[PATCH v4 4/4] gdb/doc: document '+' argument for 'list' command

[Matt Rice]

On Thu, Jul 13, 2023 at 5:36 PM Keith Seitz via Gdb-patches
<gdb-patches@sourceware.org> wrote:
>
> On 7/13/23 03:24, Bruno Larsen via Gdb-patches wrote:
>
> > diff --git a/gdb/doc/gdb.texinfo b/gdb/doc/gdb.texinfo
> > index 20c9b24400d..cd86da50f46 100644
> > --- a/gdb/doc/gdb.texinfo
> > +++ b/gdb/doc/gdb.texinfo
> > @@ -9148,6 +9148,9 @@ Stack}), this prints lines centered around that line.  If no
> >   @code{list} command has been used and no solitary line was printed,
> >   it prints the lines around the function @code{main}.
> >
> > +@item list +
> > +Same as using with no arguments.
> > +
> >   @item list -
> >   Print lines just before the lines last printed.
> >
>
> Grepping gdb.texinfo for "list +" definitely has a result:
>
> $ grep 'list +' gdb.texinfo
> @item list +
> list +[NSText initialize]
>
> This is from the same "Printing Source Line" section of the Manual
> that your patch touches. This is the blurb which gives a "complete
> description of the possible arguments for list".

I guess it is worth noting that this usage of 'list +[NSText
initialize]', is completely different than the first match '@item list
+' Keith refers to,
it comes from the objective-c section and in that case the '+'
signifies that the initialize method is a class method.
That one comes from the section "Method Names in Commands", an awkward
bit of ambiguity. But it took me a bit to figure out what you
were actually referring to, not seeing the NSText match in that section.

> What your patch does is actually add "list +" to the "most commonly used"
> blurb at the top of the section.
>
> I'm not sure I really find that compelling, given that it is essentially
> synonymous with just repeating/hitting enter, documented just above it.
> To be clear, I am not entirely against it. I'll leave it to the documentation
> experts.
>
> [And I see we have a near mid-air collision with an Approved-by. So ignore me!]
>
> Keith
>