*** spacefrogg [2026-08-20 17:01]:
>unknown -> source: redo is called on <A>, has no prior knowledge about it,
>and <A> exists.
>unknown -> target: redo is called on <A>, has no prior knowledge about it,
><A> doesn't exist and a .do file to produce <A> can be found.

By the way, DJB's http://cr.yp.to/redo/atomic.html actually hints about
that behaviour too:

    [...]
    When redo is asked to create a file that it hasn't heard of before,
    it presumes that the file is a source file if it exists, or a target
    file otherwise. In the second case (new target), redo immediately
    saves this decision to disk, so that its subsequent creation of the
    target doesn't change the decision.

-- 
 * Origin: Stargrave's homepage http://www.stargrave.org/