Sounds like https://ipn.caerwyn.com/2009/05/lab-95-acme-side-by-side-diff.html
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What is “Replace”?
I think diff is quite good by itself. Even Gitlab doesn’t seem to give a split
view in merge requests.
Also see “Balance the benefit of a feature against its overall cost” in Pike’s
eloquent Window Systems Should Be Transparent.
You can go the “right place” by selecting the
I'm trying to figure out if there's an easy way to use Newcol within
an acme window to show things side-by-side. It would be handy when
comparing diffs. I think it will require code change.
Intuition-wise, it seems like some sort of Newcol+"Replace" (or
"Split"+"Replace"?) could be used to do this
