Auto select completion proposal

idea/src/META-INF/plugin.xml

@@ -68,6 +68,7 @@
                               implementationClass="org.jetbrains.jet.plugin.completion.JetCompletionContributor"/>
 
       <completion.contributor language="jet" implementationClass="org.jetbrains.jet.plugin.completion.GlobalMemberCompletionContributor"/>
+      <completion.confidence language="jet" implementationClass="org.jetbrains.jet.plugin.completion.JetCompletionConfidence"/>
 
       <psi.referenceContributor language="jet" order="after JetCompletionContributor" implementation="org.jetbrains.jet.plugin.references.JetReferenceContributor"/>
 

idea/src/org/jetbrains/jet/plugin/completion/JetCompletionConfidence.java

@@ -0,0 +1,18 @@
+package org.jetbrains.jet.plugin.completion;
+
+import com.intellij.codeInsight.completion.CompletionConfidence;
+import com.intellij.codeInsight.completion.CompletionParameters;
+import com.intellij.util.ThreeState;
+import org.jetbrains.annotations.NotNull;
+
+/**
+ * @author Nikolay Krasko
+ */
+public class JetCompletionConfidence extends CompletionConfidence {
+
+    @NotNull
+    @Override
+    public ThreeState shouldFocusLookup(@NotNull CompletionParameters parameters) {
+        return ThreeState.YES;
+    }
+}