According to /usr/share/i18n/charmaps/UTF-8.gz, Character width is 1 by default. W(Wide) and F(Full Width) are 2. % Character width according to Unicode 3.2. % - Default width is 1. % - Double-width characters have width 2; generated from % "grep '^[^;]*;[WF]' EastAsianWidth.txt" % and "grep '^[^;]*;[^WF]' EastAsianWidth.txt" % - Non-spacing characters have width 0; generated from PropList.txt or