/*
 * call-seq: Zlib::GzipReader.open(filename) {|gz| ... }
 *
 * Opens a file specified by +filename+ as a gzipped file, and returns a
 * GzipReader object associated with that file.  Further details of this method
 * are in Zlib::GzipReader.new and ZLib::GzipReader.wrap.
 */
static VALUE
rb_gzreader_s_open(argc, argv, klass)
    int argc;
    VALUE *argv;
    VALUE klass;
{
    return gzfile_s_open(argc, argv, klass, "rb");
}