Edited file according to Chris's requests

Author: GalKepler

nipype/interfaces/mrtrix3/preprocess.py

@@ -226,14 +226,20 @@ class DWIBiasCorrect(MRTrix3Base):
  >>> bias_correct.inputs.in_file = 'dwi.mif'
  >>> bias_correct.inputs.use_ants = True
  >>> bias_correct.cmdline
- 'dwibiascorrect -ants dwi.mif dwi_biascorr.mif'
+ 'dwibiascorrect ants dwi.mif dwi_biascorr.mif'
  >>> bias_correct.run() # doctest: +SKIP
  """
 
  _cmd = "dwibiascorrect"
  input_spec = DWIBiasCorrectInputSpec
  output_spec = DWIBiasCorrectOutputSpec
-
+ def _format_arg(self, name, trait_spec, value):
+ if name in ("use_ants", "use_fsl"):
+ ver = self.version
+ # Changed in version 3.0, after release candidates
+ if ver is not None and (ver[0] < "3" or ver.startswith("3.0_RC")):
+ return f"-{trait_spec.argstr}"
+ super()._format_arg(name, trait_spec, value)
 
 class ResponseSDInputSpec(MRTrix3BaseInputSpec):
  algorithm = traits.Enum(