132 lines
6.2 KiB
HTML
132 lines
6.2 KiB
HTML
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<!DOCTYPE html>
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<html>
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<!-- Created by GNU Texinfo 7.1, https://www.gnu.org/software/texinfo/ -->
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<head>
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<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
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<!-- This manual documents Guile version 3.0.10.
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Copyright (C) 1996-1997, 2000-2005, 2009-2023 Free Software Foundation,
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Inc.
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Copyright (C) 2021 Maxime Devos
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Copyright (C) 2024 Tomas Volf
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Permission is granted to copy, distribute and/or modify this document
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under the terms of the GNU Free Documentation License, Version 1.3 or
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any later version published by the Free Software Foundation; with no
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Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts. A
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copy of the license is included in the section entitled "GNU Free
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Documentation License." -->
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<title>System Commands (Guile Reference Manual)</title>
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<link href="index.html" rel="start" title="Top">
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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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<link href="REPL-Commands.html" rel="up" title="REPL Commands">
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<link href="Inspect-Commands.html" rel="prev" title="Inspect Commands">
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</head>
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<body lang="en">
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<div class="subsubsection-level-extent" id="System-Commands">
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<div class="nav-panel">
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<p>
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Previous: <a href="Inspect-Commands.html" accesskey="p" rel="prev">Inspect Commands</a>, Up: <a href="REPL-Commands.html" accesskey="u" rel="up">REPL Commands</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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</div>
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<hr>
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<h4 class="subsubsection" id="System-Commands-1"><span>4.4.4.8 System Commands<a class="copiable-link" href="#System-Commands-1"> ¶</a></span></h4>
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<dl class="first-deffn">
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<dt class="deffn" id="index-gc"><span class="category-def">REPL Command: </span><span><strong class="def-name">gc</strong><a class="copiable-link" href="#index-gc"> ¶</a></span></dt>
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<dd><p>Garbage collection.
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</p></dd></dl>
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<dl class="first-deffn">
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<dt class="deffn" id="index-statistics"><span class="category-def">REPL Command: </span><span><strong class="def-name">statistics</strong><a class="copiable-link" href="#index-statistics"> ¶</a></span></dt>
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<dd><p>Display statistics.
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</p></dd></dl>
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<dl class="first-deffn">
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<dt class="deffn" id="index-option"><span class="category-def">REPL Command: </span><span><strong class="def-name">option</strong> <var class="def-var-arguments">[name] [exp]</var><a class="copiable-link" href="#index-option"> ¶</a></span></dt>
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<dd><p>With no arguments, lists all options. With one argument, shows the
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current value of the <var class="var">name</var> option. With two arguments, sets the
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<var class="var">name</var> option to the result of evaluating the Scheme expression
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<var class="var">exp</var>.
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</p></dd></dl>
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<dl class="first-deffn">
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<dt class="deffn" id="index-quit"><span class="category-def">REPL Command: </span><span><strong class="def-name">quit</strong><a class="copiable-link" href="#index-quit"> ¶</a></span></dt>
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<dd><p>Quit this session.
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</p></dd></dl>
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<p>Current REPL options include:
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</p>
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<dl class="table">
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<dt><code class="code">compile-options</code></dt>
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<dd><p>The options used when compiling expressions entered at the REPL.
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See <a class="xref" href="Compilation.html">Compiling Scheme Code</a>, for more on compilation options.
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</p></dd>
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<dt><code class="code">interp</code></dt>
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<dd><p>Whether to interpret or compile expressions given at the REPL, if such a
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choice is available. Off by default (indicating compilation).
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</p></dd>
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<dt><code class="code">prompt</code></dt>
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<dd><p>A customized REPL prompt. <code class="code">#f</code> by default, indicating the default
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prompt.
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</p></dd>
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<dt><code class="code">print</code></dt>
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<dd><p>A procedure of two arguments used to print the result of evaluating each
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expression. The arguments are the current REPL and the value to print.
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By default, <code class="code">#f</code>, to use the default procedure.
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</p></dd>
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<dt><code class="code">value-history</code></dt>
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<dd><p>Whether value history is on or not. See <a class="xref" href="Value-History.html">Value History</a>.
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</p></dd>
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<dt><code class="code">on-error</code></dt>
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<dd><p>What to do when an error happens. By default, <code class="code">debug</code>, meaning to
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enter the debugger. Other values include <code class="code">backtrace</code>, to show a
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backtrace without entering the debugger, or <code class="code">report</code>, to simply
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show a short error printout.
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</p></dd>
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</dl>
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<p>Default values for REPL options may be set using
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<code class="code">repl-default-option-set!</code> from <code class="code">(system repl common)</code>:
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</p>
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<dl class="first-deffn">
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<dt class="deffn" id="index-repl_002ddefault_002doption_002dset_0021"><span class="category-def">Scheme Procedure: </span><span><strong class="def-name">repl-default-option-set!</strong> <var class="def-var-arguments">key value</var><a class="copiable-link" href="#index-repl_002ddefault_002doption_002dset_0021"> ¶</a></span></dt>
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<dd><p>Set the default value of a REPL option. This function is particularly
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useful in a user’s init file. See <a class="xref" href="Init-File.html">The Init File, <samp class="file">~/.guile</samp></a>.
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</p></dd></dl>
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</div>
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<hr>
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<div class="nav-panel">
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<p>
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Previous: <a href="Inspect-Commands.html">Inspect Commands</a>, Up: <a href="REPL-Commands.html">REPL Commands</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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</div>
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</body>
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</html>
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