On Sat, 7 Apr 2012 16:07:28 +0530
sankarshan wrote:

> On Sat, Apr 7, 2012 at 12:02 AM, Guntupalli Karunakar
> <karuna...@indlinux.org> wrote:
> 
> > Ok, let me give this a try.. using a code in PUA would be better,
> > so as not to break existing stuff. Will update in 2-3 days.
> > Meanwhile list the combinations you would like to see.
> 
> "using a code in PUA would be better" is perhaps a simplification of
> the issue. From
> <http://scripts.sil.org/cms/scripts/page.php?item_id=VendorUseOfPUA>
> "It is not always easy to find out how software vendors have made
> use of the Unicode private use areas. Use by software vendors of
> PUA code points does not necessarily represent a concern for end
> users that have their own PUA character needs, provided that
> software products do not assume semantics for PUA code points that
> affect text processing in ways that are adverse in relation to the
> user's needs. This has been known to happen in some products,
> however."
> 

Going back in time, when we did not yet have Indic standardized or
it was not working yet, there were steps to use it with some hacks,
some which in long run either died out, or evolved into a standard
solution. So while above aspect may hold, but it should not prevent
in making an attempt to solve the problem  in question.

> As a question, is there a specific reason we are going down the PUA
> path ? The original email alluded to making changes in the Bengali
> codepoint range. The emails from Runa and Praveen indicate that
> while this is possible, there needs to be a specific path that
> needs to be followed. In fact, Praveen ends up raising questions
> around rendering engines as well.
> 

If only changes in font would have worked, would not need PUA, but
as Praveen pointed there would issues in rendering engine too - since
said character 09F0 has semantics of a Assamese RA. As for redefining
any other existing character its not clear again which one to use or
if to use a reserved code point (eg. 09B5) or maybe use code in PUA
for time being.

> A PUA may help out Swarup, but like I mention in an earlier email,
> these niche fixes are counter productive and end up being a
> maintenance burden.
> 

At times few backward steps are needed to take a bigger leap.
So an attempt to solve the problem technically might bring closer to
the path to take, than not attempting it at all for concern of
future maintainability.

> > Also perhaps could discuss this further off list.
> 
> Why ? If this touches the Bengali community I'd rather have it on
> the 'anubad' list of ankur.org.in if indlinux feels it is off-topic.
> 

Not that the discussion is off-topic for the list, but since I have
agreed to work out a non-standard solution for Swarup's need, I said
communication regarding it could be off-list. Once a solution is
ready, it will be available for further deliberations on how or what
approach to take to do it on lines of standard way.
 And it would sure benefit the debate (how best to write
Sanskrit in Bengali or have distinct shapes for sounds BA and VA)
better if held in forum which represents bigger Bengali community. I
suggest Swarup to raise the issues there for wider discussion.

Karunakar

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