Percent-sign repeats for non-whole-measure patterns

[Lukas-Fabian Moser]

Is it possible to force Lilypond to use % as a repeat sign if the repeated section does not fill a whole measure?

\relative c' {

  \repeat percent 2 { c4 d }

  \repeat percent 2 { c4 d e f }

}

Here, the first repeat is a slash /, the second a percent sign %. I'd like to have a % sign in both instances (because the manuscript I'm preparing in a scientific context uses it that way).

Best

Lukas