I don't know if this is possible and if there is demand but:

Current line breaking behavior

Want to be able to customize it to

or maybe even

Bonus if this behavior can be changed depending on the context (e.g. in a paragraph vs table cell) and if rules for trimming line breaks in certain contexts can be defined.

Doing this in Typst code right now is almost impossible, mostly because

• show rules like #show regex("\\s"): white_char => ... never capture line breaks in the source
• \n gets compiled to [ ] (making it indistinguishable from many other things that generate [ ])
• the content tree is currently not well traverseable and mutable.