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/usr/share/highlight/langDefs/lilypond.lang is in highlight-common 3.18-3build1.

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-- Language definition generated by lang2to3

Description="Lilypond"

Identifiers=[[ ([a-z]+)\d* ]]

Keywords={
  { Id=1,
    List={"c", "d", "e", "f", "g", "a", "h", "b", "cis", "dis", "eis", "fis", "gis", "ais", "des", "es", "ges", "as", "s", "bes"},
  },
  { Id=2,
    Regex=[[\\[\w<>!\\]+]],
  },
}

Strings={
  Delimiter=[["]],
}

IgnoreCase=false

Comments={
  { Block=false,
    Delimiter= { [[%(?!\{).*]] },
  },
  { Block=true,
    Nested=false,
    Delimiter= { [[\%\{]],[[\}\%]],}
  }
}

Operators=[[\(|\)|\[|\]|\{|\}|<|>|\'|\,|\.|\/|\:|\^|\=|\#|\*|\_|\!]]