How does one of these rules avoid show rule recursion?

Questions
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4

Okay I reproduce it this time. It looks like it’s exactly #5271 I mentioned above?
(I wanted to link #5140 in that post. But somehow, I pasted the wrong link #5271… I’m editing that post and keeping both links.)

Besides, you can put typst typc after ``` to make the code highlighted on this forum.