GitLab

C/C++/ObjC preprocessor line (e.g. an unbalanced string quote or
unmatched paren) don't interact syntactically with stuff outside
the CPP line.
(c-get-state-before-change-function, c-before-font-lock-function,
c-anchored-cpp-prefix): new language variables.
(c-cpp-message-directives): Handle "#warning" in C, C++ and ObjC.