(handle_display_prop): Handle empty replacement.

(handle_single_display_spec): Return -1 for empty replacement.

1 files changed, 11 insertions, 2 deletions

diff --git a/src/xdisp.c b/src/xdisp.c
index 8bbe2811869..628688c2f07 100644
--- a/src/xdisp.c
+++ b/src/xdisp.c
@@ -3471,7 +3471,10 @@ handle_display_prop (it)
     }
   else
     {
-      if (handle_single_display_spec (it, prop, object, position, 0))
+      int ret = handle_single_display_spec (it, prop, object, position, 0);
+      if (ret < 0)  /* Replaced by "", i.e. nothing. */
+        return HANDLED_RECOMPUTE_PROPS;
+      if (ret)
         display_replaced_p = 1;
     }
 
@@ -3515,7 +3518,8 @@ display_prop_end (it, object, start_pos)
    property ends.
 
    Value is non-zero if something was found which replaces the display
-   of buffer or string text.  */
+   of buffer or string text.  Specifically, the value is -1 if that
+   "something" is "nothing". */
 
 static int
 handle_single_display_spec (it, spec, object, position,
@@ -3830,6 +3834,11 @@ handle_single_display_spec (it, spec, object, position,
 
       if (STRINGP (value))
         {
+          if (SCHARS (value) == 0)
+            {
+              pop_it (it);
+              return -1;  /* Replaced by "", i.e. nothing.  */
+            }
           it->string = value;
           it->multibyte_p = STRING_MULTIBYTE (it->string);
           it->current.overlay_string_index = -1;