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contents/glyph/book/text_editing/inclusions.html

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-----
title: "Glyph - Content Reuse"
content-type: page
-----
<nav class="navigation"><a href="/glyph/book/text_editing/stylesheets.html">← Adding Stylesheets</a> | <a
    href="/glyph/book/index.html">Contents</a> | <a href="/glyph/book/text_editing/conditionals.html">Conditional Macros
    →</a></nav>
<section class="section">
  <header>
    <h1 id="file-inclusions" class="toc">File inclusions</h1>
  </header>
  <p>If you&#8217;re authoring a user manual, a long article, or a book, writing everything inside a single
    <code>document.glyph</code> file may not be optimal. For this reason, Glyph provides an <a
      href="/glyph/book/macros/macros_core.html#m_include"><code>include</code></a> macro that can be used to include
    the contents of any file within the <code>text/</code> directory:</p>
  <p><code>include[general/introduction.textile]</code></p>
  <p>The macro call above loads the contents of the <code>introduction.textile</code> file, within the
    <code>text/general</code> directory.</p>
  <p>When including a text file, an input filter macro is applied to its contents by default, based on the file
    extension used:</p>
  <ul>
    <li><code>.textile</code> or <code>.txt</code> &rarr; <a
        href="/glyph/book/macros/macros_filters.html#m_textile"><code>textile</code></a> macro</li>
    <li><code>.markdown</code> or <code>.md</code> &rarr; <a
        href="/glyph/book/macros/macros_filters.html#m_markdown"><code>markdown</code></a> macro</li>
  </ul>
  <p>You can override this behavior by setting the <code>filters.by_file_extensions</code> configuration setting to
    <code>false</code>. If no extension is specified, <code>.glyph</code> is assumed.</p>
  <section class="section">
    <header>
      <h1 id="h_39" class="toc">Remarks</h1>
    </header>
    <ul>
      <li>The <a href="/glyph/book/macros/macros_core.html#m_include"><code>include</code></a> macro can also be used to
        include (and evaluate) ruby files (with a <code>.rb</code> extension). In this case, the ruby file must be
        placed within the <code>lib/</code> directory of the current project.</li>
      <li>The <a href="/glyph/book/macros/macros_core.html#m_load"><code>load</code></a> macro macro can be used to
        include the content of any file <em>without</em> performing any evaluation.</li>
    </ul>

  </section>

</section>
<section class="section">
  <header>
    <h1 id="snippets" class="toc">Snippets</h1>
  </header>
  <p>While including the context of an entire file is definitely a useful feature for content reuse, sometimes it can be
    an overkill. What if, for example, you just want to reuse a short procedure or even a sentence or a single word? In
    this case, you may want to consider using a <em>snippet</em> instead.</p>
  <p>Snippets can be defined using the <a
      href="/glyph/book/macros/macros_core.html#m_snippet_"><code>snippet:</code></a> macro (aliased by
    <code>&amp;:</code>) and called by using the <a
      href="/glyph/book/macros/macros_core.html#m_snippet"><code>snippet</code></a> macro (aliased by
    <code>&amp;</code>). Consider the following simple example:</p>
  <div class="CodeRay">
    <div class="code">
      <pre><span class="line-numbers"><a href="#n1" name="n1">1</a></span>&amp;:[markups|Textile or Markdown]
<span class="line-numbers"><a href="#n2" name="n2">2</a></span>
<span class="line-numbers"><a href="#n3" name="n3">3</a></span>Glyph supports &amp;[markups].</pre>
    </div>
  </div>

  <p>You can use <code>&amp;[markups]</code> anywhere in your document instead of having to type "Textile or Markdown"
    every time. Additionally, later on you can change the value of the <code>markups</code> to change it everywhere else
    in the document.</p>

</section>
<aside class="tip">
  <span class="note-title">Tip</span>Snippets (or any other macro) can be nested within other snippets. Glyph takes care
  of checking if you nested snippets or macros mutually and warns you as necessary.

</aside>

<nav class="navigation"><a href="/glyph/book/text_editing/stylesheets.html">← Adding Stylesheets</a> | <a
    href="/glyph/book/index.html">Contents</a> | <a href="/glyph/book/text_editing/conditionals.html">Conditional Macros
    →</a></nav>