Re: More on Tibetan, or rather: ligatures

[Oliver Corff]

Hi Tom,

last time, I already mentioned that e.g. the terminal has no problems
creating mandatory ligatures with a regular Tibetan font.

I did not forget the issue, I am just under pressure to deliver work
bound by a deadline, which will be another fortnight from now.

Best regards,

Oliver.


On 04/02/2024 15:11, Tom wrote:
> Hi Oliver
> and others,
>
> I don't have knowledge if the matter is about building ligatures.
> I have found out, that in some tibetan fonts there are already present
> stacked forms.
> Are they functional ligatures? If so perhaps one can go this route?
>
> Oliver what are your thoughts about it.
> Did you make any progress?
>
>
> For anyone interested, here is The Unicode Standard document.
> https://www.unicode.org/versions/Unicode15.0.0/ch13.pdf
> There is short chapter 13.4 and clear description
> how tibetan gliphs are stacked.
>
> I wonder if groff is able to stack few levels and build full head forms
> or half forms like in རྦ་ called ra-go. In groff ra-go is not recognized
> and shows in full form ར
>
> What only works for me in groff is that it stacks below baseline letter
> with one subjoined letter plus vowel above or vowel below.
> The second subjoined is overprinting first subjoined.
>
> Would be great if someone experienced in groff with fonts can
> answer if it is possible to stack letters in more then 2 levels?
> Perhaps there is another way to recognize stacked letters
> or just to use .char and similar functions?
>
> Regards,
> Tom
--

Dr. Oliver Corff
Mail:oliver.corff@email.de