How tuo upl a file to gh.gist? https://stackoverflow.com/questions/39174728/add-another-file-to-existing-github-gist thats not the answer ...
also not take a ipynb file c&p to gist: this is the wirtten Filename in Gist:
and this the corrupted result, no warning no message,
https://gist.github.com/pflegende/cf8615f8a75a9ae692003d499211ff75#file-xppexpl-ipynb
the extension was modified from by hand inserted as xppExpl.ipynb to a blob without extension ... :(
no ipynb files alowed or "supported" on gist ...
:(