You could use `format_source="split_params|input"` on https://github.com/bgruening/galaxytools/blob/master/tools/text_processing/split_file_to_collection/split_file_to_collection.xml#L205 and remove `format="fastq"/` (or use `__name_and_ext__` as the pattern).
You could use
format_source="split_params|input"on https://github.com/bgruening/galaxytools/blob/master/tools/text_processing/split_file_to_collection/split_file_to_collection.xml#L205 and removeformat="fastq"/(or use__name_and_ext__as the pattern).