Setimp.fmt.ext: def of cswap-bend-cli@0.1.0.0
Import: import cswap-bend-cli@0.1.0.0/setimp.bend as Setimp
Lines 61-66 of cswap-bend-cli@0.1.0.0/setimp.bend: https://jend.leeeet.dev/read.txt?path=cswap-bend-cli@0.1.0.0/setimp.bend&start_line=61&end_line=66

import Base

def fmt.ext(m: Maybe<&2, String>, +path: String) -> Result<&2, &2, String, String>:
  match m:
    case Some{f}:
      Done{f}
    case None{}:
      Fail{"cannot tell the format of '" ++ path ++ "' from its extension; pass --format json|yaml|toon|csv"}

Uses (4):
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Maybe
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Result
  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