How to specfy a map of slices?

[nf-brentsaner]

Given a struct field of type map[string][]string and env tag of SOMEVAR, how can one specify pairs in the environment variable?

I recommend use of a semicolon. e.g.:

export SOMEVAR='foo1:bar1,bar2;foo2:bar3;foo1:bar4'

should result in:

map[string][]string{
	"foo1": []string{
		"bar1",
		"bar2",
		"bar4",
	},
	"foo2": []string{
		"bar3",
	},
}

Currently, it would result in:

map[string][]string{
	"foo1": []string{
		"bar1,bar2;foo2:bar3;foo1:bar4",
	},
}

Likewise, specifying (assuming short:"m"):

-m "foo1:bar1,bar2" -m "foo2:bar3,bar4" -m "foo1:bar5"

currently would result in:

map[string][]string{
	"foo1": []string{
		"bar5",
	},
	"foo2": []string{
		"bar3,bar4",
	},
}

instead of:

map[string][]string{
	"foo1": []string{
		"bar1",
		"bar2",
		"bar5",
	},
	"foo2": []string{
		"bar3",
		"bar4",
	},
}

Which is also clearly incorrect.