ref: e2bc82d84b9e30a1fe8bf4320e27c2cccf47c0dc 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); }