Re: Patches for Emacs 25.2

[Dmitry Gutov <dgutov@yandex.ru>]

Hi Eli,

Here's a patch I'd like to install into the release branch.

It should be "obviously safe" (js-mode doesn't set a 
forward-sexp-function), and will improve performance for js2-mode users.

Some backstory: https://github.com/mooz/js2-mode/issues/369

Is it OK?

diff --git a/lisp/progmodes/js.el b/lisp/progmodes/js.el
index 6d995a0..0ba7aac 100644
--- a/lisp/progmodes/js.el
+++ b/lisp/progmodes/js.el
@@ -1851,7 +1851,8 @@ js--multi-line-declaration-indentation
    "Helper function for `js--proper-indentation'.
  Return the proper indentation of the current line if it belongs to a 
declaration
  statement spanning multiple lines; otherwise, return nil."
-  (let (at-opening-bracket)
+  (let (forward-sexp-function ; use Lisp version even in js2-mode
+        at-opening-bracket)
      (save-excursion
        (back-to-indentation)
        (when (not (looking-at js--declaration-keyword-re))