Re: [emacs-bidi] debugging visual-to-logical

[Alex Schroeder]

"Ehud Karni" <address@hidden> writes:

> There are also problems with digits and punctuation (depends on the 
> specific order). For example try to represent logically the following
> visual text:
>     ABCDE .50$ FGHIJ 
>     ABCDE .50% FGHIJ 
>     ABCDE .$50 FGHIJ       
>     ABCDE .%50 FGHIJ 
>
> Each of the above will be easily represented with formatting LRM.

I went back to this problems to try and see wether bidi.el doesn't in
fact to the right thing.  And it seems that it does.  The only thing
it doesn't do is return a "reasonable" logical representation.  Here's
the first problem as an example:

(bidi-visual-to-logical "ABCDE .50$ FGHIJ" 'R2L)
"JIHGF 50$. EDCBA"

But all of the logical representations are correct in that they can be
transformed back to the correct visual representation.

(bidi-logical-to-visual (bidi-visual-to-logical "ABCDE .50$ FGHIJ" 'R2L) 'R2L)
"ABCDE .50$ FGHIJ"
(bidi-logical-to-visual (bidi-visual-to-logical "ABCDE .50% FGHIJ" 'R2L) 'R2L)
"ABCDE .50% FGHIJ"
(bidi-logical-to-visual (bidi-visual-to-logical "ABCDE .$50 FGHIJ" 'R2L) 'R2L)
"ABCDE .$50 FGHIJ"
(bidi-logical-to-visual (bidi-visual-to-logical "ABCDE .%50 FGHIJ" 'R2L) 'R2L)
"ABCDE .%50 FGHIJ"

(bidi-logical-to-visual (bidi-visual-to-logical "ABCDE .50$ FGHIJ" 'L2R) 'L2R)
"ABCDE .50$ FGHIJ"
(bidi-logical-to-visual (bidi-visual-to-logical "ABCDE .50% FGHIJ" 'L2R) 'L2R)
"ABCDE .50% FGHIJ"
(bidi-logical-to-visual (bidi-visual-to-logical "ABCDE .$50 FGHIJ" 'L2R) 'L2R)
"ABCDE .$50 FGHIJ"
(bidi-logical-to-visual (bidi-visual-to-logical "ABCDE .%50 FGHIJ" 'L2R) 'L2R)
"ABCDE .%50 FGHIJ"

Alex.
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