Regression test correction

[Paul Scott]

Attached is a repaired regression test example which correctly names a B 
flat clarinet instead of a B semi-flat clarinet.

2.1.24

HTH

Paul Scott

% Generated by lilypond-book
% Options: [printfilename,texidoc,linewidth]

\paper {
    linewidth = 160 \mm
}
\renameinput "instrument-name-markup.ly"
\header {

texidoc = "Instrument names are set with @code{Staff.instrument} and
@code{Staff.instr}. You can enter markup texts to create more funky names,
including alterations. "

}


\version "2.1.22"


textFlat = \markup {\smaller \flat}

\score {
  \notes \new Staff {
    \set Staff.instrument = \markup { \column < "Clarinetti" { "in B" \textFlat 
} > }
    \set Staff.instr = \markup { \smaller  { "Cl(B" \textFlat ")" } }

    { c''1 \break c'' }

  }
  \paper { raggedright = ##t }
}


20c20
< textFlat = \markup {\smaller \flat}
---
> textFlat = \markup {\smaller \semiflat}