Robuta

https://hashnode.com/posts/c-library-ctypeh-header-functions/64a16206499dc8071bd2d6cc Discussion on "C library ctype.h header functions" | Hashnode on c ctype h discussion library header https://cygwin.com/pipermail/cygwin/1998-February/008967.html ctype.h and serious programming ctype h serious programming https://lkml.org/lkml/2014/6/26/67 LKML: Jiri Olsa: Re: [PATCH] perf tool: Carve out ctype.h et al