Re: -2 in numeric and string capabilities

[Florian Weimer]

* Thomas Dickey:

>> I see it in Debian's ncurses-term package (version
>> 6.1+20181013-2+deb10u2).  It occurs for the numeric capability 15
>> (no_color_video, I think) in the xterm-xf86-v32 terminal description,
>
> You're referring to a cancelled capability, which infocmp shows as
>
>       ncv@,

Yes.  It's not clear to me whether this is supposed to be a
source-only feature, given that term(5) does not provide a way to
represent it in the binary (and explicitly says that -2 is not valid
in these places, although these values occur in practice).

Does this clarify my concerns?