Revert "* lisp/progmodes/xref.el (xref-pop-marker-stack): Don't obsolete."

This reverts commit f56408a6f0152cd46d1ea8a0985fbfeeb839ea06.

As commented by Dmitry Gutov in [1], obsoleting `xref-pop-marker-stack`
makes sense.

[1] https://lists.gnu.org/archive/html/emacs-devel/2021-10/msg01870.html

diff --git a/lisp/progmodes/xref.el b/lisp/progmodes/xref.el
index f2fc0479aadc0e25b9f3c9a7a81b084dec1f6ee6..26188bbddabfbeedc4be9639cca14394811255dc 100644 (file)
--- a/lisp/progmodes/xref.el
+++ b/lisp/progmodes/xref.el
@@ -432,7 +432,7 @@ The future stack is erased."
   (setcdr xref--history nil))
 
 ;;;###autoload
-(defalias 'xref-pop-marker-stack #'xref-go-back)
+(define-obsolete-function-alias 'xref-pop-marker-stack #'xref-go-back "29.1")
 
 ;;;###autoload
 (defun xref-go-back ()