\repeatTie on a single note in a chord

[Mojca Miklavec]

Hi,

How can one add "\repeatTie" that only works on a single note in a chord?

Example where I would only want to add the tie just to "f":

melody = \fixed c' {
  \time 3/4
  \repeat volta 2 {
    <b, d f>2.~ |
  } \alternative {
    {
      <a, c f>2. |
    } {
      <a, c f>2 \repeatTie r4 |
    }
  }
}

Thank you,
    Mojca

(Please CC me.)