ChordNames and wordspae=#1 don't play together

[Peter Chubb]

Hi Folks,
   With Lilypond 2.2.3 from the Debian package 2.2.3-1.pk, if I set
   word-space = #1 in a chordnames context, then each glyph within
   each chord is spread out, instead of chord symbols each being treated
   as a word.

Example:


\score { 
       \context ChordNames \chords { fis:m7/+d gis:dim bes:7/+as bes:7/+g } 
       \paper { 
           \context {  
               \ChordNamesContext  
               \override ChordName #'word-space = #1  
               \override ChordName #'style = #'american  
               chordChanges = ##t  
           }  
       } 
}