Re: [RFC/PATCH] add: warn when -u or -A is used without filepattern

> Most git commands that can be used with our without a filepattern are
> tree-wide by default, the filepattern being used to restrict their scope.
> A few exceptions are: 'git grep', 'git clean', 'git add -u' and 'git add -A'.
>
> The inconsistancy of 'git add -u' and 'git add -A' are particularly
> problematic since other 'git add' subcommands (namely 'git add -p' and
> 'git add -e') are tree-wide by default.
>
> Flipping the default now is unacceptable, so this patch starts training
> users to type explicitely 'git add -u|-A :/' or 'git add -u|-A .', to prepare
> for the next steps:
>
> * forbid 'git add -u|-A' without filepattern (like 'git add' without
>   option)
>
> * much later, maybe, re-allow 'git add -u|-A' without filepattern, with a
>   tree-wide scope.
>
> A nice side effect of this patch is that it makes the :/ special
> filepattern easier to discover for users.

> The first step should look like this patch. The message remains vague
> about the next steps ("change in a future Git version", no mention of
> the exact change nor of the exact version in which it will happen),
> but I'm fine with refining it (perhaps this could be a 2.0 change,
> like the change to push.default?).