3 PCRE - Perl-compatible regular expressions
10 .B pcre_extra *pcre_study(const pcre *\fIcode\fP, int \fIoptions\fP,
12 .B const char **\fIerrptr\fP);
14 .B pcre16_extra *pcre16_study(const pcre16 *\fIcode\fP, int \fIoptions\fP,
16 .B const char **\fIerrptr\fP);
21 This function studies a compiled pattern, to see if additional information can
22 be extracted that might speed up matching. Its arguments are:
24 \fIcode\fP A compiled regular expression
25 \fIoptions\fP Options for \fBpcre[16]_study()\fP
26 \fIerrptr\fP Where to put an error message
28 If the function succeeds, it returns a value that can be passed to
29 \fBpcre[16]_exec()\fP or \fBpcre[16]_dfa_exec()\fP via their \fIextra\fP
32 If the function returns NULL, either it could not find any additional
33 information, or there was an error. You can tell the difference by looking at
34 the error value. It is NULL in first case.
36 The only option is PCRE_STUDY_JIT_COMPILE. It requests just-in-time compilation
37 if possible. If PCRE has been compiled without JIT support, this option is
42 page for further details.
44 There is a complete description of the PCRE native API in the
48 page and a description of the POSIX API in the