Suppose I've got multiple cursors along several lines, like this:

foo|
barr|
foobar|
baz|

How can I automatically push the whitespace at the end of each line out to a flat edge, like this?:

foo    |
barr   |
foobar |
baz    |

(In these examples, | is supposed to be my cursor.)

EDIT #1

When you just Tab or Space from the initial arrangement, you get this:

# Useful, but not what I'm looking for
foo    |
barr    |
foobar    |
baz    |

That's useful, but not what I'm looking for. I'm looking for some kind of keyboard shortcut that will let me indent from a ragged multi-cursor insert out to a straight column.