(Fset_buffer_modified_p): Use the truename for locking.

diff --git a/src/buffer.c b/src/buffer.c
index d88be20bd80d5c93bc6e988be574eb3ebaae8c03..6ba826685491ad84962eb5d051703af40a94eb4f 100644 (file)
--- a/src/buffer.c
+++ b/src/buffer.c
@@ -674,7 +674,7 @@ A non-nil FLAG means mark the buffer modified.")
   /* If buffer becoming modified, lock the file.
      If buffer becoming unmodified, unlock the file.  */
 
-  fn = current_buffer->filename;
+  fn = current_buffer->file_truename;
   if (!NILP (fn))
     {
       already = SAVE_MODIFF < MODIFF;