emacs-30 d3c94102266: Fix Eshell's evaluation of empty 'progn' forms

[Jim Porter]

branch: emacs-30
commit d3c94102266fa1fe167f699a92b9064c02b63d4f
Author: Jim Porter <jporterbugs@gmail.com>
Commit: Jim Porter <jporterbugs@gmail.com>

    Fix Eshell's evaluation of empty 'progn' forms
    
    Do not merge to master.
    
    * lisp/eshell/esh-cmd.el (eshell-do-eval): Make sure we evaluate to
    'nil' for 'progn' forms with no body (bug#73722).
---
 lisp/eshell/esh-cmd.el | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lisp/eshell/esh-cmd.el b/lisp/eshell/esh-cmd.el
index e97e4f6d067..528c7f95594 100644
--- a/lisp/eshell/esh-cmd.el
+++ b/lisp/eshell/esh-cmd.el
@@ -1266,7 +1266,7 @@ have been replaced by constants."
                (setq args (cdr args)))))
        (cond
         ((eq (car form) 'progn)
-         (car (last form)))
+         (car (last (cdr form))))
         ((eq (car form) 'prog1)
          (cadr form))
         (t