bug#60338: [PATCH] Add option to present server changes as diffs

[Eli Zaretskii]

> From: Philip Kaludercic <philipk@posteo.net>
> Cc: 60338@debbugs.gnu.org,  joaotavora@gmail.com
> Date: Mon, 12 Jun 2023 12:35:09 +0000
> 
> Eli Zaretskii <eliz@gnu.org> writes:
> 
> > Isn't there a better way of presenting the edits in human-readable
> > form than apply them and then run Diff?  What format is used by the
> > server itself to send the edits?
> 
> The server sends a JSON message.  Here is an example from a little toy
> project of mine in C, where I intentionally uncommented a #include
> directive:

And we cannot generate the Diff format from this?

> > Besides, this assumes the 'diff' command is available, which is not
> > portable -- one more reason not to go that way, or at leas provide an
> > alternative.
> 
> I am personally fond of this approach, because I get a regular text
> buffer that I can store or send someone.  The fact that diff is not
> available everywhere (even though I would guess any system with a
> language server /should/ have diff installed), is an argument against
> enabling this behaviour by default, not against providing this interface.

What do we suggest to people who don't have Diff, though?  Nothing?