Mix.Config.eval-exclamation-mark

You're seeing just the function eval-exclamation-mark, go back to Mix.Config module for more information.
Link to this function

eval!(file, imported_paths \\ [])

View Source
This function is deprecated. Use Config.Reader.read_imports!/2 instead.

Evaluates the given configuration file.

It accepts a list of imported_paths that should raise if attempted to be imported again (to avoid recursive imports).

It returns a tuple with the configuration and the imported paths.