=head2 Position information
-In addition to what was matched, Perl (since 5.6.0) also provides the
+In addition to what was matched, Perl also provides the
positions of what was matched as contents of the C<@-> and C<@+>
arrays. C<$-[0]> is the position of the start of the entire match and
C<$+[0]> is the position of the end. Similarly, C<$-[n]> is the
program, but not when contained in a string that is interpolated in a
pattern.
-With the advent of 5.6.0, Perl regexps can handle more than just the
-standard ASCII character set. Perl now supports I<Unicode>, a standard
+Perl regexps can handle more than just the
+standard ASCII character set. Perl supports I<Unicode>, a standard
for representing the alphabets from virtually all of the world's written
languages, and a host of symbols. Perl's text strings are Unicode strings, so
they can contain characters with a value (codepoint or character number) higher
material with links to other resources at
L<http://www.unicode.org/standard/where>.
-The answer to requirement 2) is, as of 5.6.0, that a regexp (mostly)
-uses Unicode characters. (The "mostly" is for messy backward
+The answer to requirement 2) is that a regexp (mostly)
+uses Unicode characters. The "mostly" is for messy backward
compatibility reasons, but starting in Perl 5.14, any regex compiled in
the scope of a C<use feature 'unicode_strings'> (which is automatically
turned on within the scope of a C<use 5.012> or higher) will turn that
"mostly" into "always". If you want to handle Unicode properly, you
-should ensure that C<'unicode_strings'> is turned on.)
+should ensure that C<'unicode_strings'> is turned on.
Internally, this is encoded to bytes using either UTF-8 or a native 8
bit encoding, depending on the history of the string, but conceptually
it is a sequence of characters, not bytes. See L<perlunitut> for a
https://perl5.git.perl.org / perl5.git / commitdiff