Re: Lisp Api and backward compatibility

[Eli Zaretskii <eliz@gnu.org>]

> Cc: emacs-devel@gnu.org
> From: Sameer Rahmani <lxsameer@gnu.org>
> Date: Fri, 12 Apr 2019 21:28:41 +0100
> 
> I picked up a task to change `desktop.el` to be able to save/read 
> desktops with a name ( basically writes the desktop in to a file under a 
> given name and later read from it). As you already know the 
> `desktop-save` fn for example gets directory name as the first argument 
> following by several optional args. So I was thinking to either:
> 
> 1) Add a new optional arg called filename and ask the desktop name from 
> user in interactive.
> 
> 2) don't add anything to the function signature and `read-string` it in 
> the function body.

The function desktop-save is also a command, so we will need to devise
a way to let the user specify the name interactively.  And the same
for desktop-read.

I didn't think about this too much, but maybe a separate command,
called desktop-save-named, say, would be a better alternative.