How to use the same file extension for different major modes

I am using a custom version org-mode

called lawlist-org-mode

- every function and variable is prefixed lawlist-

and the modified version has a lot of custom functionality that is not available in the stock version. Sometimes I like to use a stock version org-mode

, but that requires a manual change auto-mode-alist

and then restarting Emacs. This is necessary because of the function and variable org-agenda-files

and validation, which org-mode

performs validation of the main major mode. Is there an efficient way to modify this programmatically depending on the function being called?

The stock org-mode

needs this entry:

(add-to-list 'auto-mode-alist '("\\.todo\\'" . org-mode))

      

        
        
        
      

    

The custom version called lawlist-org-mode

needs this entry:

(add-to-list 'auto-mode-alist '("\\.todo\\'" . lawlist-org-mode))

      

        
        
        
      

    

<strong> Examples:

• If I call M-x org-agenda
  
  , the files .todo
  
  should be in org-mode
  
  .

• If I call M-x lawlist-org-agenda
  
  , the file .todo
  
  should be in lawlist-org-mode
  
  .

Some ideas . org-agenda-files

are usually accessed by org-agenda functions using the following lines of code - (org-agenda-files nil 'ifmode) . . . (while (setq file (pop files))

. Perhaps modifying the function org-agenda-files

would be an option?