Up.follow.rev: def of ezx@1.11.0.0
Import: import ezx@1.11.0.0/src/lock/up.bend as Up
Lines 483-487 of ezx@1.11.0.0/src/lock/up.bend: https://jend.leeeet.dev/read.txt?path=ezx@1.11.0.0/src/lock/up.bend&start_line=483&end_line=487

import Base

# the commit the rows name for a ref. A ref the remote does not have is a
# mistake worth naming.
def follow.rev(+rev: String, +url: String, +ref: String) -> Tip:
  Bool.pick(Tip, String.is_empty(rev), TipNo{"ez: " ++ url ++ " has no ref named " ++ ref},
    At{rev, ref, ""})

Uses (5):
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Bool.pick
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=String
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=String.append
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=String.is_empty
  https://jend.leeeet.dev/definition.txt?path=ezx@1.11.0.0/src/lock/up.bend&name=Tip