Merge branch 'emacs-26' of git.sv.gnu.org:/srv/git/emacs into emacs-26

doc/lispref/internals.texi

@@ -726,7 +726,8 @@ less than 8.
 @cindex interactive specification in primitives
 @item interactive
 This is an interactive specification, a string such as might be used
-as the argument of @code{interactive} in a Lisp function.  In the case
+as the argument of @code{interactive} in a Lisp function
+(@pxref{Using Interactive}).  In the case
 of @code{or}, it is 0 (a null pointer), indicating that @code{or}
 cannot be called interactively.  A value of @code{""} indicates a
 function that should receive no arguments when called interactively.
@@ -743,11 +744,6 @@ DEFUN ("foo", Ffoo, Sfoo, 0, UNEVALLED, 0
 @end group
 @end example
 
-If you wish to override a primitive interactive specification, just
-set the @code{interactive-form} property of the primitive function's
-symbol (@pxref{Using Interactive}).  There is no need to edit C code
-and recompile Emacs.
-
 @item doc
 This is the documentation string.  It uses C comment syntax rather
 than C string syntax because comment syntax requires nothing special