nasty header positioning issues

[Werner LEMBERG]

[2.13.11; AFAIK, nothing has changed in more recent versions w.r.t.
this problem]


Look at the attached example file and its PDF output.  This

  title = "ABCDEDCBA"

and this

  title = \markup { \fill-line { "ABCDEDCBA" } }

should have the same horizontal position, IMHO.  However, this is not
true.  Why not?

This seems to be a bug...


    Werner

%
% header.ly
%

\version "2.13.11"

#(ly:set-option 'point-and-click #f)

#(set-default-paper-size "a4")
#(set-global-staff-size 18)

\paper {
  line-width = 170.0\mm
  top-margin = 15.0\mm
  bottom-margin = 15.0\mm
  indent = 0.0\mm
}

\bookpart {
  \header {
    title = "ABCDEDCBA"
    subtitle = "ABCDEFGFEDCBA"
    copyright = ##f
    footer = ##f
    tagline = ##f
  }
  \score { c'' }
}

\bookpart {
  \header {
    title = \markup { \fill-line { "ABCDEDCBA" } }
    subtitle = "ABCDEFGFEDCBA"
    copyright = ##f
    footer = ##f
    tagline = ##f
  }
  \score { c'' }
}

% EOF

header.pdf
Description: Adobe PDF document