[FriBidi] fribidi_reorder_runs()

[Dov Grobgeld]

Well, almost. There are actually two issues. One is that since the Unicode
version 6.3, there is a new rule N0, in which parenthesis take up a more
active meaning, and are no longer "passively" neutral. (Unfortunately, this
version of fribidi has not been finished yet.) The second issue is the
issue of mirroring, which is done after the direction of parenthesis has
been determined. If the resolved direction of a parenthesis is odd, then it
is expected that the render engine replace its shape, with that of its
mirror.

Regards,
Dov

On Wed, Feb 8, 2017 at 4:59 PM, Eduardo Castiñeyra <eduardo at brainstorm3d.com
> wrote:

>
>
> On 2/7/2017 5:19 PM, Eli Zaretskii wrote:
>
>> From: Eduardo Castiñeyra <eduardo at brainstorm3d.com>
>>> Date: Tue, 7 Feb 2017 16:39:01 +0100
>>>
>>> It turned out that our incorrect way to integrate fribidi and harfbuzz
>>> (let fribidi reorder all the characters and shape as full LTR in
>>> harfbuzz) is "surprisingly" causing problems.
>>>
>>> The problem is mainly with the parenthesis. It looks like the shaper
>>> should flip the direction of the parenthesis when it belongs to a RTL
>>> run.
>>>
>> Shouldn't reordering mirror parentheses if their level is even?
>>
>
> AFAIK, parenthesis are neutral, they inherit the direction of the text
> surrounding them
>
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