Re: General support for ! in git-config values

>> When you say "alias.co = !git checkout --foo-bar", you are not saying
>> "instead of usual aliases like 'alias.co = checkout' that defines what
>> string replaces the 'co' alias, please run !whatever command, capture
>> its output, and that is the _value_ of alias.co variable, i.e. the command
>> line that is going to be run".
>
> I think I see your point. Using the same "!" notation for "execute
> this command and exit" and "execute this command and use its result as
> the config value" might be confusing.