anchor.diff:  execute_template([Other | Rest], TemplateType, TemplateName, Context, Force, ExistingFiles) ->
       ?WARN("Skipping unknown template instruction: ~p\n", [Other]),
       execute_template(Rest, TemplateType, TemplateName, Context, Force, ExistingFiles).
  -
  
positive.code:     Value = rebar_config:get_global(Key, dict:fetch(Key, Dict)),
      update_vars(Rest, dict:store(Key, Value, Dict)).
  
  
  %%
  %% Given a string or binary, parse it into a list of terms, ala file:consult/0
  
negative.code: 
      %% For each variable, see if it's defined in global vars -- if it is, prefer that
      %% value over the defaults
      Context1 = update_vars(dict:fetch_keys(Context0), Context0),
      ?DEBUG("Template ~p context: ~p\n", [template_id(), dict:to_list(Context1)]),
  
      %% Handle variables that possibly include other variables in their
      %% definition
      Context = resolve_recursive_vars(dict:to_list(Context1), Context1),
  
      ?DEBUG("Resolved Template ~p context: ~p\n", [template_id(), dict:to_list(Context1)]),
  
      %% Now, use our context to process the template definition -- this permits us to
      %% use variables within the definition for filenames.
  