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<a name="mu-2047"></a>
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<p>
Next: <a href="mu-filter.html#mu-filter" accesskey="n" rel="next">mu filter</a>, Previous: <a href="mu-query.html#mu-query" accesskey="p" rel="prev">mu query</a>, Up: <a href="mu.html#mu" accesskey="u" rel="up">mu</a> [<a href="index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="Function-Index.html#Function-Index" title="Index" rel="index">Index</a>]</p>
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<a name="mu-2047-1"></a>
<h4 class="subsection">2.17.7 mu 2047</h4>
<p>The <code>mu 2047</code> command is a filter for decoding or encoding
email message headers formatted in accordance with RFC 2047 (see
<a href="http://www.faqs.org/rfcs/rfc2047.html">http://www.faqs.org/rfcs/rfc2047.html</a>. By default, it operates
in encode mode and assumes the ‘<samp>iso-8859-1</samp>’ encoding. If
arguments are supplied in the command line, they are treated as the
text to operate upon. Otherwise the command acts as a UNIX filter,
reading lines from the standard input and printing results on the
standard output.
</p>
<p>For example:
</p>
<div class="example">
<pre class="example">$ mu 2047 'Keld Jørn Simonsen <keld@dkuug.dk>'
=?ISO-8859-1?Q?Keld_J=F8rn_Simonsen?= <keld@dkuug.dk>
</pre></div>
<p>The decode mode can be requested via the <samp>--decode</samp>
(<samp>-d</samp>) option:
</p>
<div class="example">
<pre class="example">$ mu 2047 --decode '=?ISO-8859-1?Q?Keld_J=F8rn_Simonsen?= \
<keld@dkuug.dk>'
Keld Jørn Simonsen <keld@dkuug.dk>
</pre></div>
<p>The <samp>--charset</samp> (<samp>-c</samp>) option changes the default
character set. It is meaningful both in decode and in encode modes.
In decode mode it instructs the utility to convert the output to the
given character set. In encode mode it indicates the encoding of the
input data, which will be reflected in the resulting string:
</p>
<div class="example">
<pre class="example">$ mu 2047 --charset=utf-8 'Keld Jørn Simonsen <keld@dkuug.dk>'
=?utf-8?Q?Keld J=C3=B8rn Simonsen <keld@dkuug.dk>?=
</pre></div>
<p>The <samp>--encoding</samp> (<samp>-E</samp>) option can be used in encode
mode to change the output encoding. Valid arguments for this option
are: ‘<samp>quoted-printable</samp>’ (the default) or ‘<samp>base64</samp>’.
</p>
<p>The <samp>--newline</samp> (<samp>-n</samp>) option prints an additional
newline character after each line of output.
</p>
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