RE: Variable in a dotted list

[Drew Adams]

> > How can I create a dotted list with the value of a variable 
> as cdr?  
> > The documentation is
> >   -- Variable: backup-directory-alist
> >       This variable's value is an alist of filename patterns 
> >       and backup directory names.  Each element looks like
> >            (REGEXP . DIRECTORY)
> > and the value of DIRECTORY is a concat-enation of 
> > user-emacs-directory and a "name." It works to use
> >     (setq backup-directory-alist   '(("." . "~/.emacs.d/Name")))
> > but it's a bit too inflexible IMO...
> 
> (setq b-d-a  `((,user-emacs-directory ,@some-name)))  or
> (setq b-d-a  `((,user-emacs-directory . ,some-name))) or
> (setq b-d-a  (list (cons user-emacs-directory some-name)))
> 
> But I'm probably misunderstanding the question.
> 
> You said you wanted to create a dotted list with a variable's 
> value as cdr, but
> your example doesn't show that. The cdr you use is 
> "~/.emacs.d/Name", which you
> don't give as the value of a variable. The only variables 
> mentioned are
> `backup-directory-alist' and `user-emacs-directory' (which is 
> used for the car).

I guess should have said this instead:

(setq b-d-a  `(("." ,@(concat user-emacs-directory "Name"))))  or
(setq b-d-a  `(("." . ,(concat user-emacs-directory "Name")))) or
(setq b-d-a  (list (cons "." (concat user-emacs-directory "Name"))))