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| author | Jarkko Hietaniemi <jhi@iki.fi> | 1999-09-08 09:02:37 +0000 |
|---|---|---|
| committer | Jarkko Hietaniemi <jhi@iki.fi> | 1999-09-08 09:02:37 +0000 |
| commit | 26b44a0af0ea323b1f08d11d9890b96d19caeab9 (patch) | |
| tree | cb07a056e98b02d04c6db01cd78ea6a12272a054 /pod/perlre.pod | |
| parent | 04ebc1ab60c65d1a243926252d72cc1475abc433 (diff) | |
| download | perl-26b44a0af0ea323b1f08d11d9890b96d19caeab9.tar.gz | |
Minor touches at the [:class:] description.
p4raw-id: //depot/cfgperl@4105
Diffstat (limited to 'pod/perlre.pod')
| -rw-r--r-- | pod/perlre.pod | 18 |
1 files changed, 9 insertions, 9 deletions
diff --git a/pod/perlre.pod b/pod/perlre.pod index 76f345de35..468bf9f820 100644 --- a/pod/perlre.pod +++ b/pod/perlre.pod @@ -192,8 +192,8 @@ The POSIX character class syntax [:class:] -is also available. The available classes and their \-equivalents -(if any) are as follows: +is also available. The available classes and their backslash +equivalents (if available) are as follows: alpha alnum @@ -209,15 +209,15 @@ is also available. The available classes and their \-equivalents word \w xdigit -Note that the [] are part of the [::] construct, not part of the whole +For example use C<[:upper:]> to match all the uppercase characters. +Note that the C<[]> are part of the C<[::]> construct, not part of the whole character class. For example: [01[:alpha:]%] matches one, zero, any alphabetic character, and the percentage sign. -The exact meanings of the above classes depend from many things: -if the C<utf8> pragma is used, the following equivalences to Unicode +If the C<utf8> pragma is used, the following equivalences to Unicode \p{} constructs hold: alpha IsAlpha @@ -234,11 +234,11 @@ if the C<utf8> pragma is used, the following equivalences to Unicode word IsWord xdigit IsXDigit -For example, [:lower:] and \p{IsLower} are equivalent. +For example C<[:lower:]> and C<\p{IsLower}> are equivalent. If the C<utf8> pragma is not used but the C<locale> pragma is, the classes correlate with the isalpha(3) interface (except for `word', -which is a Perl extension, mirroring \w). +which is a Perl extension, mirroring C<\w>). The assumedly non-obviously named classes are: @@ -283,8 +283,8 @@ with a '^'. This is a Perl extension. For example: [:^space:] \S \P{IsSpace} [:^word:] \W \P{IsWord} -The POSIX character classes [.cc.] and [=cc=] are B<not> supported -and trying to use them will cause an error. +The POSIX character classes [.cc.] and [=cc=] are recognized but +B<not> supported and trying to use them will cause an error. Perl defines the following zero-width assertions: |