GMP bootstrap fails with Autoconf 2.69d

[Hans Åberg]

> On 16 Nov 2020, at 11:41, Vincent Lefevre <vincent at vinc17.net> wrote:
> 
> On 2020-11-16 10:29:13 +0100, Hans Åberg wrote:
>>> On 16 Nov 2020, at 01:18, Vincent Lefevre <vincent at vinc17.net> wrote:
>>> If I understand correctly, the goal is to have the Reporting-Bugs.html
>>> URL together with the e-mail address.
>> 
>> Yes, and such a feature is not supported.
>> 
>> https://www.gnu.org/software/autoconf/manual/autoconf-2.69/html_node/Initializing-configure.html
> 
> I can read:
> 
>  AC_PACKAGE_BUGREPORT, PACKAGE_BUGREPORT
>    Exactly bug-report, if one was provided. Typically an email
>    address, or URL to a bug management web page.
> 
> So I think that GMP is correct here.
> 
> Earlier it is said "The optional argument bug-report should be the
> email to which users should send bug reports." but that's a "should"
> so that one can expect thinks to work, in particular with the
> AC_PACKAGE_BUGREPORT / PACKAGE_BUGREPORT description.
> 
> Note that URLs can contain commas (this occurs in practice, but
> perhaps not for BTS URLs), so that if commas or other characters
> are forbidden, this should be documented so that the URL is
> written with such characters encoded.
> 
> Note for GMP: if the URL is accepted, wouldn't it be better to just
> put the URL in order to make sure users read this page?

That seems better.