Re: latin1-display vs. unify-8859-on-encoding-mode

[Kenichi Handa]

In article <address@hidden>, Jesper Harder <address@hidden> writes:

> This is in an xterm in a latin-1 locale:
>    (latin1-display 'latin-9)

> does not have the desired effect of displaying the otherwise
> undisplayable latin-9 characters, such as euro, with the mnemonics
> defined in latin1-disp.el when unify-8859-on-encoding-mode is on.  It
> works if it's turned off.

> The problem seems to be that `latin1-display-check-font' tests for a
> condition like:

>   (char-displayable-p (make-char 'latin-iso8859-15 ?\ ))
>    => 2208

> i.e. the latin-9 SPC is unified to latin-1.

You are right.

> It works if you use a generic character instead of SPC,
> but I don't know if it's the proper fix.

No, char-displayable-p doesn't work well with a generaic char.

The attached change will fix the problem, but it makes the
execution of latin1-display slower because of repeated call
of char-displayable-p.  Could you please try it?  In my
2.8GHz PC, the slowness is ignoreable, but perhaps not in a
slower matchine.

Dave, what do you think about this change?

If the slowness is not ignoreable, I'll try to find a better
fix.

By the way, is calling (latin1-display-identities set) the
right thing?

---
Ken'ichi HANDA
address@hidden

latin1-disp.diff.gz
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