Buffer overrun fix. fixes: bug #787

[users/jgh/exim.git] / doc / doc-txt / pcretest.txt

diff --git a/doc/doc-txt/pcretest.txt b/doc/doc-txt/pcretest.txt
index dfa03b80bef6e0eb5e769f3cee0d08eaaacf7cb3..d93ec26d1d5c8b76ec73383217277173132d26b0 100644 (file)
--- a/doc/doc-txt/pcretest.txt
+++ b/doc/doc-txt/pcretest.txt
@@ -24,18 +24,24 @@ SYNOPSIS
 
 OPTIONS
 
 
 OPTIONS
 

+       -b        Behave as if each regex has the /B (show bytecode)  modifier;
+                 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.
 

-       -d        Behave as if each regex has  the  /D  (debug)  modifier;  the
-                 internal form is output after compilation.
+       -d        Behave  as  if  each  regex  has the /D (debug) modifier; the
+                 internal form and information about the compiled  pattern  is
+                 output after compilation; -d is equivalent to -b -i.

 
        -dfa      Behave  as if each data line contains the \D escape sequence;
                  this    causes    the    alternative    matching    function,
                  pcre_dfa_exec(),   to   be   used  instead  of  the  standard
                  pcre_exec() function (more detail is given below).
 
 
        -dfa      Behave  as if each data line contains the \D escape sequence;
                  this    causes    the    alternative    matching    function,
                  pcre_dfa_exec(),   to   be   used  instead  of  the  standard
                  pcre_exec() function (more detail is given below).
 

+       -help     Output a brief summary these options and then exit.
+

        -i        Behave as if each regex  has  the  /I  modifier;  information
                  about the compiled pattern is given after compilation.
 
        -i        Behave as if each regex  has  the  /I  modifier;  information
                  about the compiled pattern is given after compilation.
 


@@ -45,10 +51,12 @@ OPTIONS
                  pcretest, -s is a synonym for -m.
 
        -o osize  Set the number of elements in the output vector that is  used
                  pcretest, -s is a synonym for -m.
 
        -o osize  Set the number of elements in the output vector that is  used

-                 when  calling  pcre_exec()  to be osize. The default value is
-                 45, which is enough for 14 capturing subexpressions. The vec-
-                 tor  size  can  be  changed  for individual matching calls by
-                 including \O in the data line (see below).
+                 when  calling pcre_exec() or pcre_dfa_exec() to be osize. The
+                 default value is 45, which is enough for 14 capturing  subex-
+                 pressions   for  pcre_exec()  or  22  different  matches  for
+                 pcre_dfa_exec(). The vector size can be changed for  individ-
+                 ual  matching  calls  by  including  \O in the data line (see
+                 below).

 
        -p        Behave as if each regex has the /P modifier; the POSIX  wrap-
                  per  API  is used to call PCRE. None of the other options has
 
        -p        Behave as if each regex has the /P modifier; the POSIX  wrap-
                  per  API  is used to call PCRE. None of the other options has


@@ -64,7 +72,13 @@ OPTIONS
                  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-
                  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.
+                 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-
+                 ate 1000 times. The default is to iterate 500000 times.
+
+       -tm       This is like -t except that it times only the matching phase,
+                 not the compile or study phases.

 
 
 DESCRIPTION
 
 
 DESCRIPTION


@@ -82,53 +96,54 @@ DESCRIPTION
 
        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
 
        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

-       \r\n,  depending  on  the newline setting) in a single line of input to
-       encode the newline characters. There is no limit on the length of  data
-       lines; the input buffer is automatically extended if it is too small.
+       \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
+       data  lines;  the  input  buffer is automatically extended if it is too
+       small.

 
 

-       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
+       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

        in any non-alphanumeric delimiters other than backslash, for example:
 
          /(a|bc)x+yz/
 
        in any non-alphanumeric delimiters other than backslash, for example:
 
          /(a|bc)x+yz/
 

-       White  space before the initial delimiter is ignored. A regular expres-
-       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
+       White space before the initial delimiter is ignored. A regular  expres-
+       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

        delimiter within the pattern by escaping it, for example
 
          /abc\/def/
 
        delimiter within the pattern by escaping it, for example
 
          /abc\/def/
 

-       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
-       its interpretation.  If the terminating delimiter is  immediately  fol-
+       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
+       its  interpretation.   If the terminating delimiter is immediately fol-

        lowed by a backslash, for example,
 
          /abc/\
 
        lowed by a backslash, for example,
 
          /abc/\
 

-       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
+       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

        finishes with a backslash, because
 
          /abc\/
 
        finishes with a backslash, because
 
          /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 with  "abc/",

        causing pcretest to read the next line as a continuation of the regular
        expression.
 
 
 PATTERN MODIFIERS
 
        causing pcretest to read the next line as a continuation of the regular
        expression.
 
 
 PATTERN MODIFIERS
 

-       A  pattern may be followed by any number of modifiers, which are mostly
-       single characters. Following Perl usage, these are  referred  to  below
-       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
-       modifiers.  Whitespace  may  appear between the final pattern delimiter
+       A pattern may be followed by any number of modifiers, which are  mostly
+       single  characters.  Following  Perl usage, these are referred to below
+       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
+       modifiers. Whitespace may appear between the  final  pattern  delimiter

        and the first modifier, and between the modifiers themselves.
 
        The /i, /m, /s, and /x modifiers set the PCRE_CASELESS, PCRE_MULTILINE,
        and the first modifier, and between the modifiers themselves.
 
        The /i, /m, /s, and /x modifiers set the PCRE_CASELESS, PCRE_MULTILINE,

-       PCRE_DOTALL,  or  PCRE_EXTENDED  options,  respectively, when pcre_com-
-       pile() is called. These four modifier letters have the same  effect  as
+       PCRE_DOTALL, or PCRE_EXTENDED  options,  respectively,  when  pcre_com-
+       pile()  is  called. These four modifier letters have the same effect as

        they do in Perl. For example:
 
          /caseless/i
        they do in Perl. For example:
 
          /caseless/i


@@ -136,21 +151,28 @@ PATTERN MODIFIERS
        The following table shows additional modifiers for setting PCRE options
        that do not correspond to anything in Perl:
 
        The following table shows additional modifiers for setting PCRE options
        that do not correspond to anything in Perl:
 

-         /A       PCRE_ANCHORED
-         /C       PCRE_AUTO_CALLOUT
-         /E       PCRE_DOLLAR_ENDONLY
-         /f       PCRE_FIRSTLINE
-         /J       PCRE_DUPNAMES
-         /N       PCRE_NO_AUTO_CAPTURE
-         /U       PCRE_UNGREEDY
-         /X       PCRE_EXTRA
-         /<cr>    PCRE_NEWLINE_CR
-         /<lf>    PCRE_NEWLINE_LF
-         /<crlf>  PCRE_NEWLINE_CRLF
-
-       Those specifying line endings are literal strings as shown. Details  of
-       the  meanings of these PCRE options are given in the pcreapi documenta-
-       tion.
+         /A          PCRE_ANCHORED
+         /C          PCRE_AUTO_CALLOUT
+         /E          PCRE_DOLLAR_ENDONLY
+         /f          PCRE_FIRSTLINE
+         /J          PCRE_DUPNAMES
+         /N          PCRE_NO_AUTO_CAPTURE
+         /U          PCRE_UNGREEDY
+         /X          PCRE_EXTRA
+         /<cr>       PCRE_NEWLINE_CR
+         /<lf>       PCRE_NEWLINE_LF
+         /<crlf>     PCRE_NEWLINE_CRLF
+         /<anycrlf>  PCRE_NEWLINE_ANYCRLF
+         /<any>      PCRE_NEWLINE_ANY
+
+       Those  specifying  line ending sequencess are literal strings as shown.
+       This example sets multiline matching  with  CRLF  as  the  line  ending
+       sequence:
+
+         /^abc/m<crlf>
+
+       Details  of the meanings of these PCRE options are given in the pcreapi
+       documentation.

 
    Finding all matches in a string
 
 
    Finding all matches in a string
 


@@ -180,79 +202,84 @@ PATTERN MODIFIERS
        remainder of the subject string. This is useful  for  tests  where  the
        subject contains multiple copies of the same substring.
 
        remainder of the subject string. This is useful  for  tests  where  the
        subject contains multiple copies of the same substring.
 

-       The  /L modifier must be followed directly by the name of a locale, for
+       The  /B modifier is a debugging feature. It requests that pcretest out-
+       put a representation of the compiled byte code after compilation.  Nor-
+       mally  this  information contains length and offset values; however, if
+       /Z is also present, this data is replaced by spaces. This is a  special
+       feature for use in the automatic test scripts; it ensures that the same
+       output is generated for different internal link sizes.
+
+       The /L modifier must be followed directly by the name of a locale,  for

        example,
 
          /pattern/Lfr_FR
 
        For this reason, it must be the last modifier. The given locale is set,
        example,
 
          /pattern/Lfr_FR
 
        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
-       locale, and this is then passed to pcre_compile()  when  compiling  the
-       regular  expression.  Without  an  /L  modifier,  NULL is passed as the
-       tables pointer; that is, /L applies only to the expression on which  it
+       pcre_maketables() is called to build a set of character tables for  the
+       locale,  and  this  is then passed to pcre_compile() when compiling the
+       regular expression. Without an /L  modifier,  NULL  is  passed  as  the
+       tables  pointer; that is, /L applies only to the expression on which it

        appears.
 
        appears.
 

-       The  /I  modifier  requests  that pcretest output information about the
-       compiled pattern (whether it is anchored, has a fixed first  character,
-       and  so  on). It does this by calling pcre_fullinfo() after compiling a
-       pattern. If the pattern is studied, the results of that are  also  out-
+       The /I modifier requests that pcretest  output  information  about  the
+       compiled  pattern (whether it is anchored, has a fixed first character,
+       and so on). It does this by calling pcre_fullinfo() after  compiling  a
+       pattern.  If  the pattern is studied, the results of that are also out-

        put.
 
        put.
 

-       The /D modifier is a PCRE debugging feature, which also assumes /I.  It
-       causes the internal form of compiled regular expressions to  be  output
-       after compilation. If the pattern was studied, the information returned
-       is also output.
+       The /D modifier is a PCRE debugging feature, and is equivalent to  /BI,
+       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 fields in

-       the  compiled  pattern  that  contain  2-byte  and 4-byte numbers. This
-       facility is for testing the feature in PCRE that allows it  to  execute
+       the compiled pattern that  contain  2-byte  and  4-byte  numbers.  This
+       facility  is  for testing the feature in PCRE that allows it to execute

        patterns that were compiled on a host with a different endianness. This
        patterns that were compiled on a host with a different endianness. This

-       feature is not available when the POSIX  interface  to  PCRE  is  being
-       used,  that is, when the /P pattern modifier is specified. See also the
+       feature  is  not  available  when  the POSIX interface to PCRE is being
+       used, that is, when the /P pattern modifier is specified. See also  the

        section about saving and reloading compiled patterns below.
 
        section about saving and reloading compiled patterns below.
 

-       The /S modifier causes pcre_study() to be called after  the  expression
+       The  /S  modifier causes pcre_study() to be called after the expression

        has been compiled, and the results used when the expression is matched.
 
        has been compiled, and the results used when the expression is matched.
 

-       The /M modifier causes the size of memory block used to hold  the  com-
+       The  /M  modifier causes the size of memory block used to hold the com-

        piled pattern to be output.
 
        piled pattern to be output.
 

-       The  /P modifier causes pcretest to call PCRE via the POSIX wrapper API
-       rather than its native API. When this  is  done,  all  other  modifiers
-       except  /i,  /m, and /+ are ignored. REG_ICASE is set if /i is present,
-       and REG_NEWLINE is set if /m is present. The  wrapper  functions  force
-       PCRE_DOLLAR_ENDONLY  always, and PCRE_DOTALL unless REG_NEWLINE is set.
+       The /P modifier causes pcretest to call PCRE via the POSIX wrapper  API
+       rather  than  its  native  API.  When this is done, all other modifiers
+       except /i, /m, and /+ are ignored. REG_ICASE is set if /i  is  present,
+       and  REG_NEWLINE  is  set if /m is present. The wrapper functions force
+       PCRE_DOLLAR_ENDONLY always, and PCRE_DOTALL unless REG_NEWLINE is  set.

 
 

-       The /8 modifier causes pcretest to call PCRE with the PCRE_UTF8  option
-       set.  This  turns on support for UTF-8 character handling in PCRE, pro-
-       vided that it was compiled with this  support  enabled.  This  modifier
+       The  /8 modifier causes pcretest to call PCRE with the PCRE_UTF8 option
+       set. This turns on support for UTF-8 character handling in  PCRE,  pro-
+       vided  that  it  was  compiled with this support enabled. This modifier

        also causes any non-printing characters in output strings to be printed
        using the \x{hh...} notation if they are valid UTF-8 sequences.
 
        also causes any non-printing characters in output strings to be printed
        using the \x{hh...} notation if they are valid UTF-8 sequences.
 

-       If the /? modifier  is  used  with  /8,  it  causes  pcretest  to  call
-       pcre_compile()  with  the  PCRE_NO_UTF8_CHECK  option,  to suppress the
+       If  the  /?  modifier  is  used  with  /8,  it  causes pcretest to call
+       pcre_compile() with the  PCRE_NO_UTF8_CHECK  option,  to  suppress  the

        checking of the string for UTF-8 validity.
 
 
 DATA LINES
 
        checking of the string for UTF-8 validity.
 
 
 DATA LINES
 

-       Before each data line is passed to pcre_exec(),  leading  and  trailing
-       whitespace  is  removed,  and it is then scanned for \ escapes. Some of
-       these are pretty esoteric features, intended for checking out  some  of
-       the  more  complicated features of PCRE. If you are just testing "ordi-
-       nary" regular expressions, you probably don't need any  of  these.  The
+       Before  each  data  line is passed to pcre_exec(), leading and trailing
+       whitespace is removed, and it is then scanned for \  escapes.  Some  of
+       these  are  pretty esoteric features, intended for checking out some of
+       the more complicated features of PCRE. If you are just  testing  "ordi-
+       nary"  regular  expressions,  you probably don't need any of these. The

        following escapes are recognized:
 
        following escapes are recognized:
 

-         \a         alarm (= BEL)
-         \b         backspace
-         \e         escape
-         \f         formfeed
-         \n         newline
+         \a         alarm (BEL, \x07)
+         \b         backspace (\x08)
+         \e         escape (\x27)
+         \f         formfeed (\x0c)
+         \n         newline (\x0a)

          \qdd       set the PCRE_MATCH_LIMIT limit to dd
                       (any number of digits)
          \qdd       set the PCRE_MATCH_LIMIT limit to dd
                       (any number of digits)

-         \r         carriage return
-         \t         tab
-         \v         vertical tab
+         \r         carriage return (\x0d)
+         \t         tab (\x09)
+         \v         vertical tab (\x0b)

          \nnn       octal character (up to 3 octal digits)
          \xhh       hexadecimal character (up to 2 hex digits)
          \x{hh...}  hexadecimal character, any number of digits
          \nnn       octal character (up to 3 octal digits)
          \xhh       hexadecimal character (up to 2 hex digits)
          \x{hh...}  hexadecimal character, any number of digits


@@ -309,12 +336,19 @@ DATA LINES
                       or pcre_dfa_exec()
          \<crlf>    pass the PCRE_NEWLINE_CRLF option to pcre_exec()
                       or pcre_dfa_exec()
                       or pcre_dfa_exec()
          \<crlf>    pass the PCRE_NEWLINE_CRLF option to pcre_exec()
                       or pcre_dfa_exec()

+         \<anycrlf> pass the PCRE_NEWLINE_ANYCRLF option to pcre_exec()
+                      or pcre_dfa_exec()
+         \<any>     pass the PCRE_NEWLINE_ANY option to pcre_exec()
+                      or pcre_dfa_exec()

 
 

-       The  escapes  that specify line endings are literal strings, exactly as
-       shown.  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 way of passing an empty line as data, since a real  empty  line
-       terminates the data input.
+       The escapes that specify line ending  sequences  are  literal  strings,
+       exactly as shown. No more than one newline setting should be present in
+       any data line.
+
+       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
+       way of passing an empty line as data, since a real  empty  line  termi-
+       nates the data input.

 
        If  \M  is present, pcretest calls pcre_exec() several times, with dif-
        ferent values in the match_limit and  match_limit_recursion  fields  of
 
        If  \M  is present, pcretest calls pcre_exec() several times, with dif-
        ferent values in the match_limit and  match_limit_recursion  fields  of


@@ -371,7 +405,7 @@ DEFAULT OUTPUT FROM PCRETEST
        is an example of an interactive pcretest run.
 
          $ pcretest
        is an example of an interactive pcretest run.
 
          $ pcretest

-         PCRE version 5.00 07-Sep-2004
+         PCRE version 7.0 30-Nov-2006

 
            re> /^abc(\d+)/
          data> abc123
 
            re> /^abc(\d+)/
          data> abc123


@@ -382,16 +416,17 @@ DEFAULT OUTPUT FROM PCRETEST
 
        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
 
        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

-       the pattern. If the pattern has the /+ modifier, the  output  for  sub-
-       string  0 is followed by the the rest of the subject string, identified
-       by "0+" like this:
+       the pattern. See below for the definition of  non-printing  characters.
+       If  the pattern has the /+ modifier, the output for substring 0 is fol-
+       lowed by the the rest of the subject string, identified  by  "0+"  like
+       this:

 
            re> /cat/+
          data> cataract
           0: cat
           0+ aract
 
 
            re> /cat/+
          data> cataract
           0: cat
           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:
 
            re> /\Bi(\w\w)/g
        matching attempts are output in sequence, like this:
 
            re> /\Bi(\w\w)/g


@@ -405,24 +440,24 @@ DEFAULT OUTPUT FROM PCRETEST
 
        "No match" is output only if the first match attempt fails.
 
 
        "No match" is output only if the first match attempt fails.
 

-       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
+       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

        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
        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

-       (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 while 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 or  \r\n
-       for those newline settings).
+       lines  can  be included in data by means of the \n escape (or \r, \r\n,
+       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
-       means of the \D escape sequence or the -dfa command line  option),  the
-       output  consists  of  a list of all the matches that start at the first
+       When the alternative matching function, pcre_dfa_exec(),  is  used  (by
+       means  of  the \D escape sequence or the -dfa command line option), the
+       output consists of a list of all the matches that start  at  the  first

        point in the subject where there is at least one match. For example:
 
            re> /(tang|tangerine|tan)/
        point in the subject where there is at least one match. For example:
 
            re> /(tang|tangerine|tan)/


@@ -431,11 +466,11 @@ OUTPUT FROM THE ALTERNATIVE MATCHING FUNCTION
           1: tang
           2: tan
 
           1: tang
           2: tan
 

-       (Using the normal matching function on this data  finds  only  "tang".)
-       The  longest matching string is always given first (and numbered zero).
+       (Using  the  normal  matching function on this data finds only "tang".)
+       The longest matching string is always given first (and numbered  zero).

 
 

-       If /gP is present on  the  pattern,  the  search  for  further  matches
-       resumes at the end of the longest match. For example:
+       If /g is present on the pattern, the search for further matches resumes
+       at the end of the longest match. For example:

 
            re> /(tang|tangerine|tan)/g
          data> yellow tangerine and tangy sultana\D
 
            re> /(tang|tangerine|tan)/g
          data> yellow tangerine and tangy sultana\D


@@ -446,48 +481,48 @@ OUTPUT FROM THE ALTERNATIVE MATCHING FUNCTION
           1: tan
           0: tan
 
           1: tan
           0: tan
 

-       Since  the  matching  function  does not support substring capture, the
-       escape sequences that are concerned with captured  substrings  are  not
+       Since the matching function does not  support  substring  capture,  the
+       escape  sequences  that  are concerned with captured substrings are not

        relevant.
 
 
 RESTARTING AFTER A PARTIAL MATCH
 
        When the alternative matching function has given the PCRE_ERROR_PARTIAL
        relevant.
 
 
 RESTARTING AFTER A PARTIAL MATCH
 
        When the alternative matching function has given the PCRE_ERROR_PARTIAL

-       return, indicating that the subject partially matched the pattern,  you
-       can  restart  the match with additional subject data by means of the \R
+       return,  indicating that the subject partially matched the pattern, you
+       can restart the match with additional subject data by means of  the  \R

        escape sequence. For example:
 
        escape sequence. For example:
 

-           re> /^?(jan|feb|mar|apr|may|jun|jul|aug|sep|oct|nov|dec)$/
+           re> /^\d?\d(jan|feb|mar|apr|may|jun|jul|aug|sep|oct|nov|dec)\d\d$/

          data> 23ja\P\D
          Partial match: 23ja
          data> n05\R\D
           0: n05
 
          data> 23ja\P\D
          Partial match: 23ja
          data> n05\R\D
           0: n05
 

-       For further information about partial  matching,  see  the  pcrepartial
+       For  further  information  about  partial matching, see the pcrepartial

        documentation.
 
 
 CALLOUTS
 
        documentation.
 
 
 CALLOUTS
 

-       If  the pattern contains any callout requests, pcretest's callout func-
-       tion is called during matching. This works  with  both  matching  func-
+       If the pattern contains any callout requests, pcretest's callout  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
 
          --->pqrabcdef
            0    ^  ^     \d
 
        next pattern item to be tested. For example, the output
 
          --->pqrabcdef
            0    ^  ^     \d
 

-       indicates  that  callout number 0 occurred for a match attempt starting
-       at the fourth character of the subject string, when the pointer was  at
-       the  seventh  character of the data, and when the next pattern item was
-       \d. Just one circumflex is output if the start  and  current  positions
+       indicates that callout number 0 occurred for a match  attempt  starting
+       at  the fourth character of the subject string, when the pointer was at
+       the seventh character of the data, and when the next pattern  item  was
+       \d.  Just  one  circumflex is output if the start and current positions

        are the same.
 
        Callouts numbered 255 are assumed to be automatic callouts, inserted as
        are the same.
 
        Callouts numbered 255 are assumed to be automatic callouts, inserted as

-       a result of the /C pattern modifier. In this case, instead  of  showing
-       the  callout  number, the offset in the pattern, preceded by a plus, is
+       a  result  of the /C pattern modifier. In this case, instead of showing
+       the callout number, the offset in the pattern, preceded by a  plus,  is

        output. For example:
 
            re> /\d?[A-E]\*/C
        output. For example:
 
            re> /\d?[A-E]\*/C


@@ -499,76 +534,97 @@ CALLOUTS
          +10 ^ ^
           0: E*
 
          +10 ^ ^
           0: E*
 

-       The callout function in pcretest returns zero (carry  on  matching)  by
-       default,  but you can use a \C item in a data line (as described above)
+       The  callout  function  in pcretest returns zero (carry on matching) by
+       default, but you can use a \C item in a data line (as described  above)

        to change this.
 
        to change this.
 

-       Inserting callouts can be helpful when using pcretest to check  compli-
-       cated  regular expressions. For further information about callouts, see
+       Inserting  callouts can be helpful when using pcretest to check compli-
+       cated regular expressions. For further information about callouts,  see

        the pcrecallout documentation.
 
 
        the pcrecallout documentation.
 
 

+NON-PRINTING CHARACTERS
+
+       When  pcretest is outputting text in the compiled version of a pattern,
+       bytes other than 32-126 are always treated as  non-printing  characters
+       are are therefore shown as hex escapes.
+
+       When  pcretest  is  outputting text that is a matched part of a subject
+       string, it behaves in the same way, unless a different locale has  been
+       set  for  the  pattern  (using  the  /L  modifier).  In  this case, the
+       isprint() function to distinguish printing and non-printing characters.
+
+

 SAVING AND RELOADING COMPILED PATTERNS
 
 SAVING AND RELOADING COMPILED PATTERNS
 

-       The facilities described in this section are  not  available  when  the
+       The  facilities  described  in  this section are not available when the

        POSIX inteface to PCRE is being used, that is, when the /P pattern mod-
        ifier is specified.
 
        When the POSIX interface is not in use, you can cause pcretest to write
        POSIX inteface to PCRE is being used, that is, when the /P pattern mod-
        ifier is specified.
 
        When the POSIX interface is not in use, you can cause pcretest to write

-       a  compiled  pattern to a file, by following the modifiers with > and a
+       a compiled pattern to a file, by following the modifiers with >  and  a

        file name.  For example:
 
          /pattern/im >/some/file
 
        file name.  For example:
 
          /pattern/im >/some/file
 

-       See the pcreprecompile documentation for a discussion about saving  and
+       See  the pcreprecompile documentation for a discussion about saving and

        re-using compiled patterns.
 
        re-using compiled patterns.
 

-       The  data  that  is  written  is  binary. The first eight bytes are the
-       length of the compiled pattern data  followed  by  the  length  of  the
-       optional  study  data,  each  written as four bytes in big-endian order
-       (most significant byte first). If there is no study  data  (either  the
+       The data that is written is binary.  The  first  eight  bytes  are  the
+       length  of  the  compiled  pattern  data  followed by the length of the
+       optional study data, each written as four  bytes  in  big-endian  order
+       (most  significant  byte  first). If there is no study data (either the

        pattern was not studied, or studying did not return any data), the sec-
        pattern was not studied, or studying did not return any data), the sec-

-       ond length is zero. The lengths are followed by an exact  copy  of  the
+       ond  length  is  zero. The lengths are followed by an exact copy of the

        compiled pattern. If there is additional study data, this follows imme-
        compiled pattern. If there is additional study data, this follows imme-

-       diately after the compiled pattern. After writing  the  file,  pcretest
+       diately  after  the  compiled pattern. After writing the file, pcretest

        expects to read a new pattern.
 
        A saved pattern can be reloaded into pcretest by specifing < and a file
        expects to read a new pattern.
 
        A saved pattern can be reloaded into pcretest by specifing < and a file

-       name instead of a pattern. The name of the file must not  contain  a  <
-       character,  as  otherwise pcretest will interpret the line as a pattern
+       name  instead  of  a pattern. The name of the file must not contain a <
+       character, as otherwise pcretest will interpret the line as  a  pattern

        delimited by < characters.  For example:
 
           re> </some/file
          Compiled regex loaded from /some/file
          No study data
 
        delimited by < characters.  For example:
 
           re> </some/file
          Compiled regex loaded from /some/file
          No study data
 

-       When the pattern has been loaded, pcretest proceeds to read data  lines
+       When  the pattern has been loaded, pcretest proceeds to read data lines

        in the usual way.
 
        in the usual way.
 

-       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
-       which  the pattern was compiled. For example, you can compile on an i86
+       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
+       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.
 

-       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
+       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-
-       ing  and experimentation. It is not intended for production use because
-       only a single pattern can be written to a file. Furthermore,  there  is
-       no  facility  for  supplying  custom  character  tables  for use with a
-       reloaded pattern. If the original  pattern  was  compiled  with  custom
-       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
+       The  ability to save and reload files in pcretest is intended for test-
+       ing and experimentation. It is not intended for production use  because
+       only  a  single pattern can be written to a file. Furthermore, there is
+       no facility for supplying  custom  character  tables  for  use  with  a
+       reloaded  pattern.  If  the  original  pattern was compiled with custom
+       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

        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
+
+       pcre(3), pcreapi(3), pcrecallout(3),  pcrematching(3),  pcrepartial(d),
+       pcrepattern(3), pcreprecompile(3).
+
+

 AUTHOR
 
        Philip Hazel
 AUTHOR
 
        Philip Hazel

-       University Computing Service,
-       Cambridge CB2 3QG, England.
+       University Computing Service
+       Cambridge CB2 3QH, England.
+
+
+REVISION

 
 

-Last updated: 29 June 2006
-Copyright (c) 1997-2006 University of Cambridge.
+       Last updated: 24 April 2007
+       Copyright (c) 1997-2007 University of Cambridge.