Re: Mutable pronouns in Lyrics

[Simon Albrecht]

On 20.12.2016 20:42, Br. Samuel Springuel wrote:
> #(if (eqv? test 1) (error "more then one pronoun") (set! test 1)) 

Hello Samuel,

you can just omit these tests and trust that the \keepWithTag mechanism 
will work properly :-) Because it does – the pronouns show up correctly.
If you were to need such tests, it’s better to use one of ly:message, 
ly:warning, ly:error instead of plain guile ‘error’.
And one more hint to the problem: even if a tagged section in your 
example is later omitted through \keepWithTag, the scheme code is still 
executed first.

HTH, Simon