Re: Tree-sitter integration on feature/tree-sitter

[Dmitry Gutov]

On 08.05.2022 16:23, Eli Zaretskii wrote:
> > From: Stefan Monnier<monnier@iro.umontreal.ca>
> > Cc: Eli Zaretskii<eliz@gnu.org>,theo@thornhill.no,casouri@gmail.com,
> >    emacs-devel@gnu.org
> > Date: Sun, 08 May 2022 08:16:48 -0400
> >
> > Dmitry Gutov [2022-05-08 15:05:06] wrote:
> > > On 08.05.2022 09:18, Eli Zaretskii wrote:
> > > > While doing so, we should be aware and beware of the potential
> > > > copyright issues.  It is best for someone to read the code and
> > > > describe the ideas, and for someone else to implement those ideas
> > > > without looking at the code.
> > > We're talking about borrowing from Free Software editors, aren't we?
> > And we're not talking about borrowing code, but talking about sharing
> > the*format*  of the indentation and highlighting rules.
> AFAIU, we are just waving hands, because what code will be borrowed
> and whether it will be is anyone's guess at this point.  So I just
> wanted people to be aware of the issue when they borrow ... whatever.

Atom uses format like:

https://github.com/atom/language-javascript/pull/608/files

Support for it was implemented in 
https://github.com/atom/atom/pull/18321/ (but it would be easier to 
reimplement that in Elisp than try to "export" it via some kind of JS 
translation).

https://github.com/emacsmirror/tree-sitter-indent/blob/master/tree-sitter-indent.el 
is an existing third-party package for Emacs for Tree Sitter which does 
that. Though they seem to copy the indentation rules by hand (for now, 
only for Rust and Julia, it seems).

It should be possible to automate the latter export, though as long as 
the rules fit on one screen, manual translation should remain feasible.