All right, I have a very weird issue here: `isinstance(ch_name, list)` gives false even though I pass a list: `["MEG 2332", "MEG 2331"]` in mne_compute_proj_eog.py. I tried removing type="string" in `parser.add_option()` but that doesn't seem to make a difference. If I do `print ch_name` in eog.py, I get `[MEG 2332,MEG 2331]` as output which looks like the list I passed as argument. Any idea what could be the issue? Is there some kind of typecasting somewhere in the code that I am missing?