1\version "2.17.6"
2
3\header {
4
5  texidoc = "The thickness setting between markup lines and other
6  lines is consistent."
7
8}
9
10\new Staff {
11  \override TextSpanner.bound-details.right.text =
12        #(markup #:draw-line '(0 . -1))
13  \override TextSpanner.thickness = #2
14  c'4 \startTextSpan
15  c'4 \stopTextSpan
16}
17