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lib/Unicode/CharWidth.pm  view on Meta::CPAN

InDoubleWidth, and InNowidth.

They are not derived from Unicode documents directly, but rely on
the implementation of the C library function C<wcwidth(3)>.

=over 4

=item InZerowidth

C</\p{InZerowidth}/> matches the characters that don't occupy 
column space of their own. Most of these are modifying or overlay
characters that add accents or overstrokes to the preceding character.
C<"\0"> also has zero width. It is the only zero width character in
the ASCII range.

=item InSinglewidth

C</\p{InSinglewidth}/> matches what most westerners would consider
"normal" characters that occupy a single screen column. All printing
(non-control) ASCII characters are in this class, as well as most
characters in other alphabetic scripts.