Hi,
On Thu, 12 Apr 2007, Egmont Koblinger wrote:
> On Thu, Apr 12, 2007 at 05:52:49PM +0200, Roman Zippel wrote:
>
> > Well, it often doesn't end there, other users may report these as bugs and
> > want to get them fixed, so we have to look ahead a little for possible
> > problems.
>
> They may even report that the current behavior of not knowing anything about
> double-width characters is wrong. If Unicode is updated and someone reports
> the kernel code is outdated, it's going to be fairly easy to update that one
> as well.
As far as Unicode is concerned we could go really wild here, e.g. how do
we handle decomposed characters, there are also halfwidth characters...
So the primary question is still: is this a kernel problem? The kernel
only implements a simple fixed char width output device. Does it really
make sense to pretend being able to handle characters, we can't display
in first place?
> > It has everything to do with this. It describes the terminal capabilities,
> > so why should variable width support not one part of it?
>
> Nice idea. Terminfo database should tell whether a particular terminal
> supports double-width characters. Applications should expect the cursor to
> move one or two cells depending on this. So both terminfo databases as well
> as plenty of libraries and applications would need update.
If everyone reimplements this kind of stuff, something is seriously
wrong...
bye, Roman
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