From 3334c0b2b78c961eaee2b24a897dcd8bd70b7097 Mon Sep 17 00:00:00 2001
From: peter <peter@jetbrains.com>
Date: Thu, 21 Nov 2013 16:29:11 +0100
Subject: [PATCH] support hippie completion at the file start (EA-52100)

---
 .../completion/HippieCompletionTest.groovy          | 13 +++++++++++++
 .../actions/HippieWordCompletionHandler.java        |  2 +-
 2 files changed, 14 insertions(+), 1 deletion(-)

diff --git a/java/java-tests/testSrc/com/intellij/codeInsight/completion/HippieCompletionTest.groovy b/java/java-tests/testSrc/com/intellij/codeInsight/completion/HippieCompletionTest.groovy
index ab9ea13a425d..2a8572ab1926 100644
--- a/java/java-tests/testSrc/com/intellij/codeInsight/completion/HippieCompletionTest.groovy
+++ b/java/java-tests/testSrc/com/intellij/codeInsight/completion/HippieCompletionTest.groovy
@@ -128,6 +128,19 @@ class Xoo {
 
   }
 
+  public void "test file start"() {
+    myFixture.configureByText "a.java", '''<caret>
+class Xoo {
+}
+'''
+    complete()
+    myFixture.checkResult '''class<caret>
+class Xoo {
+}
+'''
+
+  }
+
   private void complete() {
     myFixture.performEditorAction(IdeActions.ACTION_HIPPIE_COMPLETION)
   }
diff --git a/platform/lang-impl/src/com/intellij/codeInsight/completion/actions/HippieWordCompletionHandler.java b/platform/lang-impl/src/com/intellij/codeInsight/completion/actions/HippieWordCompletionHandler.java
index 19d4804efbe5..cbfa8ed941c2 100644
--- a/platform/lang-impl/src/com/intellij/codeInsight/completion/actions/HippieWordCompletionHandler.java
+++ b/platform/lang-impl/src/com/intellij/codeInsight/completion/actions/HippieWordCompletionHandler.java
@@ -305,7 +305,7 @@ public class HippieWordCompletionHandler implements CodeInsightActionHandler {
 
     final CompletionData data = new CompletionData();
     
-    processWords(editor, offset - 1, new TokenProcessor() {
+    processWords(editor, Math.max(offset - 1, 0), new TokenProcessor() {
       @Override
       public boolean processToken(int start, int end) {
         if (start > offset) {