b232fd18de
http://www.unicode.org/charts/ They are classified as PUNCT, which is historically used for characters other than blank, alphabetic, or digit ones. Glyph widths are taken from "East Asian Width": https://www.unicode.org/Public/10.0.0/ucd/EastAsianWidth.txt Characters of "F" or "W" are classified to SWIDTH2, and others are classified to SWIDTH1, as implicitly done in the previous revisions. Should address problems like PR bin/53323. Discussed with soda@. We thank Takuya SHIOZAKI (tshiozak@) for useful comments.