Re: [emacs-bidi] mirroring of glyphs

[Behdad Esfahbod]

Warning: To test your algorithm, use test cases from everywhere you 
want, but just compare the output, with fribidi's output (fribidi in 
utf-8 mode, 'fribidi --charset UTF-8' (this is the default)), as I 
mentioned the character types differs in Unicode and the ref. imp.

behdad


On Fri, 16 Nov 2001, Alex Schroeder wrote:

> I've found a bug in my implementation of rule W4 which I have fixed.
> I've added all PGBA test cases to bidi.el.
> 
> The only test case left unresolved is the following:
> 
> 
> (bidi-visual-to-logical "<123H/>shalom<123H>" 'R2L)
> 
>  => "<Hshalom<123</H123>"
> 
> instead of
> 
> "<H123>shalom</H123>"
> 
> 
> The logical-to-visual test works fine.
> 
> (bidi-logical-to-visual "<H123>shalom</H123>")
> 
>   => "<123H/>shalom<123H>"
> 
> 
> I tried playing around with it: I tried reversing the input string and
> reversing the result in order to mirror any asymmetries in the bidi
> algorithm.  Other tests started to fail, then.  I tried leaving out
> rule W7, but again, other tests started to fail.
> 
> I think this is the point where I must use Ehud's idea.  :)
> 
> Alex.
> 

-- 
Behdad
29 Aban 1380, 2001 Nov 20

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