NAME Unicode::Util - Unicode grapheme-level versions of core Perl functions VERSION This document describes Unicode::Util v0.09. SYNOPSIS use Unicode::Util qw( grapheme_length grapheme_reverse ); # grapheme cluster ю́ (Cyrillic small letter yu, combining acute accent) my $grapheme = "ю\x{301}"; say length($grapheme); # 2 (length in code points) say grapheme_length($grapheme); # 1 (length in grapheme clusters) # Spın̈al Tap; n̈ = Latin small letter n, combining diaeresis my $band = "Spın\x{308}al Tap"; say scalar reverse $band; # paT länıpS say grapheme_reverse($band); # paT lan̈ıpS DESCRIPTION This module provides versions of core Perl string functions tailored to work on Unicode grapheme clusters, which are what users perceive as characters, as opposed to code points, which are what Perl considers characters. FUNCTIONS These functions are implemented using the "\X" character class, which was introduced in Perl v5.6 and significantly improved in v5.12 to properly match Unicode extended grapheme clusters. An example of a notable change is that CR+LF <0x0D 0x0A> is now considered a single grapheme cluster instead of two. For that reason, as well as additional Unicode improvements, Perl v5.12 or greater is strongly recommended, both for use with this module and as a language in general. These functions may each be exported explicitly or by using the ":all" tag for everything. grapheme_length($string) grapheme_length Works like "length" except the length is in number of grapheme clusters. grapheme_chop($string) grapheme_chop(@array) grapheme_chop(%hash) grapheme_chop Works like "chop" except it operates on the last grapheme cluster. grapheme_reverse($string) grapheme_reverse(@list) grapheme_reverse Works like "reverse" except it reverses grapheme clusters in scalar context. grapheme_index($string, $substring, $position) grapheme_index($string, $substring) Works like "index" except the position is in grapheme clusters. TODO "grapheme_rindex", "grapheme_substr" SEE ALSO Unicode::GCString, , Perl6::Str, , String::Multibyte AUTHOR Nick Patch COPYRIGHT AND LICENSE © 2011–2013 Nick Patch This library is free software; you can redistribute it and/or modify it under the same terms as Perl itself.