@qqmrichter you have a repl basically, and you don't use VimL (or lua), you record **macros**. Then you apply given macro to a given situation or combine them. I don't know if you have worked with human-generated data sets or data sets that are scraped using heuristics, and sadly I can't challenge you with data sets I regularly work with VIM macros with because they're secret. But I don't understand why can't you see that if a data set is made using heuristics, it can only be normalised heuristically, not algorithmically.