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-.TH PCRE_EXEC 3 "12 May 2013" "PCRE 8.33"
-.SH NAME
-PCRE - Perl-compatible regular expressions
-.SH SYNOPSIS
-.rs
-.sp
-.B #include <pcre.h>
-.PP
-.nf
-.B int pcre_exec(const pcre *\fIcode\fP, "const pcre_extra *\fIextra\fP,"
-.B "     const char *\fIsubject\fP, int \fIlength\fP, int \fIstartoffset\fP,"
-.B "     int \fIoptions\fP, int *\fIovector\fP, int \fIovecsize\fP);"
-.sp
-.B int pcre16_exec(const pcre16 *\fIcode\fP, "const pcre16_extra *\fIextra\fP,"
-.B "     PCRE_SPTR16 \fIsubject\fP, int \fIlength\fP, int \fIstartoffset\fP,"
-.B "     int \fIoptions\fP, int *\fIovector\fP, int \fIovecsize\fP);"
-.sp
-.B int pcre32_exec(const pcre32 *\fIcode\fP, "const pcre32_extra *\fIextra\fP,"
-.B "     PCRE_SPTR32 \fIsubject\fP, int \fIlength\fP, int \fIstartoffset\fP,"
-.B "     int \fIoptions\fP, int *\fIovector\fP, int \fIovecsize\fP);"
-.fi
-.
-.SH DESCRIPTION
-.rs
-.sp
-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. Its arguments are:
-.sp
-  \fIcode\fP         Points to the compiled pattern
-  \fIextra\fP        Points to an associated \fBpcre[16|32]_extra\fP structure,
-                 or is NULL
-  \fIsubject\fP      Points to the subject string
-  \fIlength\fP       Length of the subject string
-  \fIstartoffset\fP  Offset in the subject at which to start matching
-  \fIoptions\fP      Option bits
-  \fIovector\fP      Points to a vector of ints for result offsets
-  \fIovecsize\fP     Number of elements in the vector (a multiple of 3)
-.sp
-The units for \fIlength\fP and \fIstartoffset\fP are bytes for
-\fBpcre_exec()\fP, 16-bit data items for \fBpcre16_exec()\fP, and 32-bit items
-for \fBpcre32_exec()\fP. The options are:
-.sp
-  PCRE_ANCHORED          Match only at the first position
-  PCRE_BSR_ANYCRLF       \eR matches only CR, LF, or CRLF
-  PCRE_BSR_UNICODE       \eR matches all Unicode line endings
-  PCRE_NEWLINE_ANY       Recognize any Unicode newline sequence
-  PCRE_NEWLINE_ANYCRLF   Recognize CR, LF, & CRLF as newline sequences
-  PCRE_NEWLINE_CR        Recognize CR as the only newline sequence
-  PCRE_NEWLINE_CRLF      Recognize CRLF as the only newline sequence
-  PCRE_NEWLINE_LF        Recognize LF as the only newline sequence
-  PCRE_NOTBOL            Subject string is not the beginning of a line
-  PCRE_NOTEOL            Subject string is not the end of a line
-  PCRE_NOTEMPTY          An empty string is not a valid match
-  PCRE_NOTEMPTY_ATSTART  An empty string at the start of the subject
-                           is not a valid match
-  PCRE_NO_START_OPTIMIZE Do not do "start-match" optimizations
-  PCRE_NO_UTF16_CHECK    Do not check the subject for UTF-16
-                           validity (only relevant if PCRE_UTF16
-                           was set at compile time)
-  PCRE_NO_UTF32_CHECK    Do not check the subject for UTF-32
-                           validity (only relevant if PCRE_UTF32
-                           was set at compile time)
-  PCRE_NO_UTF8_CHECK     Do not check the subject for UTF-8
-                           validity (only relevant if PCRE_UTF8
-                           was set at compile time)
-  PCRE_PARTIAL           ) Return PCRE_ERROR_PARTIAL for a partial
-  PCRE_PARTIAL_SOFT      )   match if no full matches are found
-  PCRE_PARTIAL_HARD      Return PCRE_ERROR_PARTIAL for a partial match
-                           if that is found before a full match
-.sp
-For details of partial matching, see the
-.\" HREF
-\fBpcrepartial\fP
-.\"
-page. A \fBpcre_extra\fP structure contains the following fields:
-.sp
-  \fIflags\fP            Bits indicating which fields are set
-  \fIstudy_data\fP       Opaque data from \fBpcre[16|32]_study()\fP
-  \fImatch_limit\fP      Limit on internal resource use
-  \fImatch_limit_recursion\fP  Limit on internal recursion depth
-  \fIcallout_data\fP     Opaque data passed back to callouts
-  \fItables\fP           Points to character tables or is NULL
-  \fImark\fP             For passing back a *MARK pointer
-  \fIexecutable_jit\fP   Opaque data from JIT compilation
-.sp
-The flag bits are PCRE_EXTRA_STUDY_DATA, PCRE_EXTRA_MATCH_LIMIT,
-PCRE_EXTRA_MATCH_LIMIT_RECURSION, PCRE_EXTRA_CALLOUT_DATA,
-PCRE_EXTRA_TABLES, PCRE_EXTRA_MARK and PCRE_EXTRA_EXECUTABLE_JIT.
-.P
-There is a complete description of the PCRE native API in the
-.\" HREF
-\fBpcreapi\fP
-.\"
-page and a description of the POSIX API in the
-.\" HREF
-\fBpcreposix\fP
-.\"
-page.