Fork of lines.love without drawings; useful starting point for further forks

start trimming down plan_draw when editing a pane

It seems clear that a lot of my GC work and sluggishness comes from there. Let's specialize a function just for this one call site.

To start, hoist the call inside a branch so we can start to focus on one particular situation.

Created by  Kartik K. Agaram  on December 9, 2022
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