Format.RulesSourceRules are configured in the configuration file. Default values are provided in Configuration.
type t = {line_same : Rule.t;line_prev : Rule.t;line_next : Rule.t;line_unified : Rule.t;word_same_prev : Rule.t;word_same_next : Rule.t;word_same_unified : Rule.t;word_same_unified_in_move : Rule.t;word_prev : Rule.t;word_next : Rule.t;hunk : Rule.t;header_prev : Rule.t;header_next : Rule.t;moved_from_prev : Rule.t;moved_to_next : Rule.t;removed_in_move : Rule.t;added_in_move : Rule.t;line_unified_in_move : Rule.t;}