> > I wonder if the "problem" comes from me doing things in a non-lispy > > fashion (I am completely new to lisp). Thus > > notmuch-show-part-button-default-action is a variable that gets passed > > around rather than a function. > > Sorry, I should have looked at the bigger context in this patch. I > think Jameson was implying that notmuch-show-part-button-default > should change to > > (defun notmuch-show-part-button-default (&optional button) > (interactive) > (funcall notmuch-show-part-button-default-action button)) > > I would go one step further and say that each action should probably > be a separate function. That is, break notmuch-show-part-action into > separate functions and simply invoke the appropriate function, rather > than performing a fixed data dispatch. This would be more flexible > and Lispy. It may be that your approach works out better, but I'd at > least give this a shot. I am happy to make that change. My original patch in the summer was more like that: id:"CALUdzSWAto+4mCUOOMk+8vFs+Pog-xUma6u-Aqx2M6-sbyQROg@mail.gmail.com" Is that more what you had in mind? (Only in broad terms: Obviously I would need to add in the customization and default function etc). I decided that I didn't like the code duplication (but I am completely new to lisp) which is why I changed it for this submission. Best wishes Mark