bug#65902: 29.0.92; emacsclient-mail.desktop fails due to complicated escaping

[Jim Porter]

On 9/13/2023 1:00 PM, Spencer Baugh wrote:
> It doesn't work with --alternate-editor=emacs, but I think that is OK.
> I think the alternate-editor='' configuration is far more common, and
> that works just fine.

In that case, I think the benefits of "emacs --apply" are somewhat 
reduced, but it does still make some cases a bit easier. 
("emacs-mail.desktop" could use it, which would let us simplify the 
implementation of 'message-mailto' a little.)

Still, if we dropped "emacs --apply" I wouldn't stamp my feet about it. 
The main benefit is for emacsclient anyway, where it seems we have 
consensus.