Web.loopback.port: def of ezmcp@0.1.0.0
Import: import ezmcp@0.1.0.0/src/web.bend as Web
Lines 86-92 of ezmcp@0.1.0.0/src/web.bend: https://jend.leeeet.dev/read.txt?path=ezmcp@0.1.0.0/src/web.bend&start_line=86&end_line=92

import Base

# after the host: nothing, or a colon and a port's digits
def loopback.port(rest: String) -> Bool:
  match rest:
    case SNil{}:
      True{}
    case SCon{head, tail}:
      loopback.colon(tail, Char.is_eq(head, ':'))

Uses (5):
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Bool
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Char
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Char.is_eq
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=String
  https://jend.leeeet.dev/definition.txt?path=ezmcp@0.1.0.0/src/web.bend&name=loopback.colon