invalid goto syntax

jedi/api.py

@@ -389,9 +389,9 @@ class Script(object):
             defs, search_name = evaluate.goto(stmt)
             definitions = follow_inexistent_imports(defs)
             if isinstance(user_stmt, pr.Statement):
-                call = user_stmt.get_commands()[0]
-                if not isinstance(call, (str, unicode)) and \
-                   call.start_pos > self.pos:
+                c = user_stmt.get_commands()
+                if c and not isinstance(c[0], (str, unicode)) and \
+                   c[0].start_pos > self.pos:
                     # The cursor must be after the start, otherwise the
                     # statement is just an assignee.
                     definitions = [user_stmt]

jedi/evaluate.py

@@ -795,6 +795,8 @@ def filter_private_variable(scope, call_scope, var_name):
 def goto(stmt, call_path=None):
     if call_path is None:
         commands = stmt.get_commands()
+        if len(commands) == 0:
+            return [], ''
         # Only the first command is important, the rest should basically not
         # happen except in broken code (e.g. docstrings that aren't code).
         call = commands[0]

test/completion/invalid.py

@@ -119,4 +119,11 @@ def asdf(a or b): # multiple param names
 #? int()
 asdf(2)
 
+# -----------------
+# goto
+# -----------------
+
+#! []
+as
+
 import datetime as