bug#33264: Whitelist vc-follow-symlinks as a safe file variable

[Lars Ingebrigtsen]

"Eugene J." <w3techplayground@gmail.com> writes:

> It is useful to have directory local `vc-follow-symlinks` with value `nil` 
> when you
> have to use symlink paths in a particular case while having it `ask` or `t` 
> as a
> default. 
> Marking the variable as  "safe file variable" will reduce the friction.

I've now marked the nil value as safe in Emacs 29.

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   bloggy blog: http://lars.ingebrigtsen.no