bug#72695: CC Mode 5.35.2 (C++//l); c++-mode misindents 'if constexpr' inside lambdas

--===============7481937121903399330==
Content-Type: multipart/signed; boundary="=-=-=";
 micalg=pgp-sha512; protocol="application/pgp-signature"

--=-=-=
Content-Type: text/plain; charset=utf-8
Content-Transfer-Encoding: quoted-printable

Hi Alan,

Alan Mackenzie <[email protected]> writes:

> So, can I close bug#72695 now?

Ah, excuse me.  Yes, I do believe so.

>> I'm not sure this is a bug but it is something I noticed by accident:
>
>>       (std::visit
>>        ([] <typename T>
>>        	(const T& data)
>> 	{
>>         }));
>
>> ... the { is not an inline-open, but an arglist-cont-nonempty (though,
>> to be clear, the body is indented okay; I've elided it from the example
>> above for that reason).
>
> That is a bug, yes, but a different bug.  Could I ask you to raise a new
> Emacs bug report for it, please?

I can do so tomorrow - getting drowsy at this point.

> I think it will require some effort to solve, since it involves "function
> type" constructs inside parentheses, which I think was something new to
> CC Mode with C++20 (but I'm not sure).  Rather than just relying on the
> context of the outer (, c-guess-basic-syntax will have to examine the
> contents of (...) to get better analysis.

Hmm, I think this was here in 11 also (and perhaps before, due to the
GNU statement expression extension).

>> Same goes for the (const T& data), which doesn't get indented the same
>> as a 'standalone' lambda, but it does indent the same as one saved into
>> a variable:
>
>>   []
>>     ()
>>   {
>>   };
>>   auto x =3D
>>     []
>>     ()
>>     {
>>     };
>>   auto x =3D
>>     ([]
>>      ()
>>     {
>>     });
>
>> I do not know whether this is correct.
>
> Neither do I, this late at night.  ;-)  I'll have a look at all these
> examples tomorrow.

:-)

Thanks.

I will file a bug with these tomorrow.

Have a lovely evening!
=2D-=20
Arsen Arsenovi=C4=87

--=-=-=
Content-Type: application/pgp-signature; name="signature.asc"

-----BEGIN PGP SIGNATURE-----

iOYEARYKAI4WIQT+4rPRE/wAoxYtYGFSwpQwHqLEkwUCZvc+xF8UgAAAAAAuAChp
c3N1ZXItZnByQG5vdGF0aW9ucy5vcGVucGdwLmZpZnRoaG9yc2VtYW4ubmV0RkVF
MkIzRDExM0ZDMDBBMzE2MkQ2MDYxNTJDMjk0MzAxRUEyQzQ5MxAcYXJzZW5AYWFy
c2VuLm1lAAoJEFLClDAeosST/u4A/2lr6kBsQ4u/nSdSE2l9SrhQU9eWcWFS6ilL
eKzCMac6AQDTROf1OoY/6MHfR5K0z1ih7RZvo/dIcx0FS0mt8+irAQ==
=BmwT
-----END PGP SIGNATURE-----
--=-=-=--




--===============7481937121903399330==
Content-Type: text/plain; charset="us-ascii"
MIME-Version: 1.0
Content-Transfer-Encoding: 7bit
Content-Disposition: inline


--===============7481937121903399330==--