rb_econv_putbackable 339 include/ruby/encoding.h int rb_econv_putbackable(rb_econv_t *ec); rb_econv_putbackable 2271 io.c putbackable = rb_econv_putbackable(fptr->readconv); rb_econv_putbackable 4112 transcode.c n = rb_econv_putbackable(ec); rb_econv_putbackable 4115 transcode.c putbackable = rb_econv_putbackable(ec);