rb_econv_open_exc  239 include/ruby/encoding.h VALUE rb_econv_open_exc(const char *senc, const char *denc, int ecflags);
rb_econv_open_exc  726 io.c                           rb_exc_raise(rb_econv_open_exc("", "", ecflags));
rb_econv_open_exc  755 io.c                               rb_exc_raise(rb_econv_open_exc(senc, denc, ecflags));
rb_econv_open_exc 1520 io.c                       rb_exc_raise(rb_econv_open_exc(sname, dname, ecflags));
rb_econv_open_exc 2155 transcode.c            rb_exc_raise(rb_econv_open_exc(src_encoding, dst_encoding, ecflags));
rb_econv_open_exc 2201 transcode.c            rb_exc_raise(rb_econv_open_exc(src_encoding, dst_encoding, ecflags));
rb_econv_open_exc 2883 transcode.c            rb_exc_raise(rb_econv_open_exc(sname, dname, ecflags));
rb_econv_open_exc 2886 transcode.c            rb_exc_raise(rb_econv_open_exc(sname, dname, ecflags));
rb_econv_open_exc 3122 transcode.c            rb_exc_raise(rb_econv_open_exc(sname, dname, ecflags));