[BRLTTY] de.ttb

[Mario Lang]

Samuel Thibault <samuel.thibault at ens-lyon.org> writes:

> Mario Lang, le Sat 09 Aug 2008 10:55:00 +0200, a écrit :
>> Jason White <jason at jasonjgw.net> writes:
>> > On Sat, Aug 09, 2008 at 01:30:12AM -0400, Dave Mielke wrote:
>> >
>> >> >There are other things like certain symbols are kind of duplicated in Unicode.  
>> >> >But I cant think of any right now, I'd need to check.
>> >
>> > As I remember, accented letters are among these: there are so-called
>> > "combining" characters that allow the letter and the accent to be specified
>> > separately, as well as characters that represent the accented letters as
>> > single, combined entities.
>> 
>> Well, a separate character would mean that one representation uses more
>> cells than another, right?  Normalising that sounds wrong.
>
> Yes and no.  The combining character doesn't take room on the screen.
> So for instance é (e with acute accent) and é (e + combining acute
> accent), although different strings, normalize to the same, and for a
> good reason: they appear exactly the same on my screen, occupying only
> one column.

Oh, that makes good sense then.  Thanks for explaining.

>> > One solution to this is to "normalize" the Unicode string before it reaches
>> > the braille translation functions, so that only one representation is ever
>> > used for those characters.
>> 
>> If DESCCHAR still returns the original character value, I agree.  If not,
>> I disagree...  DESCCHAR should always report the actual character...
>
> I agree with you.  The normalization should only happen just before the
> output.

I.e., in a table, which sort of brings us back to Dave's equivalence idea.

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