ref: f4347d0c4b3eed5f0a65917453cfddd9dca1cb7a 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); }