100 lines
4.4 KiB
HTML
100 lines
4.4 KiB
HTML
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Copyright (C) 1996-1997, 2000-2005, 2009-2023 Free Software Foundation,
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Copyright (C) 2021 Maxime Devos
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Copyright (C) 2024 Tomas Volf
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<title>REPL Commands (Guile Reference Manual)</title>
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<link href="Concept-Index.html" rel="index" title="Concept Index">
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<link href="index.html#SEC_Contents" rel="contents" title="Table of Contents">
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<div class="subsection-level-extent" id="REPL-Commands">
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<p>
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Next: <a href="Error-Handling.html" accesskey="n" rel="next">Error Handling</a>, Previous: <a href="Value-History.html" accesskey="p" rel="prev">Value History</a>, Up: <a href="Using-Guile-Interactively.html" accesskey="u" rel="up">Using Guile Interactively</a> [<a href="index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="Concept-Index.html" title="Index" rel="index">Index</a>]</p>
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<hr>
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<h4 class="subsection" id="REPL-Commands-1"><span>4.4.4 REPL Commands<a class="copiable-link" href="#REPL-Commands-1"> ¶</a></span></h4>
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<a class="index-entry-id" id="index-commands"></a>
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<p>The REPL exists to read expressions, evaluate them, and then print their
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results. But sometimes one wants to tell the REPL to evaluate an
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expression in a different way, or to do something else altogether. A
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user can affect the way the REPL works with a <em class="dfn">REPL command</em>.
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</p>
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<p>The previous section had an example of a command, in the form of
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<code class="code">,option</code>.
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</p>
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<div class="example lisp">
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<pre class="lisp-preformatted">scheme@(guile-user)> ,option value-history #t
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</pre></div>
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<p>Commands are distinguished from expressions by their initial comma
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(‘<samp class="samp">,</samp>’). Since a comma cannot begin an expression in most languages,
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it is an effective indicator to the REPL that the following text forms a
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command, not an expression.
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</p>
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<p>REPL commands are convenient because they are always there. Even if the
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current module doesn’t have a binding for <code class="code">pretty-print</code>, one can
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always <code class="code">,pretty-print</code>.
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</p>
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<p>The following sections document the various commands, grouped together
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by functionality. Many of the commands have abbreviations; see the
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online help (<code class="code">,help</code>) for more information.
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</p>
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<ul class="mini-toc">
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<li><a href="Help-Commands.html" accesskey="1">Help Commands</a></li>
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<li><a href="Module-Commands.html" accesskey="2">Module Commands</a></li>
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<li><a href="Language-Commands.html" accesskey="3">Language Commands</a></li>
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<li><a href="Compile-Commands.html" accesskey="4">Compile Commands</a></li>
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<li><a href="Profile-Commands.html" accesskey="5">Profile Commands</a></li>
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<li><a href="Debug-Commands.html" accesskey="6">Debug Commands</a></li>
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<li><a href="Inspect-Commands.html" accesskey="7">Inspect Commands</a></li>
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<li><a href="System-Commands.html" accesskey="8">System Commands</a></li>
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</ul>
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</div>
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