On Wed, 11 Jun 2025, Stéphane Marks wrote:

> On Wed, Jun 11, 2025 at 7:48 AM Yuan Fu <casouri@gmail.com> wrote:
>
>       > On Jun 10, 2025, at 11:52 AM, Peter Oliver
>       <p.d.oliver@mavit.org.uk> wrote:
>       >
>       > Recent Makefiles instead install to
>       /usr/lib/libtree-sitter-foo.so.14.0 or
>       /usr/lib/libtree-sitter-foo.so.15.0 (where 14 or 15 is the
>       Tree-sitter ABI version, taken from LANGUAGE_VERSION in the
>       parser’s src/parser.c).  Emacs should look in these places as
>       well.
>       >
>
>       Thanks for the heads-up! I pushed a change to emacs-30 to look
>       for all supported versions. Eg, if the tree-sitter library
>       supports language version 13 to 15, Emacs will try to look for
>       libtree-sitter-foo.so.13.0, libtree-sitter-foo.so.14.0, and
>       libtree-sitter-foo.so.15.0.
> 
> This is indeed a welcome improvement.  Unless I'm reading it wrong, it looks
> like the ABI tests go 0.0 forward through 15 (modulo what's intrinsically
> supported).  Should the tests be reversed so the most recent ABI takes
> precedence?

Seems reasonable to me.

Additionally, I think we only need to check .0 only if
TREE_SITTER_MIN_COMPATIBLE_LANGUAGE_VERSION is less than 15.  Anything
newer than that should be using the new file-naming scheme.

See attached patch.

-- 
Peter Oliver