ref: fe896e5a49d5d6a1218f3389d2e6ca1a8b7c1228 dir: /lib/c/src/isgraph.c/
#define __USE_MACROS #include <ctype.h> #undef isgraph int isgraph(int c) { return (__ctype+1)[c] & (_P|_U|_L|_D); }