Unable to tie chords together in chordmode

[Stephen Torri]

When I attempt to use a chord tie in a \chordmode I get an error when
using lilypond 2.6.5:
        
        lilypond Silent_Night.ly
        GNU LilyPond 2.6.5
        Processing `Silent_Night.ly'
        Parsing...
        Interpreting music...
        piece.ly:30:27: warning: junking event: `TieEvent'
        harmonies = \chordmode { g1
                                   ~ | g1 | d1 }

Here is my chord line:

        harmonies = \chordmode { g1~ | g1 | d1 }

What am I doing wrong?

Stephen

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