rb_isprint        419 ext/curses/curses.c     if (rb_isprint(c)) {
rb_isprint       1113 ext/curses/curses.c     if (rb_isprint(c)) {
rb_isprint       1184 include/ruby/ruby.h int rb_isprint(int c);
rb_isprint       1195 include/ruby/ruby.h #define ISPRINT(c) rb_isprint((unsigned char)(c))