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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /><title>Text.Regex.PCRE.Light.Base</title><link href="ocean.css" rel="stylesheet" type="text/css" title="Ocean" /><script src="haddock-util.js" type="text/javascript"></script><script src="file:///usr/share/javascript/mathjax/MathJax.js" type="text/javascript"></script><script type="text/javascript">//<![CDATA[
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</script></head><body><div id="package-header"><ul class="links" id="page-menu"><li><a href="src/Text-Regex-PCRE-Light-Base.html">Source</a></li><li><a href="index.html">Contents</a></li><li><a href="doc-index.html">Index</a></li></ul><p class="caption">pcre-light-0.4.0.4: Portable regex library for Perl 5 compatible regular expressions</p></div><div id="content"><div id="module-header"><table class="info"><tr><th>Copyright</th><td>Copyright (c) 2007-2008, Don Stewart</td></tr><tr><th>Safe Haskell</th><td>None</td></tr><tr><th>Language</th><td>Haskell98</td></tr></table><p class="caption">Text.Regex.PCRE.Light.Base</p></div><div id="table-of-contents"><p class="caption">Contents</p><ul><li><a href="#g:1">A PCRE structure</a></li><li><a href="#g:2">C exports</a></li><li><a href="#g:3">PCRE Options, an abstract newtyped Num wrapper over a CInt</a></li><li><a href="#g:4">PCRE exec-time options, an abstract, newtyped Num wrapper over CInt</a></li><li><a href="#g:5">PCRE Errors</a></li><li><a href="#g:6">PCRE Info</a></li><li><a href="#g:7">PCRE Configuration</a></li><li><a href="#g:8">PCRE Extra</a></li></ul></div><div id="description"><p class="caption">Description</p><div class="doc"><p>Documentation based on <em>man pcreapi</em>, written by Philip Hazel, 2007.</p><p>License   : BSD3
 Maintainer:  Don Stewart <a href="dons@galois.com">dons@galois.com</a>
 Stability :  experimental
 Portability: CPP, FFI
 Tested with: GHC 6.8.2</p><p>Raw FFI bindings to PCRE functions and constants. </p></div></div><div id="synopsis"><p id="control.syn" class="caption expander" onclick="toggleSection('syn')">Synopsis</p><ul id="section.syn" class="hide" onclick="toggleSection('syn')"><li class="src short"><span class="keyword">type</span> <a href="#t:PCRE">PCRE</a> = ()</li><li class="src short"><span class="keyword">data</span> <a href="#t:Regex">Regex</a> = <a href="#v:Regex">Regex</a> !(<a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Foreign-ForeignPtr.html#t:ForeignPtr">ForeignPtr</a> <a href="Text-Regex-PCRE-Light-Base.html#t:PCRE">PCRE</a>) !<a href="file:///usr/share/doc/ghc-doc/html/libraries/bytestring-0.10.8.1/Data-ByteString.html#t:ByteString">ByteString</a></li><li class="src short"><a href="#v:c_pcre_compile">c_pcre_compile</a> :: <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Foreign-C-String.html#t:CString">CString</a> -&gt; <a href="Text-Regex-PCRE-Light-Base.html#t:PCREOption">PCREOption</a> -&gt; <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Foreign-Ptr.html#t:Ptr">Ptr</a> <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Foreign-C-String.html#t:CString">CString</a> -&gt; <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Foreign-Ptr.html#t:Ptr">Ptr</a> <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Foreign-C-Types.html#t:CInt">CInt</a> -&gt; <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Foreign-Ptr.html#t:Ptr">Ptr</a> <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Word.html#t:Word8">Word8</a> -&gt; <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/System-IO.html#t:IO">IO</a> (<a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Foreign-Ptr.html#t:Ptr">Ptr</a> <a href="Text-Regex-PCRE-Light-Base.html#t:PCRE">PCRE</a>)</li><li class="src short"><a href="#v:c_pcre_exec">c_pcre_exec</a> :: <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Foreign-Ptr.html#t:Ptr">Ptr</a> <a href="Text-Regex-PCRE-Light-Base.html#t:PCRE">PCRE</a> -&gt; <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Foreign-Ptr.html#t:Ptr">Ptr</a> PCREExtra -&gt; <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Foreign-Ptr.html#t:Ptr">Ptr</a> <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Word.html#t:Word8">Word8</a> -&gt; <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Foreign-C-Types.html#t:CInt">CInt</a> -&gt; <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Foreign-C-Types.html#t:CInt">CInt</a> -&gt; <a href="Text-Regex-PCRE-Light-Base.html#t:PCREExecOption">PCREExecOption</a> -&gt; <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Foreign-Ptr.html#t:Ptr">Ptr</a> <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Foreign-C-Types.html#t:CInt">CInt</a> -&gt; <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Foreign-C-Types.html#t:CInt">CInt</a> -&gt; <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/System-IO.html#t:IO">IO</a> <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Foreign-C-Types.html#t:CInt">CInt</a></li><li class="src short"><a href="#v:c_pcre_fullinfo">c_pcre_fullinfo</a> :: <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Foreign-Ptr.html#t:Ptr">Ptr</a> <a href="Text-Regex-PCRE-Light-Base.html#t:PCRE">PCRE</a> -&gt; <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Foreign-Ptr.html#t:Ptr">Ptr</a> PCREExtra -&gt; <a href="Text-Regex-PCRE-Light-Base.html#t:PCREInfo">PCREInfo</a> -&gt; <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Foreign-Ptr.html#t:Ptr">Ptr</a> a -&gt; <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/System-IO.html#t:IO">IO</a> <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Foreign-C-Types.html#t:CInt">CInt</a></li><li class="src short"><span class="keyword">data</span> <a href="#t:PCREOption">PCREOption</a></li><li class="src short"><a href="#v:combineOptions">combineOptions</a> :: [<a href="Text-Regex-PCRE-Light-Base.html#t:PCREOption">PCREOption</a>] -&gt; <a href="Text-Regex-PCRE-Light-Base.html#t:PCREOption">PCREOption</a></li><li class="src short"><a href="#v:anchored">anchored</a> :: <a href="Text-Regex-PCRE-Light-Base.html#t:PCREOption">PCREOption</a></li><li class="src short"><a href="#v:auto_callout">auto_callout</a> :: <a href="Text-Regex-PCRE-Light-Base.html#t:PCREOption">PCREOption</a></li><li class="src short"><a href="#v:caseless">caseless</a> :: <a href="Text-Regex-PCRE-Light-Base.html#t:PCREOption">PCREOption</a></li><li class="src short"><a href="#v:dollar_endonly">dollar_endonly</a> :: <a href="Text-Regex-PCRE-Light-Base.html#t:PCREOption">PCREOption</a></li><li class="src short"><a href="#v:dotall">dotall</a> :: <a href="Text-Regex-PCRE-Light-Base.html#t:PCREOption">PCREOption</a></li><li class="src short"><a href="#v:dupnames">dupnames</a> :: <a href="Text-Regex-PCRE-Light-Base.html#t:PCREOption">PCREOption</a></li><li class="src short"><a href="#v:extended">extended</a> :: <a href="Text-Regex-PCRE-Light-Base.html#t:PCREOption">PCREOption</a></li><li class="src short"><a href="#v:extra">extra</a> :: <a href="Text-Regex-PCRE-Light-Base.html#t:PCREOption">PCREOption</a></li><li class="src short"><a href="#v:firstline">firstline</a> :: <a href="Text-Regex-PCRE-Light-Base.html#t:PCREOption">PCREOption</a></li><li class="src short"><a href="#v:multiline">multiline</a> :: <a href="Text-Regex-PCRE-Light-Base.html#t:PCREOption">PCREOption</a></li><li class="src short"><a href="#v:newline_cr">newline_cr</a> :: <a href="Text-Regex-PCRE-Light-Base.html#t:PCREOption">PCREOption</a></li><li class="src short"><a href="#v:newline_crlf">newline_crlf</a> :: <a href="Text-Regex-PCRE-Light-Base.html#t:PCREOption">PCREOption</a></li><li class="src short"><a href="#v:newline_lf">newline_lf</a> :: <a href="Text-Regex-PCRE-Light-Base.html#t:PCREOption">PCREOption</a></li><li class="src short"><a href="#v:no_auto_capture">no_auto_capture</a> :: <a href="Text-Regex-PCRE-Light-Base.html#t:PCREOption">PCREOption</a></li><li class="src short"><a href="#v:ungreedy">ungreedy</a> :: <a href="Text-Regex-PCRE-Light-Base.html#t:PCREOption">PCREOption</a></li><li class="src short"><a href="#v:utf8">utf8</a> :: <a href="Text-Regex-PCRE-Light-Base.html#t:PCREOption">PCREOption</a></li><li class="src short"><a href="#v:no_utf8_check">no_utf8_check</a> :: <a href="Text-Regex-PCRE-Light-Base.html#t:PCREOption">PCREOption</a></li><li class="src short"><span class="keyword">data</span> <a href="#t:PCREExecOption">PCREExecOption</a></li><li class="src short"><a href="#v:combineExecOptions">combineExecOptions</a> :: [<a href="Text-Regex-PCRE-Light-Base.html#t:PCREExecOption">PCREExecOption</a>] -&gt; <a href="Text-Regex-PCRE-Light-Base.html#t:PCREExecOption">PCREExecOption</a></li><li class="src short"><a href="#v:exec_anchored">exec_anchored</a> :: <a href="Text-Regex-PCRE-Light-Base.html#t:PCREExecOption">PCREExecOption</a></li><li class="src short"><a href="#v:exec_newline_cr">exec_newline_cr</a> :: <a href="Text-Regex-PCRE-Light-Base.html#t:PCREExecOption">PCREExecOption</a></li><li class="src short"><a href="#v:exec_newline_crlf">exec_newline_crlf</a> :: <a href="Text-Regex-PCRE-Light-Base.html#t:PCREExecOption">PCREExecOption</a></li><li class="src short"><a href="#v:exec_newline_lf">exec_newline_lf</a> :: <a href="Text-Regex-PCRE-Light-Base.html#t:PCREExecOption">PCREExecOption</a></li><li class="src short"><a href="#v:exec_notbol">exec_notbol</a> :: <a href="Text-Regex-PCRE-Light-Base.html#t:PCREExecOption">PCREExecOption</a></li><li class="src short"><a href="#v:exec_noteol">exec_noteol</a> :: <a href="Text-Regex-PCRE-Light-Base.html#t:PCREExecOption">PCREExecOption</a></li><li class="src short"><a href="#v:exec_notempty">exec_notempty</a> :: <a href="Text-Regex-PCRE-Light-Base.html#t:PCREExecOption">PCREExecOption</a></li><li class="src short"><a href="#v:exec_no_utf8_check">exec_no_utf8_check</a> :: <a href="Text-Regex-PCRE-Light-Base.html#t:PCREExecOption">PCREExecOption</a></li><li class="src short"><a href="#v:exec_partial">exec_partial</a> :: <a href="Text-Regex-PCRE-Light-Base.html#t:PCREExecOption">PCREExecOption</a></li><li class="src short"><span class="keyword">type</span> <a href="#t:PCREError">PCREError</a> = <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Foreign-C-Types.html#t:CInt">CInt</a></li><li class="src short"><a href="#v:error_nomatch">error_nomatch</a> :: <a href="Text-Regex-PCRE-Light-Base.html#t:PCREError">PCREError</a></li><li class="src short"><a href="#v:error_null">error_null</a> :: <a href="Text-Regex-PCRE-Light-Base.html#t:PCREError">PCREError</a></li><li class="src short"><a href="#v:error_badoption">error_badoption</a> :: <a href="Text-Regex-PCRE-Light-Base.html#t:PCREError">PCREError</a></li><li class="src short"><a href="#v:error_badmagic">error_badmagic</a> :: <a href="Text-Regex-PCRE-Light-Base.html#t:PCREError">PCREError</a></li><li class="src short"><a href="#v:error_unknown_node">error_unknown_node</a> :: <a href="Text-Regex-PCRE-Light-Base.html#t:PCREError">PCREError</a></li><li class="src short"><a href="#v:error_nomemory">error_nomemory</a> :: <a href="Text-Regex-PCRE-Light-Base.html#t:PCREError">PCREError</a></li><li class="src short"><a href="#v:error_nosubstring">error_nosubstring</a> :: <a href="Text-Regex-PCRE-Light-Base.html#t:PCREError">PCREError</a></li><li class="src short"><a href="#v:error_matchlimit">error_matchlimit</a> :: <a href="Text-Regex-PCRE-Light-Base.html#t:PCREError">PCREError</a></li><li class="src short"><a href="#v:error_callout">error_callout</a> :: <a href="Text-Regex-PCRE-Light-Base.html#t:PCREError">PCREError</a></li><li class="src short"><a href="#v:error_badutf8">error_badutf8</a> :: <a href="Text-Regex-PCRE-Light-Base.html#t:PCREError">PCREError</a></li><li class="src short"><a href="#v:error_badutf8_offset">error_badutf8_offset</a> :: <a href="Text-Regex-PCRE-Light-Base.html#t:PCREError">PCREError</a></li><li class="src short"><a href="#v:error_partial">error_partial</a> :: <a href="Text-Regex-PCRE-Light-Base.html#t:PCREError">PCREError</a></li><li class="src short"><a href="#v:error_badpartial">error_badpartial</a> :: <a href="Text-Regex-PCRE-Light-Base.html#t:PCREError">PCREError</a></li><li class="src short"><a href="#v:error_internal">error_internal</a> :: <a href="Text-Regex-PCRE-Light-Base.html#t:PCREError">PCREError</a></li><li class="src short"><a href="#v:error_badcount">error_badcount</a> :: <a href="Text-Regex-PCRE-Light-Base.html#t:PCREError">PCREError</a></li><li class="src short"><a href="#v:error_dfa_uitem">error_dfa_uitem</a> :: <a href="Text-Regex-PCRE-Light-Base.html#t:PCREError">PCREError</a></li><li class="src short"><a href="#v:error_dfa_ucond">error_dfa_ucond</a> :: <a href="Text-Regex-PCRE-Light-Base.html#t:PCREError">PCREError</a></li><li class="src short"><a href="#v:error_dfa_umlimit">error_dfa_umlimit</a> :: <a href="Text-Regex-PCRE-Light-Base.html#t:PCREError">PCREError</a></li><li class="src short"><a href="#v:error_dfa_wssize">error_dfa_wssize</a> :: <a href="Text-Regex-PCRE-Light-Base.html#t:PCREError">PCREError</a></li><li class="src short"><a href="#v:error_dfa_recurse">error_dfa_recurse</a> :: <a href="Text-Regex-PCRE-Light-Base.html#t:PCREError">PCREError</a></li><li class="src short"><a href="#v:error_recursionlimit">error_recursionlimit</a> :: <a href="Text-Regex-PCRE-Light-Base.html#t:PCREError">PCREError</a></li><li class="src short"><span class="keyword">type</span> <a href="#t:PCREInfo">PCREInfo</a> = <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Foreign-C-Types.html#t:CInt">CInt</a></li><li class="src short"><a href="#v:info_options">info_options</a> :: <a href="Text-Regex-PCRE-Light-Base.html#t:PCREInfo">PCREInfo</a></li><li class="src short"><a href="#v:info_size">info_size</a> :: <a href="Text-Regex-PCRE-Light-Base.html#t:PCREInfo">PCREInfo</a></li><li class="src short"><a href="#v:info_capturecount">info_capturecount</a> :: <a href="Text-Regex-PCRE-Light-Base.html#t:PCREInfo">PCREInfo</a></li><li class="src short"><a href="#v:info_backrefmax">info_backrefmax</a> :: <a href="Text-Regex-PCRE-Light-Base.html#t:PCREInfo">PCREInfo</a></li><li class="src short"><a href="#v:info_firstbyte">info_firstbyte</a> :: <a href="Text-Regex-PCRE-Light-Base.html#t:PCREInfo">PCREInfo</a></li><li class="src short"><a href="#v:info_firstchar">info_firstchar</a> :: <a href="Text-Regex-PCRE-Light-Base.html#t:PCREInfo">PCREInfo</a></li><li class="src short"><a href="#v:info_firsttable">info_firsttable</a> :: <a href="Text-Regex-PCRE-Light-Base.html#t:PCREInfo">PCREInfo</a></li><li class="src short"><a href="#v:info_lastliteral">info_lastliteral</a> :: <a href="Text-Regex-PCRE-Light-Base.html#t:PCREInfo">PCREInfo</a></li><li class="src short"><a href="#v:info_nameentrysize">info_nameentrysize</a> :: <a href="Text-Regex-PCRE-Light-Base.html#t:PCREInfo">PCREInfo</a></li><li class="src short"><a href="#v:info_namecount">info_namecount</a> :: <a href="Text-Regex-PCRE-Light-Base.html#t:PCREInfo">PCREInfo</a></li><li class="src short"><a href="#v:info_nametable">info_nametable</a> :: <a href="Text-Regex-PCRE-Light-Base.html#t:PCREInfo">PCREInfo</a></li><li class="src short"><a href="#v:info_studysize">info_studysize</a> :: <a href="Text-Regex-PCRE-Light-Base.html#t:PCREInfo">PCREInfo</a></li><li class="src short"><a href="#v:info_default_tables">info_default_tables</a> :: <a href="Text-Regex-PCRE-Light-Base.html#t:PCREInfo">PCREInfo</a></li><li class="src short"><span class="keyword">type</span> <a href="#t:PCREConfig">PCREConfig</a> = <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Foreign-C-Types.html#t:CInt">CInt</a></li><li class="src short"><a href="#v:config_utf8">config_utf8</a> :: <a href="Text-Regex-PCRE-Light-Base.html#t:PCREConfig">PCREConfig</a></li><li class="src short"><a href="#v:config_newline">config_newline</a> :: <a href="Text-Regex-PCRE-Light-Base.html#t:PCREConfig">PCREConfig</a></li><li class="src short"><a href="#v:config_link_size">config_link_size</a> :: <a href="Text-Regex-PCRE-Light-Base.html#t:PCREConfig">PCREConfig</a></li><li class="src short"><a href="#v:config_posix_malloc_threshold">config_posix_malloc_threshold</a> :: <a href="Text-Regex-PCRE-Light-Base.html#t:PCREConfig">PCREConfig</a></li><li class="src short"><a href="#v:config_match_limit">config_match_limit</a> :: <a href="Text-Regex-PCRE-Light-Base.html#t:PCREConfig">PCREConfig</a></li><li class="src short"><a href="#v:config_stackrecurse">config_stackrecurse</a> :: <a href="Text-Regex-PCRE-Light-Base.html#t:PCREConfig">PCREConfig</a></li><li class="src short"><a href="#v:config_unicode_properties">config_unicode_properties</a> :: <a href="Text-Regex-PCRE-Light-Base.html#t:PCREConfig">PCREConfig</a></li><li class="src short"><a href="#v:config_match_limit_recursion">config_match_limit_recursion</a> :: <a href="Text-Regex-PCRE-Light-Base.html#t:PCREConfig">PCREConfig</a></li><li class="src short"><span class="keyword">type</span> <a href="#t:PCREExtraFlags">PCREExtraFlags</a> = <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Foreign-C-Types.html#t:CInt">CInt</a></li><li class="src short"><a href="#v:extra_study_data">extra_study_data</a> :: <a href="Text-Regex-PCRE-Light-Base.html#t:PCREExtraFlags">PCREExtraFlags</a></li><li class="src short"><a href="#v:extra_match_limit">extra_match_limit</a> :: <a href="Text-Regex-PCRE-Light-Base.html#t:PCREExtraFlags">PCREExtraFlags</a></li><li class="src short"><a href="#v:extra_callout_data">extra_callout_data</a> :: <a href="Text-Regex-PCRE-Light-Base.html#t:PCREExtraFlags">PCREExtraFlags</a></li><li class="src short"><a href="#v:extra_tables">extra_tables</a> :: <a href="Text-Regex-PCRE-Light-Base.html#t:PCREExtraFlags">PCREExtraFlags</a></li><li class="src short"><a href="#v:extra_match_limit_recursion">extra_match_limit_recursion</a> :: <a href="Text-Regex-PCRE-Light-Base.html#t:PCREExtraFlags">PCREExtraFlags</a></li><li class="src short"><a href="#v:size_of_cint">size_of_cint</a> :: <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Int.html#t:Int">Int</a></li></ul></div><div id="interface"><h1 id="g:1">A PCRE structure</h1><div class="top"><p class="src"><span class="keyword">type</span> <a id="t:PCRE" class="def">PCRE</a> = () <a href="src/Text-Regex-PCRE-Light-Base.html#PCRE" class="link">Source</a> <a href="#t:PCRE" class="selflink">#</a></p></div><div class="top"><p class="src"><span class="keyword">data</span> <a id="t:Regex" class="def">Regex</a> <a href="src/Text-Regex-PCRE-Light-Base.html#Regex" class="link">Source</a> <a href="#t:Regex" class="selflink">#</a></p><div class="doc"><p>An abstract pointer to a compiled PCRE Regex structure
 The structure allocated by the PCRE library will be deallocated
 automatically by the Haskell storage manager.</p></div><div class="subs constructors"><p class="caption">Constructors</p><table><tr><td class="src"><a id="v:Regex" class="def">Regex</a> !(<a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Foreign-ForeignPtr.html#t:ForeignPtr">ForeignPtr</a> <a href="Text-Regex-PCRE-Light-Base.html#t:PCRE">PCRE</a>) !<a href="file:///usr/share/doc/ghc-doc/html/libraries/bytestring-0.10.8.1/Data-ByteString.html#t:ByteString">ByteString</a></td><td class="doc empty">&nbsp;</td></tr></table></div><div class="subs instances"><p id="control.i:Regex" class="caption collapser" onclick="toggleSection('i:Regex')">Instances</p><div id="section.i:Regex" class="show"><table><tr><td class="src clearfix"><span class="inst-left"><span id="control.i:id:Regex:Eq:1" class="instance expander" onclick="toggleSection('i:id:Regex:Eq:1')"></span> <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Eq.html#t:Eq">Eq</a> <a href="Text-Regex-PCRE-Light-Base.html#t:Regex">Regex</a></span> <a href="src/Text-Regex-PCRE-Light-Base.html#line-118" class="link">Source</a> <a href="#t:Regex" class="selflink">#</a></td><td class="doc empty">&nbsp;</td></tr><tr><td colspan="2"><div id="section.i:id:Regex:Eq:1" class="inst-details hide"><div class="subs methods"><p class="caption">Methods</p><p class="src"><a href="#v:-61--61-">(==)</a> :: <a href="Text-Regex-PCRE-Light-Base.html#t:Regex">Regex</a> -&gt; <a href="Text-Regex-PCRE-Light-Base.html#t:Regex">Regex</a> -&gt; <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Bool.html#t:Bool">Bool</a> <a href="#v:-61--61-" class="selflink">#</a></p><p class="src"><a href="#v:-47--61-">(/=)</a> :: <a href="Text-Regex-PCRE-Light-Base.html#t:Regex">Regex</a> -&gt; <a href="Text-Regex-PCRE-Light-Base.html#t:Regex">Regex</a> -&gt; <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Bool.html#t:Bool">Bool</a> <a href="#v:-47--61-" class="selflink">#</a></p></div></div></td></tr><tr><td class="src clearfix"><span class="inst-left"><span id="control.i:id:Regex:Ord:2" class="instance expander" onclick="toggleSection('i:id:Regex:Ord:2')"></span> <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Ord.html#t:Ord">Ord</a> <a href="Text-Regex-PCRE-Light-Base.html#t:Regex">Regex</a></span> <a href="src/Text-Regex-PCRE-Light-Base.html#line-118" class="link">Source</a> <a href="#t:Regex" class="selflink">#</a></td><td class="doc empty">&nbsp;</td></tr><tr><td colspan="2"><div id="section.i:id:Regex:Ord:2" class="inst-details hide"><div class="subs methods"><p class="caption">Methods</p><p class="src"><a href="#v:compare">compare</a> :: <a href="Text-Regex-PCRE-Light-Base.html#t:Regex">Regex</a> -&gt; <a href="Text-Regex-PCRE-Light-Base.html#t:Regex">Regex</a> -&gt; <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Ord.html#t:Ordering">Ordering</a> <a href="#v:compare" class="selflink">#</a></p><p class="src"><a href="#v:-60-">(&lt;)</a> :: <a href="Text-Regex-PCRE-Light-Base.html#t:Regex">Regex</a> -&gt; <a href="Text-Regex-PCRE-Light-Base.html#t:Regex">Regex</a> -&gt; <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Bool.html#t:Bool">Bool</a> <a href="#v:-60-" class="selflink">#</a></p><p class="src"><a href="#v:-60--61-">(&lt;=)</a> :: <a href="Text-Regex-PCRE-Light-Base.html#t:Regex">Regex</a> -&gt; <a href="Text-Regex-PCRE-Light-Base.html#t:Regex">Regex</a> -&gt; <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Bool.html#t:Bool">Bool</a> <a href="#v:-60--61-" class="selflink">#</a></p><p class="src"><a href="#v:-62-">(&gt;)</a> :: <a href="Text-Regex-PCRE-Light-Base.html#t:Regex">Regex</a> -&gt; <a href="Text-Regex-PCRE-Light-Base.html#t:Regex">Regex</a> -&gt; <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Bool.html#t:Bool">Bool</a> <a href="#v:-62-" class="selflink">#</a></p><p class="src"><a href="#v:-62--61-">(&gt;=)</a> :: <a href="Text-Regex-PCRE-Light-Base.html#t:Regex">Regex</a> -&gt; <a href="Text-Regex-PCRE-Light-Base.html#t:Regex">Regex</a> -&gt; <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Bool.html#t:Bool">Bool</a> <a href="#v:-62--61-" class="selflink">#</a></p><p class="src"><a href="#v:max">max</a> :: <a href="Text-Regex-PCRE-Light-Base.html#t:Regex">Regex</a> -&gt; <a href="Text-Regex-PCRE-Light-Base.html#t:Regex">Regex</a> -&gt; <a href="Text-Regex-PCRE-Light-Base.html#t:Regex">Regex</a> <a href="#v:max" class="selflink">#</a></p><p class="src"><a href="#v:min">min</a> :: <a href="Text-Regex-PCRE-Light-Base.html#t:Regex">Regex</a> -&gt; <a href="Text-Regex-PCRE-Light-Base.html#t:Regex">Regex</a> -&gt; <a href="Text-Regex-PCRE-Light-Base.html#t:Regex">Regex</a> <a href="#v:min" class="selflink">#</a></p></div></div></td></tr><tr><td class="src clearfix"><span class="inst-left"><span id="control.i:id:Regex:Show:3" class="instance expander" onclick="toggleSection('i:id:Regex:Show:3')"></span> <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Text-Show.html#t:Show">Show</a> <a href="Text-Regex-PCRE-Light-Base.html#t:Regex">Regex</a></span> <a href="src/Text-Regex-PCRE-Light-Base.html#line-118" class="link">Source</a> <a href="#t:Regex" class="selflink">#</a></td><td class="doc empty">&nbsp;</td></tr><tr><td colspan="2"><div id="section.i:id:Regex:Show:3" class="inst-details hide"><div class="subs methods"><p class="caption">Methods</p><p class="src"><a href="#v:showsPrec">showsPrec</a> :: <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Int.html#t:Int">Int</a> -&gt; <a href="Text-Regex-PCRE-Light-Base.html#t:Regex">Regex</a> -&gt; <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Text-Show.html#t:ShowS">ShowS</a> <a href="#v:showsPrec" class="selflink">#</a></p><p class="src"><a href="#v:show">show</a> :: <a href="Text-Regex-PCRE-Light-Base.html#t:Regex">Regex</a> -&gt; <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-String.html#t:String">String</a> <a href="#v:show" class="selflink">#</a></p><p class="src"><a href="#v:showList">showList</a> :: [<a href="Text-Regex-PCRE-Light-Base.html#t:Regex">Regex</a>] -&gt; <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Text-Show.html#t:ShowS">ShowS</a> <a href="#v:showList" class="selflink">#</a></p></div></div></td></tr></table></div></div></div><h1 id="g:2">C exports</h1><div class="top"><p class="src"><a id="v:c_pcre_compile" class="def">c_pcre_compile</a> :: <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Foreign-C-String.html#t:CString">CString</a> -&gt; <a href="Text-Regex-PCRE-Light-Base.html#t:PCREOption">PCREOption</a> -&gt; <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Foreign-Ptr.html#t:Ptr">Ptr</a> <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Foreign-C-String.html#t:CString">CString</a> -&gt; <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Foreign-Ptr.html#t:Ptr">Ptr</a> <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Foreign-C-Types.html#t:CInt">CInt</a> -&gt; <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Foreign-Ptr.html#t:Ptr">Ptr</a> <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Word.html#t:Word8">Word8</a> -&gt; <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/System-IO.html#t:IO">IO</a> (<a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Foreign-Ptr.html#t:Ptr">Ptr</a> <a href="Text-Regex-PCRE-Light-Base.html#t:PCRE">PCRE</a>) <a href="src/Text-Regex-PCRE-Light-Base.html#c_pcre_compile" class="link">Source</a> <a href="#v:c_pcre_compile" class="selflink">#</a></p><div class="doc"><p>Compile a pattern to an internal form. The pattern is a C string
 terminated by a binary zero. A pointer to a single block of memory that is
 obtained via pcre_malloc is returned. It is up to the caller to free
 the memory (via pcre_free) when it is no longer required</p><p>The options argument contains various bit settings that affect the
 compilation. It should be zero if no options are required.</p><p>If errptr is NULL, pcre_compile() returns NULL immediately.
 Otherwise, if compilation of a pattern fails, pcre_compile() returns NULL,
 and sets the variable pointed to by errptr to point to a textual error
 message.</p><p>The offset from the start of the pattern to the character where the error
 was discovered is placed in the variable pointed to by erroffset, which must
 not be NULL.</p></div></div><div class="top"><p class="src"><a id="v:c_pcre_exec" class="def">c_pcre_exec</a> :: <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Foreign-Ptr.html#t:Ptr">Ptr</a> <a href="Text-Regex-PCRE-Light-Base.html#t:PCRE">PCRE</a> -&gt; <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Foreign-Ptr.html#t:Ptr">Ptr</a> PCREExtra -&gt; <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Foreign-Ptr.html#t:Ptr">Ptr</a> <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Word.html#t:Word8">Word8</a> -&gt; <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Foreign-C-Types.html#t:CInt">CInt</a> -&gt; <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Foreign-C-Types.html#t:CInt">CInt</a> -&gt; <a href="Text-Regex-PCRE-Light-Base.html#t:PCREExecOption">PCREExecOption</a> -&gt; <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Foreign-Ptr.html#t:Ptr">Ptr</a> <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Foreign-C-Types.html#t:CInt">CInt</a> -&gt; <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Foreign-C-Types.html#t:CInt">CInt</a> -&gt; <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/System-IO.html#t:IO">IO</a> <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Foreign-C-Types.html#t:CInt">CInt</a> <a href="src/Text-Regex-PCRE-Light-Base.html#c_pcre_exec" class="link">Source</a> <a href="#v:c_pcre_exec" class="selflink">#</a></p><div class="doc"><p>This function matches a compiled regular expression
 against a given subject string, using a matching algorithm
 that is similar to Perl's. It returns offsets to captured
 substrings.</p><p>Its arguments are, in order:</p><ul><li><code>code</code>        Points to the compiled pattern (result of pcre_compile)</li><li><code><a href="Text-Regex-PCRE-Light-Base.html#v:extra">extra</a></code>       Points to an associated pcre_extra structure (result of pcre_study), or is NULL</li><li><code>subject</code>      Points to the subject string</li><li><code><a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Foldable.html#v:length">length</a></code>       Length of the subject string, in bytes</li><li><code>startoffset</code>  Offset in bytes in the subject at which to start matching</li><li><code>options</code>      Option bits</li><li><code>ovector</code>      Points to a vector of ints for result substrings</li><li><code>ovecsize</code>     Number of elements in the vector (a  multiple of 3)</li></ul><p>Note, subject not required to be null terminated.</p></div></div><div class="top"><p class="src"><a id="v:c_pcre_fullinfo" class="def">c_pcre_fullinfo</a> :: <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Foreign-Ptr.html#t:Ptr">Ptr</a> <a href="Text-Regex-PCRE-Light-Base.html#t:PCRE">PCRE</a> -&gt; <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Foreign-Ptr.html#t:Ptr">Ptr</a> PCREExtra -&gt; <a href="Text-Regex-PCRE-Light-Base.html#t:PCREInfo">PCREInfo</a> -&gt; <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Foreign-Ptr.html#t:Ptr">Ptr</a> a -&gt; <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/System-IO.html#t:IO">IO</a> <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Foreign-C-Types.html#t:CInt">CInt</a> <a href="src/Text-Regex-PCRE-Light-Base.html#c_pcre_fullinfo" class="link">Source</a> <a href="#v:c_pcre_fullinfo" class="selflink">#</a></p><div class="doc"><p>Return information about a compiled pattern</p></div></div><h1 id="g:3">PCRE Options, an abstract newtyped Num wrapper over a CInt</h1><div class="top"><p class="src"><span class="keyword">data</span> <a id="t:PCREOption" class="def">PCREOption</a> <a href="src/Text-Regex-PCRE-Light-Base.html#PCREOption" class="link">Source</a> <a href="#t:PCREOption" class="selflink">#</a></p><div class="doc"><p>A type for PCRE compile-time options. These are newtyped CInts,
 which can be bitwise-or'd together, using '(Data.Bits..|.)'</p></div><div class="subs instances"><p id="control.i:PCREOption" class="caption collapser" onclick="toggleSection('i:PCREOption')">Instances</p><div id="section.i:PCREOption" class="show"><table><tr><td class="src clearfix"><span class="inst-left"><span id="control.i:id:PCREOption:Eq:1" class="instance expander" onclick="toggleSection('i:id:PCREOption:Eq:1')"></span> <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Eq.html#t:Eq">Eq</a> <a href="Text-Regex-PCRE-Light-Base.html#t:PCREOption">PCREOption</a></span> <a href="src/Text-Regex-PCRE-Light-Base.html#line-129" class="link">Source</a> <a href="#t:PCREOption" class="selflink">#</a></td><td class="doc empty">&nbsp;</td></tr><tr><td colspan="2"><div id="section.i:id:PCREOption:Eq:1" class="inst-details hide"><div class="subs methods"><p class="caption">Methods</p><p class="src"><a href="#v:-61--61-">(==)</a> :: <a href="Text-Regex-PCRE-Light-Base.html#t:PCREOption">PCREOption</a> -&gt; <a href="Text-Regex-PCRE-Light-Base.html#t:PCREOption">PCREOption</a> -&gt; <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Bool.html#t:Bool">Bool</a> <a href="#v:-61--61-" class="selflink">#</a></p><p class="src"><a href="#v:-47--61-">(/=)</a> :: <a href="Text-Regex-PCRE-Light-Base.html#t:PCREOption">PCREOption</a> -&gt; <a href="Text-Regex-PCRE-Light-Base.html#t:PCREOption">PCREOption</a> -&gt; <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Bool.html#t:Bool">Bool</a> <a href="#v:-47--61-" class="selflink">#</a></p></div></div></td></tr><tr><td class="src clearfix"><span class="inst-left"><span id="control.i:id:PCREOption:Ord:2" class="instance expander" onclick="toggleSection('i:id:PCREOption:Ord:2')"></span> <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Ord.html#t:Ord">Ord</a> <a href="Text-Regex-PCRE-Light-Base.html#t:PCREOption">PCREOption</a></span> <a href="src/Text-Regex-PCRE-Light-Base.html#line-129" class="link">Source</a> <a href="#t:PCREOption" class="selflink">#</a></td><td class="doc empty">&nbsp;</td></tr><tr><td colspan="2"><div id="section.i:id:PCREOption:Ord:2" class="inst-details hide"><div class="subs methods"><p class="caption">Methods</p><p class="src"><a href="#v:compare">compare</a> :: <a href="Text-Regex-PCRE-Light-Base.html#t:PCREOption">PCREOption</a> -&gt; <a href="Text-Regex-PCRE-Light-Base.html#t:PCREOption">PCREOption</a> -&gt; <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Ord.html#t:Ordering">Ordering</a> <a href="#v:compare" class="selflink">#</a></p><p class="src"><a href="#v:-60-">(&lt;)</a> :: <a href="Text-Regex-PCRE-Light-Base.html#t:PCREOption">PCREOption</a> -&gt; <a href="Text-Regex-PCRE-Light-Base.html#t:PCREOption">PCREOption</a> -&gt; <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Bool.html#t:Bool">Bool</a> <a href="#v:-60-" class="selflink">#</a></p><p class="src"><a href="#v:-60--61-">(&lt;=)</a> :: <a href="Text-Regex-PCRE-Light-Base.html#t:PCREOption">PCREOption</a> -&gt; <a href="Text-Regex-PCRE-Light-Base.html#t:PCREOption">PCREOption</a> -&gt; <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Bool.html#t:Bool">Bool</a> <a href="#v:-60--61-" class="selflink">#</a></p><p class="src"><a href="#v:-62-">(&gt;)</a> :: <a href="Text-Regex-PCRE-Light-Base.html#t:PCREOption">PCREOption</a> -&gt; <a href="Text-Regex-PCRE-Light-Base.html#t:PCREOption">PCREOption</a> -&gt; <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Bool.html#t:Bool">Bool</a> <a href="#v:-62-" class="selflink">#</a></p><p class="src"><a href="#v:-62--61-">(&gt;=)</a> :: <a href="Text-Regex-PCRE-Light-Base.html#t:PCREOption">PCREOption</a> -&gt; <a href="Text-Regex-PCRE-Light-Base.html#t:PCREOption">PCREOption</a> -&gt; <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Bool.html#t:Bool">Bool</a> <a href="#v:-62--61-" class="selflink">#</a></p><p class="src"><a href="#v:max">max</a> :: <a href="Text-Regex-PCRE-Light-Base.html#t:PCREOption">PCREOption</a> -&gt; <a href="Text-Regex-PCRE-Light-Base.html#t:PCREOption">PCREOption</a> -&gt; <a href="Text-Regex-PCRE-Light-Base.html#t:PCREOption">PCREOption</a> <a href="#v:max" class="selflink">#</a></p><p class="src"><a href="#v:min">min</a> :: <a href="Text-Regex-PCRE-Light-Base.html#t:PCREOption">PCREOption</a> -&gt; <a href="Text-Regex-PCRE-Light-Base.html#t:PCREOption">PCREOption</a> -&gt; <a href="Text-Regex-PCRE-Light-Base.html#t:PCREOption">PCREOption</a> <a href="#v:min" class="selflink">#</a></p></div></div></td></tr><tr><td class="src clearfix"><span class="inst-left"><span id="control.i:id:PCREOption:Read:3" class="instance expander" onclick="toggleSection('i:id:PCREOption:Read:3')"></span> <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Text-Read.html#t:Read">Read</a> <a href="Text-Regex-PCRE-Light-Base.html#t:PCREOption">PCREOption</a></span> <a href="src/Text-Regex-PCRE-Light-Base.html#line-129" class="link">Source</a> <a href="#t:PCREOption" class="selflink">#</a></td><td class="doc empty">&nbsp;</td></tr><tr><td colspan="2"><div id="section.i:id:PCREOption:Read:3" class="inst-details hide"><div class="subs methods"><p class="caption">Methods</p><p class="src"><a href="#v:readsPrec">readsPrec</a> :: <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Int.html#t:Int">Int</a> -&gt; <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Text-ParserCombinators-ReadP.html#t:ReadS">ReadS</a> <a href="Text-Regex-PCRE-Light-Base.html#t:PCREOption">PCREOption</a> <a href="#v:readsPrec" class="selflink">#</a></p><p class="src"><a href="#v:readList">readList</a> :: <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Text-ParserCombinators-ReadP.html#t:ReadS">ReadS</a> [<a href="Text-Regex-PCRE-Light-Base.html#t:PCREOption">PCREOption</a>] <a href="#v:readList" class="selflink">#</a></p><p class="src"><a href="#v:readPrec">readPrec</a> :: <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Text-ParserCombinators-ReadPrec.html#t:ReadPrec">ReadPrec</a> <a href="Text-Regex-PCRE-Light-Base.html#t:PCREOption">PCREOption</a> <a href="#v:readPrec" class="selflink">#</a></p><p class="src"><a href="#v:readListPrec">readListPrec</a> :: <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Text-ParserCombinators-ReadPrec.html#t:ReadPrec">ReadPrec</a> [<a href="Text-Regex-PCRE-Light-Base.html#t:PCREOption">PCREOption</a>] <a href="#v:readListPrec" class="selflink">#</a></p></div></div></td></tr><tr><td class="src clearfix"><span class="inst-left"><span id="control.i:id:PCREOption:Show:4" class="instance expander" onclick="toggleSection('i:id:PCREOption:Show:4')"></span> <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Text-Show.html#t:Show">Show</a> <a href="Text-Regex-PCRE-Light-Base.html#t:PCREOption">PCREOption</a></span> <a href="src/Text-Regex-PCRE-Light-Base.html#line-129" class="link">Source</a> <a href="#t:PCREOption" class="selflink">#</a></td><td class="doc empty">&nbsp;</td></tr><tr><td colspan="2"><div id="section.i:id:PCREOption:Show:4" class="inst-details hide"><div class="subs methods"><p class="caption">Methods</p><p class="src"><a href="#v:showsPrec">showsPrec</a> :: <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Int.html#t:Int">Int</a> -&gt; <a href="Text-Regex-PCRE-Light-Base.html#t:PCREOption">PCREOption</a> -&gt; <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Text-Show.html#t:ShowS">ShowS</a> <a href="#v:showsPrec" class="selflink">#</a></p><p class="src"><a href="#v:show">show</a> :: <a href="Text-Regex-PCRE-Light-Base.html#t:PCREOption">PCREOption</a> -&gt; <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-String.html#t:String">String</a> <a href="#v:show" class="selflink">#</a></p><p class="src"><a href="#v:showList">showList</a> :: [<a href="Text-Regex-PCRE-Light-Base.html#t:PCREOption">PCREOption</a>] -&gt; <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Text-Show.html#t:ShowS">ShowS</a> <a href="#v:showList" class="selflink">#</a></p></div></div></td></tr></table></div></div></div><div class="top"><p class="src"><a id="v:combineOptions" class="def">combineOptions</a> :: [<a href="Text-Regex-PCRE-Light-Base.html#t:PCREOption">PCREOption</a>] -&gt; <a href="Text-Regex-PCRE-Light-Base.html#t:PCREOption">PCREOption</a> <a href="src/Text-Regex-PCRE-Light-Base.html#combineOptions" class="link">Source</a> <a href="#v:combineOptions" class="selflink">#</a></p><div class="doc"><p>Combine a list of options into a single option, using bitwise (.|.)</p></div></div><div class="top"><p class="src"><a id="v:anchored" class="def">anchored</a> :: <a href="Text-Regex-PCRE-Light-Base.html#t:PCREOption">PCREOption</a> <a href="src/Text-Regex-PCRE-Light-Base.html#anchored" class="link">Source</a> <a href="#v:anchored" class="selflink">#</a></p><div class="doc"><p><code><a href="Text-Regex-PCRE-Light-Base.html#v:anchored">anchored</a></code></p><p>If this bit is set, the pattern is forced to be <em>anchored</em>, that is,
 it is constrained to match only at the first matching point in the
 string that is being searched (the <em>subject string</em>). This effect can
 also be achieved by appropriate constructs in the pattern itself, which
 is the only way to do it in Perl.  </p></div></div><div class="top"><p class="src"><a id="v:auto_callout" class="def">auto_callout</a> :: <a href="Text-Regex-PCRE-Light-Base.html#t:PCREOption">PCREOption</a> <a href="src/Text-Regex-PCRE-Light-Base.html#auto_callout" class="link">Source</a> <a href="#v:auto_callout" class="selflink">#</a></p><div class="doc"><p><code><a href="Text-Regex-PCRE-Light-Base.html#v:auto_callout">auto_callout</a></code></p><p>If this bit is set, &quot;compile&quot; automatically inserts callout
 items, all with number 255, before each pattern item. For discussion
 of the callout facility, see the man pcrecallout documentation</p></div></div><div class="top"><p class="src"><a id="v:caseless" class="def">caseless</a> :: <a href="Text-Regex-PCRE-Light-Base.html#t:PCREOption">PCREOption</a> <a href="src/Text-Regex-PCRE-Light-Base.html#caseless" class="link">Source</a> <a href="#v:caseless" class="selflink">#</a></p><div class="doc"><p><code>bsr_anycrlf</code> and <code>bsr_unicode</code></p><p>These options (which are mutually exclusive) control what the \R escape
 sequence matches. The choice is either to match only CR, LF, or CRLF, or to
 match any Unicode new- line sequence. The default is specified when PCRE is
 built. It can be overridden from within the pattern, or by setting an option
 when a compiled pattern is matched.</p><p>bsr_anycrlf        :: PCREOption
 bsr_anycrlf        = PCREOption bsr_anycrlf_cint</p><p><code>bsr_unicode</code>. See <code>bse_anycrlf</code></p><p>bsr_unicode        :: PCREOption
 bsr_unicode        = PCREOption bsr_unicode_cint</p><p><code><a href="Text-Regex-PCRE-Light-Base.html#v:caseless">caseless</a></code></p><p>If this bit is set, letters in the pattern match both upper and lower case
 letters. It is equivalent to Perl's /i option, and it can be changed within a
 pattern by a (?i) option setting. In UTF-8 mode, PCRE always understands the
 concept of case for characters whose values are less than 128, so caseless
 matching is always possible. For characters with higher values, the concept of
 case is supported if PCRE is compiled with Unicode property sup- port, but not
 otherwise. If you want to use caseless matching for characters 128 and above,
 you must ensure that PCRE is compiled with Unicode property support as well as
 with UTF-8 support.</p></div></div><div class="top"><p class="src"><a id="v:dollar_endonly" class="def">dollar_endonly</a> :: <a href="Text-Regex-PCRE-Light-Base.html#t:PCREOption">PCREOption</a> <a href="src/Text-Regex-PCRE-Light-Base.html#dollar_endonly" class="link">Source</a> <a href="#v:dollar_endonly" class="selflink">#</a></p><div class="doc"><p><code><a href="Text-Regex-PCRE-Light-Base.html#v:dollar_endonly">dollar_endonly</a></code></p><p>If this bit is set, a dollar metacharacter in the pattern matches only at
 the end of the subject string. Without this option, a dollar also matches
 immediately before a newline at the end of the string (but not before any other
 newlines). The <code><a href="Text-Regex-PCRE-Light-Base.html#v:dollar_endonly">dollar_endonly</a></code> option is ignored if <code><a href="Text-Regex-PCRE-Light-Base.html#v:multiline">multiline</a></code>
 is set.  There is no equivalent to this option in Perl, and no way to set it
 within a pattern.</p></div></div><div class="top"><p class="src"><a id="v:dotall" class="def">dotall</a> :: <a href="Text-Regex-PCRE-Light-Base.html#t:PCREOption">PCREOption</a> <a href="src/Text-Regex-PCRE-Light-Base.html#dotall" class="link">Source</a> <a href="#v:dotall" class="selflink">#</a></p><div class="doc"><p><code><a href="Text-Regex-PCRE-Light-Base.html#v:dotall">dotall</a></code></p><p>If this bit is set, a dot metacharater in the pattern matches all
 characters, including those that indicate newline. Without it, a dot does
 not match when the current position is at a newline. This option is
 equivalent to Perl's /s option, and it can be changed within a pattern by a
 (?s) option setting. A negative class such as [^a] always matches newline
 characters, independent of the setting of this option.</p></div></div><div class="top"><p class="src"><a id="v:dupnames" class="def">dupnames</a> :: <a href="Text-Regex-PCRE-Light-Base.html#t:PCREOption">PCREOption</a> <a href="src/Text-Regex-PCRE-Light-Base.html#dupnames" class="link">Source</a> <a href="#v:dupnames" class="selflink">#</a></p><div class="doc"><p><code><a href="Text-Regex-PCRE-Light-Base.html#v:dupnames">dupnames</a></code></p><p>If this bit is set, names used to identify capturing subpatterns need not be
 unique. This can be helpful for certain types of pattern when it is known
 that only one instance of the named subpattern can ever be matched. There are
 more details of named subpatterns in the <em>man pcreapi</em> documentation.</p></div></div><div class="top"><p class="src"><a id="v:extended" class="def">extended</a> :: <a href="Text-Regex-PCRE-Light-Base.html#t:PCREOption">PCREOption</a> <a href="src/Text-Regex-PCRE-Light-Base.html#extended" class="link">Source</a> <a href="#v:extended" class="selflink">#</a></p><div class="doc"><p><code><a href="Text-Regex-PCRE-Light-Base.html#v:extended">extended</a></code></p><p>If this bit is set, whitespace data characters in the pattern are totally
 ignored except when escaped or inside a character class. Whitespace does not
 include the VT character (code 11). In addition, characters between an
 unescaped # outside a character class and the next newline, inclusive, are
 also ignored. This is equivalent to Perl's /x option, and it can be changed
within a pattern by a (?x) option setting.</p><p>This option makes it possible to include comments inside complicated
 patterns. Note, however, that this applies only to data characters. Whitespace
 characters may never appear within special character sequences in a pattern,
 for example within the sequence (?( which introduces a conditional subpattern.</p></div></div><div class="top"><p class="src"><a id="v:extra" class="def">extra</a> :: <a href="Text-Regex-PCRE-Light-Base.html#t:PCREOption">PCREOption</a> <a href="src/Text-Regex-PCRE-Light-Base.html#extra" class="link">Source</a> <a href="#v:extra" class="selflink">#</a></p><div class="doc"><p><code><a href="Text-Regex-PCRE-Light-Base.html#v:extra">extra</a></code></p><p>This option was invented in order to turn on additional functionality of
 PCRE that is incompatible with Perl, but it is currently of very little use.
 When set, any backslash in a pattern that is followed by a letter that has no
 special meaning causes an error, thus reserving these combinations for future
 expansion. By default, as in Perl, a backslash followed by a letter with no
 special meaning is treated as a literal. (Perl can, however, be persuaded to
 give a warning for this.) There are at present no other features controlled by
 this option. It can also be set by a (?X) option setting within a pattern. </p></div></div><div class="top"><p class="src"><a id="v:firstline" class="def">firstline</a> :: <a href="Text-Regex-PCRE-Light-Base.html#t:PCREOption">PCREOption</a> <a href="src/Text-Regex-PCRE-Light-Base.html#firstline" class="link">Source</a> <a href="#v:firstline" class="selflink">#</a></p><div class="doc"><p><code><a href="Text-Regex-PCRE-Light-Base.html#v:firstline">firstline</a></code></p><p>If this option is set, an unanchored pattern is required to match before or
 at the first newline in the subject string, though the matched text may
continue over the newline.</p></div></div><div class="top"><p class="src"><a id="v:multiline" class="def">multiline</a> :: <a href="Text-Regex-PCRE-Light-Base.html#t:PCREOption">PCREOption</a> <a href="src/Text-Regex-PCRE-Light-Base.html#multiline" class="link">Source</a> <a href="#v:multiline" class="selflink">#</a></p><div class="doc"><p><code><a href="Text-Regex-PCRE-Light-Base.html#v:multiline">multiline</a></code></p><p>By default, PCRE treats the subject string as consisting of a single line
 of characters (even if it actually contains newlines). The <em>start of line</em>
 metacharacter (^) matches only at the start of the string, while the <em>end of line</em>
  metacharacter ($) matches only at the end of the string, or before a
 terminating newline (unless <code><a href="Text-Regex-PCRE-Light-Base.html#v:dollar_endonly">dollar_endonly</a></code> is set). This is the same
 as Perl.</p><p>When <code><a href="Text-Regex-PCRE-Light-Base.html#v:multiline">multiline</a></code> it is set, the <em>start of line</em> and <em>end of line</em>
 constructs match immediately following or immediately before internal newlines
 in the subject string, respectively, as well as at the very start and end. This
 is equivalent to Perl's /m option, and it can be changed within a pattern by a
 (?m) option setting. If there are no newlines in a subject string, or no occur-
 rences of ^ or $ in a pattern, setting PCRE_MULTILINE has no effect.</p></div></div><div class="top"><p class="src"><a id="v:newline_cr" class="def">newline_cr</a> :: <a href="Text-Regex-PCRE-Light-Base.html#t:PCREOption">PCREOption</a> <a href="src/Text-Regex-PCRE-Light-Base.html#newline_cr" class="link">Source</a> <a href="#v:newline_cr" class="selflink">#</a></p><div class="doc"><p>newline_cr', <code><a href="Text-Regex-PCRE-Light-Base.html#v:newline_lf">newline_lf</a></code>, <code><a href="Text-Regex-PCRE-Light-Base.html#v:newline_crlf">newline_crlf</a></code>,
 <code>newline_anycrlf</code>, <code>newline_any</code></p><p>These options override the default newline definition that
 was chosen when PCRE was built. Setting the first or the
 second specifies that a newline is indicated by a single
 character (CR or LF, respectively). Setting <code><a href="Text-Regex-PCRE-Light-Base.html#v:newline_crlf">newline_crlf</a></code> specifies
 that a newline is indicated by the two-character CRLF sequence.
 Setting <code>newline_anycrlf</code>
 specifies that any of the three preceding sequences should
 be recognized. Setting <code>newline_any</code> specifies that any
 Unicode newline sequence should be recognized. The Unicode
 newline sequences are the three just mentioned, plus the
 single characters VT (vertical tab, U+000B), FF (formfeed,
 U+000C), NEL (next line, U+0085), LS (line separator,
 U+2028), and PS (paragraph separator, U+2029). The last
 two are recognized only in UTF-8 mode.</p><p>The newline setting in the options word uses three bits
 that are treated as a number, giving eight possibilities.
 Currently only six are used (default plus the five values
 above). This means that if you set more than one newline
 option, the combination may or may not be sensible. For
 example, <code><a href="Text-Regex-PCRE-Light-Base.html#v:newline_cr">newline_cr</a></code> with <code><a href="Text-Regex-PCRE-Light-Base.html#v:newline_lf">newline_lf</a></code> is equivalent to
 <code><a href="Text-Regex-PCRE-Light-Base.html#v:newline_crlf">newline_crlf</a></code>, but other combinations may yield unused numbers and
 cause an error.</p><p>The only time that a line break is specially recognized
 when compiling a pattern is if <code><a href="Text-Regex-PCRE-Light-Base.html#v:extended">extended</a></code> is set, and
 an unescaped # outside a character class is encountered.
 This indicates a comment that lasts until after the next
 line break sequence. In other circumstances, line break
 sequences are treated as literal data, except that in
 <code><a href="Text-Regex-PCRE-Light-Base.html#v:extended">extended</a></code> mode, both CR and LF are treated as whitespace characters
 and are therefore ignored.  -- </p><p>The newline option that is set at compile time becomes the
 default that is used for <code>exec</code> but it can be overridden.</p><p>newline_any        :: PCREOption
 newline_any        = PCREOption newline_any_cint</p><p><code>newline_anycrlf</code>, see <code>newline_any</code>
 newline_anycrlf    :: PCREOption
 newline_anycrlf    = PCREOption newline_anycrlf_cint</p><p><code><a href="Text-Regex-PCRE-Light-Base.html#v:newline_cr">newline_cr</a></code>, see <code>newline_any</code></p></div></div><div class="top"><p class="src"><a id="v:newline_crlf" class="def">newline_crlf</a> :: <a href="Text-Regex-PCRE-Light-Base.html#t:PCREOption">PCREOption</a> <a href="src/Text-Regex-PCRE-Light-Base.html#newline_crlf" class="link">Source</a> <a href="#v:newline_crlf" class="selflink">#</a></p><div class="doc"><p><code><a href="Text-Regex-PCRE-Light-Base.html#v:newline_crlf">newline_crlf</a></code>, see <code>newline_any</code></p></div></div><div class="top"><p class="src"><a id="v:newline_lf" class="def">newline_lf</a> :: <a href="Text-Regex-PCRE-Light-Base.html#t:PCREOption">PCREOption</a> <a href="src/Text-Regex-PCRE-Light-Base.html#newline_lf" class="link">Source</a> <a href="#v:newline_lf" class="selflink">#</a></p><div class="doc"><p><code><a href="Text-Regex-PCRE-Light-Base.html#v:newline_lf">newline_lf</a></code>, see <code>newline_any</code></p></div></div><div class="top"><p class="src"><a id="v:no_auto_capture" class="def">no_auto_capture</a> :: <a href="Text-Regex-PCRE-Light-Base.html#t:PCREOption">PCREOption</a> <a href="src/Text-Regex-PCRE-Light-Base.html#no_auto_capture" class="link">Source</a> <a href="#v:no_auto_capture" class="selflink">#</a></p><div class="doc"><p><code><a href="Text-Regex-PCRE-Light-Base.html#v:no_auto_capture">no_auto_capture</a></code></p><p>If this option is set, it disables the use of numbered
 capturing parentheses in the pattern. Any opening paren-
 thesis that is not followed by ? behaves as if it were
 followed by ?: but named parentheses can still be used for
 capturing (and they acquire numbers in the usual way).
 There is no equivalent of this option in Perl.</p></div></div><div class="top"><p class="src"><a id="v:ungreedy" class="def">ungreedy</a> :: <a href="Text-Regex-PCRE-Light-Base.html#t:PCREOption">PCREOption</a> <a href="src/Text-Regex-PCRE-Light-Base.html#ungreedy" class="link">Source</a> <a href="#v:ungreedy" class="selflink">#</a></p><div class="doc"><p><code><a href="Text-Regex-PCRE-Light-Base.html#v:ungreedy">ungreedy</a></code></p><p>This option inverts the <em>greediness</em> of the quantifiers so
 that they are not greedy by default, but become greedy if
 followed by <em>?</em>. It is not compatible with Perl. It can
 also be set by a (?U) option setting within the pattern.</p></div></div><div class="top"><p class="src"><a id="v:utf8" class="def">utf8</a> :: <a href="Text-Regex-PCRE-Light-Base.html#t:PCREOption">PCREOption</a> <a href="src/Text-Regex-PCRE-Light-Base.html#utf8" class="link">Source</a> <a href="#v:utf8" class="selflink">#</a></p><div class="doc"><p><code><a href="Text-Regex-PCRE-Light-Base.html#v:utf8">utf8</a></code></p><p>This option causes PCRE to regard both the pattern and the
 subject as strings of UTF-8 characters instead of single-byte character
 strings. However, it is available only when 
 PCRE is built to include UTF-8 support. If not, the use of
 this option provokes an error. Details of how this option
 changes the behaviour of PCRE are given in the section on
 UTF-8 support in the main pcre page.</p></div></div><div class="top"><p class="src"><a id="v:no_utf8_check" class="def">no_utf8_check</a> :: <a href="Text-Regex-PCRE-Light-Base.html#t:PCREOption">PCREOption</a> <a href="src/Text-Regex-PCRE-Light-Base.html#no_utf8_check" class="link">Source</a> <a href="#v:no_utf8_check" class="selflink">#</a></p><div class="doc"><p><code><a href="Text-Regex-PCRE-Light-Base.html#v:no_utf8_check">no_utf8_check</a></code></p><p>When PCRE_UTF8 is set, the validity of the pattern as a
 UTF-8 string is automatically checked. There is a discussion 
 about the validity of UTF-8 strings in the main pcre
 page. If an invalid UTF-8 sequence of bytes is found,
 compile() returns an error. If you already know that
 your pattern is valid, and you want to skip this check for
 performance reasons, you can set the <code><a href="Text-Regex-PCRE-Light-Base.html#v:no_utf8_check">no_utf8_check</a></code>
 option. When it is set, the effect of passing an invalid
 UTF-8 string as a pattern is undefined. It may cause your
 program to crash. Note that this option can also be passed
 to <code>exec</code>, to suppress the UTF-8 validity checking of subject strings.</p></div></div><h1 id="g:4">PCRE exec-time options, an abstract, newtyped Num wrapper over CInt</h1><div class="top"><p class="src"><span class="keyword">data</span> <a id="t:PCREExecOption" class="def">PCREExecOption</a> <a href="src/Text-Regex-PCRE-Light-Base.html#PCREExecOption" class="link">Source</a> <a href="#t:PCREExecOption" class="selflink">#</a></p><div class="subs instances"><p id="control.i:PCREExecOption" class="caption collapser" onclick="toggleSection('i:PCREExecOption')">Instances</p><div id="section.i:PCREExecOption" class="show"><table><tr><td class="src clearfix"><span class="inst-left"><span id="control.i:id:PCREExecOption:Eq:1" class="instance expander" onclick="toggleSection('i:id:PCREExecOption:Eq:1')"></span> <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Eq.html#t:Eq">Eq</a> <a href="Text-Regex-PCRE-Light-Base.html#t:PCREExecOption">PCREExecOption</a></span> <a href="src/Text-Regex-PCRE-Light-Base.html#line-432" class="link">Source</a> <a href="#t:PCREExecOption" class="selflink">#</a></td><td class="doc empty">&nbsp;</td></tr><tr><td colspan="2"><div id="section.i:id:PCREExecOption:Eq:1" class="inst-details hide"><div class="subs methods"><p class="caption">Methods</p><p class="src"><a href="#v:-61--61-">(==)</a> :: <a href="Text-Regex-PCRE-Light-Base.html#t:PCREExecOption">PCREExecOption</a> -&gt; <a href="Text-Regex-PCRE-Light-Base.html#t:PCREExecOption">PCREExecOption</a> -&gt; <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Bool.html#t:Bool">Bool</a> <a href="#v:-61--61-" class="selflink">#</a></p><p class="src"><a href="#v:-47--61-">(/=)</a> :: <a href="Text-Regex-PCRE-Light-Base.html#t:PCREExecOption">PCREExecOption</a> -&gt; <a href="Text-Regex-PCRE-Light-Base.html#t:PCREExecOption">PCREExecOption</a> -&gt; <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Bool.html#t:Bool">Bool</a> <a href="#v:-47--61-" class="selflink">#</a></p></div></div></td></tr><tr><td class="src clearfix"><span class="inst-left"><span id="control.i:id:PCREExecOption:Ord:2" class="instance expander" onclick="toggleSection('i:id:PCREExecOption:Ord:2')"></span> <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Ord.html#t:Ord">Ord</a> <a href="Text-Regex-PCRE-Light-Base.html#t:PCREExecOption">PCREExecOption</a></span> <a href="src/Text-Regex-PCRE-Light-Base.html#line-432" class="link">Source</a> <a href="#t:PCREExecOption" class="selflink">#</a></td><td class="doc empty">&nbsp;</td></tr><tr><td colspan="2"><div id="section.i:id:PCREExecOption:Ord:2" class="inst-details hide"><div class="subs methods"><p class="caption">Methods</p><p class="src"><a href="#v:compare">compare</a> :: <a href="Text-Regex-PCRE-Light-Base.html#t:PCREExecOption">PCREExecOption</a> -&gt; <a href="Text-Regex-PCRE-Light-Base.html#t:PCREExecOption">PCREExecOption</a> -&gt; <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Ord.html#t:Ordering">Ordering</a> <a href="#v:compare" class="selflink">#</a></p><p class="src"><a href="#v:-60-">(&lt;)</a> :: <a href="Text-Regex-PCRE-Light-Base.html#t:PCREExecOption">PCREExecOption</a> -&gt; <a href="Text-Regex-PCRE-Light-Base.html#t:PCREExecOption">PCREExecOption</a> -&gt; <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Bool.html#t:Bool">Bool</a> <a href="#v:-60-" class="selflink">#</a></p><p class="src"><a href="#v:-60--61-">(&lt;=)</a> :: <a href="Text-Regex-PCRE-Light-Base.html#t:PCREExecOption">PCREExecOption</a> -&gt; <a href="Text-Regex-PCRE-Light-Base.html#t:PCREExecOption">PCREExecOption</a> -&gt; <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Bool.html#t:Bool">Bool</a> <a href="#v:-60--61-" class="selflink">#</a></p><p class="src"><a href="#v:-62-">(&gt;)</a> :: <a href="Text-Regex-PCRE-Light-Base.html#t:PCREExecOption">PCREExecOption</a> -&gt; <a href="Text-Regex-PCRE-Light-Base.html#t:PCREExecOption">PCREExecOption</a> -&gt; <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Bool.html#t:Bool">Bool</a> <a href="#v:-62-" class="selflink">#</a></p><p class="src"><a href="#v:-62--61-">(&gt;=)</a> :: <a href="Text-Regex-PCRE-Light-Base.html#t:PCREExecOption">PCREExecOption</a> -&gt; <a href="Text-Regex-PCRE-Light-Base.html#t:PCREExecOption">PCREExecOption</a> -&gt; <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Bool.html#t:Bool">Bool</a> <a href="#v:-62--61-" class="selflink">#</a></p><p class="src"><a href="#v:max">max</a> :: <a href="Text-Regex-PCRE-Light-Base.html#t:PCREExecOption">PCREExecOption</a> -&gt; <a href="Text-Regex-PCRE-Light-Base.html#t:PCREExecOption">PCREExecOption</a> -&gt; <a href="Text-Regex-PCRE-Light-Base.html#t:PCREExecOption">PCREExecOption</a> <a href="#v:max" class="selflink">#</a></p><p class="src"><a href="#v:min">min</a> :: <a href="Text-Regex-PCRE-Light-Base.html#t:PCREExecOption">PCREExecOption</a> -&gt; <a href="Text-Regex-PCRE-Light-Base.html#t:PCREExecOption">PCREExecOption</a> -&gt; <a href="Text-Regex-PCRE-Light-Base.html#t:PCREExecOption">PCREExecOption</a> <a href="#v:min" class="selflink">#</a></p></div></div></td></tr><tr><td class="src clearfix"><span class="inst-left"><span id="control.i:id:PCREExecOption:Read:3" class="instance expander" onclick="toggleSection('i:id:PCREExecOption:Read:3')"></span> <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Text-Read.html#t:Read">Read</a> <a href="Text-Regex-PCRE-Light-Base.html#t:PCREExecOption">PCREExecOption</a></span> <a href="src/Text-Regex-PCRE-Light-Base.html#line-432" class="link">Source</a> <a href="#t:PCREExecOption" class="selflink">#</a></td><td class="doc empty">&nbsp;</td></tr><tr><td colspan="2"><div id="section.i:id:PCREExecOption:Read:3" class="inst-details hide"><div class="subs methods"><p class="caption">Methods</p><p class="src"><a href="#v:readsPrec">readsPrec</a> :: <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Int.html#t:Int">Int</a> -&gt; <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Text-ParserCombinators-ReadP.html#t:ReadS">ReadS</a> <a href="Text-Regex-PCRE-Light-Base.html#t:PCREExecOption">PCREExecOption</a> <a href="#v:readsPrec" class="selflink">#</a></p><p class="src"><a href="#v:readList">readList</a> :: <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Text-ParserCombinators-ReadP.html#t:ReadS">ReadS</a> [<a href="Text-Regex-PCRE-Light-Base.html#t:PCREExecOption">PCREExecOption</a>] <a href="#v:readList" class="selflink">#</a></p><p class="src"><a href="#v:readPrec">readPrec</a> :: <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Text-ParserCombinators-ReadPrec.html#t:ReadPrec">ReadPrec</a> <a href="Text-Regex-PCRE-Light-Base.html#t:PCREExecOption">PCREExecOption</a> <a href="#v:readPrec" class="selflink">#</a></p><p class="src"><a href="#v:readListPrec">readListPrec</a> :: <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Text-ParserCombinators-ReadPrec.html#t:ReadPrec">ReadPrec</a> [<a href="Text-Regex-PCRE-Light-Base.html#t:PCREExecOption">PCREExecOption</a>] <a href="#v:readListPrec" class="selflink">#</a></p></div></div></td></tr><tr><td class="src clearfix"><span class="inst-left"><span id="control.i:id:PCREExecOption:Show:4" class="instance expander" onclick="toggleSection('i:id:PCREExecOption:Show:4')"></span> <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Text-Show.html#t:Show">Show</a> <a href="Text-Regex-PCRE-Light-Base.html#t:PCREExecOption">PCREExecOption</a></span> <a href="src/Text-Regex-PCRE-Light-Base.html#line-432" class="link">Source</a> <a href="#t:PCREExecOption" class="selflink">#</a></td><td class="doc empty">&nbsp;</td></tr><tr><td colspan="2"><div id="section.i:id:PCREExecOption:Show:4" class="inst-details hide"><div class="subs methods"><p class="caption">Methods</p><p class="src"><a href="#v:showsPrec">showsPrec</a> :: <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Int.html#t:Int">Int</a> -&gt; <a href="Text-Regex-PCRE-Light-Base.html#t:PCREExecOption">PCREExecOption</a> -&gt; <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Text-Show.html#t:ShowS">ShowS</a> <a href="#v:showsPrec" class="selflink">#</a></p><p class="src"><a href="#v:show">show</a> :: <a href="Text-Regex-PCRE-Light-Base.html#t:PCREExecOption">PCREExecOption</a> -&gt; <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-String.html#t:String">String</a> <a href="#v:show" class="selflink">#</a></p><p class="src"><a href="#v:showList">showList</a> :: [<a href="Text-Regex-PCRE-Light-Base.html#t:PCREExecOption">PCREExecOption</a>] -&gt; <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Text-Show.html#t:ShowS">ShowS</a> <a href="#v:showList" class="selflink">#</a></p></div></div></td></tr></table></div></div></div><div class="top"><p class="src"><a id="v:combineExecOptions" class="def">combineExecOptions</a> :: [<a href="Text-Regex-PCRE-Light-Base.html#t:PCREExecOption">PCREExecOption</a>] -&gt; <a href="Text-Regex-PCRE-Light-Base.html#t:PCREExecOption">PCREExecOption</a> <a href="src/Text-Regex-PCRE-Light-Base.html#combineExecOptions" class="link">Source</a> <a href="#v:combineExecOptions" class="selflink">#</a></p><div class="doc"><p>Combine a list of exec options into a single option, using bitwise (.|.)</p></div></div><div class="top"><p class="src"><a id="v:exec_anchored" class="def">exec_anchored</a> :: <a href="Text-Regex-PCRE-Light-Base.html#t:PCREExecOption">PCREExecOption</a> <a href="src/Text-Regex-PCRE-Light-Base.html#exec_anchored" class="link">Source</a> <a href="#v:exec_anchored" class="selflink">#</a></p><div class="doc"><p><code><a href="Text-Regex-PCRE-Light-Base.html#v:anchored">anchored</a></code>.</p><p>The <code><a href="Text-Regex-PCRE-Light-Base.html#v:anchored">anchored</a></code> option limits <code>exec</code> to matching at
 the first matching position. If a pattern was compiled
 with <code><a href="Text-Regex-PCRE-Light-Base.html#v:anchored">anchored</a></code>, or turned out to be anchored by virtue
 of its contents, it cannot be made unachored at matching
 time.</p></div></div><div class="top"><p class="src"><a id="v:exec_newline_cr" class="def">exec_newline_cr</a> :: <a href="Text-Regex-PCRE-Light-Base.html#t:PCREExecOption">PCREExecOption</a> <a href="src/Text-Regex-PCRE-Light-Base.html#exec_newline_cr" class="link">Source</a> <a href="#v:exec_newline_cr" class="selflink">#</a></p><div class="doc"><p><code><a href="Text-Regex-PCRE-Light-Base.html#v:newline_cr">newline_cr</a></code>, <code><a href="Text-Regex-PCRE-Light-Base.html#v:newline_lf">newline_lf</a></code>,
 <code><a href="Text-Regex-PCRE-Light-Base.html#v:newline_crlf">newline_crlf</a></code>, <code>newline_anycrlf</code>, <code>newline_any</code></p><p>These options override the newline definition that was
 chosen or defaulted when the pattern was compiled. For
 details, see the description of <code>compile</code> above. Dur-
 ing matching, the newline choice affects the behaviour of
 the dot, circumflex, and dollar metacharacters. It may
 also alter the way the match position is advanced after a
 match failure for an unanchored pattern.</p><p>When <code><a href="Text-Regex-PCRE-Light-Base.html#v:newline_crlf">newline_crlf</a></code>, <code>newline_anycrlf</code>, or <code>newline_any</code>
 is set, and a match attempt for an unanchored
 pattern fails when the current position is at a CRLF
 sequence, and the pattern contains no explicit matches for
 CR or LF characters, the match position is advanced by two
 characters instead of one, in other words, to after the
 CRLF.</p><p>The above rule is a compromise that makes the most common
 cases work as expected. For example, if the pattern is .+A
 (and the <code><a href="Text-Regex-PCRE-Light-Base.html#v:dotall">dotall</a></code> option is not set), it does not match
 the string <em>\r\nA</em> because, after failing at the start, it
 skips both the CR and the LF before retrying. However, the
 pattern <em>[\r\n]A</em> does match that string, because it contains
 an explicit CR or LF reference, and so advances only
 by one character after the first failure.</p><p>An explicit match for CR of LF is either a literal appear-
 ance of one of those characters, or one of the \r or \n
 escape sequences. Implicit matches such as [^X] do not
 count, nor does \s (which includes CR and LF in the char-
 acters that it matches).</p><p>Notwithstanding the above, anomalous effects may still
 occur when CRLF is a valid newline sequence and explicit
 \r or \n escapes appear in the pattern.</p><p>exec_newline_any           :: PCREExecOption
 exec_newline_any           = PCREExecOption exec_newline_any_cint</p><p><code>exec_newline_anycrlf</code>, see <code>exec_newline_any</code>
 exec_newline_anycrlf       :: PCREExecOption
 exec_newline_anycrlf       = PCREExecOption exec_newline_anycrlf_cint</p><p><code><a href="Text-Regex-PCRE-Light-Base.html#v:exec_newline_cr">exec_newline_cr</a></code>, see <code>exec_newline_any</code></p></div></div><div class="top"><p class="src"><a id="v:exec_newline_crlf" class="def">exec_newline_crlf</a> :: <a href="Text-Regex-PCRE-Light-Base.html#t:PCREExecOption">PCREExecOption</a> <a href="src/Text-Regex-PCRE-Light-Base.html#exec_newline_crlf" class="link">Source</a> <a href="#v:exec_newline_crlf" class="selflink">#</a></p><div class="doc"><p><code><a href="Text-Regex-PCRE-Light-Base.html#v:exec_newline_crlf">exec_newline_crlf</a></code>, see <code>exec_newline_any</code></p></div></div><div class="top"><p class="src"><a id="v:exec_newline_lf" class="def">exec_newline_lf</a> :: <a href="Text-Regex-PCRE-Light-Base.html#t:PCREExecOption">PCREExecOption</a> <a href="src/Text-Regex-PCRE-Light-Base.html#exec_newline_lf" class="link">Source</a> <a href="#v:exec_newline_lf" class="selflink">#</a></p><div class="doc"><p><code><a href="Text-Regex-PCRE-Light-Base.html#v:exec_newline_lf">exec_newline_lf</a></code>, see <code>exec_newline_any</code></p></div></div><div class="top"><p class="src"><a id="v:exec_notbol" class="def">exec_notbol</a> :: <a href="Text-Regex-PCRE-Light-Base.html#t:PCREExecOption">PCREExecOption</a> <a href="src/Text-Regex-PCRE-Light-Base.html#exec_notbol" class="link">Source</a> <a href="#v:exec_notbol" class="selflink">#</a></p><div class="doc"><p><code>PCRE_NOTBOL</code></p><p>This option specifies that first character of the subject
 string is not the beginning of a line, so the circumflex
 metacharacter should not match before it. Setting this
 without <code><a href="Text-Regex-PCRE-Light-Base.html#v:multiline">multiline</a></code> (at compile time) causes circumflex
 never to match. This option affects only the behaviour of
 the circumflex metacharacter. It does not affect \A.</p></div></div><div class="top"><p class="src"><a id="v:exec_noteol" class="def">exec_noteol</a> :: <a href="Text-Regex-PCRE-Light-Base.html#t:PCREExecOption">PCREExecOption</a> <a href="src/Text-Regex-PCRE-Light-Base.html#exec_noteol" class="link">Source</a> <a href="#v:exec_noteol" class="selflink">#</a></p><div class="doc"><p><code>noteol</code></p><p>This option specifies that the end of the subject string
 is not the end of a line, so the dollar metacharacter
 should not match it nor (except in multiline mode) a newline
 immediately before it. Setting this without <code><a href="Text-Regex-PCRE-Light-Base.html#v:multiline">multiline</a></code> 
 (at compile time) causes dollar never to match.
 This option affects only the behaviour of the dollar
 metacharacter. It does not affect \Z or \z.</p></div></div><div class="top"><p class="src"><a id="v:exec_notempty" class="def">exec_notempty</a> :: <a href="Text-Regex-PCRE-Light-Base.html#t:PCREExecOption">PCREExecOption</a> <a href="src/Text-Regex-PCRE-Light-Base.html#exec_notempty" class="link">Source</a> <a href="#v:exec_notempty" class="selflink">#</a></p><div class="doc"><p>PCRE_NOTEMPTY</p><p>An empty string is not considered to be a valid match if
 this option is set. If there are alternatives in the pattern,
 they are tried. If all the alternatives match the
 empty string, the entire match fails. For example, if the
 pattern</p><pre>a?b?</pre><p>is applied to a string not beginning with <em>a</em> or <em>b</em>, it
 matches the empty string at the start of the subject. With
 <code>notempty</code> set, this match is not valid, so 'PCRE
 searches further into the string for occurrences of <em>a</em> or
 <em>b</em>.</p><p>Perl has no direct equivalent of <code>notempty</code>, but it
 does make a special case of a pattern match of the empty
 string within its split() function, and when using the /g
 modifier. It is possible to emulate Perl's behaviour after
 matching a null string by first trying the match again at
 the same offset with PCRE_NOTEMPTY and PCRE_ANCHORED, and
 then if that fails by advancing the starting offset (see
 below) and trying an ordinary match again. There is some
 code that demonstrates how to do this in the pcredemo.c
 sample program.</p></div></div><div class="top"><p class="src"><a id="v:exec_no_utf8_check" class="def">exec_no_utf8_check</a> :: <a href="Text-Regex-PCRE-Light-Base.html#t:PCREExecOption">PCREExecOption</a> <a href="src/Text-Regex-PCRE-Light-Base.html#exec_no_utf8_check" class="link">Source</a> <a href="#v:exec_no_utf8_check" class="selflink">#</a></p><div class="doc"><p><code><a href="Text-Regex-PCRE-Light-Base.html#v:no_utf8_check">no_utf8_check</a></code></p><p>When <code><a href="Text-Regex-PCRE-Light-Base.html#v:utf8">utf8</a></code> is set at compile time, the validity of the
 subject as a UTF-8 string is automatically checked when
 exec() is subsequently called. The value of
 startoffset is also checked to ensure that it points to
 the start of a UTF-8 character. There is a discussion
 about the validity of UTF-8 strings in the section on
 UTF-8 support in the main pcre page. If an invalid UTF-8
 sequence of bytes is found, exec() returns the error
 <code><a href="Text-Regex-PCRE-Light-Base.html#v:error_badutf8">error_badutf8</a></code>. If startoffset contains an invalid
 value, <code><a href="Text-Regex-PCRE-Light-Base.html#v:error_badutf8_offset">error_badutf8_offset</a></code> is returned.</p><p>If you already know that your subject is valid, and you
 want to skip these checks for performance reasons, you can
 set the <code><a href="Text-Regex-PCRE-Light-Base.html#v:no_utf8_check">no_utf8_check</a></code> option when calling
 <code>exec</code>. You might want to do this for the second and
 subsequent calls to exec() if you are making repeated
 calls to find all the matches in a single subject string.
 However, you should be sure that the value of startoffset
 points to the start of a UTF-8 character. When
 <code><a href="Text-Regex-PCRE-Light-Base.html#v:no_utf8_check">no_utf8_check</a></code> is set, the effect of passing an
 invalid UTF-8 string as a subject, or a value of startoff-
 set that does not point to the start of a UTF-8 character,
 is undefined. Your program may crash.</p></div></div><div class="top"><p class="src"><a id="v:exec_partial" class="def">exec_partial</a> :: <a href="Text-Regex-PCRE-Light-Base.html#t:PCREExecOption">PCREExecOption</a> <a href="src/Text-Regex-PCRE-Light-Base.html#exec_partial" class="link">Source</a> <a href="#v:exec_partial" class="selflink">#</a></p><div class="doc"><p><code>partial</code></p><p>This option turns on the partial matching feature. If the
 subject string fails to match the pattern, but at some
 point during the matching process the end of the subject
 was reached (that is, the subject partially matches the
 pattern and the failure to match occurred only because
 there were not enough subject characters), <code>exec</code>
 returns <code><a href="Text-Regex-PCRE-Light-Base.html#v:error_partial">error_partial</a></code> instead of <code><a href="Text-Regex-PCRE-Light-Base.html#v:error_nomatch">error_nomatch</a></code>.
 When <code>partial</code> is used, there are restrictions on what
 may appear in the pattern. These are discussed in the
 pcrepartial documentation.</p></div></div><h1 id="g:5">PCRE Errors</h1><div class="top"><p class="src"><span class="keyword">type</span> <a id="t:PCREError" class="def">PCREError</a> = <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Foreign-C-Types.html#t:CInt">CInt</a> <a href="src/Text-Regex-PCRE-Light-Base.html#PCREError" class="link">Source</a> <a href="#t:PCREError" class="selflink">#</a></p><div class="doc"><p>A type for PCRE Errors: exec-time error codes.</p></div></div><div class="top"><p class="src"><a id="v:error_nomatch" class="def">error_nomatch</a> :: <a href="Text-Regex-PCRE-Light-Base.html#t:PCREError">PCREError</a> <a href="src/Text-Regex-PCRE-Light-Base.html#error_nomatch" class="link">Source</a> <a href="#v:error_nomatch" class="selflink">#</a></p></div><div class="top"><p class="src"><a id="v:error_null" class="def">error_null</a> :: <a href="Text-Regex-PCRE-Light-Base.html#t:PCREError">PCREError</a> <a href="src/Text-Regex-PCRE-Light-Base.html#error_null" class="link">Source</a> <a href="#v:error_null" class="selflink">#</a></p></div><div class="top"><p class="src"><a id="v:error_badoption" class="def">error_badoption</a> :: <a href="Text-Regex-PCRE-Light-Base.html#t:PCREError">PCREError</a> <a href="src/Text-Regex-PCRE-Light-Base.html#error_badoption" class="link">Source</a> <a href="#v:error_badoption" class="selflink">#</a></p></div><div class="top"><p class="src"><a id="v:error_badmagic" class="def">error_badmagic</a> :: <a href="Text-Regex-PCRE-Light-Base.html#t:PCREError">PCREError</a> <a href="src/Text-Regex-PCRE-Light-Base.html#error_badmagic" class="link">Source</a> <a href="#v:error_badmagic" class="selflink">#</a></p></div><div class="top"><p class="src"><a id="v:error_unknown_node" class="def">error_unknown_node</a> :: <a href="Text-Regex-PCRE-Light-Base.html#t:PCREError">PCREError</a> <a href="src/Text-Regex-PCRE-Light-Base.html#error_unknown_node" class="link">Source</a> <a href="#v:error_unknown_node" class="selflink">#</a></p></div><div class="top"><p class="src"><a id="v:error_nomemory" class="def">error_nomemory</a> :: <a href="Text-Regex-PCRE-Light-Base.html#t:PCREError">PCREError</a> <a href="src/Text-Regex-PCRE-Light-Base.html#error_nomemory" class="link">Source</a> <a href="#v:error_nomemory" class="selflink">#</a></p></div><div class="top"><p class="src"><a id="v:error_nosubstring" class="def">error_nosubstring</a> :: <a href="Text-Regex-PCRE-Light-Base.html#t:PCREError">PCREError</a> <a href="src/Text-Regex-PCRE-Light-Base.html#error_nosubstring" class="link">Source</a> <a href="#v:error_nosubstring" class="selflink">#</a></p></div><div class="top"><p class="src"><a id="v:error_matchlimit" class="def">error_matchlimit</a> :: <a href="Text-Regex-PCRE-Light-Base.html#t:PCREError">PCREError</a> <a href="src/Text-Regex-PCRE-Light-Base.html#error_matchlimit" class="link">Source</a> <a href="#v:error_matchlimit" class="selflink">#</a></p></div><div class="top"><p class="src"><a id="v:error_callout" class="def">error_callout</a> :: <a href="Text-Regex-PCRE-Light-Base.html#t:PCREError">PCREError</a> <a href="src/Text-Regex-PCRE-Light-Base.html#error_callout" class="link">Source</a> <a href="#v:error_callout" class="selflink">#</a></p></div><div class="top"><p class="src"><a id="v:error_badutf8" class="def">error_badutf8</a> :: <a href="Text-Regex-PCRE-Light-Base.html#t:PCREError">PCREError</a> <a href="src/Text-Regex-PCRE-Light-Base.html#error_badutf8" class="link">Source</a> <a href="#v:error_badutf8" class="selflink">#</a></p></div><div class="top"><p class="src"><a id="v:error_badutf8_offset" class="def">error_badutf8_offset</a> :: <a href="Text-Regex-PCRE-Light-Base.html#t:PCREError">PCREError</a> <a href="src/Text-Regex-PCRE-Light-Base.html#error_badutf8_offset" class="link">Source</a> <a href="#v:error_badutf8_offset" class="selflink">#</a></p></div><div class="top"><p class="src"><a id="v:error_partial" class="def">error_partial</a> :: <a href="Text-Regex-PCRE-Light-Base.html#t:PCREError">PCREError</a> <a href="src/Text-Regex-PCRE-Light-Base.html#error_partial" class="link">Source</a> <a href="#v:error_partial" class="selflink">#</a></p></div><div class="top"><p class="src"><a id="v:error_badpartial" class="def">error_badpartial</a> :: <a href="Text-Regex-PCRE-Light-Base.html#t:PCREError">PCREError</a> <a href="src/Text-Regex-PCRE-Light-Base.html#error_badpartial" class="link">Source</a> <a href="#v:error_badpartial" class="selflink">#</a></p></div><div class="top"><p class="src"><a id="v:error_internal" class="def">error_internal</a> :: <a href="Text-Regex-PCRE-Light-Base.html#t:PCREError">PCREError</a> <a href="src/Text-Regex-PCRE-Light-Base.html#error_internal" class="link">Source</a> <a href="#v:error_internal" class="selflink">#</a></p></div><div class="top"><p class="src"><a id="v:error_badcount" class="def">error_badcount</a> :: <a href="Text-Regex-PCRE-Light-Base.html#t:PCREError">PCREError</a> <a href="src/Text-Regex-PCRE-Light-Base.html#error_badcount" class="link">Source</a> <a href="#v:error_badcount" class="selflink">#</a></p></div><div class="top"><p class="src"><a id="v:error_dfa_uitem" class="def">error_dfa_uitem</a> :: <a href="Text-Regex-PCRE-Light-Base.html#t:PCREError">PCREError</a> <a href="src/Text-Regex-PCRE-Light-Base.html#error_dfa_uitem" class="link">Source</a> <a href="#v:error_dfa_uitem" class="selflink">#</a></p></div><div class="top"><p class="src"><a id="v:error_dfa_ucond" class="def">error_dfa_ucond</a> :: <a href="Text-Regex-PCRE-Light-Base.html#t:PCREError">PCREError</a> <a href="src/Text-Regex-PCRE-Light-Base.html#error_dfa_ucond" class="link">Source</a> <a href="#v:error_dfa_ucond" class="selflink">#</a></p></div><div class="top"><p class="src"><a id="v:error_dfa_umlimit" class="def">error_dfa_umlimit</a> :: <a href="Text-Regex-PCRE-Light-Base.html#t:PCREError">PCREError</a> <a href="src/Text-Regex-PCRE-Light-Base.html#error_dfa_umlimit" class="link">Source</a> <a href="#v:error_dfa_umlimit" class="selflink">#</a></p></div><div class="top"><p class="src"><a id="v:error_dfa_wssize" class="def">error_dfa_wssize</a> :: <a href="Text-Regex-PCRE-Light-Base.html#t:PCREError">PCREError</a> <a href="src/Text-Regex-PCRE-Light-Base.html#error_dfa_wssize" class="link">Source</a> <a href="#v:error_dfa_wssize" class="selflink">#</a></p></div><div class="top"><p class="src"><a id="v:error_dfa_recurse" class="def">error_dfa_recurse</a> :: <a href="Text-Regex-PCRE-Light-Base.html#t:PCREError">PCREError</a> <a href="src/Text-Regex-PCRE-Light-Base.html#error_dfa_recurse" class="link">Source</a> <a href="#v:error_dfa_recurse" class="selflink">#</a></p></div><div class="top"><p class="src"><a id="v:error_recursionlimit" class="def">error_recursionlimit</a> :: <a href="Text-Regex-PCRE-Light-Base.html#t:PCREError">PCREError</a> <a href="src/Text-Regex-PCRE-Light-Base.html#error_recursionlimit" class="link">Source</a> <a href="#v:error_recursionlimit" class="selflink">#</a></p></div><h1 id="g:6">PCRE Info</h1><div class="top"><p class="src"><span class="keyword">type</span> <a id="t:PCREInfo" class="def">PCREInfo</a> = <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Foreign-C-Types.html#t:CInt">CInt</a> <a href="src/Text-Regex-PCRE-Light-Base.html#PCREInfo" class="link">Source</a> <a href="#t:PCREInfo" class="selflink">#</a></p><div class="doc"><p>PCRE Info requests -- provides information about the compiled pattern.</p></div></div><div class="top"><p class="src"><a id="v:info_options" class="def">info_options</a> :: <a href="Text-Regex-PCRE-Light-Base.html#t:PCREInfo">PCREInfo</a> <a href="src/Text-Regex-PCRE-Light-Base.html#info_options" class="link">Source</a> <a href="#v:info_options" class="selflink">#</a></p></div><div class="top"><p class="src"><a id="v:info_size" class="def">info_size</a> :: <a href="Text-Regex-PCRE-Light-Base.html#t:PCREInfo">PCREInfo</a> <a href="src/Text-Regex-PCRE-Light-Base.html#info_size" class="link">Source</a> <a href="#v:info_size" class="selflink">#</a></p></div><div class="top"><p class="src"><a id="v:info_capturecount" class="def">info_capturecount</a> :: <a href="Text-Regex-PCRE-Light-Base.html#t:PCREInfo">PCREInfo</a> <a href="src/Text-Regex-PCRE-Light-Base.html#info_capturecount" class="link">Source</a> <a href="#v:info_capturecount" class="selflink">#</a></p></div><div class="top"><p class="src"><a id="v:info_backrefmax" class="def">info_backrefmax</a> :: <a href="Text-Regex-PCRE-Light-Base.html#t:PCREInfo">PCREInfo</a> <a href="src/Text-Regex-PCRE-Light-Base.html#info_backrefmax" class="link">Source</a> <a href="#v:info_backrefmax" class="selflink">#</a></p></div><div class="top"><p class="src"><a id="v:info_firstbyte" class="def">info_firstbyte</a> :: <a href="Text-Regex-PCRE-Light-Base.html#t:PCREInfo">PCREInfo</a> <a href="src/Text-Regex-PCRE-Light-Base.html#info_firstbyte" class="link">Source</a> <a href="#v:info_firstbyte" class="selflink">#</a></p></div><div class="top"><p class="src"><a id="v:info_firstchar" class="def">info_firstchar</a> :: <a href="Text-Regex-PCRE-Light-Base.html#t:PCREInfo">PCREInfo</a> <a href="src/Text-Regex-PCRE-Light-Base.html#info_firstchar" class="link">Source</a> <a href="#v:info_firstchar" class="selflink">#</a></p></div><div class="top"><p class="src"><a id="v:info_firsttable" class="def">info_firsttable</a> :: <a href="Text-Regex-PCRE-Light-Base.html#t:PCREInfo">PCREInfo</a> <a href="src/Text-Regex-PCRE-Light-Base.html#info_firsttable" class="link">Source</a> <a href="#v:info_firsttable" class="selflink">#</a></p></div><div class="top"><p class="src"><a id="v:info_lastliteral" class="def">info_lastliteral</a> :: <a href="Text-Regex-PCRE-Light-Base.html#t:PCREInfo">PCREInfo</a> <a href="src/Text-Regex-PCRE-Light-Base.html#info_lastliteral" class="link">Source</a> <a href="#v:info_lastliteral" class="selflink">#</a></p></div><div class="top"><p class="src"><a id="v:info_nameentrysize" class="def">info_nameentrysize</a> :: <a href="Text-Regex-PCRE-Light-Base.html#t:PCREInfo">PCREInfo</a> <a href="src/Text-Regex-PCRE-Light-Base.html#info_nameentrysize" class="link">Source</a> <a href="#v:info_nameentrysize" class="selflink">#</a></p></div><div class="top"><p class="src"><a id="v:info_namecount" class="def">info_namecount</a> :: <a href="Text-Regex-PCRE-Light-Base.html#t:PCREInfo">PCREInfo</a> <a href="src/Text-Regex-PCRE-Light-Base.html#info_namecount" class="link">Source</a> <a href="#v:info_namecount" class="selflink">#</a></p></div><div class="top"><p class="src"><a id="v:info_nametable" class="def">info_nametable</a> :: <a href="Text-Regex-PCRE-Light-Base.html#t:PCREInfo">PCREInfo</a> <a href="src/Text-Regex-PCRE-Light-Base.html#info_nametable" class="link">Source</a> <a href="#v:info_nametable" class="selflink">#</a></p></div><div class="top"><p class="src"><a id="v:info_studysize" class="def">info_studysize</a> :: <a href="Text-Regex-PCRE-Light-Base.html#t:PCREInfo">PCREInfo</a> <a href="src/Text-Regex-PCRE-Light-Base.html#info_studysize" class="link">Source</a> <a href="#v:info_studysize" class="selflink">#</a></p><div class="doc"><p>Request types for config()</p></div></div><div class="top"><p class="src"><a id="v:info_default_tables" class="def">info_default_tables</a> :: <a href="Text-Regex-PCRE-Light-Base.html#t:PCREInfo">PCREInfo</a> <a href="src/Text-Regex-PCRE-Light-Base.html#info_default_tables" class="link">Source</a> <a href="#v:info_default_tables" class="selflink">#</a></p></div><h1 id="g:7">PCRE Configuration</h1><div class="top"><p class="src"><span class="keyword">type</span> <a id="t:PCREConfig" class="def">PCREConfig</a> = <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Foreign-C-Types.html#t:CInt">CInt</a> <a href="src/Text-Regex-PCRE-Light-Base.html#PCREConfig" class="link">Source</a> <a href="#t:PCREConfig" class="selflink">#</a></p></div><div class="top"><p class="src"><a id="v:config_utf8" class="def">config_utf8</a> :: <a href="Text-Regex-PCRE-Light-Base.html#t:PCREConfig">PCREConfig</a> <a href="src/Text-Regex-PCRE-Light-Base.html#config_utf8" class="link">Source</a> <a href="#v:config_utf8" class="selflink">#</a></p></div><div class="top"><p class="src"><a id="v:config_newline" class="def">config_newline</a> :: <a href="Text-Regex-PCRE-Light-Base.html#t:PCREConfig">PCREConfig</a> <a href="src/Text-Regex-PCRE-Light-Base.html#config_newline" class="link">Source</a> <a href="#v:config_newline" class="selflink">#</a></p></div><div class="top"><p class="src"><a id="v:config_link_size" class="def">config_link_size</a> :: <a href="Text-Regex-PCRE-Light-Base.html#t:PCREConfig">PCREConfig</a> <a href="src/Text-Regex-PCRE-Light-Base.html#config_link_size" class="link">Source</a> <a href="#v:config_link_size" class="selflink">#</a></p></div><div class="top"><p class="src"><a id="v:config_posix_malloc_threshold" class="def">config_posix_malloc_threshold</a> :: <a href="Text-Regex-PCRE-Light-Base.html#t:PCREConfig">PCREConfig</a> <a href="src/Text-Regex-PCRE-Light-Base.html#config_posix_malloc_threshold" class="link">Source</a> <a href="#v:config_posix_malloc_threshold" class="selflink">#</a></p></div><div class="top"><p class="src"><a id="v:config_match_limit" class="def">config_match_limit</a> :: <a href="Text-Regex-PCRE-Light-Base.html#t:PCREConfig">PCREConfig</a> <a href="src/Text-Regex-PCRE-Light-Base.html#config_match_limit" class="link">Source</a> <a href="#v:config_match_limit" class="selflink">#</a></p></div><div class="top"><p class="src"><a id="v:config_stackrecurse" class="def">config_stackrecurse</a> :: <a href="Text-Regex-PCRE-Light-Base.html#t:PCREConfig">PCREConfig</a> <a href="src/Text-Regex-PCRE-Light-Base.html#config_stackrecurse" class="link">Source</a> <a href="#v:config_stackrecurse" class="selflink">#</a></p></div><div class="top"><p class="src"><a id="v:config_unicode_properties" class="def">config_unicode_properties</a> :: <a href="Text-Regex-PCRE-Light-Base.html#t:PCREConfig">PCREConfig</a> <a href="src/Text-Regex-PCRE-Light-Base.html#config_unicode_properties" class="link">Source</a> <a href="#v:config_unicode_properties" class="selflink">#</a></p></div><div class="top"><p class="src"><a id="v:config_match_limit_recursion" class="def">config_match_limit_recursion</a> :: <a href="Text-Regex-PCRE-Light-Base.html#t:PCREConfig">PCREConfig</a> <a href="src/Text-Regex-PCRE-Light-Base.html#config_match_limit_recursion" class="link">Source</a> <a href="#v:config_match_limit_recursion" class="selflink">#</a></p></div><h1 id="g:8">PCRE Extra</h1><div class="top"><p class="src"><span class="keyword">type</span> <a id="t:PCREExtraFlags" class="def">PCREExtraFlags</a> = <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Foreign-C-Types.html#t:CInt">CInt</a> <a href="src/Text-Regex-PCRE-Light-Base.html#PCREExtraFlags" class="link">Source</a> <a href="#t:PCREExtraFlags" class="selflink">#</a></p><div class="doc"><p>PCREExtraFlags. bit flags for extra structure.</p></div></div><div class="top"><p class="src"><a id="v:extra_study_data" class="def">extra_study_data</a> :: <a href="Text-Regex-PCRE-Light-Base.html#t:PCREExtraFlags">PCREExtraFlags</a> <a href="src/Text-Regex-PCRE-Light-Base.html#extra_study_data" class="link">Source</a> <a href="#v:extra_study_data" class="selflink">#</a></p></div><div class="top"><p class="src"><a id="v:extra_match_limit" class="def">extra_match_limit</a> :: <a href="Text-Regex-PCRE-Light-Base.html#t:PCREExtraFlags">PCREExtraFlags</a> <a href="src/Text-Regex-PCRE-Light-Base.html#extra_match_limit" class="link">Source</a> <a href="#v:extra_match_limit" class="selflink">#</a></p></div><div class="top"><p class="src"><a id="v:extra_callout_data" class="def">extra_callout_data</a> :: <a href="Text-Regex-PCRE-Light-Base.html#t:PCREExtraFlags">PCREExtraFlags</a> <a href="src/Text-Regex-PCRE-Light-Base.html#extra_callout_data" class="link">Source</a> <a href="#v:extra_callout_data" class="selflink">#</a></p></div><div class="top"><p class="src"><a id="v:extra_tables" class="def">extra_tables</a> :: <a href="Text-Regex-PCRE-Light-Base.html#t:PCREExtraFlags">PCREExtraFlags</a> <a href="src/Text-Regex-PCRE-Light-Base.html#extra_tables" class="link">Source</a> <a href="#v:extra_tables" class="selflink">#</a></p></div><div class="top"><p class="src"><a id="v:extra_match_limit_recursion" class="def">extra_match_limit_recursion</a> :: <a href="Text-Regex-PCRE-Light-Base.html#t:PCREExtraFlags">PCREExtraFlags</a> <a href="src/Text-Regex-PCRE-Light-Base.html#extra_match_limit_recursion" class="link">Source</a> <a href="#v:extra_match_limit_recursion" class="selflink">#</a></p></div><div class="top"><p class="src"><a id="v:size_of_cint" class="def">size_of_cint</a> :: <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Int.html#t:Int">Int</a> <a href="src/Text-Regex-PCRE-Light-Base.html#size_of_cint" class="link">Source</a> <a href="#v:size_of_cint" class="selflink">#</a></p><div class="doc"><p>Get sizeof CInt from hsc2hs</p></div></div></div></div><div id="footer"><p>Produced by <a href="http://www.haskell.org/haddock/">Haddock</a> version 2.17.2</p></div></body></html>

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