Re: Setting up indent-on-type in a treesit based major-mode

[Joel Reicher]

Karan Ahlawat <ahlawatkaran12@gmail.com> writes:

> Today I was using ruby-ts-mode and found out that it can indent 
> some keywords as soon as they're typed out fully (example, when 
> inside a case block). I'd love to implement such a feature in 
> scala-ts-mode, so I looked at the source code, but could not see 
> anything special it might be doing besides simple treesit indent 
> setup.
>
> So, how does it exactly achieve this indent-on-type behavior (I 
> can see the matcher being called if I set 
> treesit--indent-verbose to t), and how could I reproduce this in 
> my own major-mode?

ruby-ts-mode is a derived mode, and the parent is ruby-base-mode 
which has some electric indent stuff. I think that's what you're 
after?

Regards,

       - Joel