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<main>
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<h2 id="key-remapping"><a class="header" href="#key-remapping">Key remapping</a></h2>
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<p>Helix currently supports one-way key remapping through a simple TOML configuration
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file. (More powerful solutions such as rebinding via commands will be
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available in the future).</p>
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<p>There are three kinds of commands that can be used in keymaps:</p>
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<ul>
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<li>Static commands: commands like <code>move_char_right</code> which are usually bound to
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keys and used for movement and editing. A list of static commands is
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available in the <a href="./keymap.html">Keymap</a> documentation and in the source code
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in <a href="https://github.com/helix-editor/helix/blob/master/helix-term/src/commands.rs"><code>helix-term/src/commands.rs</code></a>
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at the invocation of <code>static_commands!</code> macro.</li>
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<li>Typable commands: commands that can be executed from command mode (<code>:</code>), for
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example <code>:write!</code>. See the <a href="./commands.html">Commands</a> documentation for a
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list of available typeable commands or the <code>TypableCommandList</code> declaration in
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the source code at <a href="https://github.com/helix-editor/helix/blob/master/helix-term/src/commands/typed.rs"><code>helix-term/src/commands/typed.rs</code></a>.</li>
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<li>Macros: sequences of keys that are executed in order. These keybindings
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start with <code>@</code> and then list any number of keys to be executed. For example
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<code>@miw</code> can be used to select the surrounding word. For now, macro keybindings
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are not allowed in keybinding sequences due to limitations in the way that
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command sequences are executed. Modifier keys (e.g. Alt+o) can be used
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like <code>"<A-o>"</code>, e.g. <code>"@miw<A-o>"</code></li>
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</ul>
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<p>To remap keys, create a <code>config.toml</code> file in your <code>helix</code> configuration
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directory (default <code>~/.config/helix</code> on Linux systems) with a structure like
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this:</p>
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<blockquote>
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<p>💡 To set a modifier + key as a keymap, type <code>A-X = ...</code> or <code>C-X = ...</code> for Alt + X or Ctrl + X. Combine with Shift using a dash, e.g. <code>C-S-esc</code>.
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Within macros, wrap them in <code><></code>, e.g. <code><A-X></code> and <code><C-X></code> to distinguish from the <code>A</code> or <code>C</code> keys.</p>
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</blockquote>
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<pre><code class="language-toml"># At most one section each of 'keys.normal', 'keys.insert' and 'keys.select'
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[keys.normal]
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C-s = ":w" # Maps Ctrl-s to the typable command :w which is an alias for :write (save file)
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C-o = ":open ~/.config/helix/config.toml" # Maps Ctrl-o to opening of the helix config file
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a = "move_char_left" # Maps the 'a' key to the move_char_left command
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w = "move_line_up" # Maps the 'w' key move_line_up
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"C-S-esc" = "extend_line" # Maps Ctrl-Shift-Escape to extend_line
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g = { a = "code_action" } # Maps `ga` to show possible code actions
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"ret" = ["open_below", "normal_mode"] # Maps the enter key to open_below then re-enter normal mode
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"A-x" = "@x<A-d>" # Maps Alt-x to a macro selecting the whole line and deleting it without yanking it
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[keys.insert]
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"A-x" = "normal_mode" # Maps Alt-X to enter normal mode
|
||
j = { k = "normal_mode" } # Maps `jk` to exit insert mode
|
||
</code></pre>
|
||
<h2 id="minor-modes"><a class="header" href="#minor-modes">Minor modes</a></h2>
|
||
<p>Minor modes are accessed by pressing a key (usually from normal mode), giving access to dedicated bindings. Bindings
|
||
can be modified or added by nesting definitions.</p>
|
||
<pre><code class="language-toml">[keys.insert.j]
|
||
k = "normal_mode" # Maps `jk` to exit insert mode
|
||
|
||
[keys.normal.g]
|
||
a = "code_action" # Maps `ga` to show possible code actions
|
||
|
||
# invert `j` and `k` in view mode
|
||
[keys.normal.z]
|
||
j = "scroll_up"
|
||
k = "scroll_down"
|
||
|
||
# create a new minor mode bound to `+`
|
||
[keys.normal."+"]
|
||
m = ":run-shell-command make"
|
||
c = ":run-shell-command cargo build"
|
||
t = ":run-shell-command cargo test"
|
||
</code></pre>
|
||
<h2 id="special-keys-and-modifiers"><a class="header" href="#special-keys-and-modifiers">Special keys and modifiers</a></h2>
|
||
<p>Ctrl, Shift and Alt modifiers are encoded respectively with the prefixes <code>C-</code>, <code>S-</code> and <code>A-</code>.</p>
|
||
<p>The <a href="https://en.wikipedia.org/wiki/Super_key_(keyboard_button)">Super key</a> - the Windows/Linux
|
||
key or the Command key on Mac keyboards - is also supported when using a terminal emulator that
|
||
supports the <a href="https://github.com/helix-editor/helix/wiki/Terminal-Support#enhanced-keyboard-protocol">enhanced keyboard protocol</a>.
|
||
The super key is encoded with prefixes <code>Meta-</code>, <code>Cmd-</code> or <code>Win-</code>. These are all synonyms for the
|
||
super modifier - binding a key with a <code>Win-</code> modifier will mean it can be used with the
|
||
Windows/Linux key or the Command key.</p>
|
||
<pre><code class="language-toml">[keys.normal]
|
||
C-s = ":write" # Ctrl and 's' to write
|
||
Cmd-s = ":write" # Cmd or Win or Meta and 's' to write
|
||
</code></pre>
|
||
<p>Special keys are encoded as follows:</p>
|
||
<div class="table-wrapper">
|
||
<table>
|
||
<thead>
|
||
<tr><th>Key name</th><th>Representation</th></tr>
|
||
</thead>
|
||
<tbody>
|
||
<tr><td>Backspace</td><td><code>"backspace"</code></td></tr>
|
||
<tr><td>Space</td><td><code>"space"</code></td></tr>
|
||
<tr><td>Return/Enter</td><td><code>"ret"</code></td></tr>
|
||
<tr><td>Left</td><td><code>"left"</code></td></tr>
|
||
<tr><td>Right</td><td><code>"right"</code></td></tr>
|
||
<tr><td>Up</td><td><code>"up"</code></td></tr>
|
||
<tr><td>Down</td><td><code>"down"</code></td></tr>
|
||
<tr><td>Home</td><td><code>"home"</code></td></tr>
|
||
<tr><td>End</td><td><code>"end"</code></td></tr>
|
||
<tr><td>Page Up</td><td><code>"pageup"</code></td></tr>
|
||
<tr><td>Page Down</td><td><code>"pagedown"</code></td></tr>
|
||
<tr><td>Tab</td><td><code>"tab"</code></td></tr>
|
||
<tr><td>Delete</td><td><code>"del"</code></td></tr>
|
||
<tr><td>Insert</td><td><code>"ins"</code></td></tr>
|
||
<tr><td>Null</td><td><code>"null"</code></td></tr>
|
||
<tr><td>Escape</td><td><code>"esc"</code></td></tr>
|
||
<tr><td>Less Than (<)</td><td><code>"lt"</code></td></tr>
|
||
<tr><td>Greater Than (>)</td><td><code>"gt"</code></td></tr>
|
||
</tbody>
|
||
</table>
|
||
</div>
|
||
<p>Keys can be disabled by binding them to the <code>no_op</code> command.</p>
|
||
<p>All other keys such as <code>?</code>, <code>!</code>, <code>-</code> etc. can be used literally:</p>
|
||
<pre><code class="language-toml">[keys.normal]
|
||
"?" = ":write"
|
||
"!" = ":write"
|
||
"-" = ":write"
|
||
</code></pre>
|
||
<p>Note: <code>-</code> can’t be used when combined with a modifier, for example <code>Alt</code> + <code>-</code> should be written as <code>A-minus</code>. <code>A--</code> is not accepted.</p>
|
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