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<ol class="chapter"><li class="chapter-item expanded "><a href="install.html"><strong aria-hidden="true">1.</strong> Installation</a></li><li class="chapter-item expanded "><a href="usage.html"><strong aria-hidden="true">2.</strong> Usage</a></li><li class="chapter-item expanded "><a href="from-vim.html"><strong aria-hidden="true">3.</strong> Migrating from Vim</a></li><li class="chapter-item expanded "><a href="configuration.html"><strong aria-hidden="true">4.</strong> Configuration</a></li><li><ol class="section"><li class="chapter-item expanded "><a href="themes.html" class="active"><strong aria-hidden="true">4.1.</strong> Themes</a></li><li class="chapter-item expanded "><a href="keymap.html"><strong aria-hidden="true">4.2.</strong> Keymap</a></li><li class="chapter-item expanded "><a href="remapping.html"><strong aria-hidden="true">4.3.</strong> Key Remapping</a></li><li class="chapter-item expanded "><a href="hooks.html"><strong aria-hidden="true">4.4.</strong> Hooks</a></li></ol></li></ol> </div>
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<h1 id="themes"><a class="header" href="#themes">Themes</a></h1>
<p>First you'll need to place selected themes in your <code>themes</code> directory (i.e <code>~/.config/helix/themes</code>), the directory might have to be created beforehand.</p>
<p>To use a custom theme add <code>theme = &lt;name&gt;</code> to your <a href="./configuration.html"><code>config.toml</code></a> or override it during runtime using <code>:theme &lt;name&gt;</code>.</p>
<p>The default theme.toml can be found <a href="https://github.com/helix-editor/helix/blob/master/theme.toml">here</a>, and user submitted themes <a href="https://github.com/helix-editor/helix/blob/master/runtime/themes">here</a>. </p>
<h2 id="creating-a-theme"><a class="header" href="#creating-a-theme">Creating a theme</a></h2>
<p>First create a file with the name of your theme as file name (i.e <code>mytheme.toml</code>) and place it in your <code>themes</code> directory (i.e <code>~/.config/helix/themes</code>).</p>
<p>Each line in the theme file is specified as below:</p>
<pre><code class="language-toml">key = { fg = &quot;#ffffff&quot;, bg = &quot;#000000&quot;, modifiers = [&quot;bold&quot;, &quot;italic&quot;] }
</code></pre>
<p>where <code>key</code> represents what you want to style, <code>fg</code> specifies the foreground color, <code>bg</code> the background color, and <code>modifiers</code> is a list of style modifiers. <code>bg</code> and <code>modifiers</code> can be omitted to defer to the defaults.</p>
<p>To specify only the foreground color:</p>
<pre><code class="language-toml">key = &quot;#ffffff&quot;
</code></pre>
<p>if the key contains a dot <code>'.'</code>, it must be quoted to prevent it being parsed as a <a href="https://toml.io/en/v1.0.0#keys">dotted key</a>.</p>
<pre><code class="language-toml">&quot;key.key&quot; = &quot;#ffffff&quot;
</code></pre>
<h3 id="color-palettes"><a class="header" href="#color-palettes">Color palettes</a></h3>
<p>It's recommended define a palette of named colors, and refer to them from the
configuration values in your theme. To do this, add a table called
<code>palette</code> to your theme file:</p>
<pre><code class="language-toml">ui.background = &quot;white&quot;
ui.text = &quot;black&quot;
[palette]
white = &quot;#ffffff&quot;
black = &quot;#000000&quot;
</code></pre>
<p>Remember that the <code>[palette]</code> table includes all keys after its header,
so you should define the palette after normal theme options.</p>
<p>The default palette uses the terminal's default 16 colors, and the colors names
are listed below. The <code>[palette]</code> section in the config file takes precedence
over it and is merged into the default palette.</p>
<table><thead><tr><th>Color Name</th></tr></thead><tbody>
<tr><td><code>black</code></td></tr>
<tr><td><code>red</code></td></tr>
<tr><td><code>green</code></td></tr>
<tr><td><code>yellow</code></td></tr>
<tr><td><code>blue</code></td></tr>
<tr><td><code>magenta</code></td></tr>
<tr><td><code>cyan</code></td></tr>
<tr><td><code>gray</code></td></tr>
<tr><td><code>light-red</code></td></tr>
<tr><td><code>light-green</code></td></tr>
<tr><td><code>light-yellow</code></td></tr>
<tr><td><code>light-blue</code></td></tr>
<tr><td><code>light-magenta</code></td></tr>
<tr><td><code>light-cyan</code></td></tr>
<tr><td><code>light-gray</code></td></tr>
<tr><td><code>white</code></td></tr>
</tbody></table>
<h3 id="modifiers"><a class="header" href="#modifiers">Modifiers</a></h3>
<p>The following values may be used as modifiers. </p>
<p>Less common modifiers might not be supported by your terminal emulator.</p>
<table><thead><tr><th>Modifier</th></tr></thead><tbody>
<tr><td><code>bold</code></td></tr>
<tr><td><code>dim</code></td></tr>
<tr><td><code>italic</code></td></tr>
<tr><td><code>underlined</code></td></tr>
<tr><td><code>slow_blink</code></td></tr>
<tr><td><code>rapid_blink</code></td></tr>
<tr><td><code>reversed</code></td></tr>
<tr><td><code>hidden</code></td></tr>
<tr><td><code>crossed_out</code></td></tr>
</tbody></table>
<h3 id="scopes"><a class="header" href="#scopes">Scopes</a></h3>
<p>The following is a list of scopes available to use for styling.</p>
<h4 id="syntax-highlighting"><a class="header" href="#syntax-highlighting">Syntax highlighting</a></h4>
<p>These keys match <a href="https://tree-sitter.github.io/tree-sitter/syntax-highlighting#theme">tree-sitter scopes</a>.</p>
<p>For a given highlight produced, styling will be determined based on the longest matching theme key. For example, the highlight <code>function.builtin.static</code> would match the key <code>function.builtin</code> rather than <code>function</code>.</p>
<p>We use a similar set of scopes as
<a href="https://www.sublimetext.com/docs/scope_naming.html">SublimeText</a>. See also
<a href="https://macromates.com/manual/en/language_grammars">TextMate</a> scopes.</p>
<ul>
<li>
<p><code>escape</code> (TODO: rename to (constant).character.escape)</p>
</li>
<li>
<p><code>type</code> - Types</p>
<ul>
<li><code>builtin</code> - Primitive types provided by the language (<code>int</code>, <code>usize</code>)</li>
</ul>
</li>
<li>
<p><code>constant</code> (TODO: constant.other.placeholder for %v)</p>
<ul>
<li><code>builtin</code> Special constants provided by the language (<code>true</code>, <code>false</code>, <code>nil</code> etc)
<ul>
<li><code>boolean</code></li>
</ul>
</li>
<li><code>character</code></li>
</ul>
</li>
<li>
<p><code>number</code> (TODO: rename to constant.number/.numeric.{integer, float, complex})</p>
</li>
<li>
<p><code>string</code> (TODO: string.quoted.{single, double}, string.raw/.unquoted)?</p>
<ul>
<li><code>regexp</code> - Regular expressions</li>
<li><code>special</code>
<ul>
<li><code>path</code></li>
<li><code>url</code></li>
</ul>
</li>
</ul>
</li>
<li>
<p><code>comment</code> - Code comments</p>
<ul>
<li><code>line</code> - Single line comments (<code>//</code>)</li>
<li><code>block</code> - Block comments (e.g. (<code>/* */</code>)
<ul>
<li><code>documentation</code> - Documentation comments (e.g. <code>///</code> in Rust)</li>
</ul>
</li>
</ul>
</li>
<li>
<p><code>variable</code> - Variables</p>
<ul>
<li><code>builtin</code> - Reserved language variables (<code>self</code>, <code>this</code>, <code>super</code>, etc)</li>
<li><code>parameter</code> - Function parameters</li>
<li><code>property</code></li>
<li><code>function</code> (TODO: ?)</li>
</ul>
</li>
<li>
<p><code>label</code></p>
</li>
<li>
<p><code>punctuation</code></p>
<ul>
<li><code>delimiter</code> - Commas, colons</li>
<li><code>bracket</code> - Parentheses, angle brackets, etc.</li>
</ul>
</li>
<li>
<p><code>keyword</code></p>
<ul>
<li><code>control</code>
<ul>
<li><code>conditional</code> - <code>if</code>, <code>else</code></li>
<li><code>repeat</code> - <code>for</code>, <code>while</code>, <code>loop</code></li>
<li><code>import</code> - <code>import</code>, <code>export</code></li>
<li>(TODO: return?)</li>
</ul>
</li>
<li><code>directive</code> - Preprocessor directives (<code>#if</code> in C) </li>
<li><code>function</code> - <code>fn</code>, <code>func</code></li>
</ul>
</li>
<li>
<p><code>operator</code> - <code>||</code>, <code>+=</code>, <code>&gt;</code>, <code>or</code></p>
</li>
<li>
<p><code>function</code></p>
<ul>
<li><code>builtin</code></li>
<li><code>method</code></li>
<li><code>macro</code></li>
<li><code>special</code> (preprocesor in C)</li>
</ul>
</li>
<li>
<p><code>tag</code> - Tags (e.g. <code>&lt;body&gt;</code> in HTML)</p>
</li>
<li>
<p><code>namespace</code></p>
</li>
</ul>
<h4 id="interface"><a class="header" href="#interface">Interface</a></h4>
<p>These scopes are used for theming the editor interface.</p>
<table><thead><tr><th>Key</th><th>Notes</th></tr></thead><tbody>
<tr><td><code>ui.background</code></td><td></td></tr>
<tr><td><code>ui.cursor</code></td><td></td></tr>
<tr><td><code>ui.cursor.insert</code></td><td></td></tr>
<tr><td><code>ui.cursor.select</code></td><td></td></tr>
<tr><td><code>ui.cursor.match</code></td><td>Matching bracket etc.</td></tr>
<tr><td><code>ui.cursor.primary</code></td><td>Cursor with primary selection</td></tr>
<tr><td><code>ui.linenr</code></td><td></td></tr>
<tr><td><code>ui.linenr.selected</code></td><td></td></tr>
<tr><td><code>ui.statusline</code></td><td>Statusline</td></tr>
<tr><td><code>ui.statusline.inactive</code></td><td>Statusline (unfocused document)</td></tr>
<tr><td><code>ui.popup</code></td><td></td></tr>
<tr><td><code>ui.window</code></td><td></td></tr>
<tr><td><code>ui.help</code></td><td></td></tr>
<tr><td><code>ui.text</code></td><td></td></tr>
<tr><td><code>ui.text.focus</code></td><td></td></tr>
<tr><td><code>ui.info</code></td><td></td></tr>
<tr><td><code>ui.info.text</code></td><td></td></tr>
<tr><td><code>ui.menu</code></td><td></td></tr>
<tr><td><code>ui.menu.selected</code></td><td></td></tr>
<tr><td><code>ui.selection</code></td><td>For selections in the editing area</td></tr>
<tr><td><code>ui.selection.primary</code></td><td></td></tr>
<tr><td><code>warning</code></td><td>Diagnostics warning (gutter)</td></tr>
<tr><td><code>error</code></td><td>Diagnostics error (gutter)</td></tr>
<tr><td><code>info</code></td><td>Diagnostics info (gutter)</td></tr>
<tr><td><code>hint</code></td><td>Diagnostics hint (gutter)</td></tr>
<tr><td><code>diagnostic</code></td><td>For text in editing area</td></tr>
</tbody></table>
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