polymod | A library for composing data models from any number

I am trying to make a Friday Night Funkin' mod, but when I compile it, this error shows up:

I have a polynomial class TPoly, see the code below, which takes an array of coefficients coefs and evaluates the polynomial at some point x using the eval method. I was wondering whether it is possible to evaluate the polynomial directly by making the instance p callable, i.e. instead of p%eval(x) use p(x). In Python, the desirable behaviour can be achieved by defining the __call__ method. Does something similar exist in Fortran?

I want to make another class which will contain many TPoly attributes and I would like to avoid chaining of component selections object%poly1%eval(x). A function pointer to a class method would solve my problem but I found that it is not possible, see another thread.

I am would like to edit my R chunks from RMarkdown files the way org-edit-special does. I found generic-edit-special from jonathan leech-pepin that does a similar thing for js, css and ruby in html files. I figured I could tweak it as suggested by the author to make it work for my case but I was not able to make it work even in its original form.

I was able to run the function ges/org-edit-special from a html file with a js script block but nothing happened (no error and no new buffer). I used the Internal Script example from here as html file for this test.

Here is the init.el I made for testing: