More informative error when autosave file is not available

* lisp/files.el (recover-file): Distinguish in error messages
between autosave file not existing and not being current.
(Bug#29179)

1 files changed, 5 insertions, 1 deletions

diff --git a/lisp/files.el b/lisp/files.el
index ae90d19f2f2..63dd509eab8 100644
--- a/lisp/files.el
+++ b/lisp/files.el
@@ -5881,7 +5881,11 @@ an auto-save file."
       (error "%s is an auto-save file" (abbreviate-file-name file)))
   (let ((file-name (let ((buffer-file-name file))
                      (make-auto-save-file-name))))
-    (cond ((if (file-exists-p file)
+    (cond ((and (file-exists-p file)
+                (not (file-exists-p file-name)))
+           (error "Auto save file %s does not exist"
+                  (abbreviate-file-name file-name)))
+          ((if (file-exists-p file)
                (not (file-newer-than-file-p file-name file))
              (not (file-exists-p file-name)))
            (error "Auto-save file %s not current"