Re: About `name' in loadup.el

[Eli Zaretskii]

> Date: Sun, 10 Mar 2013 08:11:24 +0800
> From: Xue Fuqiao <xfq.free@gmail.com>
> 
> In lisp/loadup.el:
> 
>   (let ((name (concat "emacs-" emacs-version)))
>     (while (string-match "[^-+_.a-zA-Z0-9]+" name)
>       (setq name (concat (downcase (substring name 0 (match-beginning 0)))
>                      "-"
>                      (substring name (match-end 0)))))
>     (message "Adding name %s" name)
>     (add-name-to-file "emacs" name t))
> 
> I'm confused here.  What does this fragment of code do?

It creates a hard link emacs-XX.YY.ZZ -> emacs.

> And when will characters other than "-+_.a-zA-Z0-9" be in
> `emacs-version'?

It's a 'while', not an 'if'.