Fix 'transpose-regions' when LEAVE-MARKERS arg is non-nil

[gnu-emacs] / src / editfns.c

diff --git a/src/editfns.c b/src/editfns.c
index 4c8336b8c8209ab63e7cec430ae8285a8907e4c2..aed884ebe1c40d7b339eb9118d7b23c05e48f5d8 100644 (file)
--- a/src/editfns.c
+++ b/src/editfns.c
@@ -5058,6 +5058,14 @@ Transposing beyond buffer boundaries is an error.  */)
                         start2_byte, start2_byte + len2_byte);
       fix_start_end_in_overlays (start1, end2);
     }
+  else
+    {
+      /* The character positions of the markers remain intact, but we
+        still need to update their byte positions, because the
+        transposed regions might include multibyte sequences which
+        make some original byte positions of the markers invalid.  */
+      adjust_markers_bytepos (start1, start1_byte, end2, end2_byte, 0);
+    }
 
   signal_after_change (start1, end2 - start1, end2 - start1);
   return Qnil;