[tsm]

Removed lines happen between existing lines, so using an underscore makes it look like that.

Compare:

    25  - def foo():
    26       baz()

With:

    25  _ def foo():
    26       baz()

(Where there used to be a bar() call before baz().) The first version makes it look like the `def foo():` was somehow removed.

[awef]

Valid point! Can't believe it didn't occur to me ;)