Re: [emacs-bidi] Re: improving bidi documents display

[Martin J. Dürst]

On 2011/03/03 13:07, Eli Zaretskii wrote:
> > From: Miles Bader<address@hidden>
> > Cc: address@hidden,  address@hidden,  address@hidden,  address@hidden
> > Date: Thu, 03 Mar 2011 10:32:49 +0900
> >
> > Eli Zaretskii<address@hidden>  writes:
> > > > Sure, but that's a general issue in Emacs, so there are already
> > > > mechanisms in place to help deal with it
> > > > (e.g. yank-excluded-properties).
> > >
> > > This one's different, believe me: no other text property changes the
> > > _order_ of characters on display in creative ways.  It could easily
> > > render the text illegible, under just the right circumstances.
> >
> > But isn't the "changed order" natural for the characters it's attached
> > to?
>
> Only in the context of the kind of text (e.g., TeX) it was copied
> from.

The copying may work if the feature is switched on for all buffers. The 
reason for this is that things have to be reevaluated/fixed anyway every 
time some buffer changes (e.g. insertion or deletion of a character) 
happens. So if the text is copied to a buffer that doesn't do any 
explicit reordering on top of the bidi algorithm, the special 
overlays/properties/whatever will just be purged out.

On the other hand, it may also make sense to copy a piece of TeX *with* 
the explicit TeX-specific reordering, because otherwise it may look like 
garbage. Please remember that the goal of all these activities is to 
make TeX or HTML/XML *legible*, because it's often illegible just with 
the basic bidi algorithm.


Regards,   Martin.

--
#-# Martin J. Dürst, Professor, Aoyama Gakuin University
#-# http://www.sw.it.aoyama.ac.jp   mailto:address@hidden