Re: display-completion-list should not strip text properties

[Richard Stallman]

    The other functions involved in completing (`all-completions',
    `try-completions', etc.) already DTRT in this regard. A `princ'-to-`insert'
    substitution in `display-completion-list' is the only change needed to allow
    faces and other text properties in buffer *Completions*. Users could then
    pass propertized strings to, for example, `completing-read' and have them
    displayed as defined.

Is there a case where this is useful?