ref: 50d3a85c81eabcd5dcc9cb7f6da8380b07acf65a 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); }