…expressions, markup expressions, set up header fields and layout context overrides based on a switch passed on …
…is in the eligible list %% #(define-markup-command (if-target-in layout props eligible markp) (list? markup?) (value-if-target-in eligible (interpret-markup … …bass \transpose c c, \chdBoth >> >> \header { piece = \targetName } \layout { \context { \Lyrics \override LyricText.font-shape = #(value-if-target-in '(chords) '… …bass \transpose c c, \chdBoth >> >> \header { piece = \targetName } \layout { \context { \Lyrics \override LyricText.font-shape = #(value-if-target-in '(chords) '…