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2 changes: 2 additions & 0 deletions pydocx/openxml/wordprocessing/simple_field.py
Original file line number Diff line number Diff line change
Expand Up @@ -38,6 +38,8 @@ def _parse_instr_arg_string_to_args(self, arg_string):
return re.findall(r'\s*(?:"([^"]+)"|([^\s]+))+', arg_string)

def parse_instr(self):
if self.instr is None:
return
m = self._parse_instr_into_field_type_and_arg_string()
if not m:
return
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4 changes: 4 additions & 0 deletions tests/export/html/test_simple_field.py
Original file line number Diff line number Diff line change
Expand Up @@ -202,6 +202,10 @@ def parse(self, instr):
field = SimpleField(instr=instr)
return field.parse_instr()

def test_with_None_instr_returns_None(self):
result = self.parse(None)
self.assertEqual(result, None)

def test_with_blank_instr_returns_None(self):
result = self.parse('')
self.assertEqual(result, None)
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