Re: NR 4.1.6: blank-last-page-force and penalty values

[Joe Neeman]

On Fri, Aug 10, 2012 at 7:28 PM, Federico Bruni <address@hidden> wrote:

> NR 4.1.6, \paper variable for page breaking
> http://lilypond.org/doc/v2.15/**Documentation/notation/other-_**
> 005cpaper-variables#_**005cpaper-variables-for-page-**breaking<http://lilypond.org/doc/v2.15/Documentation/notation/other-_005cpaper-variables#_005cpaper-variables-for-page-breaking>
>
> I'd like to force the add of a blank page in case the number of pages in a
> book is odd.
> I guess I should use blank-last-page-force.
>
> I had a look at ly/paper-defaults-init.ly to see the default values and I
> see that penalty values are numbers.
> Default value of blank-last-page-force is 0, so I guess that as I increase
> the number it's more likely to get the blank page.
>

No, lilypond will never put a blank page at the end. You could probably
achieve that in a pdf editor.

Also, the definition is not very clear, because it doesn't say explicitly
> what it actually does.. you have to guess it:
>
> ###
> blank-last-page-force
> The penalty for ending the score on an odd-numbered page.
> ###
>

If you make blank-last-page-force large and use ly:page-turn-breaking, then
lilypond will be unlikely to produce a score where the last page is
odd-numbered. Instead, it will adjust the spacing in order to use one page
more or fewer.

Cheers,
Joe