Proper handling of empty code cells.

abingham · Apr 22, 2017 · ede7c0b · ede7c0b
1 parent d2985d3
commit ede7c0b
Showing 1 changed file with 2 additions and 2 deletions.
diff --git a/elm_kernel/kernel.py b/elm_kernel/kernel.py
@@ -95,8 +95,8 @@ def _compile(self, code):
     @property
     def _should_compile(self):
         assert self._code, "Should not be querying for compilation with no code!"
-        last_line = deque(io.StringIO(self._code[-1]), 1)[0]
-        return last_line == '-- compile-code'
+        lines = deque(io.StringIO(self._code[-1]), 1)
+        return lines[0] == '-- compile-code' if lines else False
 
     def _send_error_result(self, msg):
         """Send an error message to the client.