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8.231. utf8
While
Perl's implementation of Unicode support is
incomplete, the use utf8 pragma tells the Perl
parser to allow UTF-8 in the program text in its current lexical
scope. no utf8 tells Perl to switch back to
treating text as literal bytes in the current lexical scope.
You'll probably use use utf8 only
for compatibility, since future versions of Perl will standardize on
the UTF-8 encoding for source text.
use utf8 has the following effects: bytes with
their high-bit set (identifiers, string constants, constant regular
expressions, package names) will be treated as literal UTF-8
characters and regular expressions within the scope of the
utf8 pragma and will default to using character
semantics instead of byte semantics. For example:
@bytes_or_chars = split //, $data; # May split to bytes if data
# $data isn't UTF-8
{
use utf8; # Forces char semantics
@chars = split //, $data; # Splits characters
}
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| 8.230. User::pwent |  | 8.232. vars |
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