Re: Text centralized above a TextSpan

[Simon Albrecht]

On 19.09.2015 22:48, David Kastrup wrote:
> However, (re-)using engravers for the "picking apart" bit in a context
> without its own vertical axis group might be an interesting option.
> Want several text spanners?  Use several contexts.

This reminds me: the ‘standard’ use case for this kind of text spanner 
is ri -- tar -- dan -- do or the like, i.e. actually a Tempo Spanner 
<https://sourceforge.net/p/testlilyissues/issues/3176/>. It would make 
sense to have this in a separate context (TempoLine?) at the top of the 
system. However, as I already said in the issue, tempo spanners should 
correspond to MetronomeMarks in syntax, so this would require complete 
abandoning of the current \tempo syntax, wouldn’t it? Alternatively, we 
might retain the current method as is and add a new one with support for 
tempo spanners, entered in a manner alike to lyrics entering:

%%%%%%%%%%%%%
timeTrack = {
  \time 3/4
  Prestissimo2.
  \bar "||"
  \time 2/2
  Larghetto1*4
  ral2 -- len --
  tan -- do
  s1
  \bar "|."
}
music = \relative {
  c'4 e8 g c4
  e,2 fis4 gis
  a2 e
  c e4 c

  a2 a'4 g
  f2 g
  a h
  c1\fermata
}

\score {
  <<
    \new TempoLine \timeTrack
    \new Staff \music
  >>
}
%%%%%%%%%%%%%

Which looks promising, if you ask me…

Yours, Simon