Vertical cursor movement considering character width.

[y-kim]

Cursor position is already adjusted between Latin characters and CJK characters. However I think there are other characters should be considered together.

For example, Digit x Full Stop (U+2488 ~ U+249B) or Roman Numeral x (U+2160 ~ 2179) may be better to be considered as width of 2. Monospace fonts usually give the same width for the same group of characters, and above two groups it is very difficult to display them as width of 1.

Actually it is very difficult to mark width of characters because fonts may renders them differently. For example, "Box Drawings" are considered as 1-width for western fonts, but some old Asian monospace fonts consider them as 2-width.

Here is my feature request ...

1. Selectively give 2-width to characters, OR
2. Dynamically calculate width based on a font when the font is monospace, OR
3. Give an option to configure character width.