Move buffer-local-set-state to subr because it's used at runtime

* lisp/subr.el (buffer-local-set-state)
(buffer-local-set-state--get, buffer-local-restore-state): Moved
from easy-mmode.el because they have to be available run-time.

lisp/emacs-lisp/easy-mmode.el

@@ -825,42 +825,6 @@ Interactively, COUNT is the prefix numeric argument, and defaults to 1."
            ,@body))
        (put ',prev-sym 'definition-name ',base))))
 
-
-(defmacro buffer-local-set-state (&rest pairs)
-  "Like `setq-local', but allow restoring the previous state of locals later.
-This macro returns an object that can be passed to `buffer-local-restore-state'
-in order to restore the state of the local variables set via this macro.
-
-\(fn [VARIABLE VALUE]...)"
-  (declare (debug setq))
-  (unless (zerop (mod (length pairs) 2))
-    (error "PAIRS must have an even number of variable/value members"))
-  `(prog1
-       (buffer-local-set-state--get ',pairs)
-     (setq-local ,@pairs)))
-
-;;;###autoload
-(defun buffer-local-set-state--get (pairs)
-  (let ((states nil))
-    (while pairs
-      (push (list (car pairs)
-                  (and (boundp (car pairs))
-                       (local-variable-p (car pairs)))
-                  (and (boundp (car pairs))
-                       (symbol-value (car pairs))))
-            states)
-      (setq pairs (cddr pairs)))
-    (nreverse states)))
-
-;;;###autoload
-(defun buffer-local-restore-state (states)
-  "Restore values of buffer-local variables recorded in STATES.
-STATES should be an object returned by `buffer-local-set-state'."
-  (pcase-dolist (`(,variable ,local ,value) states)
-    (if local
-        (set variable value)
-      (kill-local-variable variable))))
-
 (provide 'easy-mmode)
 
 ;;; easy-mmode.el ends here

lisp/ldefs-boot.el

@@ -8852,18 +8852,7 @@ CSS contains a list of syntax specifications of the form (CHAR . SYNTAX).
 
 (function-put 'easy-mmode-defsyntax 'lisp-indent-function '1)
 
-(autoload 'buffer-local-set-state--get "easy-mmode" "\
-
-
-\(fn PAIRS)" nil nil)
-
-(autoload 'buffer-local-restore-state "easy-mmode" "\
-Restore buffer local variable values in STATES.
-STATES is an object returned by `buffer-local-set-state'.
-
-\(fn STATES)" nil nil)
-
-(register-definition-prefixes "easy-mmode" '("buffer-local-set-state" "easy-mmode-"))
+(register-definition-prefixes "easy-mmode" '("easy-mmode-"))
 
 ;;;***
 

lisp/subr.el

@@ -207,6 +207,39 @@ Also see `local-variable-p'."
     (:success t)
     (void-variable nil)))
 
+(defmacro buffer-local-set-state (&rest pairs)
+  "Like `setq-local', but allow restoring the previous state of locals later.
+This macro returns an object that can be passed to `buffer-local-restore-state'
+in order to restore the state of the local variables set via this macro.
+
+\(fn [VARIABLE VALUE]...)"
+  (declare (debug setq))
+  (unless (zerop (mod (length pairs) 2))
+    (error "PAIRS must have an even number of variable/value members"))
+  `(prog1
+       (buffer-local-set-state--get ',pairs)
+     (setq-local ,@pairs)))
+
+(defun buffer-local-set-state--get (pairs)
+  (let ((states nil))
+    (while pairs
+      (push (list (car pairs)
+                  (and (boundp (car pairs))
+                       (local-variable-p (car pairs)))
+                  (and (boundp (car pairs))
+                       (symbol-value (car pairs))))
+            states)
+      (setq pairs (cddr pairs)))
+    (nreverse states)))
+
+(defun buffer-local-restore-state (states)
+  "Restore values of buffer-local variables recorded in STATES.
+STATES should be an object returned by `buffer-local-set-state'."
+  (pcase-dolist (`(,variable ,local ,value) states)
+    (if local
+        (set variable value)
+      (kill-local-variable variable))))
+
 (defmacro push (newelt place)
   "Add NEWELT to the list stored in the generalized variable PLACE.
 This is morally equivalent to (setf PLACE (cons NEWELT PLACE)),

test/lisp/emacs-lisp/easy-mmode-tests.el

@@ -60,16 +60,4 @@
     (easy-mmode-test-mode 'toggle)
     (should (eq easy-mmode-test-mode t))))
 
-(ert-deftest test-local-set-state ()
-  (setq global 1)
-  (with-temp-buffer
-    (setq-local local 2)
-    (let ((state (buffer-local-set-state global 10
-                                         local 20
-                                         unexist 30)))
-      (buffer-local-restore-state state)
-      (should (= global 1))
-      (should (= local 2))
-      (should-not (boundp 'unexist)))))
-
 ;;; easy-mmode-tests.el ends here

test/lisp/subr-tests.el

@@ -1058,5 +1058,17 @@ final or penultimate step during initialization."))
   (should (equal (kbd "C-x ( C-d C-x )") ""))
   (should (equal (kbd "C-x ( C-x )") "")))
 
+(ert-deftest test-local-set-state ()
+  (setq global 1)
+  (with-temp-buffer
+    (setq-local local 2)
+    (let ((state (buffer-local-set-state global 10
+                                         local 20
+                                         unexist 30)))
+      (buffer-local-restore-state state)
+      (should (= global 1))
+      (should (= local 2))
+      (should-not (boundp 'unexist)))))
+
 (provide 'subr-tests)
 ;;; subr-tests.el ends here