Re: Implementing Vertical Text support in Emacs

[Eli Zaretskii]

> From: समीर सिंह Sameer Singh <lumarzeli30@gmail.com>
> Date: Sun, 20 Nov 2022 16:48:31 +0530
> Cc: emacs-devel@gnu.org
> 
> I tried writing a vertical version of the display_line function but could not 
> get it to work. Emacs does not
> display any character after these changes.
> (maybe I should have also rewrote move_it_in_display_line_to?)

I don't think move_it_in_display_line_to is relevant at this early stage of
your work.

> Therefore forgive me for asking again, if for now I just want to make the 
> characters appear column wise
> instead of row wise, disregarding line overflow, or termination of a line etc,
> do I still have to look into the display_line function, because as I recall I 
> had once removed most of the lines
> of the display_line function and Emacs was still displaying lines fines.

I'm not sure I understand the question.  Are you saying that if you ignore
the line overflow, termination of a line, etc., you can write code that does
display characters column-wise?

In any case, it is hard to discuss this without seeing the code which
doesn't work.  Is the code you wrote available anywhere for review?