ref: 736b8b4e9a0173ce9a59655b3e5ae04dc1ac2700 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); }