How to save a list of show rules and use them?

Questions
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4

The best solutions for applying a dynamic amount of show rules are listed here: How can I create show rules in a loop? - #2 by SillyFreak

Your example is almost correct, but you forgot to update the it variable on each iteration to also hold previous show rules. (As is, you’re simply making a copy of your text where each copy only applies exactly one of the show rules.)

Here’s how a fixed version might look like:

#let en2ch_point_dict = (
  "\\.\\s*": "。",
  "\\,\\s*": "，"
)

#let auto_chinese_point(doc) = {
  show par: it => {
    show text: it => {
      for (pat, replacement) in en2ch_point_dict {
        // New 'it' with one more show rule each time
        it = {
          show regex(pat): replacement
          it
        }
      }
      it
    }
    it
  }
  doc
}
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