The only way to escape ..1 in R6RS is to represent it as \x2e;.1, which is ugly, error-prone, and not at all portable.
When I saw this, I knew it looked familiar: I think it is what akku is doing to the module so loko can read it without all the errors that chez had. Is there a solution like this we can put in place that is mostly in the background or is that not feasible?