From 974170b70a28505e4b26109f45f9708bb595fc41 Mon Sep 17 00:00:00 2001
From: Oleg Shpynov <oleg.shpynov@jebrains.com>
Date: Wed, 24 Nov 2010 00:09:42 +0300
Subject: [PATCH] Better check whether history is not empty

---
 .../runners/AbstractConsoleRunnerWithHistory.java         | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/platform/lang-impl/src/com/intellij/execution/runners/AbstractConsoleRunnerWithHistory.java b/platform/lang-impl/src/com/intellij/execution/runners/AbstractConsoleRunnerWithHistory.java
index ab3174bb3b0e..e60f7949924c 100644
--- a/platform/lang-impl/src/com/intellij/execution/runners/AbstractConsoleRunnerWithHistory.java
+++ b/platform/lang-impl/src/com/intellij/execution/runners/AbstractConsoleRunnerWithHistory.java
@@ -235,7 +235,9 @@ public abstract class AbstractConsoleRunnerWithHistory {
         if (lineNumber > 0){
           caretModel.moveCaretRelatively(0, -1, false, consoleEditor.getSelectionModel().hasBlockSelection(), true);
         } else {
-          historyProcessor.process(e, myHistory.getHistoryPrev());
+          if (myHistory.hasHistory(false)) {
+            historyProcessor.process(e, myHistory.getHistoryPrev());
+          }
         }
       }
     };
@@ -246,7 +248,9 @@ public abstract class AbstractConsoleRunnerWithHistory {
         if (lineNumber < document.getLineCount() - 1){
           caretModel.moveCaretRelatively(0, 1, false, consoleEditor.getSelectionModel().hasBlockSelection(), true);
         } else {
-          historyProcessor.process(e, myHistory.getHistoryNext());
+          if (myHistory.hasHistory(true)) {
+            historyProcessor.process(e, myHistory.getHistoryNext());
+          }
         }
       }
     };