Re: Tree-sitter api

[Eli Zaretskii <eliz@gnu.org>]

> From: Yuan Fu <casouri@gmail.com>
> Date: Sun, 12 Sep 2021 21:15:31 -0700
> Cc: Tuấn-Anh Nguyễn <ubolonton@gmail.com>,
>  Theodor Thornhill <theo@thornhill.no>,
>  Clément Pit-Claudel <cpitclaudel@gmail.com>,
>  Emacs developers <emacs-devel@gnu.org>,
>  Stefan Monnier <monnier@iro.umontreal.ca>,
>  stephen_leake@stephe-leake.org
> 
> Not the end-user, no. But not really “Lisp Program”, either. I mean the human being writing the major-mode and adapting the major-mode to utilize tree-sitter features. The major mode writer should be able to figure out the correct symbol to use, if she go checks out the project name for the language definition, or the package name of the language definition in her package manager, or by some other means. For example, one should be able to figure out that tree-sitter-c is the symbol for C language definition, and tree-sitter-c-sharp that C#. Then Emacs automatically translate tree-sitter-c to libtree-sitter-c.so, and tree-sitter-c-sharp to libtree-sitter-c-sharp.so; basically adding “lib” and “.so” (or “dylib” etc). If that doesn’t give the correct library name for a qui
 rky language, the major-mode writer can add an entry to tree-sitter-library-name-override-list—(tree-sitter-quirky-lang “libtree-sitter-qlang” “tree_sitter_qlang”)—and Emacs will use that. (Or she can just use tree-sitter-qlang as the symbol, and Emacs’ auto translation would just fine.)

It makes little sense to me to request each major mode to figure this
out.  It should IMO be a service provided by the TS integration into
Emacs.

> To summarize, we have 
> 
> 	"load-suffixes” (".elc" ".el”, with M_SUFFIX & M_SEC_SUFFIX if modules enabled), 
> 	"module-file-suffix” (M_SUFFIX if modules enabled), 
> 	"load-file-rep-suffixes” ("" ".gz"). 
> 
> All contribute to the possible file names Emacs tries when loading a file (be it a Elisp file or an Emacs module). I will add a "shared-library-suffix” specifically for loading dynamic libraries, its value will be MODULES_SUFFIX regardless if module is enabled.

Maybe the other way around: define a shared-library-suffix, and make
MODULES_SUFFIX use that if Emacs is built with modules.

Otherwise, SGTM, thanks.