bug#15676: 24.3; visual-line does not activate properly from file header

[Glenn Morris]

Josh Hunsaker wrote:

> When I add the following line:
>
>     -*- visual-line-mode: t -*-
>
> to the top of a file, and open that file in a new buffer, the line
> wrapping does not work.

C-h v visual-line-mode:

  Use the command `visual-line-mode' to change this variable.

info emacs:
   48.2.4.1 Specifying File Variables
   
   To enable or disable a minor mode in a local variables list, use the
   `eval' keyword with a Lisp expression that runs the mode command (*note
   Minor Modes::). For example, the following local variables list enables
   Eldoc mode (*note Lisp Doc::) by calling `eldoc-mode' with no argument
   (calling it with an argument of 1 would do the same), and disables Font
   Lock mode (*note Font Lock::) by calling `font-lock-mode' with an
   argument of -1.
   
        ;; Local Variables:
        ;; eval: (eldoc-mode)
        ;; eval: (font-lock-mode -1)
        ;; End: