From 5acc1a1bd21e7aafb3bd5066969af6a7ddfd547b Mon Sep 17 00:00:00 2001
From: Sheetal Nandi <shkamat@microsoft.com>
Date: Thu, 6 Nov 2014 19:51:00 -0800
Subject: [PATCH] Fix the crash in completion entry by fixing the unknown token
 check

Fixes #1069
---
 src/services/utilities.ts                      | 5 ++++-
 tests/cases/fourslash/completionAfterAtChar.ts | 6 ++++++
 2 files changed, 10 insertions(+), 1 deletion(-)
 create mode 100644 tests/cases/fourslash/completionAfterAtChar.ts

diff --git a/src/services/utilities.ts b/src/services/utilities.ts
index 8dcd06f5621..88e3601b610 100644
--- a/src/services/utilities.ts
+++ b/src/services/utilities.ts
@@ -224,7 +224,10 @@ module ts {
             return nodeHasTokens((<ExpressionStatement>n).expression);
         }
 
-        if (n.kind === SyntaxKind.EndOfFileToken || n.kind === SyntaxKind.OmittedExpression || n.kind === SyntaxKind.Missing) {
+        if (n.kind === SyntaxKind.EndOfFileToken ||
+            n.kind === SyntaxKind.OmittedExpression ||
+            n.kind === SyntaxKind.Missing ||
+            n.kind === SyntaxKind.Unknown) {
             return false;
         }
 
diff --git a/tests/cases/fourslash/completionAfterAtChar.ts b/tests/cases/fourslash/completionAfterAtChar.ts
new file mode 100644
index 00000000000..4f3581cd483
--- /dev/null
+++ b/tests/cases/fourslash/completionAfterAtChar.ts
@@ -0,0 +1,6 @@
+/// <reference path='fourslash.ts'/>
+
+////@a/**/
+
+goTo.marker();
+verify.not.completionListIsEmpty();
\ No newline at end of file