I have observed a weird issue with button-lock and org-mode. It is reported in detail here: https://github.com/rolandwalker/button-lock/issues/9 The gist is if I use button-lock and try to open the repl of a python source block, the repl is read-only. But without button-lock it works fine. I have tracked this down to the line: (set (make-local-variable 'comint-prompt-read-only) t) in the inferior-python-mode call. Up to this line, the repl is interactive, but after that line, when button-lock has been used, the repl becomes read-only. I am baffled on how to even proceed with debugging. Any ideas? John ----------------------------------- Professor John Kitchin Doherty Hall A207F Department of Chemical Engineering Carnegie Mellon University Pittsburgh, PA 15213 412-268-7803 @johnkitchin http://kitchingroup.cheme.cmu.edu