ref: 6b5ef4c2ebd7ad1d58bd740868b2d8f21336ee60 dir: /lib/c/isgraph.c/
#define __USE_MACROS #include <ctype.h> #undef isgraph int isgraph(int c) { return (__ctype+1)[c] & (_P|_U|_L|_D); }