Handle completing "-" and "--".

llvm-svn: 106784
diff --git a/lldb/source/Interpreter/CommandObject.cpp b/lldb/source/Interpreter/CommandObject.cpp
index 384c03a..2813ac1 100644
--- a/lldb/source/Interpreter/CommandObject.cpp
+++ b/lldb/source/Interpreter/CommandObject.cpp
@@ -333,7 +333,7 @@
 
             input.AppendArgument ("<FAKE-VALUE>");
 
-            input.ParseArgsForCompletion (*cur_options, opt_element_vector);
+            input.ParseArgsForCompletion (*cur_options, opt_element_vector, cursor_index);
 
             input.DeleteArgumentAtIndex(input.GetArgumentCount() - 1);