Re: \framed (and others) don't honor directional switches

[Hans Hagen <pragma@wxs.nl>]

Khaled Hosny wrote:
> On Sat, Apr 04, 2009 at 12:35:30PM +0200, Hans Hagen wrote:
>> Khaled Hosny wrote:
>> indeed, so we're looking into it now (an dlet's forget about the  
>> page/bodydir for the moment)
>>
>> since textdir and pardir go hand-in-hand i suggest the following
>>
>> \setuplayout[direction=r2l]    % also influences general layout issues
> 
> I assume that will mirror all layout elements like double sided page
> numbering, right and left pages etc. right?

yes, the thing that idris identified in his onthology (which might have 
white spots); we start on this once some other arabic font subsystem, 
has been completed

>> \setupalign [r2l]              % textdir and pardir
>> \setuparranging[direction=r2l] % will flush pages backward
>>
>> so l2r and r2l values; as they are part of the align mechanism then,  
>> they are automatically part of all commands that have a align key
> 
> This sounds very good for me.

ok, the next beta will have the \setupalign and align= available

> While we are in it, I'd suggest that the current implicit bidi to be
> revised, currently it is broken. I suggest to be implement Unicode BiDi
> algorithm[1], and the "higher-level protocols[2]" part is worthy
> investigating. Also, I think it should be decoupled from character
> mirroring, so that one can enable mirroring while explicitly setting
> text direction. Also, some characters that had assigned mirrored
> property in Unicode 5.0.0 has been reversed in later revisions[3]
> because it "affects deployed data" (the source of all evil!), this
> includes quotation marks, so we need to handle mirroring of those
> characters as part of the suggested higher-level protocols as well.

hm, this character mirroring is kind of evil anyway (as it can also 
intefere with font features)

i'll look into it later (first need to finish a few things)

the problem with bidi is that it it has to work ok with the already 
present (of triggered) TRT / TLT nodes which is not that trivial

Hans


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