Cannot load spikeglx catGT output

[guptadivyansh]

When the filename contains 'tcat' as the trigger number, the parse_spikeglx_fname() function fails

The error below happens when the name of my file was 20230907_g0_tcat.imec0.ap. neo was actually called via SpikeInterface in this case.

File /opt/miniconda3/envs/ephys/lib/python3.10/site-packages/neo/rawio/spikeglxrawio.py:336, in parse_spikeglx_fname(fname)
    333             run_name, device, stream_kind = r[0]
    334             gate_num, trigger_num = None, None
--> 336 if gate_num is not None:
    337     gate_num = int(gate_num)
    338 if trigger_num is not None:
UnboundLocalError: local variable 'gate_num' referenced before assignment

I can see the regular expression in neo/rawio/spikeglxrawio.py that parses the filename expects only digits as the trigger number
r = re.findall(r'(\S*)_g(\d*)_t(\d*)\.(\S*).(ap|lf)', fname)
which explains why gate_num is not assigned later.

Might also make sense to pre-initalize gate_num and trigger_num to None, in case the parsing fails.

Environment:

• OS: Ubuntu Linux
• Python version - 3.10
• Neo version - 0.12.0

[guptadivyansh]

I discovered that I had the release version of neo, while the latest version has fixed this issue with more lenient regex. However the 'easier' regex wasn't working with .nidq files saved alongside the imec data. I have opened a pull request for the same here: #1362