How do I get the bar lines in successive staves to align?

Question

In the following, lines 2-6 have the same notes, yet the bar lines in the middle are not aligned. Is there a way to get them to align? Also, is there a way to extend the bar lines to the lyrics (here generated automatically using NoteNames context)

        \version "2.18.2"

    musicA = {c d e f g a b c c b a g f e d c
                        c d e f c d e f c d e f g a b c
                        c b a g c b a g c b a g f e d c}
    fooBar = { s1 \bar "!" s2 \bar "!" s2 \bar "||" }

    \score {
      \new Staff 
      {

        \compoundMeter #'((4 4) (2 4) (2 4))
        \set Timing.beatStructure = #'(4 2 2 )
        <<
          \new Voice
          {
           \relative c' {\easyHeadsOn \musicA \musicA}


          }
          \context NoteNames  {   
          \musicA }

          \new Voice = "theBarLines" { \repeat unfold 6 {\repeat unfold 2 \fooBar \bar "|." }}
          \new Voice = "breaks" {\repeat unfold 5 {s2*8 \break}}


        >>
    }}

Answer 1

I agree with the comment from Édouard. Of course, one can tell LilyPond to leave all optical corrections that are put in for a more even optical appearance of the music flow (like kernings are in a font). Your question is like asking how to tell your typesetter to have "rivers" in your text line up better.

LilyPond is flexible: you can tell it to stop doing what it is good at.

\version "2.18.2"

musicA = {c d e f g a b c c b a g f e d c
                    c d e f c d e f c d e f g a b c
                    c b a g c b a g c b a g f e d c}
fooBar = { s1 \bar "!" s2 \bar "!" s2 \bar "||" }

\score {
  \new Staff 
  {

    \compoundMeter #'((4 4) (2 4) (2 4))
    \set Timing.beatStructure = #'(4 2 2 )
    <<
      \new Voice
      {
       \relative c' {\easyHeadsOn \musicA \musicA}
      }
      \context NoteNames  { \musicA }
      \new Voice = "theBarLines" { \repeat unfold 6 {\repeat unfold 2 \fooBar \bar "|." }}
      \new Voice = "breaks" {\repeat unfold 5 {s2*8 \break}}
    >>
  }
  \layout {
    \context {
      \Score
      proportionalNotationDuration = #(ly:make-moment 1/4)
      \override NoteSpacing.stem-spacing-correction = #0
      \override NoteSpacing.same-direction-correction = #0
      \override NoteSpacing.knee-spacing-correction = #0
  }}
}