From 0901cd8431c3fd5dede1b1dc05503a5801018631 Mon Sep 17 00:00:00 2001
From: Keith Winstein <keithw@mit.edu>
Date: Sat, 5 May 2012 11:21:01 -0400
Subject: [PATCH] Don't flag blank->blank predictions.

---
 src/frontend/terminaloverlay.cc | 10 ++++------
 1 file changed, 4 insertions(+), 6 deletions(-)

diff --git a/src/frontend/terminaloverlay.cc b/src/frontend/terminaloverlay.cc
index b52695c..b6de10e 100644
--- a/src/frontend/terminaloverlay.cc
+++ b/src/frontend/terminaloverlay.cc
@@ -41,6 +41,10 @@ void ConditionalOverlayCell::apply( Framebuffer &fb, uint64_t confirmed_epoch, i
     return;
   }
 
+  if ( replacement.is_blank() && fb.get_cell( row, col )->is_blank() ) {
+    flag = false;
+  }
+
   if ( unknown ) {
     if ( flag && ( col != fb.ds.get_width() - 1 ) ) {
       fb.get_mutable_cell( row, col )->renditions.underlined = true;
@@ -49,12 +53,6 @@ void ConditionalOverlayCell::apply( Framebuffer &fb, uint64_t confirmed_epoch, i
   }
 
   if ( !(*(fb.get_cell( row, col )) == replacement) ) {
-    /*
-    if ( replacement.is_blank() && fb.get_cell( row, col )->is_blank() ) {
-      return;
-    }
-    */
-
     *(fb.get_mutable_cell( row, col )) = replacement;
     if ( flag ) {
       fb.get_mutable_cell( row, col )->renditions.underlined = true;