bug#19867: c++-mode indentation issues with C++1x initializer lists

[Glenn M. <rg...@gn...>]

In Emacs, we traditionally reserve severity > normal for failure to
build, security issues etc. So I'll downgrade this to normal, but don't
worry, because I have seen very little evidence that the severity makes
any difference to whether something gets fixed. :), and :( too.