bug#43165: [PATCH] Add load this file lisp function.

[Drew Adams <drew.adams@oracle.com>]

> Just do: `M-x load-file RET M-n RET'

I was going to say this yesterday, when I saw
the enhancement request.

Just do: `M-x load-file RET RET'.  No need for
`M-n'.  Of course, one needs to know this, to
do it.  I've been doing it forever.  Would I
want a key for it?  Not I.

But it's true that we have `kill-this-buffer'.

The reason we have `kill-this-buffer', I believe,
is just for a menu item (`Close': `<menu-bar>
<file> <kill-buffer>').  It makes little sense
to bind it to a keyboard key.  But someone could.

`load-file' is in the same boat, I think. There's
little use for a `load-this-file' command, in
terms of keyboard key bindings.  But I suppose
it could serve (like `Close') as a menu item.

Actually, there's a difference from `kill-buffer':
the risk of killing something unintended versus
the risk of loading something unintended.  Maybe
the same reason we show the default in the prompt,
for `kill-buffer'.

If you were to bind `kill-this-buffer' to a key,
and accidentally hit that key, bye-bye wrong
buffer, perhaps.  In a menu that's less likely
to happen.  For `load-this-file' there's less of
a "danger", if you accidentally try to load the
current file when you shouldn't.

I don't see a need for such a command, personally,
but about the same thing goes for `kill-this-buffer'.

Note, BTW, that we don't even bind `load-file'
by default.  It's not really a command that users
use every 10 minutes.

Personally, I'd say we don't need a `load-this-file'.
Just one opinion.