What about DECSTBM and DECLRMM?DECSTBM and DECLRMM allow you to set “margins” in the terminal and then “scroll” within those margins. DECSTBM is for vertical margins and DECLRMM is for horizontal ones.
Computer Science Programming Languages
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Implementers shouldn't need to jump through these hoops. When you find yourself needing to relax or bypass spec semantics just to achieve reasonable performance, that's a sign something is wrong with the spec itself. A well-designed streaming API should be efficient by default, not require each runtime to invent its own escape hatches.
从“通用的大脑”到“在垂类真干活的大脑”