orig_name()
public
Returns original filename recorded in the gzip file header, or nil
if original filename is not present.
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static VALUE
rb_gzfile_orig_name(VALUE obj)
{
VALUE str = get_gzfile(obj)->orig_name;
if (!NIL_P(str)) {
str = rb_str_dup(str);
}
OBJ_TAINT(str); /* for safe */
return str;
}