Re: tree-sitter: Paths used for loading of language definitions

[Yuan Fu]

> On Oct 16, 2022, at 12:36 PM, Jostein Kjønigsen 
> <jostein@secure.kjonigsen.net> wrote:
> 
> Hey there, Yuan Fu.
> 
> First of all: Thank you for the tremendous effort you've put in to get a 
> tree-sitter implementation mainlined into Emacs. For some of the major-modes 
> I've been working on, tree-sitter has been a godsend and if it can enable 
> some of them to become mainlined into Emacs... I mean nothing could be better!

Thank you!

> 
> That said, I've noticed something when building the feature/tree-sitter 
> branch, and also while testing other things tree-sitter related... If a 
> language-definition SO is missing... treesit.el in Emacs only reports looking 
> for files and folders typically found within $HOME/.emacs.d/ (that is 
> user-owned files).
> 
> Based on that, I'm assuming those are the only locations probed. Is that 
> assumption correct?

It shouldn’t be. Emacs should first look in treesit-extra-load-path, then 
~/.emacs.d/tree-sitter, then standard system library locations. The exact 
locations depend on dlopen. Could you share the error message reported when 
loading a non-exist language? It should print all the locations it tries (as 
you observed).

Yuan