[liblouis-liblouisxml] Re: UEB: Unicode char representation
- From: "John J. Boyer" <john.boyer@xxxxxxxxxxxxxxxxx>
- To: liblouis-liblouisxml@xxxxxxxxxxxxx
- Date: Mon, 19 Nov 2012 12:44:40 -0600
The dot patterns for Unicode charactgers in UEB are almost certainly
different from those for Nemeth.
John
On Mon, Nov 19, 2012 at 09:44:33AM -0800, Joseph Lee wrote:
> Hi,
> Thanks - I'll investigate. Or perhaps I could include contents of
> Nemeth table to en-ueb-g1.ctb (encoded in UTF-8) to see what
> happens.Cheers,
> Joseph
> On 11/19/12, John J. Boyer <john.boyer@xxxxxxxxxxxxxxxxx> wrote:
> > liblouis does handle Unicode characters. Look at nemeth.ctb and its
> > included files. They contain Greek letters, mathematical symbols, etc.
> > written in the form \xhhhh For some months now you have been able to
> > write characters in UTF-8 encoding, if you have a keyboard that can do
> > it.
> >
> > John
> >
> > On Mon, Nov 19, 2012 at 02:04:05AM -0800, Joseph Lee wrote:
> >> Hi John and others,
> >> This is something that we may need to go over before continuing with
> >> UeB table improvements:
> >> As you may know, UEB assigns many Unicode chars to dot patterns. This
> >> include Greek and Latin letters, math symbols, transcriber notes and
> >> shapes.
> >> At this time, LibLouis does not handle Unicode chars well - the
> >> current (old) UEBC table does not even show Greek signs properly,
> >> which is beyond the range of ASCII chars. If you read a passage
> >> containing Unicode chars, the current UEBC code shows hex values for
> >> Unicode chars beyond 255. This fact might be sort of a stumbling block
> >> for languages which needs to show these Unicode characters (including
> >> UEBC) using correct braille dot patterns.
> >> Right now, I decided to experiment with encoding to see which one
> >> would suit UEBC well - ANSI (works okay, but does not show Unicode
> >> chars above 255), UTF-8 with or without bomb. It seems that one of
> >> these two UTF-8 encodings would be best suited for UEBC. However, I
> >> feel we need to do extensive testing to make sure that UEBC table does
> >> what it is supposed to do: display complex Unicode symbols using
> >> correct dot patterns, which would be useful for braille readers who
> >> needs to access technical materials using correct UEBC signs.
> >> Thanks.
> >> //JL
> >> For a description of the software, to download it and links to
> >> project pages go to http://www.abilitiessoft.com
> >
> > --
> > John J. Boyer; President, Chief Software Developer
> > Abilitiessoft, Inc.
> > http://www.abilitiessoft.com
> > Madison, Wisconsin USA
> > Developing software for people with disabilities
> >
> > For a description of the software, to download it and links to
> > project pages go to http://www.abilitiessoft.com
> >
> For a description of the software, to download it and links to
> project pages go to http://www.abilitiessoft.com
--
John J. Boyer; President, Chief Software Developer
Abilitiessoft, Inc.
http://www.abilitiessoft.com
Madison, Wisconsin USA
Developing software for people with disabilities
For a description of the software, to download it and links to
project pages go to http://www.abilitiessoft.com
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