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X11R7.4 - man page for pcre_study (x11r4 section 3)

PCRE_STUDY(3)			     Library Functions Manual			    PCRE_STUDY(3)

NAME
       PCRE - Perl-compatible regular expressions

SYNOPSIS

       #include <pcre.h>

       pcre_extra *pcre_study(const pcre *code, int options,
	    const char **errptr);

DESCRIPTION

       This  function  studies	a  compiled  pattern,  to  see	if  additional information can be
       extracted that might speed up matching. Its arguments are:

	 code	    A compiled regular expression
	 options    Options for pcre_study()
	 errptr     Where to put an error message

       If the function succeeds, it returns a value that can be passed	to  pcre_exec()  via  its
       extra argument.

       If  the	function  returns  NULL,  either it could not find any additional information, or
       there was an error. You can tell the difference by looking at the error value. It is  NULL
       in first case.

       There  are currently no options defined; the value of the second argument should always be
       zero.

       There is a complete description of the PCRE native API in the pcreapi page and a  descrip-
       tion of the POSIX API in the pcreposix page.

										    PCRE_STUDY(3)


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