Non-standard Tibetan stacks (was Re: Sanskrit nasalized L)

From: Andrew West <>
Date: Tue, 16 Aug 2011 23:32:51 +0100

On 16 August 2011 18:19, Asmus Freytag <> wrote:
>> "These stacks are highly unusual and are considered beyond the scope
>> of plain text rendering. They may be handled by higher-level
>> mechanisms".
> The question is: have any such "mechanisms" been defined and deployed by
> anyone?

In my opinion, until someone produces a scan of a Tibetan text with
multiple consonant-vowel sequences, and asks how they can represent it
in plain Unicode text there is no question to be answered.

Chris Fynn asked about certain non-standard stacks he was trying to
implement in the Tibetan Machine Uni font in an email to the Tibex
list on 2006-12-09, but these didn't involve multiple consonant-vowel
sequences (one stack sequence was <0F43 0FB1 0FB1 0FB2 0FB2 0F74 0F74
0F71> which would be reordered to <0F42 0FB7 0FB1 0FB1 0FB2 0FB2 0F71
0F74 0F74> by normalization which would display differently).

Other non-standard stacks that I have seen involve horizontal
progression within the vertical stack (e.g. yang written horizontally
in a vertical stack).

More recently, the user community needed help digitizing Tibetan texts
that used the superfixed letters U+0F88 and U+0F89 within non-standard
stacks, resulting in a proposal to encode additional letters

None of these non-standard stack use cases involved multiple
consonant-vowel sequences, and I'm not sure whether I have ever seen
an example of such a sequence. I have learnt that there is little
point discussing a solution for a hypothetical problem, because when
the real problems arise they likely to be something different.

Received on Tue Aug 16 2011 - 17:39:30 CDT

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