:

  • CA:ctrl,a,ctrl,c A key with legend CA that sends the sequence ctrl+a, ctrl+c.
  • Cd:ctrl,backspace A key with legend Cd that sends the shortcut ctrl+backspace.

Escape codes

When defining a key value, several characters have special effects. If you want a character not to have its usual effect but to be taken literally, you should "escape" it in the usual way for XML:

To get this character...	...you can type
A literal newline character, which is different from enter and action in certain apps.	\n
A literal tab character, which is different from tab in certain apps.	\t
&	&
<	&lt;
>	&gt;
"	&quot;

The characters \ (unless followed by n or t), ?, #, and @ do not need to be escaped when writing custom layouts. When writing a layout to be included in the app (in srcs/layouts), they are represented by typing \\, \?, \#, and \@.

The characters , and : can be escaped in a key value, using single quotes. For example, this macro defines a key with legend http that sends a string containing :: <key c="http:home,'https://'" /> For simplicity, , and : cannot be escaped in the key legend.

Modifiers

System modifiers are sent to the app, which can take app-specific action.

Value	Meaning
shift	System modifier.
ctrl	System modifier.
alt	System modifier.
meta	System modifier. Equivalent to the Windows key.

The other modifiers take effect only within the keyboard.

Value	Meaning
fn	Activates Fn mode, which assigns letters and symbols to special characters. Example: fn ! = ¡
compose	Compose key. Enables composing characters using Linux-like shortcuts. Example: Compose A ' types Á (A with acute accent).
capslock	Activates and locks Shift.

App function keys

These keys are sent to apps, which are free to ignore them. The keyboard does not perform editing in response to these keys.

esc, enter, up, right, down, left, page_up, page_down, home, end, backspace, delete, insert, scroll_lock, f1-f12, tab, copy, paste, cut, selectAll, pasteAsPlainText, undo, redo

Keyboard editing actions

In contrast, these keys perform editing on the text without sending anything to the app.

Value	Meaning
cursor_left	Moves the cursor to the left with the slider gesture.
cursor_right	Moves the cursor to the right with the slider gesture.
cursor_up	Moves the cursor up with the slider gesture. Warning: this might make the cursor leave the text box.
cursor_down	Moves the cursor down with the slider gesture. Warning: this might make the cursor leave the text box.
delete_word	Delete the word to the left of the cursor.
forward_delete_word	Delete the word to the right of the cursor.

The values with cursor_ are new in v1.31.0. Previous custom layouts specified the slider with slider="true", which should be removed.

Whitespace

Value	Meaning
space	Space bar.
nbsp	Non-breaking space.
nnbsp	Narrow non-breaking space.
zwj	Zero-width joiner.
zwnj	Zero-width non-joiner.

Other modifiers and diacritics

Value	Meaning
accent_aigu	Acute accent. á
accent_caron	Háček. č
accent_cedille	Cedilla. ç
accent_circonflexe	Circumflex. â
accent_grave	Grave accent. à
accent_macron	Macron. ā
accent_ring	Ring accent. å
accent_tilde	Tilde. ã
accent_trema	Dieresis/umlaut. ä
accent_ogonek	Ogonek. ą
accent_dot_above	Dot accent. ż If applied to the lowercase i, removes the dot instead for Turkish. ı
accent_double_aigu	Double acute accent. ő
accent_slash	Slash through. ø
accent_arrow_right	Right arrow above, used to denote a vector. a⃗
accent_breve	Breve. ă
accent_bar	Bar/strikethrough. ɨ
accent_dot_below	Dot below. ạ
accent_horn	Horn accent. ơ
accent_hook_above	Hook accent. ả
accent_double_grave	Double grave accent. ȁ
superscript	Superscript. ᵃ
subscript	Subscript. ₐ
ordinal	Turns a and o into ª and º.
arrows	Turns 1-4 and 6-9 into arrows.
box	Turns 1-9, 0, and . into single-line, thin box-drawing characters.

Bidirectional

Value	Meaning
lrm	Left-to-right mark.
rlm	Right-to-left mark.
b(, b), b[, b], b{, b}, blt, bgt	Sends the bracket characters, but with mirrored key legends for right-to-left languages. (blt and bgt print < and > respectively.)

Hebrew

Keys ending in _placeholder are normally hidden unless the Fn key is pressed.

qamats, patah, sheva, dagesh, hiriq, segol, tsere, holam, qubuts, hataf_patah, hataf_qamats, hataf_segol, shindot, shindot_placeholder, sindot, sindot_placeholder, geresh, gershayim, maqaf, rafe, ole, ole_placeholder, meteg, meteg_placeholder

Keyboard behavior keys

Value	Meaning
config	Gear icon; opens Unexpected Keyboard settings.
switch_text	Switch to the text layer (main layer).
switch_numeric	Switch to the numeric layer.
switch_emoji	Switch to the emoji layer.
switch_back_emoji	Switch to the text layer from the emoji layer.
switch_forward	Change the keyboard layout, as long as Unexpected Keyboard has multiple keyboard layouts enabled in the settings.
switch_backward	Change the keyboard layout to the previous one in the list.
switch_greekmath	Switch to the Greek & Math Symbols layer.
switch_clipboard	Switch to the clipboard pane.
change_method	Open the input method picker dialog.
change_method_prev	Switch to the previously used input method.
action	Performs a special context-sensitive operation related to the Enter key. For example, in the Twitter (X) app, enter adds a new line, while action posts.
voice_typing	Begin voice typing.
voice_typing_chooser	Shows a menu where you can choose which voice typing provider to use, then begins voice typing when you make a selection.
shareText	Emit a share Intent for the selected text. Oddity: This is in CamelCase.

Unused

These keys are known to do nothing.

replaceText, textAssist, autofill, removed

Placeholders

These keys are normally hidden unless the Fn modifier is activated.

f11_placeholder | f12_placeholder