I think you can make this work with parallel music, instead of chords.
<< c, \deadNotes{ c ]>>
HTH,
Carl
I was looking about this. at first it seems to be a good solution
but then i could see that it give some problems managing voices.
it also displays some warning messages:
"ignoring too many clashing note columns"
if we could tell lilypond that all notes inside << >> are from
\voiceOne or \voiceTwo it could be definitly a perfect solution..
because we could manage beats by string
something like:
----------------------------------
% measure 1
<<
\voiceOne
%string 1 beats
{ e'4\1 e'4\1 e'4\1 e'4\1 }
%string 2 beats
{ b4\2 b4\2 b4\2 b4\2 }
%string 3 beats
{ g4\3 g4\3 g4\3 g4\3 }
%string 4 beats
{ d4\4 d4\4 d4\4 d4\4 }
%string 5 beats
{ a,4\5 a,4\5 a,4\5 a,4\5 }
%string 6 beats
{ e,4\6 e,4\6 e,4\6 e,4\6 }
----------------------------------
It solves the slide, palm mute, and dead problem.