At 2018-05-03T15:16:17+01:00, Aaron Ecay wrote: > In principle, you are correct. However: > >> I wonder if something like >> >> ------------------------------------------------------------ >> (defun org-babel-do-load-languages (languages) > > If we change the arity of the function in this way, usersʼ > configurations will break. We could deprecate the old arity-2 calling > convention, but continue to support it (and give warnings when it is > used) long enough for users to change their configurations. > > Is it worth it though? Why not just add a docstring to the existing > function that explains its calling convention and call it a day?
This is a good solution. >> (defcustom org-babel-load-languages '((emacs-lisp . t)) >> ... >> :set #'(lambda (sym value) >> (ignore sym) > > You can achieve the same by naming the argument _sym without calling > ignore. Underscore-prefixed names are better (in general) than > ignore, since the byte compiler will warn if you try to access their > value (whereas, AFAIK, there is no warning if you access an ignore-d > variable, and thus ignore may be mistakenly misleading. Since the > function is so short in this case, the issue doesnʼt really arise). Thanks for that explanation too, I didn't know that. Regards, Raghu. -- N. Raghavendra <ra...@hri.res.in>, http://www.retrotexts.net/ Harish-Chandra Research Institute, http://www.hri.res.in/
