Re: Lyrics break estimation of vertical spacing

[Boris Shingarov]

First of all, thank you Joe for all the explanations -- now that it
has dawned on me what the source of confusion was, it all
makes sense.  Thanks!!
 
> I am now thinking about how to implement this TODO best.
 > One idea that immediately comes to mind, is to replace the
 > unified heights with begin- and rest-of-line pairs, dragging them
 
Looking at Page_breaking::min_page_count(), I am thinking
about the correct generalization of the concept of "rod_height",
so that we would still have one "current position", but two
"current bottom edges" (so the next current position is calculated
by juxtaposing the next system's two top edges against these
current bottom edges).
The spring length, will also remain one.
 
Do you agree with this line of thinking, or am I way off with my idea?