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+<!DOCTYPE HTML>
+<html lang="en" class="colibri" dir="ltr">
+ <head>
+ <!-- Book generated using mdBook -->
+ <meta charset="UTF-8">
+ <title>Adding languages</title>
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+ <link rel="stylesheet" href="../css/print.css" media="print">
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+ <!-- Fonts -->
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+ <link rel="stylesheet" href="../tomorrow-night.css">
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+ <!-- Provide site root to javascript -->
+ <script>
+ var path_to_root = "../";
+ var default_theme = window.matchMedia("(prefers-color-scheme: dark)").matches ? "colibri" : "colibri";
+ </script>
+
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+
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+ localStorage.setItem('mdbook-theme', theme.slice(1, theme.length - 1));
+ }
+
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+ localStorage.setItem('mdbook-sidebar', sidebar.slice(1, sidebar.length - 1));
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+ try { theme = localStorage.getItem('mdbook-theme'); } catch(e) { }
+ if (theme === null || theme === undefined) { theme = default_theme; }
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+ html.classList.remove('colibri')
+ html.classList.add(theme);
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+ body.classList.remove('no-js')
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+ sidebar = sidebar || 'visible';
+ } else {
+ sidebar = 'hidden';
+ }
+ sidebar_toggle.checked = sidebar === 'visible';
+ body.classList.remove('sidebar-visible');
+ body.classList.add("sidebar-" + sidebar);
+ </script>
+
+ <nav id="sidebar" class="sidebar" aria-label="Table of contents">
+ <div class="sidebar-scrollbox">
+ <ol class="chapter"><li class="chapter-item expanded affix "><a href="../title-page.html">Helix</a></li><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><ol class="section"><li class="chapter-item expanded "><a href="../keymap.html"><strong aria-hidden="true">2.1.</strong> Keymap</a></li><li class="chapter-item expanded "><a href="../commands.html"><strong aria-hidden="true">2.2.</strong> Commands</a></li><li class="chapter-item expanded "><a href="../lang-support.html"><strong aria-hidden="true">2.3.</strong> Language support</a></li></ol></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"><strong aria-hidden="true">4.1.</strong> Themes</a></li><li class="chapter-item expanded "><a href="../remapping.html"><strong aria-hidden="true">4.2.</strong> Key remapping</a></li><li class="chapter-item expanded "><a href="../languages.html"><strong aria-hidden="true">4.3.</strong> Languages</a></li></ol></li><li class="chapter-item expanded "><a href="../guides/index.html"><strong aria-hidden="true">5.</strong> Guides</a></li><li><ol class="section"><li class="chapter-item expanded "><a href="../guides/adding_languages.html" class="active"><strong aria-hidden="true">5.1.</strong> Adding languages</a></li><li class="chapter-item expanded "><a href="../guides/textobject.html"><strong aria-hidden="true">5.2.</strong> Adding textobject queries</a></li><li class="chapter-item expanded "><a href="../guides/indent.html"><strong aria-hidden="true">5.3.</strong> Adding indent queries</a></li><li class="chapter-item expanded "><a href="../guides/injection.html"><strong aria-hidden="true">5.4.</strong> Adding injection queries</a></li><li class="chapter-item expanded "><a href="../guides/rainbow_bracket_queries.html"><strong aria-hidden="true">5.5.</strong> Adding rainbow bracket queries</a></li></ol></li></ol>
+ </div>
+ <div id="sidebar-resize-handle" class="sidebar-resize-handle"></div>
+ </nav>
+
+ <!-- Track and set sidebar scroll position -->
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+ var sidebarScrollbox = document.querySelector('#sidebar .sidebar-scrollbox');
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+ if (e.target.tagName === 'A') {
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+ var sidebarScrollTop = sessionStorage.getItem('sidebar-scroll');
+ sessionStorage.removeItem('sidebar-scroll');
+ if (sidebarScrollTop) {
+ // preserve sidebar scroll position when navigating via links within sidebar
+ sidebarScrollbox.scrollTop = sidebarScrollTop;
+ } else {
+ // scroll sidebar to current active section when navigating via "next/previous chapter" buttons
+ var activeSection = document.querySelector('#sidebar .active');
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+ activeSection.scrollIntoView({ block: 'center' });
+ }
+ }
+ </script>
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+ <li role="none"><button role="menuitem" class="theme" id="navy">Navy</button></li>
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+ </ul>
+ <button id="search-toggle" class="icon-button" type="button" title="Search. (Shortkey: s)" aria-label="Toggle Searchbar" aria-expanded="false" aria-keyshortcuts="S" aria-controls="searchbar">
+ <i class="fa fa-search"></i>
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+
+ <h1 class="menu-title"></h1>
+
+ <div class="right-buttons">
+ <a href="../print.html" title="Print this book" aria-label="Print this book">
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+ </a>
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+ <i id="git-repository-button" class="fa fa-github"></i>
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+
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+ </div>
+
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+ <form id="searchbar-outer" class="searchbar-outer">
+ <input type="search" id="searchbar" name="searchbar" placeholder="Search this book ..." aria-controls="searchresults-outer" aria-describedby="searchresults-header">
+ </form>
+ <div id="searchresults-outer" class="searchresults-outer hidden">
+ <div id="searchresults-header" class="searchresults-header"></div>
+ <ul id="searchresults">
+ </ul>
+ </div>
+ </div>
+
+ <!-- Apply ARIA attributes after the sidebar and the sidebar toggle button are added to the DOM -->
+ <script>
+ document.getElementById('sidebar-toggle').setAttribute('aria-expanded', sidebar === 'visible');
+ document.getElementById('sidebar').setAttribute('aria-hidden', sidebar !== 'visible');
+ Array.from(document.querySelectorAll('#sidebar a')).forEach(function(link) {
+ link.setAttribute('tabIndex', sidebar === 'visible' ? 0 : -1);
+ });
+ </script>
+
+ <div id="content" class="content">
+ <main>
+ <h1 id="adding-new-languages-to-helix"><a class="header" href="#adding-new-languages-to-helix">Adding new languages to Helix</a></h1>
+<p>In order to add a new language to Helix, you will need to follow the steps
+below.</p>
+<h2 id="language-configuration"><a class="header" href="#language-configuration">Language configuration</a></h2>
+<ol>
+<li>Add a new <code>[[language]]</code> entry in the <code>languages.toml</code> file and provide the
+necessary configuration for the new language. For more information on
+language configuration, refer to the
+<a href="../languages.html">language configuration section</a> of the documentation.
+A new language server can be added by extending the <code>[language-server]</code> table in the same file.</li>
+<li>If you are adding a new language or updating an existing language server
+configuration, run the command <code>cargo xtask docgen</code> to update the
+<a href="../lang-support.html">Language Support</a> documentation.</li>
+</ol>
+<blockquote>
+<p>💡 If you are adding a new Language Server configuration, make sure to update
+the
+<a href="https://github.com/helix-editor/helix/wiki/How-to-install-the-default-language-servers">Language Server Wiki</a>
+with the installation instructions.</p>
+</blockquote>
+<h2 id="grammar-configuration"><a class="header" href="#grammar-configuration">Grammar configuration</a></h2>
+<ol>
+<li>If a tree-sitter grammar is available for the new language, add a new
+<code>[[grammar]]</code> entry to the <code>languages.toml</code> file.</li>
+<li>If you are testing the grammar locally, you can use the <code>source.path</code> key
+with an absolute path to the grammar. However, before submitting a pull
+request, make sure to switch to using <code>source.git</code>.</li>
+</ol>
+<h2 id="queries"><a class="header" href="#queries">Queries</a></h2>
+<ol>
+<li>In order to provide syntax highlighting and indentation for the new language,
+you will need to add queries.</li>
+<li>Create a new directory for the language with the path
+<code>runtime/queries/&lt;name&gt;/</code>.</li>
+<li>Refer to the
+<a href="https://tree-sitter.github.io/tree-sitter/syntax-highlighting#queries">tree-sitter website</a>
+for more information on writing queries.</li>
+<li>A list of highlight captures can be found <a href="https://docs.helix-editor.com/themes.html#scopes">on the themes page</a>.</li>
+</ol>
+<blockquote>
+<p>💡 In Helix, the first matching query takes precedence when evaluating
+queries, which is different from other editors such as Neovim where the last
+matching query supersedes the ones before it. See
+<a href="https://github.com/helix-editor/helix/pull/1170#issuecomment-997294090">this issue</a>
+for an example.</p>
+</blockquote>
+<h2 id="common-issues"><a class="header" href="#common-issues">Common issues</a></h2>
+<ul>
+<li>If you encounter errors when running Helix after switching branches, you may
+need to update the tree-sitter grammars. Run the command <code>hx --grammar fetch</code>
+to fetch the grammars and <code>hx --grammar build</code> to build any out-of-date
+grammars.</li>
+<li>If a parser is causing a segfault, or you want to remove it, make sure to
+remove the compiled parser located at <code>runtime/grammars/&lt;name&gt;.so</code>.</li>
+<li>If you are attempting to add queries and Helix is unable to locate them, ensure that the environment variable <code>HELIX_RUNTIME</code> is set to the location of the <code>runtime</code> folder you're developing in.</li>
+</ul>
+
+ </main>
+
+ <nav class="nav-wrapper" aria-label="Page navigation">
+ <!-- Mobile navigation buttons -->
+ <a rel="prev" href="../guides/index.html" class="mobile-nav-chapters previous" title="Previous chapter" aria-label="Previous chapter" aria-keyshortcuts="Left">
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