Got rid of returning empty range list in position strategies (in places where they depend on syntax errors).

compiler/frontend/src/org/jetbrains/jet/lang/diagnostics/Errors.java

@@ -288,7 +288,6 @@ public interface Errors {
         @NotNull
         @Override
         public List<TextRange> mark(@NotNull JetWhenExpression element) {
-            if (hasSyntaxError(element)) return Collections.emptyList();
             return markElement(element.getWhenKeywordElement());
         }
     });

compiler/frontend/src/org/jetbrains/jet/lang/diagnostics/PositioningStrategies.java

@@ -74,14 +74,11 @@ public class PositioningStrategies {
         @NotNull
         @Override
         public List<TextRange> mark(@NotNull PsiNameIdentifierOwner element) {
-            if (element.getLastChild() instanceof PsiErrorElement) {
-                return Collections.emptyList();
-            }
             PsiElement nameIdentifier = element.getNameIdentifier();
             if (nameIdentifier != null) {
                 return markElement(nameIdentifier);
             }
-            return Collections.emptyList();
+            return markElement(element);
         }
     };