Re: project wide: git config entry for [diff] renames=true

[Junio C Hamano <gitster@pobox.com>]

Jeff King <peff@peff.net> writes:

> There is no such mechanism within git. We've resisted adding one because
> of the danger of something like:
>
>   [diff]
>     external = rm -rf /
>
> diff.renames is probably safe, but any config-sharing mechanism would
> have to deal with either whitelisting, or providing some mechanism for
> the puller to review changes before blindly following them.

It might be useful to add a "safe include" feature, perhaps?  We
ship a small set of hardcoded default whitelist (diff.renames may be
included in there), and allow the user who do not want to be
affected to override it with

    [include]
        safe = !diff.renames

or even

    [config]
    	safe = !*

at the same time allow them to add what we do not hardcode to it
using the same mechanism, e.g.

    [config]
    	safe = merge.*

Then

    [include]
	safe
    	path = ../project.gitconfig

    [include]
    	path = $HOME/.gitconfig-variant1

would only allow the variables include.safe deems safe to affect
us from the in-tree file, and use everything from my personal set in
my home directory.