On Mon, Feb 08 2016, David Edmondson wrote: > On Mon, Feb 08 2016, David Edmondson wrote: >> On Fri, Jan 15 2016, Daniel Kahn Gillmor wrote: >>> So where is the case-insensitive lookup happening? Is this a bug in >>> mml-mode, or in notmuch-emacs? >> >> It's caused by behaviour in mml2015.el (hence upstream). >> >> `mml2015-epg-check-user-id' uses `equal' to compare the recipient from >> the composition buffer with the addresses from the matching key. >> >> The simplest way to get the desired behaviour would be to `downcase' >> both strings before comparing. > > Reported as bug#22603 in emacs. Fixed in the emacs-25 branch.