Re: [emacs-bidi] status? news?

[Behdad Esfahbod]

On Mon, 5 Feb 2001, Eli Zaretskii wrote:

> > Date: Sun, 21 Jan 2001 17:37:21 +0330 (IRT)
> > From: Roozbeh Pournader <address@hidden>
> >
> > On Sun, 21 Jan 2001, Eli Zaretskii wrote:
> >
> > > Could you please elaborate on these problems with next text lines?
> >
> > With implicit bidi support (with LRM and RLM, but without LRE, RLE,
> > LRO, RLO, and PDF), you can first break the lines, and then apply bidi to
> > each line separately for reordering before the display.
> >
> > With explicit support, you should first do bidi on the whole paragraph,
> > then break the lines, and finally reorder the text. This is considered
> > hard to do in many applications.
>
> Nevertheless, the Unicode algorithm specifically says that
> line-breaking should happen _before_ reordering.  Is that a bug in
> UTR9?
>

I Don't think so, in the "Reordering Resolved Levels" of UTR9 it says:
"
Logically there are the following steps:
...
o  the accumulated widths of those glyphs (in logical order) are used
   to determine line breaks.
o  for each line, rules L1-L4 are used to reorder the characters on
   that line.
...
"

--behdad

  -------------------------
  Behdad Esfahbod
  email:  address@hidden
  http://bamdad.org/~behdad
  -------------------------