Proposed test cases (%_, %%. %-)

description: Macro mania
comment: >-
  DNS supports any octet. SPF directly supports printable ASCII
  and space, indirectly any octet, but no dots within labels.
tests:
  outer-space:
    description: >-
      SPF supports spaces in DNS labels with a macro.
    spec: 8.1/6
    helo: you get mail from my pc
    host: 1.2.3.4
    mailfrom: "don't panic"@outer-space.test
    result: pass
  percent-hack:
    description: >-
      SPF supports percent in DNS labels with a macro.
    spec: 8.1/6
    helo: this is no IDNA or SMTP test
    host: 1.2.3.4 
    mailfrom: [email protected]
    result: pass
  inner-space:
    description: >-
      There is also a percent-encode space, go figure.
    spec: 8.1/6
    helo: inner%space.xn--zckzah
    host: 1.2.3.5
    mailfrom: ""
    result: pass
zonedata:
  outer-space.test:
    - SPF: v=spf1 include:inner%_space.test -all
  inner space.test:
    - A: 1.2.3.4
  outer-space.xn--zckzah:
    - SPF: v=spf1 include:inner%%space.xn--zckzah -all
  inner%space.xn--zckzah:
    - A: 1.2.3.4
    - SPF: v=spf1 include:inner%-space.xn--zckzah -all
  inner%20space.xn--zckzah:
    - A: 1.2.3.5