Re: Right-to-left text in org mode

[Manuel GJT <valhifi@gmail.com>]

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It turns out that org mode does force directionality in its buffers. I
found in org.el the line

5308  (setq bidi-paragraph-direction 'left-to-right)

However, bidi-paragraph-direction is always buffer local when set. That
explains why switching to other mode does not help.

The solution is to set bidi-paragraph-direction to nil in org buffers with
mixed LTR and RTL texts. This, however, might change the alignment of some
headings to right-aligned. But the bidi markers now work just fine, so it's
just a matter of placing them wisely.

I appreciate the time you took for this little discussion. It helped me get
a clearer picture of the inner workings of bidi and emacs.


Kind regards,

Manuel GJT


On Tue, Jun 25, 2013 at 2:03 AM, Dov Grobgeld <dov.grobgeld@gmail.com>wrote:

> A work around seems to be to provide an empty line between the LTR and
> the RTL paragraph. I.e. instead of
>
> * this is ltr
> * THIS IS RTL
>
> do:
>
> * this is ltr
>
> * THIS IS RTL
>
> But you are correct that the wrapping of LTR paragraphs with RTL text
> is buggy. This bug seems to have nothing to do with org mode, but
> happens e.g. in text mode and fundamental mode as well. You should
> raise this issue on the emacs-list or file a bug with emacs.
>
> On Tue, Jun 25, 2013 at 7:27 AM, Manuel GJT <valhifi@gmail.com> wrote:
> > Specifically what additional information should I provide? This happens
> to
> > me even without my .emacs loaded. I'm running Ubuntu 12.04 with
> > m17n-(db/contrib), libm17n-(0/dev) installed.
> >
> > It seems that in org mode is forcing LTR in mixed-directionality texts
> > since, for example, a heading with RTL text will not change the stars to
> be
> > right-aligned, and the cursor's behavior in org mode is different than
> in a
> > clean buffer.
> >
> > Perhaps you could show me how to ignore any previous paragraph settings
> > other than with R-T-L MARK?
> >
> >
> > Kind regards,
> >
> > Manuel GJT
> >
> >
> > On Mon, Jun 24, 2013 at 12:49 PM, Dov Grobgeld <dov.grobgeld@gmail.com>
> > wrote:
> >>
> >> I was able to reproduce this behavior only with by forcing the
> >> paragraph direction to LTR or equivilantly by having a first strong
> >> LTR character in the beginning of the paragraph. Please provide more
> >> information about your environment, and someone might be able to help
> >> you.
> >>
> >> Regards,
> >> Dov
> >>
> >>
> >> On Mon, Jun 24, 2013 at 8:22 PM, Manuel GJT <valhifi@gmail.com> wrote:
> >> > Hello everyone,
> >> >
> >> > I need to work in an org buffer with both left-to-right and
> >> > right-to-left
> >> > text. Although the character directionality and composition works
> fine,
> >> > when
> >> > writing paragraphs with visual-line-mode on the lines get inverted,
> >> > i.e.,
> >> > the line
> >> >
> >> > ZYX CBA
> >> >
> >> > appears as
> >> >
> >> > ZYX
> >> > CBA
> >> >
> >> > instead of
> >> >
> >> > CBA
> >> > ZYX
> >> >
> >> > The section "22.20 Bidirectional Editing" of the Emacs manual suggests
> >> > forcing the directionality of the paragraph with RIGHT-TO-LEFT MARK,
> but
> >> > this does not seem to work: even with such a character beginning the
> >> > line,
> >> > (current-bidi-paragraph-direction) returns "left-to-right".
> >> >
> >> > The RTL MARK seems to work just fine in tables.
> >> >
> >> > When written in a clean text-mode buffer the same text appears with
> >> > proper
> >> > directionality. However switching from org-mode to text-mode does not
> >> > correct directionality in said paragraphs. The issue persists even
> when
> >> > visiting the file with emacs -Q.
> >> >
> >> > org-version 8.0.3, same issue with v. 7.9.4
> >> >
> >> > Your help is much appreciated.
> >> >
> >> > --
> >> > Manuel GJT
> >
> >
> >
> >
> > --
> > Manuel GJT
>



-- 
Manuel GJT

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