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Интерактивная система просмотра системных руководств (man-ов)

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utf8 (3)
  • >> utf8 (3) ( Solaris man: Библиотечные вызовы )
  • utf8 (3) ( Linux man: Библиотечные вызовы )
  • utf8 (5) ( FreeBSD man: Форматы файлов )
  • utf8 (7) ( Русские man: Макропакеты и соглашения )
  • utf8 (7) ( Linux man: Макропакеты и соглашения )
  • Ключ utf8 обнаружен в базе ключевых слов.
  • 
    
    

    NAME

         utf8 - Perl pragma to enable/disable UTF-8 in source code
    
    
    

    SYNOPSIS

             use utf8;
             no utf8;
    
    
    
    

    DESCRIPTION

         WARNING: The implementation of Unicode support in Perl is
         incomplete.  See the perlunicode manpage for the exact
         details.
    
         The `use utf8' pragma tells the Perl parser to allow UTF-8
         in the program text in the current lexical scope.  The `no
         utf8' pragma tells Perl to switch back to treating the
         source text as literal bytes in the current lexical scope.
    
         This pragma is primarily a compatibility device.  Perl
         versions earlier than 5.6 allowed arbitrary bytes in source
         code, whereas in future we would like to standardize on the
         UTF-8 encoding for source text.  Until UTF-8 becomes the
         default format for source text, this pragma should be used
         to recognize UTF-8 in the source.  When UTF-8 becomes the
         standard source format, this pragma will effectively become
         a no-op.
    
         Enabling the `utf8' pragma has the following effects:
    
         o   Bytes in the source text that have their high-bit set
             will be treated as being part of a literal UTF-8
             character.  This includes most literals such as
             identifiers, string constants, constant regular
             expression patterns and package names.
    
         o   In the absence of inputs marked as UTF-8, regular
             expressions within the scope of this pragma will default
             to using character semantics instead of byte semantics.
    
                 @bytes_or_chars = split //, $data;  # may split to bytes if data
                                                     # $data isn't UTF-8
                 {
                     use utf8;                       # force char semantics
                     @chars = split //, $data;       # splits characters
                 }
    
    
    
    

    SEE ALSO

         the perlunicode manpage, the bytes manpage
    
    
    
    


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