Diff for /embedaddon/pcre/doc/pcretest.txt between versions 1.1 and 1.1.1.3

version 1.1, 2012/02/21 23:05:52 version 1.1.1.3, 2012/10/09 09:19:17
Line 14  SYNOPSIS Line 14  SYNOPSIS
        expressions.  This document describes the features of the test program;         expressions.  This document describes the features of the test program;
        for details of the regular expressions themselves, see the  pcrepattern         for details of the regular expressions themselves, see the  pcrepattern
        documentation. For details of the PCRE library function calls and their         documentation. For details of the PCRE library function calls and their
       options, see the pcreapi documentation. The input  for  pcretest  is  a       options, see the  pcreapi  and  pcre16  documentation.  The  input  for
       sequence  of  regular expression patterns and strings to be matched, as       pcretest is a sequence of regular expression patterns and strings to be
       described below. The output shows the result of each match. Options  on       matched, as described below. The output shows the result of each match.
       the command line and the patterns control PCRE options and exactly what       Options  on  the command line and the patterns control PCRE options and
       is output.       exactly what is output.
   
   
   PCRE's 8-BIT and 16-BIT LIBRARIES
   
          From release 8.30, two separate PCRE libraries can be built. The origi-
          nal  one  supports  8-bit  character  strings, whereas the newer 16-bit
          library  supports  character  strings  encoded  in  16-bit  units.  The
          pcretest  program  can  be  used to test both libraries. However, it is
          itself still an 8-bit program, reading 8-bit input  and  writing  8-bit
          output.  When testing the 16-bit library, the patterns and data strings
          are converted to 16-bit format before being passed to the PCRE  library
          functions. Results are converted to 8-bit for output.
   
          References  to  functions  and structures of the form pcre[16]_xx below
          mean "pcre_xx when using the 8-bit library or pcre16_xx when using  the
          16-bit library".
   
   
 COMMAND LINE OPTIONS  COMMAND LINE OPTIONS
   
       -b        Behave as if each pattern has the /B (show byte  code)  modi-       -16       If  both  the 8-bit and the 16-bit libraries have been built,
                  this option causes the 16-bit library to be used. If only the
                  16-bit library has been built, this is the default (so has no
                  effect). If only the  8-bit  library  has  been  built,  this
                  option causes an error.
 
        -b        Behave  as  if each pattern has the /B (show byte code) modi-
                  fier; the internal form is output after compilation.                   fier; the internal form is output after compilation.
   
        -C        Output the version number of the PCRE library, and all avail-         -C        Output the version number of the PCRE library, and all avail-
                 able  information  about  the  optional  features  that   are                 able   information  about  the  optional  features  that  are
                 included, and then exit.                 included, and then exit. All other options are ignored.
   
       -d        Behave  as  if  each pattern has the /D (debug) modifier; the       -C option Output information about a specific build-time  option,  then
                 internal form and information about the compiled  pattern  is                 exit.  This functionality is intended for use in scripts such
                  as RunTest. The following options output the value indicated:
 
                    linksize   the internal link size (2, 3, or 4)
                    newline    the default newline setting:
                                 CR, LF, CRLF, ANYCRLF, or ANY
 
                  The following options output 1 for true or zero for false:
 
                    jit        just-in-time support is available
                    pcre16     the 16-bit library was built
                    pcre8      the 8-bit library was built
                    ucp        Unicode property support is available
                    utf        UTF-8 and/or UTF-16 support is available
 
        -d        Behave as if each pattern has the /D  (debug)  modifier;  the
                  internal  form  and information about the compiled pattern is
                  output after compilation; -d is equivalent to -b -i.                   output after compilation; -d is equivalent to -b -i.
   
       -dfa      Behave  as if each data line contains the \D escape sequence;       -dfa      Behave as if each data line contains the \D escape  sequence;
                  this    causes    the    alternative    matching    function,                   this    causes    the    alternative    matching    function,
                 pcre_dfa_exec(),   to   be   used  instead  of  the  standard                 pcre[16]_dfa_exec(), to  be  used  instead  of  the  standard
                 pcre_exec() function (more detail is given below).                 pcre[16]_exec() function (more detail is given below).
   
        -help     Output a brief summary these options and then exit.         -help     Output a brief summary these options and then exit.
   
       -i        Behave as if each pattern has the  /I  modifier;  information       -i        Behave  as  if  each pattern has the /I modifier; information
                  about the compiled pattern is given after compilation.                   about the compiled pattern is given after compilation.
   
       -M        Behave  as if each data line contains the \M escape sequence;       -M        Behave as if each data line contains the \M escape  sequence;
                 this causes PCRE to  discover  the  minimum  MATCH_LIMIT  and                 this  causes  PCRE  to  discover  the minimum MATCH_LIMIT and
                 MATCH_LIMIT_RECURSION settings by calling pcre_exec() repeat-                 MATCH_LIMIT_RECURSION  settings  by  calling  pcre[16]_exec()
                 edly with different limits.                 repeatedly with different limits.
   
       -m        Output the size of each compiled pattern after  it  has  been       -m        Output  the  size  of each compiled pattern after it has been
                 compiled.  This  is  equivalent  to adding /M to each regular                 compiled. This is equivalent to adding  /M  to  each  regular
                 expression.                 expression. The size is given in bytes for both libraries.
   
       -o osize  Set the number of elements in the output vector that is  used       -o osize  Set  the number of elements in the output vector that is used
                 when  calling pcre_exec() or pcre_dfa_exec() to be osize. The                 when calling pcre[16]_exec()  or  pcre[16]_dfa_exec()  to  be
                 default value is 45, which is enough for 14 capturing  subex-                 osize.  The  default value is 45, which is enough for 14 cap-
                 pressions   for  pcre_exec()  or  22  different  matches  for                 turing subexpressions for  pcre[16]_exec()  or  22  different
                 pcre_dfa_exec(). The vector size can be changed for  individ-                 matches  for  pcre[16]_dfa_exec().   The  vector  size can be
                 ual  matching  calls  by  including  \O in the data line (see                 changed for individual matching calls by including \O in  the
                 below).                 data line (see below).
   
       -p        Behave as if each pattern has  the  /P  modifier;  the  POSIX       -p        Behave  as  if  each  pattern  has the /P modifier; the POSIX
                 wrapper  API  is used to call PCRE. None of the other options                 wrapper API is used to call PCRE. None of the  other  options
                 has any effect when -p is set.                 has  any  effect when -p is set. This option can be used only
                  with the 8-bit library.
   
        -q        Do not output the version number of pcretest at the start  of         -q        Do not output the version number of pcretest at the start  of
                  execution.                   execution.
Line 72  COMMAND LINE OPTIONS Line 111  COMMAND LINE OPTIONS
                  size megabytes.                   size megabytes.
   
        -s or -s+ Behave as if each pattern  has  the  /S  modifier;  in  other         -s or -s+ Behave as if each pattern  has  the  /S  modifier;  in  other
                 words,  force each pattern to be studied. If -s+ is used, the                 words,  force each pattern to be studied. If -s+ is used, all
                 PCRE_STUDY_JIT_COMPILE flag is passed to pcre_study(),  caus-                 the JIT compile options are passed to pcre[16]_study(), caus-
                  ing  just-in-time  optimization  to be set up if it is avail-                   ing  just-in-time  optimization  to be set up if it is avail-
                 able. If the  /I  or  /D  option  is  present  on  a  pattern                 able, for both full and partial matching. Specific  JIT  com-
                 (requesting  output  about the compiled pattern), information                 pile options can be selected by following -s+ with a digit in
                 about the result of studying is not included when studying is                 the range 1 to 7, which selects the JIT compile modes as fol-
                 caused  only  by  -s  and neither -i nor -d is present on the                 lows:
                 command line. This behaviour means that the output from tests 
                 that  are run with and without -s should be identical, except 
                 when options that output information about the actual running 
                 of  a  match are set. The -M, -t, and -tm options, which give 
                 information about resources used, are likely to produce  dif- 
                 ferent  output with and without -s. Output may also differ if 
                 the /C option is present on an individual pattern. This  uses 
                 callouts  to  trace the the matching process, and this may be 
                 different between studied and non-studied  patterns.  If  the 
                 pattern contains (*MARK) items there may also be differences, 
                 for the same reason. The -s command line option can be  over- 
                 ridden  for  specific  patterns  that should never be studied 
                 (see the /S pattern modifier below). 
   
       -t        Run each compile, study, and match many times with  a  timer,                   1  normal match only
                 and  output resulting time per compile or match (in millisec-                   2  soft partial match only
                 onds). Do not set -m with -t, because you will then  get  the                   3  normal match and soft partial match
                 size  output  a  zillion  times,  and the timing will be dis-                   4  hard partial match only
                 torted. You can control the number  of  iterations  that  are                   6  soft and hard partial match
                 used  for timing by following -t with a number (as a separate                   7  all three modes (default)
 
                  If  -s++  is used instead of -s+ (with or without a following
                  digit), the text "(JIT)" is added to the  first  output  line
                  after a match or no match when JIT-compiled code was actually
                  used.
 
        If the /I or /D option is present on a pattern (requesting output about
        the  compiled pattern), information about the result of studying is not
        included when studying is caused only by -s and neither -i  nor  -d  is
        present  on the command line. This behaviour means that the output from
        tests that are run with and without -s should be identical, except when
        options that output information about the actual running of a match are
        set.
 
        The -M, -t, and -tm options, which  give  information  about  resources
        used,  are likely to produce different output with and without -s. Out-
        put may also differ if the /C option is present on an  individual  pat-
        tern.  This  uses  callouts to trace the the matching process, and this
        may be different between studied and non-studied patterns. If the  pat-
        tern contains (*MARK) items there may also be differences, for the same
        reason. The -s command line option can be overridden for specific  pat-
        terns that should never be studied (see the /S pattern modifier below).
 
        -t        Run  each  compile, study, and match many times with a timer,
                  and output resulting time per compile or match (in  millisec-
                  onds).  Do  not set -m with -t, because you will then get the
                  size output a zillion times, and  the  timing  will  be  dis-
                  torted.  You  can  control  the number of iterations that are
                  used for timing by following -t with a number (as a  separate
                  item on the command line). For example, "-t 1000" would iter-                   item on the command line). For example, "-t 1000" would iter-
                  ate 1000 times. The default is to iterate 500000 times.                   ate 1000 times. The default is to iterate 500000 times.
   
Line 108  COMMAND LINE OPTIONS Line 163  COMMAND LINE OPTIONS
   
 DESCRIPTION  DESCRIPTION
   
       If pcretest is given two filename arguments, it reads  from  the  first       If  pcretest  is  given two filename arguments, it re       If  pcretest  is  given two filename arguments, it reads from the first
        and writes to the second. If it is given only one filename argument, it         and writes to the second. If it is given only one filename argument, it
       reads from that file and writes to stdout.  Otherwise,  it  reads  from       reads  from  that  file  and writes to stdout. Otherwise, it reads from
       stdin  and  writes to stdout, and prompts for each line of input, using       stdin and writes to stdout, and prompts for each line of  input,  using
        "re>" to prompt for regular expressions, and "data>" to prompt for data         "re>" to prompt for regular expressions, and "data>" to prompt for data
        lines.         lines.
   
       When  pcretest  is  built,  a  configuration option can specify that it       When pcretest is built, a configuration  option  can  specify  that  it
       should be linked with the libreadline library. When this  is  done,  if       should  be  linked  with the libreadline library. When this is done, if
        the input is from a terminal, it is read using the readline() function.         the input is from a terminal, it is read using the readline() function.
       This provides line-editing and history facilities. The output from  the       This  provides line-editing and history facilities. The output from the
        -help option states whether or not readline() will be used.         -help option states whether or not readline() will be used.
   
        The program handles any number of sets of input on a single input file.         The program handles any number of sets of input on a single input file.
       Each set starts with a regular expression, and continues with any  num-       Each  set starts with a regular expression, and continues with any num-
        ber of data lines to be matched against the pattern.         ber of data lines to be matched against the pattern.
   
       Each  data line is matched separately and independently. If you want to       Each data line is matched separately and independently. If you want  to
        do multi-line matches, you have to use the \n escape sequence (or \r or         do multi-line matches, you have to use the \n escape sequence (or \r or
        \r\n, etc., depending on the newline setting) in a single line of input         \r\n, etc., depending on the newline setting) in a single line of input
       to encode the newline sequences. There is no limit  on  the  length  of       to  encode  the  newline  sequences. There is no limit on the length of
       data  lines;  the  input  buffer is automatically extended if it is too       data lines; the input buffer is automatically extended  if  it  is  too
        small.         small.
   
       An empty line signals the end of the data lines, at which point  a  new       An  empty  line signals the end of the data lines, at which point a new
       regular  expression is read. The regular expressions are given enclosed       regular expression is read. The regular expressions are given  enclosed
        in any non-alphanumeric delimiters other than backslash, for example:         in any non-alphanumeric delimiters other than backslash, for example:
   
          /(a|bc)x+yz/           /(a|bc)x+yz/
   
       White space before the initial delimiter is ignored. A regular  expres-       White  space before the initial delimiter is ignored. A regular expres-
       sion  may be continued over several input lines, in which case the new-       sion may be continued over several input lines, in which case the  new-
       line characters are included within it. It is possible to  include  the       line  characters  are included within it. It is possible to include the
        delimiter within the pattern by escaping it, for example         delimiter within the pattern by escaping it, for example
   
          /abc\/def/           /abc\/def/
   
       If  you  do  so, the escape and the delimiter form part of the pattern,       If you do so, the escape and the delimiter form part  of  the  pattern,
       but since delimiters are always non-alphanumeric, this does not  affect       but  since delimiters are always non-alphanumeric, this does not affect
       its  interpretation.   If the terminating delimiter is immediately fol-       its interpretation.  If the terminating delimiter is  immediately  fol-
        lowed by a backslash, for example,         lowed by a backslash, for example,
   
          /abc/\           /abc/\
   
       then a backslash is added to the end of the pattern. This  is  done  to       then  a  backslash  is added to the end of the pattern. This is done to
       provide  a  way of testing the error condition that arises if a pattern       provide a way of testing the error condition that arises if  a  pattern
        finishes with a backslash, because         finishes with a backslash, because
   
          /abc\/           /abc\/
   
       is interpreted as the first line of a pattern that starts with  "abc/",       is  interpreted as the first line of a pattern that starts wit"abc/",
        causing pcretest to read the next line as a continuation of the regular         causing pcretest to read the next line as a continuation of the regular
        expression.         expression.
   
   
 PATTERN MODIFIERS  PATTERN MODIFIERS
   
       A pattern may be followed by any number of modifiers, which are  mostly       A  pattern may be followed by any number of modifiers, which are mostly
       single  characters.  Following  Perl usage, these are referred to below       single characters. Following Perl usage, these are  referred  to  below
       as, for example, "the /i modifier", even though the  delimiter  of  the       as,  for  example,  "the /i modifier", even though the delimiter of the
       pattern  need  not always be a slash, and no slash is used when writing       pattern need not always be a slash, and no slash is used  when  writing
       modifiers. White space may appear between the final  pattern  delimiter       modifiers.  White  space may appear between the final pattern delimiter
        and the first modifier, and between the modifiers themselves.         and the first modifier, and between the modifiers themselves.
   
        The /i, /m, /s, and /x modifiers set the PCRE_CASELESS, PCRE_MULTILINE,         The /i, /m, /s, and /x modifiers set the PCRE_CASELESS, PCRE_MULTILINE,
       PCRE_DOTALL, or PCRE_EXTENDED  options,  respectively,  when  pcre_com-       PCRE_DOTALL, or PCRE_EXTENDED options, respectively, when pcre[16]_com-
       pile()  is  called. These four modifier letters have the same effect as       pile() is called. These four modifier letters have the same  effect  as
        they do in Perl. For example:         they do in Perl. For example:
   
          /caseless/i           /caseless/i
   
       The following table shows additional modifiers for  setting  PCRE  com-       The  following  table  shows additional modifiers for setting PCR       The  following  table  shows additional modifiers for setting PCR
        pile-time options that do not correspond to anything in Perl:         pile-time options that do not correspond to anything in Perl:
   
         /8              PCRE_UTF8         /8              PCRE_UTF8           ) when using the 8-bit
         /?              PCRE_NO_UTF8_CHECK         /?              PCRE_NO_UTF8_CHECK  )   library
 
          /8              PCRE_UTF16          ) when using the 16-bit
          /?              PCRE_NO_UTF16_CHECK )   library
 
          /A              PCRE_ANCHORED           /A              PCRE_ANCHORED
          /C              PCRE_AUTO_CALLOUT           /C              PCRE_AUTO_CALLOUT
          /E              PCRE_DOLLAR_ENDONLY           /E              PCRE_DOLLAR_ENDONLY
Line 203  PATTERN MODIFIERS Line 262  PATTERN MODIFIERS
          /<bsr_anycrlf>  PCRE_BSR_ANYCRLF           /<bsr_anycrlf>  PCRE_BSR_ANYCRLF
          /<bsr_unicode>  PCRE_BSR_UNICODE           /<bsr_unicode>  PCRE_BSR_UNICODE
   
       The  modifiers  that are enclosed in angle brackets are literal strings       The modifiers that are enclosed in angle brackets are  literal  strings
       as shown, including the angle brackets, but the letters within  can  be       as  shown,  including the angle brackets, but the letters within can be
       in  either case.  This example sets multiline matching with CRLF as the       in either case.  This example sets multiline matching with CRLF as  the
        line ending sequence:         line ending sequence:
   
          /^abc/m<CRLF>           /^abc/m<CRLF>
   
       As well as turning on the PCRE_UTF8 option, the /8 modifier also causes       As  well  as turning on the PCRE_UTF8/16 option, the /8 modifier causes
       any  non-printing  characters in output strings to be printed using the       all non-printing characters in output strings to be printed  using  the
       \x{hh...} notation if they are valid UTF-8 sequences. Full  details  of       \x{hh...}  notation. Otherwise, those less than 0x100 are output in hex
       the PCRE options are given in the pcreapi documentation. 
   
          Full details of the PCRE options are given in  the  pcreapi  documenta-
          tion.
   
    Finding all matches in a string     Finding all matches in a string
   
        Searching  for  all  possible matches within each subject string can be         Searching  for  all  possible matches within each subject string can be
        requested by the /g or /G modifier. After  finding  a  match,  PCRE  is         requested by the /g or /G modifier. After  finding  a  match,  PCRE  is
        called again to search the remainder of the subject string. The differ-         called again to search the remainder of the subject string. The differ-
        ence between /g and /G is that the former uses the startoffset argument         ence between /g and /G is that the former uses the startoffset argument
       to  pcre_exec()  to  start  searching  at a new point within the entire       to  pcre[16]_exec() to start searching at a new point within the entire
        string (which is in effect what Perl does), whereas the  latter  passes         string (which is in effect what Perl does), whereas the  latter  passes
        over  a  shortened  substring.  This makes a difference to the matching         over  a  shortened  substring.  This makes a difference to the matching
        process if the pattern begins with a lookbehind assertion (including \b         process if the pattern begins with a lookbehind assertion (including \b
        or \B).         or \B).
   
       If  any  call  to  pcre_exec()  in a /g or /G sequence matches an empty       If  any call to pcre[16]_exec() in a /g or /G sequence matches an empty
        string, the next  call  is  done  with  the  PCRE_NOTEMPTY_ATSTART  and         string, the next  call  is  done  with  the  PCRE_NOTEMPTY_ATSTART  and
        PCRE_ANCHORED  flags  set  in  order  to search for another, non-empty,         PCRE_ANCHORED  flags  set  in  order  to search for another, non-empty,
        match at the same point. If this second match fails, the  start  offset         match at the same point. If this second match fails, the  start  offset
Line 248  PATTERN MODIFIERS Line 310  PATTERN MODIFIERS
        fier  appears  twice, the same action is taken for captured substrings.         fier  appears  twice, the same action is taken for captured substrings.
        In each case the remainder is output on the following line with a  plus         In each case the remainder is output on the following line with a  plus
        character  following  the  capture number. Note that this modifier must         character  following  the  capture number. Note that this modifier must
       not immediately follow the /S modifier because /S+ has another meaning.       not immediately follow the /S modifier because /S+ and /S++ have  other
        meanings.
   
       The /= modifier requests that the  values  of  all  potential  captured       The  /=  modifier  requests  that  the values of all potential captured
       parentheses  be  output  after a match by pcre_exec(). By default, only       parentheses be output after a match. By default, only those up  to  the
       those up to the highest one actually used in the match are output (cor-       highest one actually used in the match are output (corresponding to the
       responding  to the return code from pcre_exec()). Values in the offsets       return code from pcre[16]_exec()). Values in the offsets vector  corre-
       vector corresponding to higher numbers should be set to -1,  and  these       sponding to higher numbers should be set to -1, and these are output as
       are  output  as  "<unset>".  This modifier gives a way of checking that       "<unset>". This modifier gives a way of checking that this  is  happen-
       this is happening.       ing.
   
       The /B modifier is a debugging feature. It requests that pcretest  out-       The  /B modifier is a debugging feature. It requests that pcretest out-
       put  a representation of the compiled byte code after compilation. Nor-       put a representation of the compiled code after  compilation.  Normally
       mally this information contains length and offset values;  however,  if       this  information  contains length and offset values; however, if /Z is
       /Z  is also present, this data is replaced by spaces. This is a special       also present, this data is replaced by spaces. This is a  special  fea-
       feature for use in the automatic test scripts; it ensures that the same       ture  for  use  in the automatic test scripts; it ensures that the same
        output is generated for different internal link sizes.         output is generated for different internal link sizes.
   
       The  /D modifier is a PCRE debugging feature, and is equivalent to /BI,       The /D modifier is a PCRE debugging feature, and is equivalent to  /BI,
        that is, both the /B and the /I modifiers.         that is, both the /B and the /I modifiers.
   
       The /F modifier causes pcretest to flip the byte order of the fields in       The  /F  modifier  causes pcretest to flip the byte order of the 2-byte
       the  compiled  pattern  that  contain  2-byte  and 4-byte numbers. This       and 4-byte fields in the compiled pattern. This facility is for testing
       facility is for testing the feature in PCRE that allows it  to  execute       the  feature  in PCRE that allows it to execute patterns that were com-
       patterns that were compiled on a host with a different endianness. This       piled on a host with a different endianness. This feature is not avail-
       feature is not available when the POSIX  interface  to  PCRE  is  being       able  when the POSIX interface to PCRE is being used, that is, when the
       used,  that is, when the /P pattern modifier is specified. See also the       /P pattern modifier is specified. See also the section about saving and
       section about saving and reloading compiled patterns below.       reloading compiled patterns below.
   
       The /I modifier requests that pcretest  output  information  about  the       The  /I  modifier  requests  that pcretest output information about the
       compiled  pattern (whether it is anchored, has a fixed first character,       compiled pattern (whether it is anchored, has a fixed first  character,
       and so on). It does this by calling pcre_fullinfo() after  compiling  a       and so on). It does this by calling pcre[16]_fullinfo() after compiling
       pattern.  If  the pattern is studied, the results of that are also out-       a pattern. If the pattern is studied, the results of that are also out-
        put.         put.
   
       The /K modifier requests pcretest to show names from backtracking  con-       The  /K modifier requests pcretest to show names from backtracking con-
       trol  verbs  that  are  returned  from  calls to pcre_exec(). It causes       trol verbs that are returned from calls to pcre[16]_exec().  It  causes
       pcretest to create a pcre_extra block if one has not already been  cre-       pcretest  to  create a pcre[16]_extra block if one has not already been
       ated by a call to pcre_study(), and to set the PCRE_EXTRA_MARK flag and       created by a call to pcre[16]_study(), and to set  the  PCRE_EXTRA_MARK
       the mark field within it, every time that pcre_exec() is called. If the       flag  and  the mark field within it, every time that pcre[16]_exec() is
       variable  that  the  mark field points to is non-NULL for a match, non-       called. If the variable that the mark field points to is non-NULL for a
       match, or partial match, pcretest prints the string to which it points.       match, non-match, or partial match, pcretest prints the string to which
       For a match, this is shown on a line by itself, tagged with "MK:".  For       it points. For a match, this is shown on a line by itself, tagged  with
       a non-match it is added to the message.       "MK:". For a non-match it is added to the message.
   
       The /L modifier must be followed directly by the name of a locale,  for       The  /L modifier must be followed directly by the name of a locale, for
        example,         example,
   
          /pattern/Lfr_FR           /pattern/Lfr_FR
   
        For this reason, it must be the last modifier. The given locale is set,         For this reason, it must be the last modifier. The given locale is set,
       pcre_maketables() is called to build a set of character tables for  the       pcre[16]_maketables()  is called to build a set of character tables for
       locale,  and  this  is then passed to pcre_compile() when compiling the       the locale, and this is then passed to pcre[16]_compile() when  compil-
       regular expression. Without an /L (or /T) modifier, NULL is  passed  as       ing  the  regular  expression.  Without an /L (or /T) modifier, NULL is
       the tables pointer; that is, /L applies only to the expression on which       passed as the tables pointer; that is, /L applies only to  the  expres-
       it appears.       sion on which it appears.
   
       The /M modifier causes the size of memory block used to hold  the  com-       The  /M  modifier  causes the size in bytes of the memory block used to
       piled  pattern to be output. This does not include the size of the pcre       hold the compiled pattern to be output. This does not include the  size
       block; it is just the actual compiled data. If the pattern is  success-       of the pcre[16] block; it is just the actual compiled data. If the pat-
       fully  studied  with the PCRE_STUDY_JIT_COMPILE option, the size of the       tern is successfully studied with  the  PCRE_STUDY_JIT_COMPILE  option,
       JIT compiled code is also output.       the size of the JIT compiled code is also output.
   
       If the /S modifier appears once, it causes pcre_study()  to  be  called       If  the  /S  modifier  appears  once,  it causes pcre[16]_study() to be
       after  the  expression has been compiled, and the results used when the       called after the expression has been compiled,  and  the  results  used
       expression is matched. If /S appears  twice,  it  suppresses  studying,       when  the  expression  is  matched.  If /S appears twice, it suppresses
       even if it was requested externally by the -s command line option. This       studying, even if it was requested externally by the  -s  command  line
       makes it possible to specify that certain patterns are always  studied,       option.  This  makes  it  possible to specify that certain patterns are
       and others are never studied, independently of -s. This feature is used       always studied, and others are never studied, independently of -s. This
       in the test files in a few cases where the output is different when the       feature  is  used  in the test files in a few cases where the output is
       pattern is studied.       different when the pattern is studied.
   
       If  the  /S modifier is immediately followed by a + character, the call       If the /S modifier is immediately followed by a + character,  the  call
       to  pcre_study()  is  made  with  the  PCRE_STUDY_JIT_COMPILE   option,       to  pcre[16]_study() is made with all the JIT study options, requesting
       requesting  just-in-time  optimization support if it is available. Note       just-in-time optimization support if it is available, for  both  normal
       that there is also a /+ modifier; it  must  not  be  given  immediately       and  partial matching. If you want to restrict the JIT compiling modes,
       after  /S  because this will be misinterpreted. If JIT studying is suc-       you can follow /S+ with a digit in the range 1 to 7:
       cessful, it will automatically be used when pcre_exec() is run,  except 
       when  incompatible  run-time  options  are specified. These include the 
       partial matching options; a complete list is given in the pcrejit docu- 
       mentation.  See  also the \J escape sequence below for a way of setting 
       the size of the JIT stack. 
   
       The /T modifier must be followed by a single digit. It  causes  a  spe-         1  normal match only
       cific  set of built-in character tables to be passed to pcre_compile().         2  soft partial match only
       It is used in the standard PCRE tests to check behaviour with different         3  normal match and soft partial match
       character tables. The digit specifies the tables as follows:         4  hard partial match only
          6  soft and hard partial match
          7  all three modes (default)
   
          If /S++ is used instead of /S+ (with or without a following digit), the
          text  "(JIT)"  is  added  to  the first output line after a match or no
          match when JIT-compiled code was actually used.
   
          Note that there is also an independent /+  modifier;  it  must  not  be
          given immediately after /S or /S+ because this will be misinterpreted.
   
          If JIT studying is successful, the compiled JIT code will automatically
          be used when pcre[16]_exec() is run, except when incompatible  run-time
          options are specified. For more details, see the pcrejit documentation.
          See also the \J escape sequence below for a way of setting the size  of
          the JIT stack.
   
          The  /T  modifier  must be followed by a single digit. It causes a spe-
          cific set of built-in character tables to be  passed  to  pcre[16]_com-
          pile().  It  is used in the standard PCRE tests to check behaviour with
          different character tables. The digit specifies the tables as follows:
   
          0   the default ASCII tables, as distributed in           0   the default ASCII tables, as distributed in
                pcre_chartables.c.dist                 pcre_chartables.c.dist
          1   a set of tables defining ISO 8859 characters           1   a set of tables defining ISO 8859 characters
   
       In  table 1, some characters whose codes are greater than 128 are iden-       In table 1, some characters whose codes are greater than 128 are  iden-
        tified as letters, digits, spaces, etc.         tified as letters, digits, spaces, etc.
   
    Using the POSIX wrapper API     Using the POSIX wrapper API
   
       The /P modifier causes pcretest to call PCRE via the POSIX wrapper  API       The  /P modifier causes pcretest to call PCRE via the POSIX wrapper API
       rather than its native API. When /P is set, the following modifiers set       rather than its native API. This supports only the 8-bit library.  When
       options for the regcomp() function:       /P  is set, the following modifiers set options for the regcomp() func-
        tion:
   
          /i    REG_ICASE           /i    REG_ICASE
          /m    REG_NEWLINE           /m    REG_NEWLINE
Line 362  PATTERN MODIFIERS Line 441  PATTERN MODIFIERS
   
 DATA LINES  DATA LINES
   
       Before  each  data  line is passed to pcre_exec(), leading and trailing       Before  each data line is passed to pcre[16]_exec(), leading and trail-
       white space is removed, and it is then scanned for \ escapes.  Some  of       ing white space is removed, and it is then scanned for \ escapes.  Some
       these  are  pretty esoteric features, intended for checking out some of       of  these  are pretty esoteric features, intended for checking out some
       the more complicated features of PCRE. If you are just  testing  "ordi-       of the more complicated features of  PCRE.  If  you  are  just  testing
       nary"  regular  expressions,  you probably don't need any of these. The       "ordinary"  regular  expressions, you probably don't need any of these.
       following escapes are recognized:       The following escapes are recognized:
   
          \a         alarm (BEL, \x07)           \a         alarm (BEL, \x07)
          \b         backspace (\x08)           \b         backspace (\x08)
Line 379  DATA LINES Line 458  DATA LINES
          \r         carriage return (\x0d)           \r         carriage return (\x0d)
          \t         tab (\x09)           \t         tab (\x09)
          \v         vertical tab (\x0b)           \v         vertical tab (\x0b)
         \nnn       octal character (up to 3 octal digits)         \nnn       octal character (up to 3 octal digits); always
                      always a byte unless > 255 in UTF-8 mode                      a byte unless > 255 in UTF-8 or 16-bit mode
          \xhh       hexadecimal byte (up to 2 hex digits)           \xhh       hexadecimal byte (up to 2 hex digits)
         \x{hh...}  hexadecimal character, any number of digits         \x{hh...}  hexadecimal character (any number of hex digits)
                      in UTF-8 mode         \A         pass the PCRE_ANCHORED option to pcre[16]_exec()
         \A         pass the PCRE_ANCHORED option to pcre_exec()                      or pcre[16]_dfa_exec()
                      or pcre_dfa_exec()         \B         pass the PCRE_NOTBOL option to pcre[16]_exec()
         \B         pass the PCRE_NOTBOL option to pcre_exec()                      or pcre[16]_dfa_exec()
                      or pcre_dfa_exec()         \Cdd       call pcre[16]_copy_substring() for substring dd
         \Cdd       call pcre_copy_substring() for substring dd 
                       after a successful match (number less than 32)                        after a successful match (number less than 32)
         \Cname     call pcre_copy_named_substring() for substring         \Cname     call pcre[16]_copy_named_substring() for substring
                       "name" after a successful match (name termin-                        "name" after a successful match (name termin-
                       ated by next non alphanumeric character)                        ated by next non alphanumeric character)
          \C+        show the current captured substrings at callout           \C+        show the current captured substrings at callout
Line 402  DATA LINES Line 480  DATA LINES
                       reached for the nth time                        reached for the nth time
          \C*n       pass the number n (may be negative) as callout           \C*n       pass the number n (may be negative) as callout
                       data; this is used as the callout return value                        data; this is used as the callout return value
         \D         use the pcre_dfa_exec() match function         \D         use the pcre[16]_dfa_exec() match function
         \F         only shortest match for pcre_dfa_exec()         \F         only shortest match for pcre[16]_dfa_exec()
         \Gdd       call pcre_get_substring() for substring dd         \Gdd       call pcre[16]_get_substring() for substring dd
                       after a successful match (number less than 32)                        after a successful match (number less than 32)
         \Gname     call pcre_get_named_substring() for substring         \Gname     call pcre[16]_get_named_substring() for substring
                       "name" after a successful match (name termin-                        "name" after a successful match (name termin-
                       ated by next non-alphanumeric character)                        ated by next non-alphanumeric character)
          \Jdd       set up a JIT stack of dd kilobytes maximum (any           \Jdd       set up a JIT stack of dd kilobytes maximum (any
                       number of digits)                        number of digits)
         \L         call pcre_get_substringlist() after a         \L         call pcre[16]_get_substringlist() after a
                       successful match                        successful match
          \M         discover the minimum MATCH_LIMIT and           \M         discover the minimum MATCH_LIMIT and
                       MATCH_LIMIT_RECURSION settings                        MATCH_LIMIT_RECURSION settings
         \N         pass the PCRE_NOTEMPTY option to pcre_exec()         \N         pass the PCRE_NOTEMPTY option to pcre[16]_exec()
                      or pcre_dfa_exec(); if used twice, pass the                      or pcre[16]_dfa_exec(); if used twice, pass the
                       PCRE_NOTEMPTY_ATSTART option                        PCRE_NOTEMPTY_ATSTART option
          \Odd       set the size of the output vector passed to           \Odd       set the size of the output vector passed to
                      pcre_exec() to dd (any number of digits)                      pcre[16]_exec() to dd (any number of digits)
         \P         pass the PCRE_PARTIAL_SOFT option to pcre_exec()         \P         pass the PCRE_PARTIAL_SOFT option to pcre[16]_exec()
                      or pcre_dfa_exec(); if used twice, pass the                      or pcre[16]_dfa_exec(); if used twice, pass the
                       PCRE_PARTIAL_HARD option                        PCRE_PARTIAL_HARD option
          \Qdd       set the PCRE_MATCH_LIMIT_RECURSION limit to dd           \Qdd       set the PCRE_MATCH_LIMIT_RECURSION limit to dd
                       (any number of digits)                        (any number of digits)
         \R         pass the PCRE_DFA_RESTART option to pcre_dfa_exec()         \R         pass the PCRE_DFA_RESTART option to pcre[16]_dfa_exec()
          \S         output details of memory get/free calls during matching           \S         output details of memory get/free calls during matching
         \Y         pass the PCRE_NO_START_OPTIMIZE option to pcre_exec()         \Y         pass the PCRE_NO_START_OPTIMIZE option to pcre[16]_exec()
                      or pcre_dfa_exec()                      or pcre[16]_dfa_exec()
         \Z         pass the PCRE_NOTEOL option to pcre_exec()         \Z         pass the PCRE_NOTEOL option to pcre[16]_exec()
                      or pcre_dfa_exec()                      or pcre[16]_dfa_exec()
         \?         pass the PCRE_NO_UTF8_CHECK option to         \?         pass the PCRE_NO_UTF[8|16]_CHECK option to
                      pcre_exec() or pcre_dfa_exec()                      pcre[16]_exec() or pcre[16]_dfa_exec()
          \>dd       start the match at offset dd (optional "-"; then           \>dd       start the match at offset dd (optional "-"; then
                       any number of digits); this sets the startoffset                        any number of digits); this sets the startoffset
                      argument for pcre_exec() or pcre_dfa_exec()                      argument for pcre[16]_exec() or pcre[16]_dfa_exec()
         \<cr>      pass the PCRE_NEWLINE_CR option to pcre_exec()         \<cr>      pass the PCRE_NEWLINE_CR option to pcre[16]_exec()
                      or pcre_dfa_exec()                      or pcre[16]_dfa_exec()
         \<lf>      pass the PCRE_NEWLINE_LF option to pcre_exec()         \<lf>      pass the PCRE_NEWLINE_LF option to pcre[16]_exec()
                      or pcre_dfa_exec()                      or pcre[16]_dfa_exec()
         \<crlf>    pass the PCRE_NEWLINE_CRLF option to pcre_exec()         \<crlf>    pass the PCRE_NEWLINE_CRLF option to pcre[16]_exec()
                      or pcre_dfa_exec()                      or pcre[16]_dfa_exec()
         \<anycrlf> pass the PCRE_NEWLINE_ANYCRLF option to pcre_exec()         \<anycrlf> pass the PCRE_NEWLINE_ANYCRLF option to pcre[16]_exec()
                      or pcre_dfa_exec()                      or pcre[16]_dfa_exec()
         \<any>     pass the PCRE_NEWLINE_ANY option to pcre_exec()         \<any>     pass the PCRE_NEWLINE_ANY option to pcre[16]_exec()
                      or pcre_dfa_exec()                      or pcre[16]_dfa_exec()
   
       Note that \xhh always specifies one byte,  even  in  UTF-8  mode;  this       The use of \x{hh...} is not dependent on the use of the /8 modifier  on
       makes it possible to construct invalid UTF-8 sequences for testing pur-       the  pattern. It is recognized always. There may be any number of hexa-
       poses. On the other hand, \x{hh} is interpreted as a UTF-8 character in       decimal digits inside the braces; invalid  values  provoke  error  mes-
       UTF-8  mode, generating more than one byte if the value is greater than       sages.
       127. When not in UTF-8 mode, it generates one byte for values less than 
       256, and causes an error for greater values. 
   
       The  escapes  that  specify  line ending sequences are literal strings,       Note  that  \xhh  specifies one byte rather than one character in UTF-8
        mode; this makes it possible to construct invalid UTF-8  sequences  for
        testing  purposes.  On the other hand, \x{hh} is interpreted as a UTF-8
        character in UTF-8 mode, generating more than one byte if the value  is
        greater  than  127.   When testing the 8-bit library not in UTF-8 mode,
        \x{hh} generates one byte for values less than 256, and causes an error
        for greater values.
 
        In UTF-16 mode, all 4-digit \x{hhhh} values are accepted. This makes it
        possible to construct invalid UTF-16 sequences for testing purposes.
 
        The escapes that specify line ending  sequences  are  literal  strings,
        exactly as shown. No more than one newline setting should be present in         exactly as shown. No more than one newline setting should be present in
        any data line.         any data line.
   
       A  backslash  followed by anything else just escapes the anything else.       A backslash followed by anything else just escapes the  anything  else.
       If the very last character is a backslash, it is ignored. This gives  a       If  the very last character is a backslash, it is ignored. This gives a
       way  of  passing  an empty line as data, since a real empty line termi-       way of passing an empty line as data, since a real  empty  line  termi-
        nates the data input.         nates the data input.
   
       The \J escape provides a way of setting the maximum stack size that  is       The  \J escape provides a way of setting the maximum stack size that is
       used  by the just-in-time optimization code. It is ignored if JIT opti-       used by the just-in-time optimization code. It is ignored if JIT  opti-
       mization is not being used. Providing a stack that is larger  than  the       mization  is  not being used. Providing a stack that is larger than the
        default 32K is necessary only for very complicated patterns.         default 32K is necessary only for very complicated patterns.
   
       If  \M  is present, pcretest calls pcre_exec() several times, with dif-       If \M is present, pcretest calls pcre[16]_exec()  several  times,  with
       ferent values in the match_limit and  match_limit_recursion  fields  of       different values in the match_limit and match_limit_recursion fields of
       the  pcre_extra  data structure, until it finds the minimum numbers for       the pcre[16]_extra data structure, until it finds the  minimum  numbers
       each parameter  that  allow  pcre_exec()  to  complete  without  error.       for  each  parameter  that  allow  pcre[16]_exec()  to complete without
       Because  this  is testing a specific feature of the normal interpretive       error. Because this is testing a specific feature of the normal  inter-
       pcre_exec() execution, the use of any JIT optimization that might  have       pretive pcre[16]_exec() execution, the use of any JIT optimization that
       been set up by the /S+ qualifier of -s+ option is disabled.       might have been set up by the /S+ qualifier of -s+ option is disabled.
   
       The  match_limit number is a measure of the amount of backtracking that       The match_limit number is a measure of the amount of backtracking  that
       takes place, and checking it out can be instructive.  For  most  simple       takes  place,  and  checking it out can be instructive. For most simple
       matches,  the  number  is quite small, but for patterns with very large       matches, the number is quite small, but for patterns  with  very  large
       numbers of matching possibilities, it can  become  large  very  quickly       numbers  of  matching  possibilities,  it can become large very quickly
       with  increasing  length  of  subject string. The match_limit_recursion       with increasing length of  subject  string.  The  match_limit_recursion
       number is a measure of how much stack (or, if  PCRE  is  compiled  with       number  is  a  measure  of how much stack (or, if PCRE is compiled with
       NO_RECURSE,  how  much  heap)  memory  is  needed to complete the match       NO_RECURSE, how much heap) memory  is  needed  to  complete  the  match
        attempt.         attempt.
   
       When \O is used, the value specified may be higher or  lower  than  the       When  \O  is  used, the value specified may be higher or lower than the
        size set by the -O command line option (or defaulted to 45); \O applies         size set by the -O command line option (or defaulted to 45); \O applies
       only to the call of pcre_exec() for the line in which it appears.       only to the call of pcre[16]_exec() for the line in which it appears.
   
       If the /P modifier was present on the pattern, causing the POSIX  wrap-       If  the /P modifier was present on the pattern, causing the POSIX wrap-
       per  API  to  be  used, the only option-setting sequences that have any       per API to be used, the only option-setting  sequences  that  have  any
       effect are \B,  \N,  and  \Z,  causing  REG_NOTBOL,  REG_NOTEMPTY,  and       effect  are  \B,  \N,  and  \Z,  causing  REG_NOTBOL, REG_NOTEMPTY, and
        REG_NOTEOL, respectively, to be passed to regexec().         REG_NOTEOL, respectively, to be passed to regexec().
   
        The  use of \x{hh...} to represent UTF-8 characters is not dependent on  
        the use of the /8 modifier on the pattern.  It  is  recognized  always.  
        There  may  be  any number of hexadecimal digits inside the braces. The  
        result is from one to six bytes,  encoded  according  to  the  original  
        UTF-8  rules  of  RFC  2279.  This  allows for values in the range 0 to  
        0x7FFFFFFF. Note that not all of those are valid Unicode  code  points,  
        or  indeed  valid  UTF-8 characters according to the later rules in RFC  
        3629.  
   
   
 THE ALTERNATIVE MATCHING FUNCTION  THE ALTERNATIVE MATCHING FUNCTION
   
        By  default,  pcretest  uses  the  standard  PCRE  matching   function,         By  default,  pcretest  uses  the  standard  PCRE  matching   function,
       pcre_exec() to match each data line. From release 6.0, PCRE supports an       pcre[16]_exec() to match each data line. PCRE also supports an alterna-
       alternative matching function, pcre_dfa_test(),  which  operates  in  a       tive matching function, pcre[16]_dfa_test(), which operates in  a  dif-
       different  way,  and has some restrictions. The differences between the       ferent  way, and has some restrictions. The differences between the two
       two functions are described in the pcrematching documentation.       functions are described in the pcrematching documentation.
   
        If a data line contains the \D escape sequence, or if the command  line         If a data line contains the \D escape sequence, or if the command  line
       contains  the -dfa option, the alternative matching function is called.       contains  the  -dfa  option, the alternative matching function is used.
        This function finds all possible matches at a given point. If, however,         This function finds all possible matches at a given point. If, however,
        the  \F escape sequence is present in the data line, it stops after the         the  \F escape sequence is present in the data line, it stops after the
        first match is found. This is always the shortest possible match.         first match is found. This is always the shortest possible match.
Line 522  THE ALTERNATIVE MATCHING FUNCTION Line 600  THE ALTERNATIVE MATCHING FUNCTION
 DEFAULT OUTPUT FROM PCRETEST  DEFAULT OUTPUT FROM PCRETEST
   
        This section describes the output when the  normal  matching  function,         This section describes the output when the  normal  matching  function,
       pcre_exec(), is being used.       pcre[16]_exec(), is being used.
   
        When a match succeeds, pcretest outputs the list of captured substrings         When a match succeeds, pcretest outputs the list of captured substrings
       that pcre_exec() returns, starting with number 0 for  the  string  that       that pcre[16]_exec() returns, starting with number  0  for  the  string
       matched  the  whole  pattern. Otherwise, it outputs "No match" when the       that  matched  the whole pattern. Otherwise, it outputs "No match" when
       return is PCRE_ERROR_NOMATCH, and "Partial match:" followed by the par-       the return is PCRE_ERROR_NOMATCH, and "Partial match:" followed by  the
       tially  matching substring when pcre_exec() returns PCRE_ERROR_PARTIAL.       partially    matching    substring    when    pcre[16]_exec()   returns
       (Note that this is the entire substring that was inspected  during  the       PCRE_ERROR_PARTIAL. (Note that this is the entire  substring  that  was
       partial  match; it may include characters before the actual match start       inspected  during  the  partial match; it may include characters before
       if a lookbehind assertion, \K, \b, or \B was involved.) For  any  other       the actual match start if a lookbehind assertion, \K,  \b,  or  \B  was
       return,  pcretest  outputs  the  PCRE negative error number and a short       involved.)  For  any  other  return, pcretest outputs the PCRE negative
       descriptive phrase. If the error is a failed UTF-8  string  check,  the       error number and a short descriptive phrase. If the error is  a  failed
       byte  offset  of the start of the failing character and the reason code       UTF  string check, the offset of the start of the failing character and
       are also output, provided that the size of  the  output  vector  is  at       the reason code are also output, provided that the size of  the  output
       least two. Here is an example of an interactive pcretest run.       vector  is  at least two. Here is an example of an interactive pcretest
        run.
   
          $ pcretest           $ pcretest
          PCRE version 8.13 2011-04-30           PCRE version 8.13 2011-04-30
Line 549  DEFAULT OUTPUT FROM PCRETEST Line 628  DEFAULT OUTPUT FROM PCRETEST
          No match           No match
   
        Unset capturing substrings that are not followed by one that is set are         Unset capturing substrings that are not followed by one that is set are
       not returned by pcre_exec(), and are not shown by pcretest. In the fol-       not  returned by pcre[16]_exec(), and are not shown by pcretest. In the
       lowing  example, there are two capturing substrings, but when the first       following example, there are two capturing  substrings,  but  when  the
       data line is matched, the second, unset  substring  is  not  shown.  An       first  data  line is matched, the second, unset substring is not shown.
       "internal"  unset  substring  is  shown as "<unset>", as for the second       An "internal" unset substring is shown as "<unset>", as for the  second
        data line.         data line.
   
            re> /(a)|(b)/             re> /(a)|(b)/
Line 564  DEFAULT OUTPUT FROM PCRETEST Line 643  DEFAULT OUTPUT FROM PCRETEST
           1: <unset>            1: <unset>
           2: b            2: b
   
       If the strings contain any non-printing characters, they are output  as       If  the strings contain any non-printing characters, they are output as
       \0x  escapes,  or  as \x{...} escapes if the /8 modifier was present on       \xhh escapes if the value is less than 256 and UTF  mode  is  not  set.
       the pattern. See below for the definition of  non-printing  characters.       Otherwise they are output as \x{hh...} escapes. See below for the defi-
       If  the pattern has the /+ modifier, the output for substring 0 is fol-       nition of non-printing characters. If the pattern has the /+  modifier,
       lowed by the the rest of the subject string, identified  by  "0+"  like       the  output  for substring 0 is followed by the the rest of the subject
       this:       string, identified by "0+" like this:
   
            re> /cat/+             re> /cat/+
          data> cataract           data> cataract
           0: cat            0: cat
           0+ aract            0+ aract
   
       If  the  pattern  has  the /g or /G modifier, the results of successive       If the pattern has the /g or /G modifier,  the  results  of  successive
        matching attempts are output in sequence, like this:         matching attempts are output in sequence, like this:
   
            re> /\Bi(\w\w)/g             re> /\Bi(\w\w)/g
Line 588  DEFAULT OUTPUT FROM PCRETEST Line 667  DEFAULT OUTPUT FROM PCRETEST
           0: ipp            0: ipp
           1: pp            1: pp
   
       "No match" is output only if the first match attempt fails. Here is  an       "No  match" is output only if the first match attempt fails. Here ian
       example  of a failure message (the offset 4 that is specified by \>4 is       example of a failure message (the offset 4 that is specified by \>4  is
        past the end of the subject string):         past the end of the subject string):
   
            re> /xyz/             re> /xyz/
          data> xyz\>4           data> xyz\>4
          Error -24 (bad offset value)           Error -24 (bad offset value)
   
       If any of the sequences \C, \G, or \L are present in a data  line  that       If  any  of the sequences \C, \G, or \L are present in a data line that
       is  successfully  matched,  the substrings extracted by the convenience       is successfully matched, the substrings extracted  by  the  convenience
        functions are output with C, G, or L after the string number instead of         functions are output with C, G, or L after the string number instead of
        a colon. This is in addition to the normal full list. The string length         a colon. This is in addition to the normal full list. The string length
       (that is, the return from the extraction function) is given  in  paren-       (that  is,  the return from the extraction function) is given in paren-
        theses after each string for \C and \G.         theses after each string for \C and \G.
   
        Note that whereas patterns can be continued over several lines (a plain         Note that whereas patterns can be continued over several lines (a plain
        ">" prompt is used for continuations), data lines may not. However new-         ">" prompt is used for continuations), data lines may not. However new-
       lines  can  be included in data by means of the \n escape (or \r, \r\n,       lines can be included in data by means of the \n escape (or  \r,  \r\n,
        etc., depending on the newline sequence setting).         etc., depending on the newline sequence setting).
   
   
 OUTPUT FROM THE ALTERNATIVE MATCHING FUNCTION  OUTPUT FROM THE ALTERNATIVE MATCHING FUNCTION
   
       When the alternative matching function, pcre_dfa_exec(),  is  used  (by       When  the  alternative  matching function, pcre[16]_dfa_exec(), is used
       means  of  the \D escape sequence or the -dfa command line option), the       (by means of the \D escape sequence or the -dfa command  line  option),
       output consists of a list of all the matches that start  at  the  first       the  output  consists  of  a  list of all the matches that start at the
       point in the subject where there is at least one match. For example:       first point in the subject where there is at least one match. For exam-
        ple:
   
            re> /(tang|tangerine|tan)/             re> /(tang|tangerine|tan)/
          data> yellow tangerine\D           data> yellow tangerine\D
Line 670  CALLOUTS Line 750  CALLOUTS
        tion  is  called  during  matching. This works with both matching func-         tion  is  called  during  matching. This works with both matching func-
        tions. By default, the called function displays the callout number, the         tions. By default, the called function displays the callout number, the
        start  and  current  positions in the text at the callout time, and the         start  and  current  positions in the text at the callout time, and the
       next pattern item to be tested. For example, the output       next pattern item to be tested. For example:
   
          --->pqrabcdef           --->pqrabcdef
            0    ^  ^     \d             0    ^  ^     \d
   
       indicates that callout number 0 occurred for a match  attempt  starting       This output indicates that  callout  number  0  occurred  for  a  match
       at  the fourth character of the subject string, when the pointer was at       attempt  starting  at  the fourth character of the subject string, when
       the seventh character of the data, and when the next pattern  item  was       the pointer was at the seventh character of the data, and when the next
       \d.  Just  one  circumflex is output if the start and current positions       pattern  item  was  \d.  Just one circumflex is output if the start and
       are the same.       current positions are the same.
   
        Callouts numbered 255 are assumed to be automatic callouts, inserted as         Callouts numbered 255 are assumed to be automatic callouts, inserted as
        a  result  of the /C pattern modifier. In this case, instead of showing         a  result  of the /C pattern modifier. In this case, instead of showing
Line 779  SAVING AND RELOADING COMPILED PATTERNS Line 859  SAVING AND RELOADING COMPILED PATTERNS
        You  can copy a file written by pcretest to a different host and reload         You  can copy a file written by pcretest to a different host and reload
        it there, even if the new host has opposite endianness to  the  one  on         it there, even if the new host has opposite endianness to  the  one  on
        which  the pattern was compiled. For example, you can compile on an i86         which  the pattern was compiled. For example, you can compile on an i86
       machine and run on a SPARC machine.       machine and run on a SPARC machine. When a pattern  is  reloaded  on  a
        host with different endianness, the confirmation message is changed to:
   
       File names for saving and reloading can be absolute  or  relative,  but         Compiled pattern (byte-inverted) loaded from /some/file
       note  that the shell facility of expanding a file name that starts with
        The test suite contains some saved pre-compiled patterns with different
        endianness. These are reloaded using "<!" instead  of  just  "<".  This
        suppresses the "(byte-inverted)" text so that the output is the same on
        all hosts. It also forces debugging output once the  pattern  has  been
        reloaded.
 
        File  names  for  saving and reloading can be absolute or relative, but
        note that the shell facility of expanding a file name that starts  with
        a tilde (~) is not available.         a tilde (~) is not available.
   
       The ability to save and reload files in pcretest is intended for  test-       The  ability to save and reload files in pcretest is intended for test-
       ing  and experimentation. It is not intended for production use because       ing and experimentation. It is not intended for production use  because
       only a single pattern can be written to a file. Furthermore,  there  is       only  a  single pattern can be written to a file. Furthermore, there is
       no  facility  for  supplying  custom  character  tables  for use with a       no facility for supplying  custom  character  tables  for  use  with  a
       reloaded pattern. If the original  pattern  was  compiled  with  custom       reloaded  pattern.  If  the  original  pattern was compiled with custom
       tables,  an  attempt to match a subject string using a reloaded pattern       tables, an attempt to match a subject string using a  reloaded  pattern
       is likely to cause pcretest to crash.  Finally, if you attempt to  load       is  likely to cause pcretest to crash.  Finally, if you attempt to load
        a file that is not in the correct format, the result is undefined.         a file that is not in the correct format, the result is undefined.
   
   
 SEE ALSO  SEE ALSO
   
       pcre(3), pcreapi(3)pcrecallout(3)pcrejit, pcrematching(3), pcrepar-       pcre(3), pcre16(3),  pcreapi(3),  pcrecallout(3),  pcrejit,  pcrematch-
       tial(d), pcrepattern(3), pcreprecompile(3).       ing(3), pcrepartial(d), pcrepattern(3), pcreprecompile(3).
   
   
 AUTHOR  AUTHOR
Line 810  AUTHOR Line 899  AUTHOR
   
 REVISION  REVISION
   
       Last updated: 02 December 2011       Last updated: 21 February 2012
       Copyright (c) 1997-2011 University of Cambridge.       Copyright (c) 1997-2012 University of Cambridge.

Removed from v.1.1  
changed lines
  Added in v.1.1.1.3


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