Tightened up how the search query is cleared.

src/MainForm.ui.cs

@@ -395,10 +395,8 @@ public partial class MainForm : Form
 
         // check if we should apply the keypress to the search results
         if ( e.KeyCode == Keys.Escape ) {
-            string prevSearchQuery = mSearchQuery.Text ;
             mSearchQuery.Text = "" ;
-            if ( prevSearchQuery == "" )
-                updateSearchResults( "" ) ;
+            e.Handled = true ;
         } else if ( e.KeyCode == Keys.Left || e.KeyCode == Keys.Right ) {
             mSearchResults.Focus() ;
             SendKeys.SendWait( "{" + e.KeyCode.ToString() + "}" ) ;