(hack-dir-local-get-variables-functions): New hookscratch/editorconfig

Make it possible to provide more dir-local variables, such as
done by the Editorconfig package.

* lisp/files.el (hack-dir-local--get-variables): Make arg optional.
(hack-dir-local-get-variables-functions): New hook.
(hack-dir-local-variables): Run it instead of calling
`hack-dir-local--get-variables`.

* doc/lispref/variables.texi (Directory Local Variables):
Document the new hook.

1 files changed, 4 insertions, 0 deletions

diff --git a/etc/NEWS b/etc/NEWS
index 52486b7bbe9..14e5dafbadc 100644
--- a/etc/NEWS
+++ b/etc/NEWS
@@ -2163,6 +2163,10 @@ completion candidate.
 
 * Lisp Changes in Emacs 30.1
 
+** New hook 'hack-dir-local-get-variables-functions'.
+This can be used to provide support for other directory-local settings
+beside '.dir-locals.el'.
+
 +++
 ** 'auto-coding-functions' can know the name of the file.
 The functions on this hook take can now find the name of the file to