* scribo/io/text_boxes/save.hh,
	* scribo/primitive/extract/components.hh,
	* scribo/primitive/link/with_single_right_link.hh,
	* scribo/text/recognition.hh,
	* scribo/toolchain/content_in_doc.hh,
	* scribo/toolchain/content_in_hdoc.hh,
	* scribo/toolchain/text_in_doc.hh,
	* scribo/toolchain/text_in_doc_preprocess.hh,
	* scribo/toolchain/text_in_picture.hh:
	Do not provide default arguments twice.