I mean the conventions of HAVE and USE prefixed macros in C, as opposed to the C found in K&R or C17-ISO/IEC 9899:2018. Like this (they use HAS, not HAVE) ht

I mean the conventions of HAVE and USE prefixed macros in C, as opposed to the C found in K&R or C17-ISO/IEC 9899:2018. Like this (they use HAS, not HAVE) https://perl5.git.perl.org/perl5.git/blob/HEAD:/pp.c#l1259 https://perl5.git.perl.org/perl5.git/blob/HEAD:/pp.c#l1259 or this https://github.com/ruby/ruby/blob/master/st.c#L115 https://github.com/ruby/ruby/blob/master/st.c#L115