progress-back-to-back ... 
  - Foo 1
  - Foo 2
  - Foo 3
progress-back-to-back ... ok
all 1 tests successful
---
  % cat .stderr
  [btest] -- Foo 1
  [btest] -- Foo 1
  [btest] -- Foo 2
  [btest] -- Foo 2
  [btest] -- Foo 3
  [btest] -- Foo 3

all 1 tests successful
---
progress-back-to-back ...
  > bash %INPUT >&2
  - Foo 1
  - Foo 2
  - Foo 3
... progress-back-to-back ok
all 1 tests successful
---
---
