tree 69f2ab637108682342619f436bcfdb530fb4782b
parent 328a43518244b970e1765eca78060bfeb265a584
author Johannes Schindelin <johannes.schindelin@gmx.de> 1540396572 -0700
committer Junio C Hamano <gitster@pobox.com> 1540439967 +0900

shallow: offer to prune only non-existing entries

The `prune_shallow()` function wants a full reachability check to be
completed before it goes to work, to ensure that all unreachable entries
are removed from the shallow file.

However, in the upcoming patch we do not even want to go that far. We
really only need to remove entries corresponding to pruned commits, i.e.
to commits that no longer exist.

Let's support that use case.

Rather than extending the signature of `prune_shallow()` to accept
another Boolean, let's turn it into a bit field and declare constants,
for readability.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>