1 files changed, 13 insertions, 0 deletions
diff --git a/src/nvim/undo.c b/src/nvim/undo.c
index c9b0d96866..1305e013ad 100644
--- a/src/nvim/undo.c
+++ b/src/nvim/undo.c
@@ -2961,10 +2961,23 @@ static char_u *u_save_line(linenr_T lnum)
 ///
 /// @return true if the buffer has changed
 bool bufIsChanged(buf_T *buf)
+  FUNC_ATTR_WARN_UNUSED_RESULT
 {
   return !bt_dontwrite(buf) && (buf->b_changed || file_ff_differs(buf, true));
 }
 
+// Return true if any buffer has changes.  Also buffers that are not written.
+bool anyBufIsChanged(void)
+  FUNC_ATTR_WARN_UNUSED_RESULT
+{
+  FOR_ALL_BUFFERS(buf) {
+    if (bufIsChanged(buf)) {
+      return true;
+    }
+  }
+  return false;
+}
+
 /// Check if the 'modified' flag is set, or 'ff' has changed (only need to
 /// check the first character, because it can only be "dos", "unix" or "mac").
 /// "nofile" and "scratch" type buffers are considered to always be unchanged.