Equinox generates <<loops>> when using any command-line option

[asr]

For example, given the file refl.fof:

fof(refl, conjecture, ! [X] : X = X).

• Works:

  $ equinox refl.fof
  Equinox, version 6.0.1alpha, 2011-12-07, pre-release.
  +++ PROBLEM: refl.fof
  Reading 'refl.fof' ... OK
  +++ SOLVING: refl.fof
  #elt|#instances
  +++ RESULT: Theorem

• Fails:

  $ equinox --time 10 refl.fof
  Equinox, version 6.0.1alpha, 2011-12-07, pre-release.
  equinox: <<loop>>

Even the --help option fails:

$ equinox --help
Equinox, version 6.0.1alpha, 2011-12-07, pre-release.
Usage: equinox <option>* <file>*

<file> should be in TPTP format.

<option> can be any of the following:

equinox: <<loop>>

Tested with GHC 7.10.3 and 8.0.1.

CCing @jonaprieto

[nick8325]

I had actually fixed this locally and forgotten to push it!

[asr]

Thanks!