build in C++17 mode by default

* configure.ac: Activate C++17, and replace --enable-c++17 by
--enable-c++20.
* NEWS: Mention the news.
* .gitlab-ci.yml: Use C++20 for the former C++17 builds.
* HACKING, README, doc/org/compile.org, doc/org/concepts.org,
doc/org/index.org, doc/org/install.org, doc/org/tut.org,
doc/org/upgrade2.org, spot/misc/escape.hh: Adjust mentions
of C++14.
This commit is contained in:
Alexandre Duret-Lutz 2020-07-16 12:12:21 +02:00
parent a770727ee8
commit 4f23097619
12 changed files with 79 additions and 62 deletions

View file

@ -1,5 +1,5 @@
// -*- coding: utf-8 -*-
// Copyright (C) 2011-2013, 2015, 2018 Laboratoire de Recherche et
// Copyright (C) 2011-2013, 2015, 2018, 2020 Laboratoire de Recherche et
// Developpement de l'Epita (LRDE).
// Copyright (C) 2004 Laboratoire d'Informatique de Paris 6 (LIP6),
// département Systèmes Répartis Coopératifs (SRC), Université Pierre
@ -36,7 +36,7 @@ namespace spot
/// In CSV files, as defined by RFC4180, double-quoted string that
/// contain double-quotes should simply duplicate those quotes.
///
/// Note that in C++14,
/// Note that since C++14,
/// ```
/// os << std::quoted(str, '"', '"');
/// ```