This module provide user-defined Unicode properties that deal with East Asian characters' width status, as specified in <http://www.unicode.org/unicode/reports/tr11></http:>.
It exports the following functions to the caller's scope, to be used by Perl's Unicode matching system: "InEastAsianFullwidth", "InEastAsianHalfwidth", "InEastAsianAmbiguous", "InEastAsianNarrow" "InEastAsianWide", "InEastAsianNeutral".
In accord to TR11 cited above, two additional context-sensitive properties are exported: "InFullwidth" (union of "Fullwidth" and "Wide") and "InHalfwidth" (union of "Halfwidth", "Narrow" and "Neutral").
*Ambiguous* characters are treated by default as part of "InHalfwidth", but you can modify this behaviour by assigning a true value to $Unicode::EastAsianWidth::EastAsian.