Re: "Hide" the tagline

[Simon Albrecht]

Am 27.02.2017 um 12:42 schrieb Urs Liska:
> Hi all,
>
> I'm looking for a way to "externally" hide the tagline, i.e. by either
> making it transparent or colouring it white.
>
> The "problem" is that I don't want to do it in the tagline markup
> definition itself but by injecting some code when invoking LilyPond. The
> intention is to write a wrapper script that hides the tagline of an
> arbitrary given score without affecting the layout.

Maybe you can invoke something like
#(define hide-tagline #t)
through the -e command line option,
write a markup command transparent-cond which applies the \transparent 
command to its argument depending on the value of ̀hide-tagline'
and use that to wrap the tagline markup in bookTitleMarkup.

HTH, Simon