[elpa] externals/transient 280df1350b: Define eieio--unbound as an alias for older Emacsen

[Jonas Bernoulli]

branch: externals/transient
commit 280df1350bad1800501349b539d0b718ae60de65
Author: Jonas Bernoulli <jonas@bernoul.li>
Commit: Jonas Bernoulli <jonas@bernoul.li>

    Define eieio--unbound as an alias for older Emacsen
    
    Closes #341.
---
 lisp/transient.el | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/lisp/transient.el b/lisp/transient.el
index 984979d028..3d4636ceaf 100644
--- a/lisp/transient.el
+++ b/lisp/transient.el
@@ -78,6 +78,10 @@ similar defect.") :emergency))
 
 (eval-when-compile (require 'subr-x))
 
+(eval-and-compile
+  (unless (boundp 'eieio--unbound) ; New name since Emacs 28.1.
+    (defvaralias 'eieio--unbound 'eieio-unbound nil)))
+
 (declare-function info "info" (&optional file-or-node buffer))
 (declare-function Man-find-section "man" (section))
 (declare-function Man-next-section "man" (n))