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<html>
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<head>
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<title>pcre_study specification</title>
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</head>
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<body bgcolor="#FFFFFF" text="#00005A" link="#0066FF" alink="#3399FF" vlink="#2222BB">
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This HTML document has been generated automatically from the original man page.
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If there is any nonsense in it, please consult the man page, in case the
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conversion went wrong.<br>
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<br><b>
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SYNOPSIS
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</b><br>
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<P>
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<b>#include <pcre.h></b>
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</P>
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<P>
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<b>pcre_extra *pcre_study(const pcre *<i>code</i>, int <i>options</i>,</b>
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<b>const char **<i>errptr</i>);</b>
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</P>
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<br><b>
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DESCRIPTION
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</b><br>
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<P>
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This function studies a compiled pattern, to see if additional information can
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be extracted that might speed up matching. Its arguments are:
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</P>
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<P>
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<pre>
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<i>code</i> A compiled regular expression
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<i>options</i> Options for <b>pcre_study()</b>
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<i>errptr</i> Where to put an error message
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</PRE>
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</P>
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<P>
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If the function returns NULL, either it could not find any additional
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information, or there was an error. You can tell the difference by looking at
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the error value. It is NULL in first case.
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</P>
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<P>
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There are currently no options defined; the value of the second argument should
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always be zero.
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</P>
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<P>
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There is a complete description of the PCRE API in the
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<a href="pcreapi.html"><b>pcreapi</b></a>
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page.
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