• Alexandre Duret-Lutz's avatar
    build in C++17 mode by default · 4f230976
    Alexandre Duret-Lutz authored
    * configure.ac: Activate C++17, and replace --enable-c++17 by
    * 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.
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