Re: [Lilypond-auto] Issue 2917 in lilypond: Extend \keepWithTag to allow multiple tags

[lilypond]

Comment #3 on issue 2917 by address@hidden: Extend \keepWithTag to allow  
multiple tags
http://code.google.com/p/lilypond/issues/detail?id=2917

Issue 2883 has the following commit in its series:

commit f3b98fa215967ca18d688336e6744ce1bbe0f926
Author: David Kastrup <address@hidden>
Date:   Tue Oct 9 13:26:52 2012 +0200

    Replace the rather fuzzy list-or-symbol? with symbol-list-or-symbol?

    list-or-symbol? was previously used in the meaning of
    symbol-list-or-symbol? only, and there is no point in not checking the
    list members for actually being symbols, in order to avoid ugly
    surprises later.

Should I try fudging this out into a separate issue in the express lane?   
It seems like the kind of predicate one would want to use in the course of  
tackling this issue.