ref: ac7e083f2c70bde5e5361c8cf2fcf116ddc1b5f1 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); }