1 files changed, 4 insertions, 0 deletions

diff --git a/src/fileio.c b/src/fileio.c
index e45f9d59061..52a62cebe9c 100644
--- a/src/fileio.c
+++ b/src/fileio.c
@@ -4360,6 +4360,10 @@ actually used.  */)
         = (buf_bytepos_to_charpos (XBUFFER (conversion_buffer),
                                    same_at_start + inserted)
            - same_at_start_charpos);
+      /* This binding is to avoid ask-user-about-supersession-threat
+         being called in insert_from_buffer (via in
+         prepare_to_modify_buffer).  */
+      specbind (intern ("buffer-file-name"), Qnil);
       insert_from_buffer (XBUFFER (conversion_buffer),
                           same_at_start_charpos, inserted_chars, 0);
       /* Set `inserted' to the number of inserted characters.  */