RE: tab completion for a custom function.

[Drew Adams]

> i have a custom function that gets input a project name then
> it opens projects main file and two terminal's in to project 
> directories. i get the input using (interactive "sProject: ")
        
> i want to use tab completion for project names. instead of
> typing the whole name. can i supply a list of names to the
> interactive function?

No. But you can use Lisp code other than a string in the argument to
`interactive'. The code should return the list of the arguments. The code can
call `completing-read' to read user input with completion.

(interactive
  (list (completing-read "Project: " (my-list-of-projects) ...)))