Re: In go-ts-mode, tab-width 4 inserts two tabs instead of one

[BTuin]

Le 26/09/2023 à 13:08, Pankaj Jangid a écrit :
> Suppose I have this struct,
>
> #+begin_src go
> package main
>
> type Message struct {
>         Response Response
>         Request Request
>         ForAPI string
> }
> #+end_src
>
> If I keep default tab-width of 8, then it works fine. But when I change
> the buffer local variable tab-width to 4, /mostly/ it inserts two tab
> chars instead of one, /sometimes/ it works fine. I have one file where
> it works just fine. And in all other files, it inserts two tabs instead
> of one.
>
> I am on branch emacs-29 and built with tree-sitter and gtk.
>
> Language mode is go-ts-mode.

That's because tab-width only controls the appearance of a tabulation. 
It doesn't change the actual indentation offset.
In go-ts-mode, the indentation offset is set by the variable 
go-ts-mode-indent-offset.  Since it is 8 by default and that you have 
set tab-width to 4, it inserts two tabs to keep the offset of 8.

So you simply need to set go-ts-mode-indent-offset to 4 or directly to 
tab-width (with (setq go-ts-mode-indent-offset tab-width)).