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<![endif]--><script type="text/javascript" src="common/browserDetect.js"></script><script type="text/javascript" src="common/jquery/jquery-1.7.2.min.js"></script><script type="text/javascript" src="common/jquery/jquery.ui.all.js"></script><script type="text/javascript" src="common/jquery/jquery.cookie.js"></script><script type="text/javascript" src="common/jquery/treeview/jquery.treeview.min.js"></script><script type="text/javascript" src="common/jquery/layout/jquery.layout.js"></script><script type="text/javascript" src="search/l10n.js"></script><script type="text/javascript" src="search/htmlFileInfoList.js"></script><script type="text/javascript" src="search/nwSearchFnt.js"></script><script type="text/javascript" src="search/stemmers/en_stemmer.js"><!--//make this scalable to other languages as well.--></script><script type="text/javascript" src="search/index-1.js"></script><script type="text/javascript" src="search/index-2.js"></script><script type="text/javascript" src="search/index-3.js"></script></head><body><noscript><div id="noscript">JavaScript is disabled on your browser. Please enable JavaScript to enjoy all the features of this site.</div></noscript><div id="header"><a href="index.html"><img style="margin-right: 2px; height: 59px; padding-right: 25px; padding-top: 8px" align="right" src="common/images/logo.png" alt=" Documentation"></img></a><h1>Recoll user manual<br></br>Configuration overview</h1><div id="navheader"><table class="navLinks"><tr><td><a id="showHideButton" href="#" onclick="myLayout.toggle('west')" class="pointLeft" tabindex="5" title="Hide TOC tree">Sidebar
</a></td><td><a accesskey="p" class="navLinkPrevious" tabindex="5" href="RCL.INSTALL.CONFIG.RECOLLCONF.MISC.html">Prev</a>
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<a accesskey="n" class="navLinkNext" tabindex="5" href="RCL.INSTALL.CONFIG.FIELDS.XATTR.html">Next</a></td></tr></table></div></div><div id="content"><div class="sect2"><div class="titlepage"><div><div><h3 class="title"><a id="RCL.INSTALL.CONFIG.FIELDS"></a>The fields file</h3></div></div></div><div class="toc"><dl class="toc"><dt><span class="sect3"><a href="RCL.INSTALL.CONFIG.FIELDS.XATTR.html">Extended attributes in the fields file</a></span></dt></dl></div><p>This file contains information about dynamic fields handling
in <span class="application">Recoll</span>. Some very basic fields have hard-wired behaviour,
and, mostly, you should not change the original data inside the
<code class="filename">fields</code> file. But you can create custom fields
fitting your data and handle them just like they were native
ones.</p><p>The <code class="filename">fields</code> file has several sections,
which each define an aspect of fields processing. Quite often,
you'll have to modify several sections to obtain the desired
behaviour.</p><p>We will only give a short description here, you should refer
to the comments inside the default file for more detailed
information.</p><p>Field names should be lowercase alphabetic ASCII.</p><div class="variablelist"><dl class="variablelist"><dt><span class="term">[prefixes]</span></dt><dd><p>A field becomes indexed (searchable) by having
a prefix defined in this section.</p></dd><dt><span class="term">[stored]</span></dt><dd><p>A field becomes stored (displayable inside
results) by having its name listed in this section (typically
with an empty value).</p></dd><dt><span class="term">[aliases]</span></dt><dd><p>This section defines lists of synonyms for the
canonical names used inside the <code class="literal">[prefixes]</code>
and <code class="literal">[stored]</code> sections</p></dd><dt><span class="term">[queryaliases]</span></dt><dd><p>This section also defines aliases for the
canonic field names, with the difference that the substitution
will only be used at query time, avoiding any possibility that
the value would pick-up random metadata from documents.</p></dd><dt><span class="term">handler-specific sections</span></dt><dd><p>Some input handlers may need specific
configuration for handling fields. Only the email message handler
currently has such a section (named
<code class="literal">[mail]</code>). It allows indexing arbitrary email
headers in addition to the ones indexed by default. Other such
sections may appear in the future.</p></dd></dl></div><p>Here follows a small example of a personal
<code class="filename">fields</code>
file. This would extract a specific email header and
use it as a searchable field, with data displayable inside result
lists. (Side note: as the email handler does no decoding on the values,
only plain ascii headers can be indexed, and only the
first occurrence will be used for headers that occur several times).
</p><pre class="programlisting">[prefixes]
# Index mailmytag contents (with the given prefix)
mailmytag = XMTAG
[stored]
# Store mailmytag inside the document data record (so that it can be
# displayed - as %(mailmytag) - in result lists).
mailmytag =
[queryaliases]
filename = fn
containerfilename = cfn
[mail]
# Extract the X-My-Tag mail header, and use it internally with the
# mailmytag field name
x-my-tag = mailmytag
</pre><p>
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