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<a name="Editing"></a>
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<p>
Next: <a href="Command-History.html#Command-History" accesskey="n" rel="next">Command History</a>, Previous: <a href="Prompt.html#Prompt" accesskey="p" rel="prev">Prompt</a>, Up: <a href="Controlling-GDB.html#Controlling-GDB" accesskey="u" rel="up">Controlling GDB</a> &nbsp; [<a href="index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="Concept-Index.html#Concept-Index" title="Index" rel="index">Index</a>]</p>
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<hr>
<a name="Command-Editing"></a>
<h3 class="section">22.2 Command Editing</h3>
<a name="index-readline"></a>
<a name="index-command-line-editing"></a>

<p><small>GDB</small> reads its input commands via the <em>Readline</em> interface.  This
<small>GNU</small> library provides consistent behavior for programs which provide a
command line interface to the user.  Advantages are <small>GNU</small> Emacs-style
or <em>vi</em>-style inline editing of commands, <code>csh</code>-like history
substitution, and a storage and recall of command history across
debugging sessions.
</p>
<p>You may control the behavior of command line editing in <small>GDB</small> with the
command <code>set</code>.
</p>
<dl compact="compact">
<dd><a name="index-set-editing"></a>
<a name="index-editing"></a>
</dd>
<dt><code>set editing</code></dt>
<dt><code>set editing on</code></dt>
<dd><p>Enable command line editing (enabled by default).
</p>
</dd>
<dt><code>set editing off</code></dt>
<dd><p>Disable command line editing.
</p>
<a name="index-show-editing"></a>
</dd>
<dt><code>show editing</code></dt>
<dd><p>Show whether command line editing is enabled.
</p></dd>
</dl>

<p>See <a href="Command-Line-Editing.html#Command-Line-Editing">Command Line Editing</a>,
for more details about the Readline
interface.  Users unfamiliar with <small>GNU</small> Emacs or <code>vi</code> are
encouraged to read that chapter.
</p>


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