Bug#860445: libvte9: U+1F3DB CLASSICAL BUILDING incorrectly rendered as a singlewidth character

[Jason Crain]

Control: reassign -1 libvte-2.91-0 0.46.1-1
Control: forwarded -1 https://bugzilla.gnome.org/781676

On Sun, Apr 16, 2017 at 07:34:25PM -0400, Alexis Hunt wrote:
> I noticed recently that U+1F3DB CLASSICAL BUILDING is incorrectly being rendered
> as a singlewidth character when it, like most (all?) emoji, is actually
> doublewidth. The result is that it overlaps with the subsequent character. It
> should be rendered as doublewidth.
> 
> I have reproduced this in Terminator and in rxvt-unicode.

I assume that you meant to file this against vte2.91  Terminator uses
vte2.91.  rxvt-unicode doesn't use any version of vte though so it won't
be affected by any possible vte bugs.

The Unicode spec is ambiguous about some of those emoji characters.  It
lists the range 1F3D4..1F3DF as neutral (N) rather than wide (W), but
elsewhere it says that emoji are considered to be wide.  I've forwarded
this to the vte developers so they can comment on whether they consider
it a bug.