Jeff King <> writes:

> [1] The thing that made me think about this was making a version of
>     paint_down_to_common that could keep a separate color for each
>     source, rather than only PARENT1 and PARENT2. That would let us do
>     the "--contains" traversal in a breadth-first way, but calculate the
>     answer simultaneously for all sources (i.e., avoid the depth-first
>     "go to roots" problem that the current "tag --contains" has if you
>     do not use timestamp cutoffs).

Yes, show-branch operates independently of rev-list machinery, hence
can use full set of bits, but the full set of bits in a word is not
always sufficient and it can be helped greatly with such an unbound
set of bits machinery.

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