for some background, perlre (5.008) states:

    The following equivalences to Unicode \p{} constructs and equivale
+nt
    backslash character classes (if available), will hold:

        [:...:]     \p{...}         backslash

        alpha       IsAlpha
        alnum       IsAlnum
        ascii       IsASCII
        blank       IsSpace
        cntrl       IsCntrl
        digit       IsDigit        \d
        graph       IsGraph
        lower       IsLower
        print       IsPrint
        punct       IsPunct
        space       IsSpace
                    IsSpacePerl    \s
        upper       IsUpper
        word        IsWord
        xdigit      IsXDigit

    <em>For example "[:lower:]" and "\p{IsLower}" are equivalent.</em>

[download]

if your results match mine,

#!/usr/bin/perl
use strict;
use warnings;
$|++;

my %classes= qw/
  alpha IsAlpha
  alnum IsAlnum
  ascii IsASCII
  blank IsBlank
  cntrl IsCntrl
  digit IsDigit
  graph IsGraph
  lower IsLower
  print IsPrint
  punct IsPunct
  space IsSpace
  upper IsUpper
  word IsWord
  xdigit IsXDigit
/;

for( keys %classes )
{
  my( $r_posix, $r_unicode )= ( qr/[[:$_:]]/, qr/\p{$classes{$_}}/ );
  print "testing $r_posix and $r_unicode$/";
  for my $x (0x00..0x7e)
  {
    local $_= chr $x;
    printf "0x%x (%3d.) differ$/" => $x, $x 
      if /$r_posix/ xor /$r_unicode/;
  }
}
__END__
testing (?-xism:[[:digit:]]) and (?-xism:\p{IsDigit})
testing (?-xism:[[:upper:]]) and (?-xism:\p{IsUpper})
testing (?-xism:[[:xdigit:]]) and (?-xism:\p{IsXDigit})
testing (?-xism:[[:cntrl:]]) and (?-xism:\p{IsCntrl})
testing (?-xism:[[:alnum:]]) and (?-xism:\p{IsAlnum})
testing (?-xism:[[:space:]]) and (?-xism:\p{IsSpace})
testing (?-xism:[[:print:]]) and (?-xism:\p{IsPrint})
testing (?-xism:[[:ascii:]]) and (?-xism:\p{IsASCII})
testing (?-xism:[[:word:]]) and (?-xism:\p{IsWord})
testing (?-xism:[[:alpha:]]) and (?-xism:\p{IsAlpha})
testing (?-xism:[[:punct:]]) and (?-xism:\p{IsPunct})
0x24 ( 36.) differ
0x2b ( 43.) differ
0x3c ( 60.) differ
0x3d ( 61.) differ
0x3e ( 62.) differ
0x5e ( 94.) differ
0x60 ( 96.) differ
0x7c (124.) differ
0x7e (126.) differ
testing (?-xism:[[:lower:]]) and (?-xism:\p{IsLower})
testing (?-xism:[[:blank:]]) and (?-xism:\p{IsBlank})
testing (?-xism:[[:graph:]]) and (?-xism:\p{IsGraph})

[download]

then i'd list this as a bug, and contact p5p. it seems only [[:punct:]] and \p{IsPunct} differ. this is not expected behavior.

~Particle *accelerates*

In reply to Re: [[:punct:]] vs. {IsPunct} in 5.8 by particle
in thread :punct: vs. {IsPunct} in 5.8 by graff

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post, it's "PerlMonks-approved HTML":


  • Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
  • Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
  • Read Where should I post X? if you're not absolutely sure you're posting in the right place.
  • Please read these before you post! —
  • Posts may use any of the Perl Monks Approved HTML tags:
    a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
            For:     Use:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
  • See Writeup Formatting Tips and other pages linked from there for more info.