Re: Possible to make gnus handle mailto URLs with cc, subject and body?

[Steinar Bang <sb@dod.no>]

Thanks Adam!

I will adopt your approach (or something very similar) on GNU/linux and
other unixoid systems.

But now I have to figure out if an approach can be used in windows as
well?  What happens when a mailto URL is clicked on window?

This URL shows how to change the email client used to an arbitrary
program:
 https://support.procore.com/faq/how-do-i-change-my-web-browsers-default-email-client-for-mailto-links

But what should that arbitrary program look like? How are arguments
transferred to the program?

Hm... from what I found here https://stackoverflow.com/a/1812 it looks
like it will be run as: 
 <full-path-to-executable> <mailto-URL>

So that could be handled with something similar to Adam's shell script
except probably not bourne shell?  And how well does emacsclient work on
window?

I tried it from a cmd.exe window and it seems to work, both the command
	C:\ProgramFiles\emacs-26.3-i686\bin\emacsclient.exe .emacs
and the command
	C:\ProgramFiles\emacs-26.3-i686\bin\emacsclientw.exe .emacs
opened up .emacs in a window, that could be closed with 'C-x #'

(what's the difference between emacsclient.exe and emacsclientw.exe,
btw?  Does one pop up a cmd window and one not?  Yep, emacsclientw.exe
does (probably) not open a cmd window if I interpret this correctly:
https://www.gnu.org/software/emacs/manual/html_node/emacs/Windows-Startup.html) 

I've created a c:\ProgramFiles\emacs-26.3-i686\bin\mailto-handler.bat
file, with the following contents:
C:\ProgramFiles\emacs-26.3-i686\bin\emacsclientw.exe -c --eval "(browse-url-mail \"%1\" nil)"

But testing it out turned to be harder.  Neither vivaldi nor chrome seem
to have a way of setting a handler right now.  There is no setting that
looks right and chrome://settings/handlers just opens a page where one
can switch off webpages offering to become handler.

Because appearently that's the preferred way to handle email these days:
webmail

Oh well!