[tex-k] do not understand

[Wolfgang Helbig]

Hello,

according to the answer to ex.14.10 (A97), the sequence \break\break 
causes two line breaks, i.e. an empty line. This is confirmed by a 
simple TeX run.

But according to the following paragraph, all discardable items after a 
break are removed until to something non-discardable.

Now, \break is a \penalty-10000 and penalties are discardables. From 
this I'd expect the second \break in \break\break to be discarded.

Did I miss something? Is this one of the little white lies? Or is this 
an error in the TeXbook?

Greetings,

-- 
Wolfgang Helbig