rb_sym_intern_cstr 1381 internal.h     #define rb_sym_intern_cstr(ptr, enc) __extension__ ( \
rb_sym_intern_cstr 1018 symbol.c       #undef rb_sym_intern_cstr
rb_sym_intern_cstr 1038 symbol.c       rb_sym_intern_cstr(const char *ptr, rb_encoding *enc)