Interesting idea. For what it’s worth, I’d have the detection of undocumented functions as a separate library and then build yours on top of it.

Actually the task and the extraction of the undocumented functions are split in different modules.

but you can use the extraction of the undocumented functions by yourself since these functions are public in this module LazyDoc

Output seems reasonable overall. There’s a bug with functions that pattern-match their arguments without naming them, for instance filter_documented_functions. The bindings inside the first argument’s match become the documentation, and the second parameter is entirely ignored.

  def filter_undocumented_functions(
        {module, module_ast, _code_mod, functions},
        {_mod, {_module_doc, function_docs}}
      ) do

filter_undocumented_functions(arg1, arg2)

Returns the filtered list of functions that are documented and visible.

Parameters

• module - the module from which functions are being filtered.
• module_ast - the abstract syntax tree of the module.
• _code_mod - additional code modifications.
• functions - the list of functions to be filtered.

Just release version 0.5.4, which fixes all you said.