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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>Introduction</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.INDEXING.INTRODUCTION.CONFIG.html">Prev</a>
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<a accesskey="n" class="navLinkNext" tabindex="5" href="ch02s01s04.html">Next</a></td></tr></table></div></div><div id="content"><div class="sect2"><div class="titlepage"><div><div><h3 class="title"><a id="idp59798400"></a>Document types</h3></div></div></div><p><span class="application">Recoll</span> knows about quite a few different document
types. The parameters for document types recognition and
processing are set in
<a class="link" href="RCL.INDEXING.CONFIG.html" title="Index configuration">configuration files</a>.</p><p>Most file types, like HTML or word processing files, only hold
one document. Some file types, like email folders or zip
archives, can hold many individually indexed documents, which may
themselves be compound ones. Such hierarchies can go quite
deep, and <span class="application">Recoll</span> can process, for example, a
<span class="application">LibreOffice</span>
document stored as an attachment to an email message inside an
email folder archived in a zip file...</p><p><span class="application">Recoll</span> indexing processes plain text, HTML, OpenDocument
(Open/LibreOffice), email formats, and a few others internally.</p><p>Other file types (ie: postscript, pdf, ms-word, rtf ...)
need external applications for preprocessing. The list is in the
<a class="link" href="RCL.INSTALL.EXTERNAL.html" title="Supporting packages"> installation</a>
section. After every indexing operation, <span class="application">Recoll</span> updates a list of
commands that would be needed for indexing existing files
types. This list can be displayed by selecting the menu option
<span class="guimenu">File</span> ��� <span class="guimenuitem">Show Missing Helpers</span>
in the <span class="command"><strong>recoll</strong></span> GUI. It is stored in the
<code class="filename">missing</code> text file inside the configuration
directory.</p><p>By default, <span class="application">Recoll</span> will try to index any file type that
it has a way to read. This is sometimes not desirable, and
there are ways to either exclude some types, or on the
contrary to define a positive list of types to be
indexed. In the latter case, any type not in the list will
be ignored.</p><p>Excluding types can be done by adding wildcard name
patterns to the <code class="literal">skippedNames</code> list, which
can be done from the GUI Index configuration menu. For
versions 1.20 and later, you can alternatively set the
<code class="literal">excludedmimetypes</code> list in the
configuration file. This can be redefined for
subdirectories.</p><p>You can also define an exclusive list of MIME types to be indexed (no others will be indexed), by settting
the <code class="literal">indexedmimetypes</code> configuration
variable. Example:</p><pre class="programlisting">
indexedmimetypes = text/html application/pdf
</pre><p>
It is possible to redefine this parameter for
subdirectories. Example:</p><pre class="programlisting">
[/path/to/my/dir]
indexedmimetypes = application/pdf
</pre><p>
(When using sections like this, don't forget that they remain
in effect until the end of the file or another section
indicator).</p><p><code class="literal">excludedmimetypes</code> or
<code class="literal">indexedmimetypes</code>, can be set either by
editing the <a class="link" href="RCL.INSTALL.CONFIG.RECOLLCONF.html" title="The main configuration file, recoll.conf">
main configuration file
(<code class="filename">recoll.conf</code>)</a>, or from the GUI
index configuration tool.</p></div><script type="text/javascript" src="common/main.js"></script><script type="text/javascript" src="common/splitterInit.js"></script><div class="navfooter"><hr></hr><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="RCL.INDEXING.INTRODUCTION.CONFIG.html">Prev</a>��</td><td width="20%" align="center"><a accesskey="u" href="RCL.INDEXING.INTRODUCTION.html">Up</a></td><td width="40%" align="right">��<a accesskey="n" href="ch02s01s04.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top">��</td><td width="20%" align="center"><a accesskey="h" href="index.html">Home</a></td><td width="40%" align="right" valign="top">��</td></tr></table></div></div><div id="sidebar"><div id="leftnavigation" style="padding-top:3px;"><div id="tabs"><ul><li><a href="#treeDiv" style="outline:0;" tabindex="1"><span class="contentsTab">Contents</span></a></li><li><a href="#searchDiv" style="outline:0;" tabindex="1" onclick="doSearch()"><span class="searchTab">Search</span></a></li></ul><div id="treeDiv"><img src="common/images/loading.gif" alt="loading table of contents..." id="tocLoading" style="display:block;"></img><div id="ulTreeDiv" style="display:none"><ul id="tree" class="filetree"><li><span class="file"><a href="RCL.INTRODUCTION.html" tabindex="1">Introduction</a></span><ul><li><span class="file"><a href="RCL.INTRODUCTION.TRYIT.html" tabindex="1">Giving it a try</a></span></li><li><span class="file"><a href="RCL.INTRODUCTION.SEARCH.html" tabindex="1">Full text search</a></span></li><li><span class="file"><a href="RCL.INTRODUCTION.RECOLL.html" tabindex="1">Recoll overview</a></span></li></ul></li><li><span class="file"><a href="RCL.INDEXING.html" tabindex="1">Indexing</a></span><ul><li><span class="file"><a href="RCL.INDEXING.INTRODUCTION.html" tabindex="1">Introduction</a></span><ul><li><span class="file"><a href="RCL.INDEXING.INTRODUCTION.MODES.html" tabindex="1">Indexing modes</a></span></li><li><span class="file"><a href="RCL.INDEXING.INTRODUCTION.CONFIG.html" tabindex="1">Configurations, multiple indexes</a></span></li><li id="webhelp-currentid"><span class="file"><a href="ch02s01s03.html" tabindex="1">Document types</a></span></li><li><span class="file"><a href="ch02s01s04.html" tabindex="1">Indexing failures</a></span></li><li><span class="file"><a href="ch02s01s05.html" tabindex="1">Recovery</a></span></li></ul></li><li><span class="file"><a href="RCL.INDEXING.STORAGE.html" tabindex="1">Index storage</a></span><ul><li><span class="file"><a href="RCL.INDEXING.STORAGE.FORMAT.html" tabindex="1">Xapian index formats</a></span></li><li><span class="file"><a href="RCL.INDEXING.STORAGE.SECURITY.html" tabindex="1">Security aspects</a></span></li></ul></li><li><span class="file"><a href="RCL.INDEXING.CONFIG.html" tabindex="1">Index configuration</a></span><ul><li><span class="file"><a href="RCL.INDEXING.CONFIG.MULTIPLE.html" tabindex="1">Multiple indexes</a></span></li><li><span class="file"><a href="RCL.INDEXING.CONFIG.SENS.html" tabindex="1">Index case and diacritics sensitivity</a></span></li><li><span class="file"><a href="RCL.INDEXING.CONFIG.GUI.html" tabindex="1">The index configuration GUI</a></span></li></ul></li><li><span class="file"><a href="RCL.INDEXING.WEBQUEUE.html" tabindex="1">Indexing WEB pages you wisit</a></span></li><li><span class="file"><a href="RCL.INDEXING.EXTATTR.html" tabindex="1">Extended attributes data</a></span></li><li><span class="file"><a href="RCL.INDEXING.EXTTAGS.html" tabindex="1">Importing external tags</a></span></li><li><span class="file"><a href="RCL.INDEXING.PERIODIC.html" tabindex="1">Periodic indexing</a></span><ul><li><span class="file"><a href="RCL.INDEXING.PERIODIC.EXEC.html" tabindex="1">Running indexing</a></span></li><li><span class="file"><a href="RCL.INDEXING.PERIODIC.AUTOMAT.html" tabindex="1">Using cron to automate
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