It is related to bug#1458. below should not be parsed successfully:
1. abc=
2. =abc
Comments: Fixed in changeset 8d87c8682c892c82732748adbdd45ed65c8bbf4a
1. abc=
2. =abc
Comments: Fixed in changeset 8d87c8682c892c82732748adbdd45ed65c8bbf4a