Fix BTi handling in mne-bids

[sappelhoff]

• xref: Problems with conversion of BTI datasets #1155
• xref: ENH: Add pdf_fname to RawBTi._raw_extras mne-python#11851

I think BTI copying was broken all this time in MNE-Python, I found several things that don't make any sense, and seemingly we never even had a test for this.

I now introduced a test. this code will only work with mne >= 1.5

---

@nugenta we need your help to test this fix.

Can you please:

1. install the current development version of mne
2. install the fix from this branch? see instructions for installing from a branch here: only copy BTI headshape file if present #1158 (comment)

and then run your pipeline?

Are all your issues fixed?

[codecov]

Codecov Report

Merging #1160 (6e4f551) into main (0b06562) will increase coverage by 0.00%.
The diff coverage is 100.00%.

❗ Current head 6e4f551 differs from pull request most recent head 3a9d522. Consider uploading reports for the commit 3a9d522 to get more accurate results

@@           Coverage Diff           @@
##             main    #1160   +/-   ##
=======================================
  Coverage   97.62%   97.63%           
=======================================
  Files          40       40           
  Lines        8625     8655   +30     
=======================================
+ Hits         8420     8450   +30     
  Misses        205      205           

Files Changed	Coverage Δ
mne_bids/path.py	97.38% <ø> (ø)
mne_bids/tests/test_path.py	99.85% <ø> (ø)
mne_bids/copyfiles.py	97.76% <100.00%> (+0.05%)	⬆️
mne_bids/read.py	95.89% <100.00%> (+0.05%)	⬆️
mne_bids/tests/test_copyfiles.py	98.40% <100.00%> (+0.08%)	⬆️
mne_bids/tests/test_write.py	99.50% <100.00%> (+<0.01%)	⬆️
mne_bids/write.py	97.40% <100.00%> (ø)

[nugenta]

Hi - sorry for only getting to this now. Yes, installing the latest devel versions of both mne and mne-bids have solved the BTi copying problems. Thanks!

[sappelhoff]

Hi - sorry for only getting to this now. Yes, installing the latest devel versions of both mne and mne-bids have solved the BTi copying problems. Thanks!

no worries, thanks @nugenta ... but did you install mne-bids from this branch? ... or just the mne-bids development version?

anyhow, I am going to merge this now. Please update your mne-bids development version and tell us if it still works -- thanks!