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318 lines
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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>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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<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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[keys.insert]
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"A-x" = "normal_mode" # Maps Alt-X to enter normal mode
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j = { k = "normal_mode" } # Maps `jk` to exit insert mode
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</code></pre>
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<h2 id="minor-modes"><a class="header" href="#minor-modes">Minor modes</a></h2>
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<p>Minor modes are accessed by pressing a key (usually from normal mode), giving access to dedicated bindings. Bindings
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can be modified or added by nesting definitions.</p>
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<pre><code class="language-toml">[keys.insert.j]
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k = "normal_mode" # Maps `jk` to exit insert mode
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[keys.normal.g]
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a = "code_action" # Maps `ga` to show possible code actions
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# invert `j` and `k` in view mode
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[keys.normal.z]
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j = "scroll_up"
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k = "scroll_down"
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# create a new minor mode bound to `+`
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[keys.normal."+"]
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m = ":run-shell-command make"
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c = ":run-shell-command cargo build"
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t = ":run-shell-command cargo test"
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</code></pre>
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<h2 id="special-keys-and-modifiers"><a class="header" href="#special-keys-and-modifiers">Special keys and modifiers</a></h2>
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<p>Ctrl, Shift and Alt modifiers are encoded respectively with the prefixes
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<code>C-</code>, <code>S-</code> and <code>A-</code>. Special keys are encoded as follows:</p>
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<div class="table-wrapper"><table><thead><tr><th>Key name</th><th>Representation</th></tr></thead><tbody>
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<tr><td>Backspace</td><td><code>"backspace"</code></td></tr>
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<tr><td>Space</td><td><code>"space"</code></td></tr>
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<tr><td>Return/Enter</td><td><code>"ret"</code></td></tr>
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<tr><td>-</td><td><code>"minus"</code></td></tr>
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<tr><td>Left</td><td><code>"left"</code></td></tr>
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<tr><td>Right</td><td><code>"right"</code></td></tr>
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<tr><td>Up</td><td><code>"up"</code></td></tr>
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<tr><td>Down</td><td><code>"down"</code></td></tr>
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<tr><td>Home</td><td><code>"home"</code></td></tr>
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<tr><td>End</td><td><code>"end"</code></td></tr>
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<tr><td>Page Up</td><td><code>"pageup"</code></td></tr>
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<tr><td>Page Down</td><td><code>"pagedown"</code></td></tr>
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<tr><td>Tab</td><td><code>"tab"</code></td></tr>
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<tr><td>Delete</td><td><code>"del"</code></td></tr>
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<tr><td>Insert</td><td><code>"ins"</code></td></tr>
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<tr><td>Null</td><td><code>"null"</code></td></tr>
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<tr><td>Escape</td><td><code>"esc"</code></td></tr>
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</tbody></table>
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</div>
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<p>Keys can be disabled by binding them to the <code>no_op</code> command.</p>
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<h2 id="commands"><a class="header" href="#commands">Commands</a></h2>
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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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