1 files changed, 3 insertions, 2 deletions

diff --git a/src/dispextern.h b/src/dispextern.h
index 084a3f9e07f..f5d20250fa7 100644
--- a/src/dispextern.h
+++ b/src/dispextern.h
@@ -1860,8 +1860,9 @@ struct bidi_it {
   bidi_dir_t sor;               /* direction of start-of-run in effect */
   int scan_dir;                 /* direction of text scan, 1: forw, -1: back */
   EMACS_INT disp_pos;           /* position of display string after ch */
-  int disp_prop_p;              /* if non-zero, there really is a
-                                   `display' property/string at disp_pos */
+  int disp_prop;                /* if non-zero, there really is a
+                                   `display' property/string at disp_pos;
+                                   if 2, the property is a `space' spec */
   int stack_idx;                /* index of current data on the stack */
   /* Note: Everything from here on is not copied/saved when the bidi
      iterator state is saved, pushed, or popped.  So only put here