[Bidi] Automatic text direction

Ely Levy elylevy at cs.huji.ac.il
Mon Feb 28 03:02:07 PST 2005

nice idea:)
But why do you need to do it by file type?
doesn't it make more sense to do ti by program?
I mean we always want to ignore xml tags in direction setting no?
why would we want an option to disable it?

Ely Levy
System group
Hebrew University
Jerusalem Israel

On Mon, 28 Feb 2005, Omer Zak wrote:

> I suggest that a standard be set for an "automatic text direction style
> sheet" rather than for "automatic text direction".  This is because
> people may have different expectations from an automatic text direction
> algorithm implementation, according to the language with which they work
> most of the time at the moment.
> The style sheet (or rather configuration file) will, by default, be in a
> standard location (say, /etc/bidi/autobidi, overridable by
> ~/.bidi/autobidi).
> The style sheet will specify, for each file type (identified by filename
> extension, MIME type, or file contents, according to standard Unix
> mechanisms).  For each relevant file type, some rules for setting
> automatic text direction will be defined.
> The case of *.xml files will be handled specifically - the automatic
> text direction rules will be associated with the scheme, which is
> associated with the *.xml file.
> Another special case is the text displayed in GUI controls of various
> types in various applications.  For this, we need a standard to identify
> application instance, application and control within application, to
> which the rules are applicable.
> About the format of the rules themselves:
> I suggest that some predicates be defined, according to the rules
> already proposed and implemented for automatic text direction.
> The predicates will be combined by means of Scheme code.
>                                                   --- Omer
> On Mon, 2005-02-28 at 11:54 +0200, Ely Levy wrote:
> > Hey,
> > I think we should create a standard for automatic text direction.
> > There are few issues on how to detect the text direction (RTL or LTR)
> > for example numbers should not be the setter of direction, the ability
> > to manual override, split text ( for example gaim nick in english line is
> > in hebrew or arabic what should be the text direction?should it be splited
> > nick from one side text from the other? should it ignore the nick and
> > detect it by the text?)
> > What about html text?how do we ignore tags as direction setters?
> >
> > the big question, can a good autodetect actually be done? or should we
> > give up on it and do maunal setting only?
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