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<div class="section" id="foreach">
<span id="command:foreach"></span><h1>foreach<a class="headerlink" href="#foreach" title="Permalink to this headline">¶</a></h1>
<p>Evaluate a group of commands for each value in a list.</p>
<div class="highlight-default"><div class="highlight"><pre><span></span><span class="n">foreach</span><span class="p">(</span><span class="n">loop_var</span> <span class="n">arg1</span> <span class="n">arg2</span> <span class="o">...</span><span class="p">)</span>
<span class="n">COMMAND1</span><span class="p">(</span><span class="n">ARGS</span> <span class="o">...</span><span class="p">)</span>
<span class="n">COMMAND2</span><span class="p">(</span><span class="n">ARGS</span> <span class="o">...</span><span class="p">)</span>
<span class="o">...</span>
<span class="n">endforeach</span><span class="p">(</span><span class="n">loop_var</span><span class="p">)</span>
</pre></div>
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<p>All commands between foreach and the matching endforeach are recorded
without being invoked. Once the endforeach is evaluated, the recorded
list of commands is invoked once for each argument listed in the
original foreach command. Before each iteration of the loop
<code class="docutils literal"><span class="pre">${loop_var}</span></code> will be set as a variable with the current value in the
list.</p>
<div class="highlight-default"><div class="highlight"><pre><span></span><span class="n">foreach</span><span class="p">(</span><span class="n">loop_var</span> <span class="n">RANGE</span> <span class="n">total</span><span class="p">)</span>
<span class="n">foreach</span><span class="p">(</span><span class="n">loop_var</span> <span class="n">RANGE</span> <span class="n">start</span> <span class="n">stop</span> <span class="p">[</span><span class="n">step</span><span class="p">])</span>
</pre></div>
</div>
<p>Foreach can also iterate over a generated range of numbers. There are
three types of this iteration:</p>
<ul class="simple">
<li>When specifying single number, the range will have elements 0 to
“total”.</li>
<li>When specifying two numbers, the range will have elements from the
first number to the second number.</li>
<li>The third optional number is the increment used to iterate from the
first number to the second number.</li>
</ul>
<div class="highlight-default"><div class="highlight"><pre><span></span><span class="n">foreach</span><span class="p">(</span><span class="n">loop_var</span> <span class="n">IN</span> <span class="p">[</span><span class="n">LISTS</span> <span class="p">[</span><span class="n">list1</span> <span class="p">[</span><span class="o">...</span><span class="p">]]]</span>
<span class="p">[</span><span class="n">ITEMS</span> <span class="p">[</span><span class="n">item1</span> <span class="p">[</span><span class="o">...</span><span class="p">]]])</span>
</pre></div>
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<p>Iterates over a precise list of items. The <code class="docutils literal"><span class="pre">LISTS</span></code> option names
list-valued variables to be traversed, including empty elements (an
empty string is a zero-length list). (Note macro
arguments are not variables.) The <code class="docutils literal"><span class="pre">ITEMS</span></code> option ends argument
parsing and includes all arguments following it in the iteration.</p>
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