ref: 5b9d9b6057b4ebdb7d4590c849607f6d0765c00c 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); }