FIX: Warn on set option if no value is set
@@ -94,6 +94,7 @@ class Config(Base):
# XXX 0.14: Disable extension_initial_dot branching
extension_initial_dot = get_option('extension_initial_dot')
if config == "bids" and not extension_initial_dot:
+ if extension_initial_dot is None:
warnings.warn("The 'extension' entity currently excludes the leading dot ('.'). "
"As of version 0.14.0, it will include the leading dot. To suppress "
"this warning and include the leading dot, use "
