ref: 5d8b5ae1ef2dd2b2e33e2683968dc62ce25a3cac 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); }