MRG: If _check_fname() cannot find a file, display the path in quotation marks to help spot accidental trailing spaces #11718
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We had a user on the forum who got an error message about a missing file that didn't actually seem to be missing. Turns out a trailing space was present in the search path, which was hard to spot.
https://mne.discourse.group/t/the-source-estimate-is-not-displayed-i-think-it-may-be-a-bug/6993/4
Here, I'm changing the
FileNotFoundErrormessage to put the path in quotation marks to help identify such issues quicker in the future.