Fix 'reindent-then-newline-and-indent' with 'abbrev-mode'

* lisp/simple.el (reindent-then-newline-and-indent): Use a marker
for the initial position.  (Bug#71459)

1 files changed, 3 insertions, 1 deletions

diff --git a/lisp/simple.el b/lisp/simple.el
index 74115be2778..b48f46fc711 100644
--- a/lisp/simple.el
+++ b/lisp/simple.el
@@ -915,7 +915,9 @@ In programming language modes, this is the same as TAB.
 In some text modes, where TAB inserts a tab, this indents to the
 column specified by the function `current-left-margin'."
   (interactive "*")
-  (let ((pos (point))
+  ;; Use a marker because the call to 'newline' below could insert some
+  ;; text, e.g., if 'abbrev-mode' is turned on.
+  (let ((pos (point-marker))
         (electric-indent-mode nil))
     ;; Be careful to insert the newline before indenting the line.
     ;; Otherwise, the indentation might be wrong.