Multipart.unesc: def of bend-kit-multipart@0.3.0.0
Import: import bend-kit-multipart@0.3.0.0/multipart.bend as Multipart
Lines 163-165 of bend-kit-multipart@0.3.0.0/multipart.bend: https://jend.leeeet.dev/read.txt?path=bend-kit-multipart@0.3.0.0/multipart.bend&start_line=163&end_line=165

import Base

# Undoes esc, as the Fetch spec's form-data parser does. A literal "%22" in a name reads back as '"'.
def unesc(s: String) -> String:
  String.reverse(unesc.go(s, SNil{}))

Uses (3):
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=String
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=String.reverse
  https://jend.leeeet.dev/definition.txt?path=bend-kit-multipart@0.3.0.0/multipart.bend&name=unesc.go