sdiff(1) on OpenBSD
The text 9d3ba3ae8d66, as OpenBSD 7.1, OpenBSD 7.0, OpenBSD 6.9, OpenBSD 6.8, OpenBSD 6.7, OpenBSD 6.6, OpenBSD 6.5, OpenBSD 6.4, OpenBSD 6.3 shipped it.
side-by-side diff
Flags it lists
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-I -
-W -
-a -
-b -
-d -
-i -
-l -
-o -
-s -
-t -
-w