unicharIswideCjk

Determines if a character is typically rendered in a double-width cell under legacy East Asian locales. If a character is wide according to glib.global.unicharIswide, then it is also reported wide with this function, but the converse is not necessarily true. See the Unicode Standard Annex #11 for details.

If a character passes the glib.global.unicharIswide test then it will also pass this test, but not the other way around. Note that some characters may pass both this test and glib.global.unicharIszerowidth.