--- a ---
Before: foobar
After: fooar
--- b ---
Before: a&nbsp;&nbsp;&nbsp;
After: a&nbsp;&nbsp;
--- c ---
Before: a&nbsp;&nbsp;b
After: a b
--- d ---
Before: a&nbsp;&nbsp;&nbsp;b
After: a&nbsp; b
--- e ---
Before: a&nbsp;&nbsp;&nbsp;&nbsp;b
After: a&nbsp; &nbsp;b
--- f ---
Before: a&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;b
After: a&nbsp; &nbsp; b
--- g ---
Before: &nbsp;&nbsp;b
After: &nbsp;b