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RE: [External] : Implementing Vertical Text support in Emacs

From: Drew Adams
Subject: RE: [External] : Implementing Vertical Text support in Emacs
Date: Mon, 13 Jun 2022 16:16:11 +0000

> Recently while implementing the Mongolian script,
> I thought, maybe vertical text support should be
> added to Emacs too.
> Vertical text is used in scripts like the CJK
> characters, Mongolian, Phags Pa, Ogham etc.
> Scripts like the CJK characters do not need to be
> rotated when written vertically and can be written
> either from ltr or rtl, while scripts like
> Mongolian are rotated and written from left to right.
> So my questions are: Should this be done? If so,
> where should I start[?].


I have no idea whether this will help or is in any
way really related.  Maybe not.  But I'll mention
it in case it might be.

Library `find-where.el' defines commands to move
over words that are written vertically:
`fw-downward-word' and `fw-upward-word'.  (They're
written mainly as a way of illustrating some of the
library's features.)

They're like `forward-word' and `backward-word',
but they move downward and upward, not across.

More general are commands `fw-to-next-where-vertical'
and `fw-to-previous-where-vertical'.  They move to
the first buffer position directly below/above point
where a given predicate is true.  They prompt you for
the predicate.



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