Make the generalized buffer-local-variable obsolete

* lisp/paren.el (show-paren-local-mode):
* lisp/electric.el (electric-indent-local-mode)
(electric-layout-local-mode, electric-quote-local-mode):
* lisp/elec-pair.el (electric-pair-local-mode): Don't use it.

* lisp/emacs-lisp/bytecomp.el (byte-compile-warn-obsolete): Autoload.

* lisp/emacs-lisp/gv.el (buffer-local-variable): Make obsolete
(bug#26624).

* lisp/emacs-lisp/gv.el (make-obsolete-generalized-variable): Move
to allow usage.

lisp/elec-pair.el

@@ -666,12 +666,13 @@ To toggle the mode in a single buffer, use `electric-pair-local-mode'."
 ;;;###autoload
 (define-minor-mode electric-pair-local-mode
   "Toggle `electric-pair-mode' only in this buffer."
-  :variable (buffer-local-value 'electric-pair-mode (current-buffer))
+  :lighter nil
   (cond
    ((eq electric-pair-mode (default-value 'electric-pair-mode))
     (kill-local-variable 'electric-pair-mode))
    ((not (default-value 'electric-pair-mode))
     ;; Locally enabled, but globally disabled.
+    (make-local-variable 'electric-pair-mode)
     (electric-pair-mode 1)		  ; Setup the hooks.
     (setq-default electric-pair-mode nil) ; But keep it globally disabled.
     )))

lisp/electric.el

@@ -340,12 +340,13 @@ use `electric-indent-local-mode'."
 ;;;###autoload
 (define-minor-mode electric-indent-local-mode
   "Toggle `electric-indent-mode' only in this buffer."
-  :variable (buffer-local-value 'electric-indent-mode (current-buffer))
+  :lighter nil
   (cond
    ((eq electric-indent-mode (default-value 'electric-indent-mode))
     (kill-local-variable 'electric-indent-mode))
    ((not (default-value 'electric-indent-mode))
     ;; Locally enabled, but globally disabled.
+    (make-local-variable 'electric-indent-mode)
     (electric-indent-mode 1)                ; Setup the hooks.
     (setq-default electric-indent-mode nil) ; But keep it globally disabled.
     )))
@@ -484,12 +485,13 @@ The variable `electric-layout-rules' says when and how to insert newlines."
 ;;;###autoload
 (define-minor-mode electric-layout-local-mode
   "Toggle `electric-layout-mode' only in this buffer."
-  :variable (buffer-local-value 'electric-layout-mode (current-buffer))
+  :lighter nil
   (cond
    ((eq electric-layout-mode (default-value 'electric-layout-mode))
     (kill-local-variable 'electric-layout-mode))
    ((not (default-value 'electric-layout-mode))
     ;; Locally enabled, but globally disabled.
+    (make-local-variable 'electric-indent-mode)
     (electric-layout-mode 1)		  ; Setup the hooks.
     (setq-default electric-layout-mode nil) ; But keep it globally disabled.
     )))
@@ -661,12 +663,13 @@ use `electric-quote-local-mode'."
 ;;;###autoload
 (define-minor-mode electric-quote-local-mode
   "Toggle `electric-quote-mode' only in this buffer."
-  :variable (buffer-local-value 'electric-quote-mode (current-buffer))
+  :lighter nil
   (cond
    ((eq electric-quote-mode (default-value 'electric-quote-mode))
     (kill-local-variable 'electric-quote-mode))
    ((not (default-value 'electric-quote-mode))
     ;; Locally enabled, but globally disabled.
+    (make-local-variable 'electric-indent-mode)
     (electric-quote-mode 1)                ; Setup the hooks.
     (setq-default electric-quote-mode nil) ; But keep it globally disabled.
     )))

lisp/emacs-lisp/bytecomp.el

@@ -1355,6 +1355,7 @@ FORMAT and ARGS are as in `byte-compile-warn'."
   (let ((byte-compile-form-stack (cons arg byte-compile-form-stack)))
     (apply #'byte-compile-warn format args)))
 
+;;;###autoload
 (defun byte-compile-warn-obsolete (symbol type)
   "Warn that SYMBOL (a variable, function or generalized variable) is obsolete.
 TYPE is a string that say which one of these three types it is."

lisp/emacs-lisp/gv.el

@@ -141,6 +141,18 @@ all the parts of PLACE that can be evaluated and then runs E.
   (declare (indent 2) (debug (sexp form def-body)))
   `(gv-get ,place (lambda ,vars ,@body)))
 
+(defun make-obsolete-generalized-variable (obsolete-name current-name when)
+  "Make byte-compiler warn that generalized variable OBSOLETE-NAME is obsolete.
+The warning will say that CURRENT-NAME should be used instead.
+
+If CURRENT-NAME is a string, that is the `use instead' message.
+
+WHEN should be a string indicating when the variable was first
+made obsolete, for example a date or a release number."
+  (put obsolete-name 'byte-obsolete-generalized-variable
+       (purecopy (list current-name when)))
+  obsolete-name)
+
 ;; Different ways to declare a generalized variable.
 ;;;###autoload
 (defmacro gv-define-expander (name handler)
@@ -395,6 +407,7 @@ The return value is the last VAL in the list.
 (gv-define-setter buffer-local-value (val var buf)
   (macroexp-let2 nil v val
     `(with-current-buffer ,buf (set (make-local-variable ,var) ,v))))
+(make-obsolete-generalized-variable 'buffer-local-value nil "29.1")
 
 (gv-define-expander alist-get
   (lambda (do key alist &optional default remove testfn)
@@ -619,18 +632,6 @@ REF must have been previously obtained with `gv-ref'."
 
 ;;; Generalized variables.
 
-(defun make-obsolete-generalized-variable (obsolete-name current-name when)
-  "Make byte-compiler warn that generalized variable OBSOLETE-NAME is obsolete.
-The warning will say that CURRENT-NAME should be used instead.
-
-If CURRENT-NAME is a string, that is the `use instead' message.
-
-WHEN should be a string indicating when the variable was first
-made obsolete, for example a date or a release number."
-  (put obsolete-name 'byte-obsolete-generalized-variable
-       (purecopy (list current-name when)))
-  obsolete-name)
-
 ;; Some Emacs-related place types.
 (gv-define-simple-setter buffer-file-name set-visited-file-name t)
 (make-obsolete-generalized-variable

lisp/paren.el

@@ -149,7 +149,7 @@ use `show-paren-local-mode'."
 ;;;###autoload
 (define-minor-mode show-paren-local-mode
   "Toggle `show-paren-mode' only in this buffer."
-  :variable (buffer-local-value 'show-paren-mode (current-buffer))
+  :lighter nil
   (cond
    ((eq show-paren-mode (default-value 'show-paren-mode))
     (unless show-paren-mode
@@ -157,6 +157,7 @@ use `show-paren-local-mode'."
     (kill-local-variable 'show-paren-mode))
    ((not (default-value 'show-paren-mode))
     ;; Locally enabled, but globally disabled.
+    (make-local-variable 'show-paren-mode)
     (show-paren-mode 1)                ; Setup the timer.
     (setq-default show-paren-mode nil) ; But keep it globally disabled.
     )