Re: bidi-display-reordering is now non-nil by default

[Eli Zaretskii]

> From: Stefan Monnier <address@hidden>
> Cc: address@hidden
> Date: Mon, 22 Aug 2011 15:35:24 -0400
> 
> I guess this brings us back to "a way to mark some char as a field
> separator, just like a TAB; and in this particular case it clearly would
> be fine to do it via a `display' property.
> 
> Some might even argue that a (space :align-to ...) display property is
> sufficiently similar to a TAB that such a property should be interpreted
> similarly to a field separator by the bidi reordering code.

Only :align-to, or any other properties supported by the `space'
display spec?  If only the former, why only that?  Why not :width, for
example?

> Assuming it's not straightforward to change the C code to handle such
> display properties (not simple enough for 24.1, or maybe we're not sure
> it's actually a good idea to do it)

It wouldn't be hard to add this feature, if you think it's okay to do
that now, the feature freeze notwithstanding.  I would need the answer
to the question above, though.

> >> can you tell whether other completion facilities in Emacs might need
> >> similar changes?
> 
> I'd tend to think that most/all other completion facilities should be
> fixed by using the generic code rather than by fixing their code, so
> they shouldn't need similar changes.

"Generic code" meaning treating a `space' display spec as a segment
separator?  If that's not what you meant, I don't understand what
other generic solution would be possible.

In any case, please humor me by giving the list of completion packages
outside of minibuffer.el, as my knowledge of this area barely covers
the standard completion facilities.