(dabbrev-expand): Save previous point for undo.

1 files changed, 3 insertions, 1 deletions

diff --git a/lisp/dabbrev.el b/lisp/dabbrev.el
index 438ad165559..a28c9023571 100644
--- a/lisp/dabbrev.el
+++ b/lisp/dabbrev.el
@@ -415,7 +415,7 @@ direction of search to backward if set non-nil.
 
 See also `dabbrev-abbrev-char-regexp' and \\[dabbrev-completion]."
   (interactive "*P")
-  (let (abbrev expansion old direction)
+  (let (abbrev expansion old direction (orig-point (point)))
     ;; abbrev -- the abbrev to expand
     ;; expansion -- the expansion found (eventually) or nil until then
     ;; old -- the text currently in the buffer
@@ -489,6 +489,7 @@ See also `dabbrev-abbrev-char-regexp' and \\[dabbrev-completion]."
       (dabbrev--reset-global-variables)
       (if old
           (save-excursion
+            (setq buffer-undo-list (cons orig-point buffer-undo-list))
             (search-backward (substring old (length abbrev)))
             (delete-region (match-beginning 0) (match-end 0))))
       (error "No%s dynamic expansion for `%s' found"
@@ -507,6 +508,7 @@ See also `dabbrev-abbrev-char-regexp' and \\[dabbrev-completion]."
           (setq dabbrev--last-expansion-location
                 (copy-marker dabbrev--last-expansion-location)))
       ;; Success: stick it in and return.
+      (setq buffer-undo-list (cons orig-point buffer-undo-list))
       (dabbrev--substitute-expansion old abbrev expansion)
       ;; Save state for re-expand.
       (setq dabbrev--last-expansion expansion)