Repeat bar lines inside \markup block?

[Tobias Braun]

Hi,

Is there a way to print nice repeat bar lines in a \markup block used for 
verses of a song printed below the main score, instead of having to resort to 
"|:" or "/:"? I tried pasting the respective unicode signs and they display 
fine in my text editor, but unfortunately, LilyPond turns them into garbage in 
the rendered output.

Tobias