Inconsistencies in handling command flags: `--flag=value` different than `--flag value`

[Jameson Graef Rollins]

On Wed, Apr 29 2020, David Bremner <david at tethera.net> wrote:
> I guess I'm a bit leery of removing UI features that presumably at least
> some people rely on. It's pretty upsetting to have sofware break one's
> muscle memory.

I dare say there are few people that have muscle memory for the notmuch
command line (especially for notmuch show), and fewer that aren't
themselves developers...