* lisp/emacs-lisp/bytecomp.el (byte-compile-make-obsolete-variable):

Disable obsolescence warnings in the file that declares it.

1 files changed, 11 insertions, 0 deletions

diff --git a/lisp/emacs-lisp/bytecomp.el b/lisp/emacs-lisp/bytecomp.el
index 2f113dfb479..5e24b80ac5a 100644
--- a/lisp/emacs-lisp/bytecomp.el
+++ b/lisp/emacs-lisp/bytecomp.el
@@ -3840,6 +3840,17 @@ that suppresses all warnings during execution of BODY."
        ,@decls
        ',(nth 1 form)))))
 
+;; If foo.el declares `toto' as obsolete, it is likely that foo.el will
+;; actually use `toto' in order for this obsolete variable to still work
+;; correctly, so paradoxically, while byte-compiling foo.el, the presence
+;; of a make-obsolete-variable call for `toto' is an indication that `toto'
+;; should not trigger obsolete-warnings in foo.el.
+(byte-defop-compiler-1 make-obsolete-variable)
+(defun byte-compile-make-obsolete-variable (form)
+  (when (eq 'quote (car-safe (nth 1 form)))
+    (push (nth 1 (nth 1 form)) byte-compile-not-obsolete-vars))
+  (byte-compile-normal-call form))
+
 (defun byte-compile-defvar (form)
   ;; This is not used for file-level defvar/consts with doc strings.
   (when (and (symbolp (nth 1 form))