Re: /alternative slur bug

[Palmer Ralph]

On Fri, Mar 5, 2021 at 5:29 AM bb <b.bloechl@btwo.berlin> wrote:
>
> \version "2.20.0"
> \relative c'' {\repeat volta 2 { f1 ( |   }
>    \alternative { {f2) r2}
>                          { f1) }  } }
>
> No slur with the second alternative, warning that slur cannot be ended
>
> Warnung: slur kann nicht beendet werden
>      { f1
>          ) ( |  f2 ) (f4) r4 }
>

bb -
Please see
https://lilypond.org/doc/v2.21/Documentation/notation/modifying-shapes#modifying-ties-and-slurs
(I'm sorry, I don't know what the URL is for the German documentation,
and I've lost too much of my high school Deutsch to be able to respond
appropriately.)
You should be able to use something from this example :

%%%%%%%%%%%%%%%%%%%%
\relative {
  c''1
  \repeat volta 3 { c4 d( e f }
  \alternative {
    { g2) d }
    {
      g2
        % create a slur and move it to a new position
        % the <> is just an empty chord to carry the slur termination
        -\tweak control-points
                  #'((-2 . 3.8) (-1 . 3.9) (0 . 4) (1 . 3.4)) ( <> )
      f,
    }
    {
      e'2
        % create a slur and move it to a new position
        -\tweak control-points
                  #'((-2 . 3) (-1 . 3.1) (0 . 3.2) (1 . 2.4)) ( <> )
      f,
    }
  }
}
%%%%%%%%%%%%%%%%%%%%%%%

I hope this helps,

Ralph