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Edit File: Inserting-a-Backslash.html
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <html> <!-- Created by GNU Texinfo 6.8, https://www.gnu.org/software/texinfo/ --> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8"> <!-- This manual is for GNU Texinfo (version 6.8, 8 June 2021), a documentation system that can produce both online information and a printed manual from a single source using semantic markup. Copyright (C) 1988, 1990-1993, 1995-1999, 2001-2021 Free Software Foundation, Inc. Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.3 or any later version published by the Free Software Foundation; with no Invariant Sections, with no Front-Cover Texts, and with no Back-Cover Texts. A copy of the license is included in the section entitled "GNU Free Documentation License". --> <title>Inserting a Backslash (GNU Texinfo 6.8)</title> <meta name="description" content="Inserting a Backslash (GNU Texinfo 6.8)"> <meta name="keywords" content="Inserting a Backslash (GNU Texinfo 6.8)"> <meta name="resource-type" content="document"> <meta name="distribution" content="global"> <meta name="Generator" content="texi2any"> <meta name="viewport" content="width=device-width,initial-scale=1"> <link href="index.html" rel="start" title="Top"> <link href="Command-and-Variable-Index.html" rel="index" title="Command and Variable Index"> <link href="index.html#SEC_Contents" rel="contents" title="Table of Contents"> <link href="Special-Characters.html" rel="up" title="Special Characters"> <link href="Inserting-a-Hashsign.html" rel="next" title="Inserting a Hashsign"> <link href="Inserting-a-Comma.html" rel="prev" title="Inserting a Comma"> <style type="text/css"> <!-- a.copiable-anchor {visibility: hidden; text-decoration: none; line-height: 0em} a.summary-letter {text-decoration: none} blockquote.indentedblock {margin-right: 0em} div.display {margin-left: 3.2em} div.example {margin-left: 3.2em} kbd {font-style: oblique} pre.display {font-family: inherit} pre.format {font-family: inherit} pre.menu-comment {font-family: serif} pre.menu-preformatted {font-family: serif} span.nolinebreak {white-space: nowrap} span.roman {font-family: initial; font-weight: normal} span.sansserif {font-family: sans-serif; font-weight: normal} span:hover a.copiable-anchor {visibility: visible} ul.no-bullet {list-style: none} --> </style> </head> <body lang="en"> <div class="subsection" id="Inserting-a-Backslash"> <div class="header"> <p> Next: <a href="Inserting-a-Hashsign.html" accesskey="n" rel="next">Inserting ‘#’ with <code>@hashchar{}</code></a>, Previous: <a href="Inserting-a-Comma.html" accesskey="p" rel="prev">Inserting ‘,’ with <code>@comma{}</code></a>, Up: <a href="Special-Characters.html" accesskey="u" rel="up">Special Characters: Inserting @ {} , \ # &</a> [<a href="index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="Command-and-Variable-Index.html" title="Index" rel="index">Index</a>]</p> </div> <hr> <span id="Inserting-_0060_005c_0027-with-_0040backslashchar_007b_007d"></span><h4 class="subsection">11.1.4 Inserting ‘\’ with <code>@backslashchar{}</code></h4> <span id="index-backslashchar"></span> <span id="index-Backslash_002c-inserting"></span> <p>Ordinarily, a backslash ‘\’ is a normal character in Texinfo that can be simply typed in your input where you need it. The result is to typeset the backslash from the typewriter font. </p> <p>However, Texinfo uses the backslash as a special character in one restricted context: to delimit formal arguments in the bodies of user-defined macros (see <a href="Defining-Macros.html">Defining Macros</a>). </p> <p>Due to the vagaries of macro argument parsing, it is more reliable to pass an alphabetic command that produces a backslash instead of using a literal \. Hence <code>@backslashchar{}</code>. Here is an example macro call: </p> <div class="example"> <pre class="example">@mymac{One argument@backslashchar{} with a backslash} </pre></div> <span id="index-_005cbackslash"></span> <p>Texinfo documents may also use \ as a command character inside <code>@math</code> (see <a href="Inserting-Math.html"><code>@math</code> and <code>@displaymath</code>: Formatting Mathematics</a>). In this case, <code>@\</code> or <code>\backslash</code> produces a “math” backslash (from the math symbol font), while <code>@backslashchar{}</code> produces a typewriter backslash as usual. </p> <p>Although ‘<samp>@backslashchar{}</samp>’ can be used nearly anywhere, there is no need for it except in these unusual cases. </p> </div> </body> </html>