tools/perl-5.8.0/doc/MHonArc/resources/subjectreplyrxp.html

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<title>MHonArc Resources: SUBJECTREPLYRXP</title>
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<h1>SUBJECTREPLYRXP</h1>

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<h2>Syntax</h2>

<dl>

<dt><strong>Envariable</strong></dt>
<dd><p>
<code>M2H_SUBJECTREPLYRXP=</code><var>perl_regex</var>
</p>
</dd>

<dt><strong>Element</strong></dt>
<dd><p>
<code>&lt;SUBJECTREPLYRXP&gt;</code><br>
<var>perl_regex</var><br>
<code>&lt;/SUBJECTREPLYRXP&gt;</code><br>
</p>
</dd>

<dt><strong>Command-line Option</strong></dt>
<dd><p>
<code>-subjectreplyrxp <var>perl_regex</var></code>
</p>
</dd>

</dl>

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<h2>Description</h2>

<p>SUBJECTREPLYRXP defines the Perl regular expression matching
subject text that denotes a reply message.  For example, the
string "<tt>Re: </tt>" is commonly prepended to the subject
to denote a reply.
</p>

<p>SUBJECTREPLYRXP is used by MHonArc for sorting and threading
purposes.  The regex defined is used in <b><tt>s///</tt></b>
operation loops with the case-insensitive modifier.  Hence, the regex should eventually fail if
called repeatedly on the same string in an <b><tt>s///</tt></b> operation.
If not, an infinite loop will result.  In sum, SUBJECTREPLYRXP
should <strong>NOT</strong> be able to match the null string.  Also,
the regex should be anchored to the beginning of the string.
</p>

<p>The SUBJECTREPLYRXP is normally changed to suit a particular
locale or if unusual notations are being used to denote replies.
</p>

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<h2>Default Setting</h2>

<pre>
^\s*(re|sv|fwd|fw)[\[\]\d]*[:>-]+\s*
</pre>

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<h2>Resource Variables</h2>

<p>N/A
</p>

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<h2>Examples</h2>

<p>None.
</p>

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<h2>Version</h2>

<p>2.2.0
</p>

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<h2>See Also</h2>

<p>
<a href="subjectarticlerxp.html">SUBJECTARTICLERXP</a>
</p>

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<address>
$Date: 2002/07/27 05:13:11 $ <br>
<img align="top" src="../monicon.png" alt="">
<a href="http://www.mhonarc.org/"
><strong>MHonArc</strong></a><br>
Copyright &#169; 1998, <a href="http://www.earlhood.com/"
>Earl Hood</a>, <a href="mailto:mhonarc@mhonarc.org"
>mhonarc@mhonarc.org</a><br>
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