gc.sh: factor out new get_worktrees_friends function
commit5540c8937b1a38107e9757336a8e64b36112c724
authorKyle J. McKay <mackyle@gmail.com>
Fri, 11 Oct 2019 09:51:53 +0000 (11 02:51 -0700)
committerKyle J. McKay <mackyle@gmail.com>
Fri, 11 Oct 2019 09:51:53 +0000 (11 02:51 -0700)
tree4d040a9430c35afbf880885350a8f77a2d3ae0f9
parentcb5d9a7671f92af6a9823bc11add2748eddd922c
gc.sh: factor out new get_worktrees_friends function

The compute_extra_reachables function uses this logic to extract
any "friends" from within worktrees.

Move it to its own new "get_worktrees_friends" function so it
can be reused without duplication.

Signed-off-by: Kyle J. McKay <mackyle@gmail.com>
jobd/gc.sh