With subcommand handling for external commands we can now hide the
implementation detail of emacs-mua being a separate notmuch-emacs-mua
script.
SYNOPSIS
========
-**notmuch-emacs-mua** [options ...] [<to-address> ... | <mailto-url>]
+**notmuch** **emacs-mua** [options ...] [<to-address> ... | <mailto-url>]
DESCRIPTION
===========
Start composing an email in the Notmuch Emacs UI with the specified
subject, recipients, and message body, or mailto: URL.
-Supported options for **notmuch-emacs-mua** include
+Supported options for **emacs-mua** include
``-h, --help``
Display help.