[BUG] regexp pattern not handled

[marcelzwiers]

Is there an existing issue for this?

• I have searched the existing issues

Operating system

• Linux
• Mac
• Windows

Operating system version

irrelevant

Platform

• MATLAB
• Octave

Platform version

bids-matlab version

v0.1.0dev

branch / commit number

I'm sorry to say so, but this is the most unfriendly issue form I have ever encountered. It looks fancy, but it is waaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaay too long and detailed/irrelevant.

Expected Behavior

All is ok when I query for files with no part-mag entity:

>> bids.query(BIDS,'data','part','', 'suffix','T1w')

ans =

  2×1 cell array

    {'C:\Users\marzwi\bidscointutorial\bids_ref\sub-001\anat\sub-001_acq-mprage_T1w.nii'}
    {'C:\Users\marzwi\bidscointutorial\bids_ref\sub-002\anat\sub-002_acq-mprage_T1w.nii'}

However, when I query for no or only mag (i.e. no phase) then it goes wrong:

>> bids.query(BIDS,'data','part','(mag)?', 'suffix','T1w')

ans =

  0×0 empty cell array

And it's not that the (somethinghere)? pattern is not working, as you can see here:

>> bids.query(BIDS,'data','acq','(mprage)?', 'suffix','T1w')

ans =

  2×1 cell array

    {'C:\Users\marzwi\bidscointutorial\bids_ref\sub-001\anat\sub-001_acq-mprage_T1w.nii'}
    {'C:\Users\marzwi\bidscointutorial\bids_ref\sub-002\anat\sub-002_acq-mprage_T1w.nii'}

Current Behavior

See above

Error message

Anything else?

No response