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<li><a class="reference internal" href="#">block - temporarily block delivery of events</a><ul>
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<section id="block-temporarily-block-delivery-of-events">
<h1>block - temporarily block delivery of events<a class="headerlink" href="#block-temporarily-block-delivery-of-events" title="Link to this heading">¶</a></h1>
<section id="synopsis">
<h2>Synopsis<a class="headerlink" href="#synopsis" title="Link to this heading">¶</a></h2>
<div class="highlight-fish-synopsis notranslate"><div class="highlight"><pre><span></span><span class="nf">block</span><span class="w"> </span><span class="g g-Other">[(</span><span class="no">--local</span><span class="w"> </span><span class="g g-Other">|</span><span class="w"> </span><span class="no">--global</span><span class="g g-Other">)]</span>
<span class="nf">block</span><span class="w"> </span><span class="no">--erase</span>
</pre></div>
</div>
</section>
<section id="description">
<h2>Description<a class="headerlink" href="#description" title="Link to this heading">¶</a></h2>
<p><code class="docutils literal notranslate"><span class="pre">block</span></code> delays delivery of all events triggered by <code class="docutils literal notranslate"><span class="pre">fish</span></code> or the <a class="reference internal" href="emit.html"><span class="doc">emit</span></a>, thus delaying the execution of any function registered <code class="docutils literal notranslate"><span class="pre">--on-event</span></code>, <code class="docutils literal notranslate"><span class="pre">--on-process-exit</span></code>, <code class="docutils literal notranslate"><span class="pre">--on-job-exit</span></code>, <code class="docutils literal notranslate"><span class="pre">--on-variable</span></code> and <code class="docutils literal notranslate"><span class="pre">--on-signal</span></code> until after the block is removed.</p>
<p>Event blocks should not be confused with code blocks, which are created with <code class="docutils literal notranslate"><span class="pre">begin</span></code>, <code class="docutils literal notranslate"><span class="pre">if</span></code>, <code class="docutils literal notranslate"><span class="pre">while</span></code> or <code class="docutils literal notranslate"><span class="pre">for</span></code></p>
<p>Without options, <code class="docutils literal notranslate"><span class="pre">block</span></code> sets up a block that is released automatically at the end of the current function scope.</p>
<p>The following options are available:</p>
<dl class="simple">
<dt><strong>-l</strong> or <strong>--local</strong></dt><dd><p>Release the block automatically at the end of the current innermost code block scope.</p>
</dd>
<dt><strong>-g</strong> or <strong>--global</strong></dt><dd><p>Never automatically release the lock.</p>
</dd>
<dt><strong>-e</strong> or <strong>--erase</strong></dt><dd><p>Release global block.</p>
</dd>
<dt><strong>-h</strong> or <strong>--help</strong></dt><dd><p>Display help about using this command.</p>
</dd>
</dl>
</section>
<section id="example">
<h2>Example<a class="headerlink" href="#example" title="Link to this heading">¶</a></h2>
<div class="highlight-fish-docs-samples notranslate"><div class="highlight"><pre><span></span><span class="c"># Create a function that listens for events</span>
<span class="nf">function</span><span class="w"> </span><span class="no">--on-event</span><span class="w"> </span><span class="no">foo</span><span class="w"> </span><span class="no">foo</span><span class="p">;</span><span class="w"> </span><span class="nf">echo</span><span class="w"> </span><span class="s1">'foo fired'</span><span class="p">;</span><span class="w"> </span><span class="nf">end</span>
<span class="c"># Block the delivery of events</span>
<span class="nf">block</span><span class="w"> </span><span class="no">-g</span>
<span class="nf">emit</span><span class="w"> </span><span class="no">foo</span>
<span class="c"># No output will be produced</span>
<span class="nf">block</span><span class="w"> </span><span class="no">-e</span>
<span class="c"># 'foo fired' will now be printed</span>
</pre></div>
</div>
</section>
<section id="notes">
<h2>Notes<a class="headerlink" href="#notes" title="Link to this heading">¶</a></h2>
<p>Events are only received from the current fish process as there is no way to send events from one fish process to another.</p>
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