Todd Gamblin b5071312c4 spack spec: no extra newline with --yaml; error with no specs ...

- `spack spec` now returns an error if given no specs

- removed superfluous trailing newline from `spack spec --yaml` output
  (only one newline now)

2018-08-03 15:18:34 -05:00

..

spack

spack spec: no extra newline with --yaml; error with no specs

2018-08-03 15:18:34 -05:00