Up.forward.rev: def of ezx@1.11.0.0
Import: import ezx@1.11.0.0/src/lock/up.bend as Up
Lines 510-513 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=510&end_line=513

import Base

# a remote with no HEAD is not one an upgrade can move
def forward.rev(+rev: String, branch: String, +url: String) -> Tip:
  Bool.pick(Tip, String.is_empty(rev), TipNo{"ez: " ++ url ++ " has no HEAD"},
    At{rev, "", branch})

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