3 $^U = 1 if caller and caller eq 'main'; # they are unicode aware
8 $enc{caller()} = $_[1] if $_[1];
16 require "utf8_heavy.pl";
25 utf8 - Perl pragma to enable/disable UTF-8 in source code
34 WARNING: The implementation of Unicode support in Perl is incomplete.
35 Expect sudden and unannounced changes!
37 The C<use utf8> pragma tells the Perl parser to allow UTF-8 in the
38 program text in the current lexical scope. The C<no utf8> pragma
39 tells Perl to switch back to treating the source text as literal
40 bytes in the current lexical scope.
42 This pragma is primarily a compatibility device. Perl versions
43 earlier than 5.6 allowed arbitrary bytes in source code, whereas
44 in future we would like to standardize on the UTF-8 encoding for
45 source text. Until UTF-8 becomes the default format for source
46 text, this pragma should be used to recognize UTF-8 in the source.
47 When UTF-8 becomes the standard source format, this pragma will
48 effectively become a no-op.
50 Enabling the C<utf8> pragma has the following effects:
56 Bytes in the source text that have their high-bit set will be treated
57 as being part of a literal UTF-8 character. This includes most literals
58 such as identifiers, string constants, constant regular expression patterns
63 As a side effect, when this pragma is used within the main package,
64 it also enables Unicode character semantics for the entire program.
65 See L<perlunicode> for more on that.
67 [XXX: split this out into separate "pragma" and/or -C command-line
72 In the absence of inputs marked as UTF-8, regular expressions within the
73 scope of this pragma will default to using character semantics instead
76 @bytes_or_chars = split //, $data; # may split to bytes if data
79 use utf8; # force char semantics
80 @chars = split //, $data; # splits characters
83 [XXX: Should this should be enabled like chr()/sprintf("%c") by looking
88 L<perlunicode>, L<byte>