Only half of a wide char being drawn under cursor

[Tiago Resende]

On Wednesday, 2013-01-30, at 14:31:04 +0200, Emanuele Giaquinta wrote:
> 
> Thanks for the report and the analysis. With which font does the problem
> occur? It seems suspicious to me is that two renditions belonging to the
> same wide char are different, but I am not sure if it is a bug.

Sorry, I didn't think to mention the font since I had tested different
ones and got the same result, so I assumed it was happening regardless
of the font used.

The one in the previous screenshot, is Nanum Gothic, specified with:

urxvt -fn 'xft:Anonymous Pro-13,xft:NanumGothic-11'

It can be found here:

http://cdn.naver.com/naver/NanumFont/fontfiles/NanumFont_TTF_ALL.zip

In testing other fonts, without Anonymous Pro for iso-8859-1, I had the
problem even with a single character, presumably because the space after
the character is now also wide and is also being treated as careful.

Besides Nanum Gothic, I was able to reproduce with:

    Baekmuk Dotum
    UnDotum
    SeoulHangang

Screenshot: http://i.imgur.com/ibZ6y8s.png

While I was unable to reproduce with:

    Daum
    Malgun Gothic

All fonts were tested through Xft, since I was unable to specify them as
X core fonts. They're also all TTF in case that makes any difference.

Maybe I should also mention that I was able to reproduce with at least
one Chinese font, so it doesn't seem to be restricted to Korean fonts.