use lilypond 2.27 and be compatibel to 2.26

private_includes/base/all.ily

@@ -20,8 +20,7 @@
       "scm" file-name-separator-string filename
     )))))
     (scm-load "resolve_inherits.scm")
-    (scm-load "yaml_parser.scm")
+    (scm-load "yaml_parser.scm")))
-    (scm-load "yaml_writer.scm")))
 
 #(define (song-includes-data-path filename)
   (string-join
@@ -34,13 +33,14 @@
 #(define AUTHOR_DATA (if (defined? 'AUTHOR_DATA) AUTHOR_DATA (parse-yml-file (song-includes-data-path "authors.yml"))))
 #(define SONG_DATA (if (defined? 'SONG_DATA) SONG_DATA (parse-yml-file (song-includes-data-path "songs.yml"))))
 
+\include #(if (ly:version? < '(2 27 0)) "compat_lilypond_2_26.ily" "../void.ily")
 \include "merge_rests_engraver_override.ily"
 \include "basic_format_and_style_settings.ily"
 \include "eps_file_from_song_dir.ily"
+\include "embedded_songs.ily"
 \include "title_with_category_images.ily"
 \include "chord_settings.ily"
 \include "chordpro.ily"
-\include "data_extractor.ily"
 \include "transposition.ily"
 \include "markup_tag_groups_hack.ily"
 \include "verses_with_chords.ily"
@@ -56,6 +56,7 @@ HEADER = {}
 MUSIC = {}
 TEXT = \markuplist {}
 TEXT_PAGES = #f
+EMBEDDED_SONGS = #'()
 
 verseChords = {}
 firstVoice = {}

private_includes/base/basic_format_and_style_settings.ily

@@ -58,6 +58,7 @@ generalLayout = \layout {
     \RemoveEmptyStaves
     \override VerticalAxisGroup.remove-first = ##t
     \numericTimeSignature
+    rehearsalMarkFormatter = #format-mark-box-alphabet
     \overrideTimeSignatureSettings
       4/4               % timeSignatureFraction
       1/4               % baseMomentFraction
@@ -90,6 +91,22 @@ generalLayout = \layout {
      ((custom-size (ly:output-def-lookup base-layout 'size #f)))
      (if custom-size (layout-set-staff-size custom-size))))
 
+% Scores in Markups (z.B. inline-score) kopieren ihr \layout schon beim Parsen,
+% also bevor customized-layout greift. Deshalb nachträglich anpassen.
+#(define (customize-embedded-score-layouts! obj)
+   (cond
+     ((ly:score? obj)
+      (for-each
+        (lambda (def)
+          (let ((custom-size (ly:output-def-lookup def 'size #f))
+                (scope (ly:output-def-scope def)))
+            (if custom-size
+              (layout-set-absolute-staff-size-in-module scope (* custom-size (eval 'pt scope))))))
+        (ly:score-output-defs obj)))
+     ((pair? obj)
+      (customize-embedded-score-layouts! (car obj))
+      (customize-embedded-score-layouts! (cdr obj)))))
+
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 %%% kleine Helferlein:
 
@@ -138,50 +155,83 @@ romanStanza =
   #(define-music-function (parser location) ()
   #{ \override StanzaNumber.style = #'roman #})
 
+#(define (number-or-number-list? x) (or (number? x) (number-list? x)))
+
+% "1,4" -> (1 4); Einträge, die keine Zahl sind, bleiben Strings ("1b,2b" -> ("1b" "2b"))
+#(define (stanza-numbers-from-string str)
+  (map (lambda (s) (or (string->number s) s))
+       (remove string-null? (map string-trim-both (string-split str #\,)))))
+
+% Kein number? hier, sonst kann der Parser 1,4 nicht mehr als Liste lesen
+#(define (stanza-numbers? x) (or (number-list? x) (string? x)))
+
 override-stanza =
-#(define-music-function (parser location stanzanumbers) (number-list?)
+#(define-music-function (stanzanumbers) (number-or-number-list?)
 #{
-  \once \override StanzaNumber.details.custom-stanzanumber-override = #stanzanumbers
+  \once \override StanzaNumber.details.custom-stanzanumber-override = #(if (number? stanzanumbers) (list stanzanumbers) stanzanumbers)
 #}
 )
 
-#(define (handle-stanza-numbers context numbers number-formater)
+#(define (romanize-stanza-numbers numbers style)
-  (let* ((stanzanumbers (ly:assoc-get 'custom-stanzanumber-override (ly:assoc-get 'details (ly:context-grob-definition context 'StanzaNumber) '()) numbers))
+  (if (eq? style 'roman)
-         (stanza-style (ly:assoc-get 'style (ly:context-grob-definition context 'StanzaNumber)))
+      (map (lambda (n) (if (number? n) (format #f "~@r" n) n)) numbers)
-         (roman-format (lambda (stanzanumber) (format #f "~@r" stanzanumber))))
+      numbers))
-      (ly:context-set-property! context 'stanza
-        (make-pad-left-markup 1
-          (number-formater
-            (if (eq? stanza-style 'roman)
-                (map roman-format stanzanumbers)
-                stanzanumbers))))))
 
-#(define (stanza . stanzanumbers)
+#(define (format-stanza-numbers numbers style)
+  (string-join
+    (map (lambda (n) (format #f stanzaFormat n)) (romanize-stanza-numbers numbers style))
+    ", "))
+
+% Strophennummer, die erst beim Setzen aus den Eigenschaften des StanzaNumber-Grobs gebaut wird
+% (details.custom-stanza-type, details.custom-stanza-numbers, style, details.custom-inline-text).
+% So können \fstanza, \ref, \bridge und \repStartWithTag im selben Zeitschritt kombiniert werden.
+#(define-markup-command (formatted-stanza layout props) ()
+  #:properties ((details '()) (style #f))
+  (let* ((realstanza (ly:assoc-get 'custom-realstanza details #f))
+         (type (ly:assoc-get 'custom-stanza-type details 'verse))
+         (numbers (ly:assoc-get 'custom-stanzanumber-override details
+                    (ly:assoc-get 'custom-stanza-numbers details '())))
+         (inline-text (ly:assoc-get 'custom-inline-text details #f))
+         (inline-direction (ly:assoc-get 'custom-inline-direction details CENTER))
+         (rep-start (and inline-text (eqv? inline-direction LEFT)))
+         (roman-numbers (romanize-stanza-numbers numbers style))
+         (stanza-stencil
+           (and realstanza
+             (case type
+               ((ref) ((ly:output-def-lookup layout 'refMarkupFormatter) layout props roman-numbers))
+               ((bridge) ((ly:output-def-lookup layout 'bridgeMarkupFormatter) layout props roman-numbers))
+               (else (interpret-markup layout props (format-stanza-numbers numbers style))))))
+         (padded-stanza-stencil
+           (and stanza-stencil
+             (interpret-markup layout props (make-pad-left-markup 1 (make-stencil-markup stanza-stencil))))))
+    (if rep-start
+      (interpret-markup layout props
+        (make-concat-markup
+          (append
+            (if padded-stanza-stencil (list (make-stencil-markup padded-stanza-stencil) (make-hspace-markup 1)) '())
+            (list (make-override-markup '(font-series . normal) inline-text)))))
+      (or padded-stanza-stencil empty-stencil))))
+
+#(define (formatted-stanza-music type stanzanumbers)
 #{
   \once \override StanzaNumber.details.custom-realstanza = ##t % set this to signal that there is a real stanza and no repeat signs
-  \once \override StanzaNumber.details.custom-stanza-type = #'verse
+  \once \override StanzaNumber.details.custom-stanza-type = #type
   \once \override StanzaNumber.details.custom-stanza-numbers = #stanzanumbers
-  \applyContext
+  \stanza \markup \formatted-stanza
-  #(lambda (context)
+#})
-    (handle-stanza-numbers context stanzanumbers
+
-      (lambda (numbers) (string-join (map (lambda (n) (format #f stanzaFormat n)) numbers) ", "))))
+% \fstanza 1      -> "1."
-#}
+% \fstanza 1,4    -> "1., 4." (nur im Notenmodus, z.B. \chordverse { \fstanza 1,4 } ...)
-)
+% \fstanza "1,4"  -> "1., 4." (auch im \lyricmode, dort versteht LilyPond 1,4 nicht als Liste)
+fstanza =
+#(define-music-function (stanzanumbers) (stanza-numbers?)
+  (formatted-stanza-music 'verse
+    (if (string? stanzanumbers) (stanza-numbers-from-string stanzanumbers) stanzanumbers)))
 
 ref =
 #(define-music-function (stanzanumbers lyrics) ((number-list? (list)) ly:music?)
 #{ \lyricmode {
-    \once \override StanzaNumber.details.custom-realstanza = ##t % set this to signal that there is a real stanza and no repeat signs
+    #(formatted-stanza-music 'ref stanzanumbers)
-    \once \override StanzaNumber.details.custom-stanza-type = #'ref
-    \once \override StanzaNumber.details.custom-stanza-numbers = #stanzanumbers
-    \applyContext
-    #(lambda (context)
-      (handle-stanza-numbers context stanzanumbers
-        (lambda (numbers)
-          (make-on-the-fly-markup
-            (lambda (layout props m)
-              ((ly:output-def-lookup layout 'refMarkupFormatter) layout props numbers))
-            (make-null-markup)))))
     #lyrics
   }
 #}
@@ -190,43 +240,24 @@ ref =
 bridge =
 #(define-music-function (stanzanumbers lyrics) ((number-list? (list)) ly:music?)
 #{ \lyricmode {
-    \once \override StanzaNumber.details.custom-realstanza = ##t % set this to signal that there is a real stanza and no repeat signs
+    #(formatted-stanza-music 'bridge stanzanumbers)
-    \once \override StanzaNumber.details.custom-stanza-type = #'bridge
-    \once \override StanzaNumber.details.custom-stanza-numbers = #stanzanumbers
-    \applyContext
-    #(lambda (context)
-      (handle-stanza-numbers context stanzanumbers
-        (lambda (numbers)
-          (make-on-the-fly-markup
-            (lambda (layout props m)
-              ((ly:output-def-lookup layout 'bridgeMarkupFormatter) layout props numbers))
-            (make-null-markup)))))
     #lyrics
   }
 #}
 )
 
 % prints a repStart Sign as stanza if the tag 'repeats is kept.
-% if there was a stanza already set by the stanza function with StanzaNumber.details.custom-realstanza = ##t we set that also as stanza.
+% if there is a stanza set by \fstanza in the same moment, \formatted-stanza prints both.
 % Sets custom-inline-text for ChordPro export so it can collect the repeat sign separately
-repStartWithTag = \lyricmode {
+repStartWithTag =
+#(define-music-function () ()
+#{ \lyricmode {
   \tag #'repeats {
     \once \override StanzaNumber.details.custom-inline-text = \repStart
     \once \override StanzaNumber.details.custom-inline-direction = #LEFT
-    \applyContext
+    \stanza \markup \formatted-stanza
-    #(lambda (context)
-      (let ((lastStanza (ly:context-property context 'stanza))
-            (printLastStanza (ly:assoc-get 'custom-realstanza (ly:assoc-get 'details (ly:context-grob-definition context 'StanzaNumber) '()) #f))
-            (stanzaFontSeries (ly:assoc-get 'font-series (ly:context-grob-definition context 'StanzaNumber) 'normal)))
-      (ly:context-set-property! context 'stanza
-        (make-concat-markup
-          (if printLastStanza
-            (list (make-override-markup `(font-series . ,stanzaFontSeries) lastStanza) (make-hspace-markup 1) repStart)
-            (list repStart)
-            )))))
-    \once \override StanzaNumber.font-series = #'normal
   }
-}
+} #})
 
 repStopWithTag = \lyricmode {
   \tag #'repeats {
@@ -234,19 +265,19 @@ repStopWithTag = \lyricmode {
     \once \override StanzaNumber.details.custom-inline-direction = #RIGHT
     \once \override StanzaNumber.font-series = #'normal
     \once \override StanzaNumber.direction = 1
-    \set stanza = \markup { \pad-x-right #1 \repStop }
+    \stanza \markup { \pad-x-right #1 \repStop }
   }
 }
 
 rightHyphen = \lyricmode {
   \once \override StanzaNumber.font-series = #'normal
   \once \override StanzaNumber.direction = 1
-  \set stanza = "-"
+  \stanza "-"
 }
 
 leftHyphen = \lyricmode {
   \once \override StanzaNumber.font-series = #'normal
-  \set stanza = "-"
+  \stanza "-"
 }
 
 multiVerseSkips =
@@ -312,7 +343,7 @@ rufWithMarkup =
      \lyricmode {
        \once \override StanzaNumber.font-series = #'normal
        \once \override StanzaNumber.direction = 1
-       \set stanza = #text
+       \stanza #text
      }
    #})
 ruf =

private_includes/base/chord_settings.ily

@@ -155,7 +155,7 @@ Ensure_first_chord_after_line_break_printed_engraver =
                   ; the current chord handling implementation in lilypond uses 'begin-of-line-visible to mark repeated chords
                   (ly:grob-set-property! grob 'begin-of-line-visible #f))
                 (set! last-system-column-rank current-system-column-rank)
-                (ly:chord-name::after-line-breaking grob)
+                (item::enforce-musical-break-visibility grob)
                 )))))))
 
 % If you add this engraver to ChordNames Context chords get only printed on chordchanges and not at newline.

private_includes/base/compat_lilypond_2_26.ily

@@ -0,0 +1,11 @@
+% Abwärtskompatibilität zu LilyPond 2.26.
+% Wird von all.ily nur eingebunden, wenn die laufende LilyPond-Version älter als 2.27 ist.
+% Alles andere ist für die aktuelle 2.27 geschrieben.
+
+% Ab 2.27 gibt es \stanza als Musikfunktion (StanzaEvent), in 2.26 nur die Kontext-Property stanza.
+stanza =
+#(define-music-function (text) (markup?)
+  (context-spec-music (make-property-set 'stanza text) 'Bottom))
+
+% Ab 2.27 heißt ly:chord-name::after-line-breaking item::enforce-musical-break-visibility.
+#(define item::enforce-musical-break-visibility ly:chord-name::after-line-breaking)

private_includes/base/data_extractor.ily

@@ -1,550 +0,0 @@
-%%% Extrahiert Informationen aus einem ly:music-Objekt und liefert eine alist
-%%% mit String-Werten zurueck (z.B. ((time . "4/4") (key . "d minor"))).
-%%% Benoetigt LilyPond >= 2.26.
-
-%% note-name->lily-string liegt im Modul (lily display-lily).
-#(use-modules (lily display-lily))
-
-#(begin
-
-   ;; --- Taktangabe --------------------------------------------------------
-
-   ;; Numerator einer Taktangabe kann eine Zahl oder eine Liste sein.
-   (define (numerator->string num)
-     (if (list? num)
-         (string-join (map number->string num) "+")
-         (number->string num)))
-
-   ;; Ein einzelner Bruch ist ein Paar (numerator . denominator), der
-   ;; Numerator eine Zahl oder eine Liste (z.B. 3+3/8).
-   (define (fraction->string frac)
-     (string-append (numerator->string (car frac)) "/"
-                    (number->string (cdr frac))))
-
-   ;; Liefert die Taktangabe als String (z.B. "4/4", "3+3/8" oder
-   ;; "3+3/8 + 2/8") oder #f. time-signature ist ein Bruch oder bei
-   ;; zusammengesetzten Taktarten (\timeAbbrev, \compoundMeter) eine
-   ;; Liste von Bruechen.
-   (define (time-music->string m)
-     (let ((ts (ly:music-property m 'time-signature)))
-       (and (pair? ts)
-            (if (number? (cdr ts))
-                (fraction->string ts)
-                (string-join (map fraction->string ts) " + ")))))
-
-   ;; --- Tempo ---------------------------------------------------------------
-
-   ;; Liefert die Tempoangabe als String (z.B. "4 = 130", "4. = 60-70",
-   ;; "Allegro" oder "Allegro (4 = 130)") oder #f.
-   (define (tempo-music->string m)
-     (let* ((unit (ly:music-property m 'tempo-unit))
-            (count (ly:music-property m 'metronome-count))
-            (text (ly:music-property m 'text))
-            (unit-s (and (ly:duration? unit)
-                         (string-append
-                          (number->string (expt 2 (ly:duration-log unit)))
-                          (make-string (ly:duration-dot-count unit) #\.))))
-            (count-s (cond ((number? count) (number->string count))
-                           ((pair? count) (ly:format "~a-~a" (car count) (cdr count)))
-                           (else #f)))
-            (metronome-s (and unit-s count-s (string-append unit-s " = " count-s)))
-            (text-s (and (markup? text) (markup->string text))))
-       (cond
-        ((and text-s metronome-s) (string-append text-s " (" metronome-s ")"))
-        (metronome-s metronome-s)
-        (text-s text-s)
-        (else #f))))
-
-   ;; --- Tonart ------------------------------------------------------------
-
-   ;; Liefert die Tonart als String (z.B. "d minor" oder "c major") oder #f.
-   ;; Vorgehen wie in LilyPonds eigenem \displayMusic (define-music-display-
-   ;; methods.scm): pitch-alist nach c zuruecktransponieren und mit den
-   ;; bekannten Modus-Definitionen vergleichen. note-name->lily-string liefert
-   ;; den Grundton in der aktuell eingestellten Notensprache.
-   (define (key-music->string m)
-     (let ((tonic (ly:music-property m 'tonic))
-           (alist (ly:music-property m 'pitch-alist)))
-       (and (ly:pitch? tonic) (pair? alist)
-            (let* ((c-alist (ly:transpose-key-alist alist (- tonic)))
-                   (mode (any (lambda (mode)
-                                (and (equal? (ly:parser-lookup mode) c-alist)
-                                     (symbol->string mode)))
-                              '(major minor))))
-              (and mode
-                   (string-append (symbol->string (note-name->lily-string tonic))
-                                  " " mode))))))
-
-   ;; --- Header-Metadaten ----------------------------------------------------
-
-   ;; Header-Felder, die eigentlich Layoutsachen sind (gehoerten nach paper)
-   ;; und deshalb nicht mit exportiert werden.
-   (define ignored-header-fields
-     '(titlesize titletopspace tagline between-poet-and-composer-markup))
-
-   ;; categories ist im Header ein String mit Leerzeichen ("trist satz")
-   ;; und wird als Liste von Woertern exportiert.
-   (define (header-value key value)
-     (if (and (eq? key 'categories) (string? value))
-         (string-tokenize value)
-         value))
-
-   ;; Nimmt einen Bookpart entgegen (wie HEADER aus pool_bottom.ily) und
-   ;; liefert dessen Header-Felder als alist, z.B.
-   ;; ((title . "Ako umram") (authors . (("..." text melody))) ...).
-   ;; Die Werte bleiben unveraendert, wie sie im \header definiert wurden
-   ;; (Strings, Listen, Markups ...).
-   (define (bookpart->header-alist bookpart)
-     (let ((header (ly:book-header bookpart)))
-       (if (module? header)
-           (sort
-            (filter-map (lambda (entry)
-                          (and (variable-bound? (cdr entry))
-                               (not (memq (car entry) ignored-header-fields))
-                               (cons (car entry)
-                                     (header-value (car entry)
-                                                   (variable-ref (cdr entry))))))
-                        (module-map cons header))
-            (lambda (a b)
-              (string<? (symbol->string (car a))
-                        (symbol->string (car b)))))
-           '())))
-
-   ;; --- Lyrics --------------------------------------------------------------
-
-   ;; Silbentext (String oder Markup) als String. Eine Tilde verbindet als
-   ;; Lyric-Bindebogen zwei Woerter auf einer Note und wird zum Leerzeichen.
-   (define (syllable->string text)
-     (let ((s (cond ((string? text) text)
-                    ((markup? text) (markup->string text))
-                    (else ""))))
-       (string-map (lambda (c) (if (char=? c #\~) #\space c)) s)))
-
-   ;; Stanza-Beschriftung, wie sie gedruckt wuerde; vgl. handle-stanza-numbers
-   ;; bzw. refMarkupFormatter/bridgeMarkupFormatter in
-   ;; basic_format_and_style_settings.ily. text ist ein direkt per
-   ;; \set stanza = "..." gesetzter Wert und gewinnt. Mit roman? werden die
-   ;; Nummern roemisch formatiert (\romanStanza, z.B. fremdsprachige
-   ;; Originalstrophen).
-   (define (stanza-label type numbers text roman?)
-     (define (number->label n)
-       (if roman? (format #f "~@r" n) n))
-     (define (joined-numbers)
-       (string-join (map (lambda (n) (ly:format "~a" (number->label n))) numbers)
-                    ", "))
-     (define (formatted plain with-numbers)
-       (if (null? numbers)
-           (ly:parser-lookup plain)
-           (ly:format (ly:parser-lookup with-numbers) (joined-numbers))))
-     (cond
-      (text text)
-      ((eq? type 'ref) (formatted 'refString 'refStringWithNumbers))
-      ((eq? type 'bridge) (formatted 'bridgeString 'bridgeStringWithNumbers))
-      ((pair? numbers)
-       (string-join
-        (map (lambda (n)
-               (format #f (ly:parser-lookup 'stanzaFormat) (number->label n)))
-             numbers)
-        ", "))
-      (else "")))
-
-   ;; Wandelt ein Lyrics-Music-Objekt (eine Zeile aus \addlyrics bzw. das
-   ;; Argument von \chordlyrics) in eine Liste von Eintraegen der Form
-   ;; (marked? nummern . ((stanza . "1.") (type . verse) (text . "Auf die ...")))
-   ;; Silben werden an HyphenEvents wieder zu Woertern zusammengesetzt.
-   ;; Strophengrenzen ergeben sich aus den StanzaNumber-Overrides von
-   ;; #(stanza n), \ref und \bridge sowie aus \set stanza = "...".
-   ;; marked? ist #f fuer Fortsetzungsfragmente: Abschnitte ohne Marker oder
-   ;; mit dem Zeilenumbruch-Marker \set stanza = "-" (right-/leftHyphen).
-   ;; \set stanza mit Markup-Wert (Wiederholungszeichen, "D.S." usw.) ist
-   ;; reine Dekoration mitten im Vers und beginnt keine neue Strophe.
-   (define (lyric-line->stanzas lyrics)
-     (let ((stanzas '())    ; fertige Eintraege, rueckwaerts
-           (words '())      ; fertige Woerter der aktuellen Strophe, rueckwaerts
-           (word "")        ; offene Silbenkette
-           (type #f)        ; 'verse / 'ref / 'bridge
-           (numbers '())    ; Strophennummern
-           (set-label #f)   ; direkt gesetztes \set stanza = "..."
-           (roman #f)       ; \romanStanza: Nummern roemisch formatieren
-           (pending-override #f)  ; \override-stanza vor dem naechsten Marker
-           (override-numbers #f)) ; gedruckte Nummern der aktuellen Strophe
-       (define (flush-word!)
-         (unless (string-null? word)
-           (set! words (cons word words))
-           (set! word "")))
-       (define (flush-stanza!)
-         (flush-word!)
-         (when (or type set-label (pair? words))
-           (let ((display-numbers (or override-numbers numbers)))
-             (set! stanzas
-                   (cons (cons* (if (or type (and set-label (not (string=? set-label "-")))) #t #f)
-                                display-numbers
-                                (list (cons 'stanza (stanza-label type display-numbers set-label roman))
-                                      (cons 'type (or type 'verse))
-                                      (cons 'text (string-join (reverse words) " "))))
-                         stanzas)))
-           (set! words '())
-           (set! type #f)
-           (set! numbers '())
-           (set! set-label #f)
-           (set! override-numbers #f)))
-       ;; Ein neuer Marker beendet die laufende Strophe, sobald schon Text da ist.
-       (define (marker!)
-         (when (or (pair? words) (not (string-null? word)))
-           (flush-stanza!)))
-       (define (handle-lyric-event m)
-         (let ((s (syllable->string (ly:music-property m 'text)))
-               (hyphen? (any (lambda (a)
-                               (eq? (ly:music-property a 'name) 'HyphenEvent))
-                             (ly:music-property m 'articulations '()))))
-           ;; "_"-Skips (Melisma-Platzhalter) kommen als " " an und werden
-           ;; ignoriert; ein an einem Trennstrich offenes Wort ("ru -- _ hig")
-           ;; laeuft darueber weiter.
-           (unless (string-null? (string-trim-both s))
-             (set! word (string-append word s))
-             (unless hyphen? (flush-word!)))))
-       (define (handle-override m)
-         (when (eq? (ly:music-property m 'symbol) 'StanzaNumber)
-           (let ((path (ly:music-property m 'grob-property-path))
-                 (value (ly:music-property m 'grob-value)))
-             (cond
-              ((equal? path '(details custom-stanza-type))
-               (marker!)
-               (set! type value)
-               ;; \override-stanza wirkt (\once) auf den naechsten Marker
-               (set! override-numbers pending-override)
-               (set! pending-override #f))
-              ((equal? path '(details custom-stanza-numbers))
-               (marker!)
-               (set! numbers (if (list? value) value (list value))))
-              ((equal? path '(details custom-stanzanumber-override))
-               (set! pending-override (if (list? value) value (list value))))
-              ((equal? path '(style))
-               (set! roman (eq? value 'roman)))))))
-       (define (handle-set m)
-         (let ((value (ly:music-property m 'value)))
-           ;; Nur String-Werte; Markups (Wiederholungszeichen etc.) sind
-           ;; Dekoration mitten im Vers und keine Strophengrenze.
-           (when (and (eq? (ly:music-property m 'symbol) 'stanza)
-                      (string? value))
-             (marker!)
-             (set! set-label value))))
-       (define (walk m)
-         (case (ly:music-property m 'name)
-           ((LyricEvent) (handle-lyric-event m))
-           ((OverrideProperty) (handle-override m))
-           ((PropertySet) (handle-set m))
-           (else
-            (let ((element (ly:music-property m 'element)))
-              (if (ly:music? element) (walk element))
-              (for-each (lambda (e) (if (ly:music? e) (walk e)))
-                        (ly:music-property m 'elements))))))
-       (walk lyrics)
-       (flush-stanza!)
-       (merge-reprinted (reverse stanzas))))
-
-   ;; Beim Zeilenumbruch im Notenbild wird die Strophennummer manchmal erneut
-   ;; gedruckt (z.B. \firstVerseB #(stanza 1) \firstVerseC). Ein Marker
-   ;; direkt nach einer Strophe mit gleicher Kennung oder deren
-   ;; Nummern-Obermenge (#(stanza 2 3) nach Strophe 2) setzt diese fort,
-   ;; statt eine neue Strophe zu beginnen.
-   (define (merge-reprinted entries)
-     (let loop ((remaining entries) (acc '()))
-       (if (null? remaining)
-           (reverse acc)
-           (let ((entry (car remaining)))
-             (if (and (pair? acc)
-                      (car entry)          ; aktueller Eintrag markiert
-                      (car (car acc))      ; vorheriger Eintrag markiert
-                      (let* ((prev (car acc))
-                             (prev-alist (cddr prev))
-                             (alist (cddr entry))
-                             (prev-numbers (cadr prev))
-                             (prev-label (assq-ref prev-alist 'stanza)))
-                        (or (and (not (string-null? prev-label))
-                                 (string=? prev-label (assq-ref alist 'stanza)))
-                            (and (eq? (assq-ref prev-alist 'type)
-                                      (assq-ref alist 'type))
-                                 (pair? prev-numbers)
-                                 (every (lambda (n) (member n (cadr entry)))
-                                        prev-numbers)))))
-                 (begin
-                   (append-fragment-text! (cddr (car acc)) (cddr entry))
-                   (loop (cdr remaining) acc))
-                 (loop (cdr remaining) (cons entry acc)))))))
-
-   ;; Haengt den Text eines Fortsetzungsfragments an eine Strophe an.
-   (define (append-fragment-text! target fragment)
-     (let ((target-cell (assq 'text target))
-           (fragment-text (assq-ref fragment 'text)))
-       (unless (string-null? fragment-text)
-         (set-cdr! target-cell
-                   (if (string-null? (cdr target-cell))
-                       fragment-text
-                       (string-append (cdr target-cell) " " fragment-text))))))
-
-   ;; Fuegt die Strophen-Eintraege mehrerer Lyric-Zeilen (Ergebnisse von
-   ;; lyric-line->stanzas) zu einer flachen Strophenliste zusammen. Manche
-   ;; Lieder verteilen eine Strophe auf mehrere Zeilen unter den Noten
-   ;; (Fragmente mit \set stanza = "-" bzw. ohne Marker): Fortsetzungen
-   ;; werden innerhalb einer Zeile an die vorhergehende markierte Strophe
-   ;; angehaengt; Zeilen ganz ohne markierte Strophen positionsweise an die
-   ;; markierten Strophen der letzten Zeile, die welche hatte.
-   (define (merge-lyric-lines lines)
-     (let ((result '())        ; fertige Strophen-alists, rueckwaerts
-           (last-marked '()))  ; markierte alists der letzten markierten Zeile
-       (for-each
-        (lambda (line)
-          (let ((line-marked (filter-map (lambda (e) (and (car e) (cddr e))) line)))
-            (if (and (null? line-marked) (pair? last-marked))
-                ;; Zeile nur aus Fortsetzungen: k-tes Fragment an k-te
-                ;; markierte Strophe der Vorzeile, Ueberzaehlige an deren letzte.
-                (let loop ((entries line) (targets last-marked))
-                  (when (pair? entries)
-                    (append-fragment-text! (car targets) (cddar entries))
-                    (loop (cdr entries)
-                          (if (null? (cdr targets)) targets (cdr targets)))))
-                ;; Zeile mit markierten Strophen (oder erste Zeile ueberhaupt):
-                ;; Fortsetzungen an die vorhergehende Strophe der Zeile.
-                (begin
-                  (let loop ((entries line)
-                             (prev (if (pair? last-marked) (last last-marked) #f)))
-                    (when (pair? entries)
-                      (let ((marked? (caar entries))
-                            (stanza-alist (cddar entries)))
-                        (if (or marked? (not prev))
-                            (begin
-                              (set! result (cons stanza-alist result))
-                              (loop (cdr entries) stanza-alist))
-                            (begin
-                              (append-fragment-text! prev stanza-alist)
-                              (loop (cdr entries) prev))))))
-                  (when (pair? line-marked)
-                    (set! last-marked line-marked))))))
-        lines)
-       (reverse result)))
-
-   ;; Gruppiert alle LyricCombineMusic-Objekte im music-Baum nach ihrer
-   ;; Stimme (associated-context, das \addlyrics/\lyricsto zuweisen).
-   ;; Liefert eine Liste von Gruppen (je eine Liste von Lyrics-Music-
-   ;; Objekten) in der Reihenfolge, in der die Stimmen zuerst auftauchen.
-   (define (voice-groups music)
-     (let* ((combines (extract-named-music music 'LyricCombineMusic))
-            (contexts (delete-duplicates
-                       (map (lambda (c) (ly:music-property c 'associated-context))
-                            combines))))
-       (map (lambda (ctx)
-              (map (lambda (c) (ly:music-property c 'element))
-                   (filter (lambda (c)
-                             (equal? (ly:music-property c 'associated-context) ctx))
-                           combines)))
-            contexts)))
-
-   ;; Liefert die Strophen aller Stimmen unter den Noten, die selbst echte
-   ;; Strophen/Refrains/Bridges tragen (mindestens einen markierten
-   ;; Abschnitt haben, vgl. lyric-line->stanzas) -- filtert damit rein
-   ;; dekorative Gegen- oder Echostimmen heraus (z.B. wiederholte
-   ;; Lautmalerei ohne eigene Strophennummer). "Die erste Stimme im
-   ;; Dokument" ist dafuer kein verlaessliches Kriterium: welche Stimme
-   ;; die Hauptmelodie mit dem vollstaendigen Strophentext singt, wechselt
-   ;; von Lied zu Lied (mal Stimme 1, mal 2, je nach Satz).
-   ;; Qualifizierende Stimmen werden zusammengefuehrt (verschiedene
-   ;; Sprachfassungen tragen z.B. beide eigene Strophen); dabei bildet die
-   ;; Stimme mit den meisten eigenen Strophen ('verse, nicht Ref/Bridge)
-   ;; das Rueckgrat, in das die anderen einsortiert werden -- sonst wuerde
-   ;; ein von mehreren Stimmen gemeinsam gesungener Refrain, der im
-   ;; Dokument vor der eigentlichen Strophe auftaucht, deren Platz vor der
-   ;; Strophe 1 belegen.
-   (define (main-voice-lyrics music)
-     (define (verse-count stanzas)
-       (count (lambda (e) (eq? (assq-ref e 'type) 'verse)) stanzas))
-     (define (any-marked? lines) (any (lambda (line) (any car line)) lines))
-     (let* ((groups (map (lambda (group) (map lyric-line->stanzas group))
-                         (voice-groups music)))
-            (with-marks (filter any-marked? groups))
-            ;; Der Ausschluss unmarkierter Stimmen lohnt nur, wenn es
-            ;; ueberhaupt eine ALTERNATIVE gibt: hat KEINE Stimme einen
-            ;; echten Strophenmarker, gibt es kein "Rueckgrat" zum
-            ;; Einsortieren -- dann wie frueher nur die erste Stimme nehmen
-            ;; (sonst wuerden z.B. mehrere Satzstimmen mit identischem,
-            ;; unmarkiertem Text ihren Kehrreim mehrfach liefern, weil sich
-            ;; unmarkierte Eintraege ohne Strophennummer nicht als Duplikat
-            ;; erkennen lassen). Nur EINE Stimme insgesamt ist ein
-            ;; Sonderfall davon (erste = einzige).
-            (qualifying (cond
-                         ((pair? with-marks) with-marks)
-                         ((pair? groups) (list (car groups)))
-                         (else '())))
-            (merged-per-group (map merge-lyric-lines qualifying))
-            (ranked (sort (iota (length merged-per-group))
-                          (lambda (a b) (> (verse-count (list-ref merged-per-group a))
-                                           (verse-count (list-ref merged-per-group b)))))))
-       (fold (lambda (i acc) (add-missing-stanzas acc (list-ref merged-per-group i)))
-             '() ranked)))
-
-   ;; --- Textseiten-Strophen aus dem Render-Collector ------------------------
-
-   ;; Liest die Strophen der Textseiten aus dem per-Song-Store (chordpro.ily),
-   ;; den der ChordPro_score_collector beim Rendern der \chordlyrics-Scores
-   ;; fuellt. Dort ist Tag-Filterung, \override-stanza usw. bereits von
-   ;; LilyPond selbst entschieden -- unsichtbare Verse tauchen gar nicht
-   ;; erst auf. Die Dokumentreihenfolge liefert
-   ;; chordpro-song-ordered-verse-indices (die Interpretation laeuft
-   ;; rueckwaerts und bei mehrspaltigen group-verses verschraenkt).
-   ;; Liefert Eintraege wie lyric-line->stanzas:
-   ;; ((stanza . "2.") (type . verse) (text . "Die Haeuser ..."))
-   (define (collector-song->stanzas song)
-     ;; Silben eines Verses in Sammelreihenfolge; Eintrag: (moment text hyphen? idx)
-     (define (verse-syllables idx)
-       (reverse (filter (lambda (s) (= (cadddr s) idx))
-                        (chordpro-song-syllables song))))
-     ;; Gedruckte Labels koennen Wiederholungszeichen tragen ("2.𝄆") --
-     ;; die gehoeren nicht ins Label.
-     (define (clean-label s)
-       (string-trim-both
-        (string-delete (lambda (c) (memv c '(#\𝄆 #\𝄇))) s)))
-     ;; Silben zu Woertern: Trennstriche verbinden, "_"-Extender (kommen als
-     ;; Whitespace an) werden ueberlaufen, ohne das offene Wort zu schliessen.
-     (define (syllables->text syls)
-       (let loop ((rest syls) (word "") (words '()))
-         (if (null? rest)
-             (string-join
-              (reverse (if (string-null? word) words (cons word words)))
-              " ")
-             (let* ((s (syllable->string (cadr (car rest))))
-                    (hyphen? (caddr (car rest))))
-               (if (string-null? (string-trim-both s))
-                   (loop (cdr rest) word words)
-                   (if hyphen?
-                       (loop (cdr rest) (string-append word s) words)
-                       (loop (cdr rest) ""
-                             (cons (string-append word s) words))))))))
-     (filter-map
-      (lambda (idx)
-        (let ((syls (verse-syllables idx))
-              (entry (assoc idx (chordpro-song-stanza-numbers song))))
-          (and (pair? syls)
-               (list (cons 'stanza (clean-label
-                                    (or (and entry (cadr entry)) "")))
-                     (cons 'type (or (and entry (caddr entry)) 'verse))
-                     (cons 'text (syllables->text syls))))))
-      (chordpro-song-ordered-verse-indices song)))
-
-   ;; Dieselbe Strophe? Gleiche Kennung allein reicht nicht: zweisprachige
-   ;; Lieder nutzen dieselben Nummern fuer Uebersetzung und Original. Die
-   ;; Texte muessen sich auch aehneln (mindestens die Haelfte der Woerter
-   ;; der kuerzeren Fassung kommt in der laengeren vor).
-   (define (same-stanza-text? a b)
-     (define (word-list s)
-       (map string-downcase (string-tokenize s char-set:letter)))
-     (let* ((wa (word-list a))
-            (wb (word-list b))
-            (shorter (if (<= (length wa) (length wb)) wa wb))
-            (longer  (if (<= (length wa) (length wb)) wb wa)))
-       (or (null? shorter)
-           (>= (count (lambda (w) (member w longer)) shorter)
-               (/ (length shorter) 2)))))
-
-   ;; Wie merge-stanza-lists, aber bei Konflikt gewinnt BASE statt der
-   ;; einzumischenden Liste: fuer das Zusammenfuehren mehrerer Hauptstimmen-
-   ;; Kandidaten (main-voice-lyrics), wo die 'reichste' Stimme (meiste
-   ;; eigene Strophen) die kanonische Fassung liefert und andere Stimmen
-   ;; nur FEHLENDE Strophen ergaenzen duerfen -- z.B. wenn Sopran und Alt
-   ;; beide "1." tragen, der Alt aber eine gekuerzte Textvariante singt
-   ;; (vgl. Sieh_des_Herbstes_Geisteshelle: infotext "Strophenteile in
-   ;; Klammern sind die Textvarianten im Alt").
-   (define (add-missing-stanzas base additional)
-     (fold
-      (lambda (entry acc)
-        (let* ((key (assq-ref entry 'stanza))
-               (found (and (not (string-null? key))
-                          (not (string=? key "-"))
-                          (find (lambda (e) (and (equal? (assq-ref e 'stanza) key)
-                                                 (same-stanza-text?
-                                                  (assq-ref e 'text)
-                                                  (assq-ref entry 'text))))
-                                acc))))
-          (if found acc (append acc (list entry)))))
-      base
-      additional))
-
-   ;; Fuegt Musik- und Textseiten-Strophen zusammen: gleiche Strophen nur
-   ;; einmal, wobei die Fassung aus den Textseiten die unter den Noten
-   ;; ersetzt (dort steht meist die vollstaendige Fassung).
-   (define (merge-stanza-lists music-stanzas text-stanzas)
-     (let loop ((merged music-stanzas) (remaining text-stanzas))
-       (if (null? remaining)
-           merged
-           (let* ((entry (car remaining))
-                  (key (assq-ref entry 'stanza))
-                  (found (and (not (string-null? key))
-                              (not (string=? key "-"))
-                              (find (lambda (e)
-                                      (and (equal? (assq-ref e 'stanza) key)
-                                           (same-stanza-text?
-                                            (assq-ref e 'text)
-                                            (assq-ref entry 'text))))
-                                    merged))))
-             (loop (if found
-                       (map (lambda (e) (if (eq? e found) entry e)) merged)
-                       (append merged (list entry)))
-                   (cdr remaining))))))
-
-   ;; Extrahiert alle Strophen/Refrain/Bridge-Texte eines Liedes: die Strophen
-   ;; unter den Noten aus music (die Hauptstimme(n), siehe main-voice-lyrics),
-   ;; die Textstrophen aus dem Render-Collector-Store des Liedes (song, darf
-   ;; #f sein).
-   (define (extract-lyrics music song)
-     (merge-stanza-lists
-      (main-voice-lyrics music)
-      (if song (collector-song->stanzas song) '())))
-
-   ;; --- Hauptfunktion -----------------------------------------------------
-
-   ;; Liefert das erste Music-Objekt mit gegebenem Namen (oder #f).
-   (define (first-named-music music music-name)
-     (let ((matches (extract-named-music music music-name)))
-       (and (pair? matches) (car matches))))
-
-   ;; Nimmt ly:music entgegen und liefert eine alist mit String-Werten.
-   (define (music->data-alist music)
-     (let* ((time-m  (first-named-music
-                      music '(TimeSignatureMusic ReferenceTimeSignatureMusic)))
-            (key-m   (first-named-music music 'KeyChangeEvent))
-            (tempo-m (first-named-music music 'TempoChangeEvent))
-            (time-s  (and time-m  (time-music->string time-m)))
-            (key-s   (and key-m   (key-music->string key-m)))
-            (tempo-s (and tempo-m (tempo-music->string tempo-m))))
-       (append
-        (if time-s  (list (cons 'time time-s)) '())
-        (if key-s   (list (cons 'key key-s)) '())
-        (if tempo-s (list (cons 'tempo tempo-s)) '()))))
-
-    ;; song ist der per-Song-Store-Eintrag aus chordpro.ily (oder #f, wenn
-    ;; keine Textseiten gerendert wurden) -- er liefert die Textseiten-
-    ;; Strophen. Darf erst NACH dem Rendern der Textseiten aufgerufen
-    ;; werden (delayed stencil), vorher ist der Store leer. song-id ist
-    ;; der Liedname (Einzellied: Ausgabename; Buch: der bei \includeSong
-    ;; angegebene Dateiname) und landet unter dem Key song_id.
-    (define (extract-song-data header music song song-id)
-      (let ((header-alist (bookpart->header-alist header))
-            (music-alist (music->data-alist music))
-            (lyrics-list (extract-lyrics music song)))
-        (append header-alist
-                (list (cons 'song_id song-id)
-                      (cons 'musical music-alist)
-                      (cons 'lyrics lyrics-list)))))
-
-    ;; Unsichtbarer Stencil fuer die Einzellied-YAML: schreibt <key>.yml
-    ;; per delay-stencil-evaluation erst bei der Ausgabe, wenn der
-    ;; Render-Collector alle Textseiten-Strophen gesammelt hat. header und
-    ;; music werden beim Anhaengen (Parse-Zeit in layout_bottom) gebunden.
-    (define (yaml-delayed-song-write key header music)
-      (ly:make-stencil
-       `(delay-stencil-evaluation
-         ,(delay (begin
-                   (scm->yml-file (string-append key ".yml")
-                                  (extract-song-data header music
-                                                     (hash-ref chordpro-song-store key)
-                                                     key))
-                   empty-stencil))))))

private_includes/base/embedded_songs.ily

@@ -0,0 +1,157 @@
+%% Mehrere Lieder in einer Liederdatei (z.B. zwei Lieder auf einer Seite)
+%%
+%% Das erste Lied ist das Hauptlied (HEADER), alle weiteren werden als
+%% eingebettete Lieder angemeldet. Eingebettete Lieder bekommen eigene
+%% Eintraege im Inhaltsverzeichnis, in den Kategorie-, Autoren- und
+%% Kapitelverzeichnissen, im PDF-Inhaltsverzeichnis, in der toc.csv und
+%% eine eigene Liednummer. Im Footer steht die Songinfo des letzten
+%% eingebetteten Lieds (abschaltbar mit footersong = ##f im HEADER bzw. mit
+%% footersong = \andereslied umstellbar), die Songinfo des Hauptlieds wird
+%% mit \songinfo-of selbst platziert.
+%%
+%% Beispiel:
+%%
+%%   \include "../../lilypond-song-includes/liedbausteine/lied_a.ly"
+%%   liedA = \captureSong
+%%   \include "../../lilypond-song-includes/liedbausteine/lied_b.ly"
+%%   liedB = \captureSong
+%%
+%%   TEXT = \markuplist {
+%%     \songinfo-of \liedA
+%%     \vspace #2
+%%     \embedded-song-title \liedB
+%%     \vspace #.5
+%%     \score { \songMusic \liedB \layout { \LAYOUT } }
+%%     \with-song \liedB {
+%%       \chordlyrics \secondVerse
+%%     }
+%%   }
+%%
+%%   \restoreSong \liedA
+%%   \embedSong \liedB
+%%   \include "public_includes/layout_bottom.ily"
+%%
+%% \captureSong sichert den Header (basicSongInfo) und die Variablen aus
+%% captured-song-variable-names, damit das naechste \include sie nicht
+%% ueberschreibt. Das Ergebnis ist ein normales Header-Modul, es kann also
+%% auch in \header { \liedA } verwendet werden.
+%%
+%% \restoreSong setzt basicSongInfo, HEADER und diese Variablen zurueck,
+%% TEXT aber nicht. TEXT also vor \restoreSong schreiben, solange darin noch
+%% Variablen des zuletzt eingebundenen Lieds (\secondVerse usw.) stehen.
+%%
+%% Ohne \with-song beziehen sich Strophen mit Akkorden auf das Hauptlied.
+%%
+%% Alle Verzeichniseintraege zeigen auf die erste Seite des Hauptlieds.
+
+#(define captured-song-variable-names '(MUSIC global firstVoice verseChords))
+
+#(define (song-variable song name)
+  (assq-ref (module-ref song 'captured-song-variables '()) name))
+
+#(define (extract-and-check-vars-from-module headermodule varlist)
+  (let* ((headervars (if (module? headermodule) (hash-map->list cons (struct-ref headermodule 0)) '()))
+         (extract-var-and-check (lambda (headervar)
+           (let* ((variableref (assoc-ref headervars headervar))
+                  (extracted (if variableref (variable-ref variableref) #f)))
+              (if (and extracted (not (and (string? extracted) (string-null? extracted)))) extracted #f)))))
+    (map (lambda (varsymbol)
+      (cons varsymbol (extract-var-and-check varsymbol))
+    ) varlist)))
+
+% Text des PDF-Lesezeichens eines Lieds, #f wenn es keins bekommt.
+% Gleiche Regel wie in build-full-title.
+#(define (song-pdf-bookmark-title headermodule)
+  (let* ((vars (extract-and-check-vars-from-module headermodule '(title starttext)))
+         (title (assq-ref vars 'title))
+         (starttext (assq-ref vars 'starttext))
+         (as-string (lambda (m) (if (markup? m) (markup->string m) ""))))
+    (cond ((and title starttext) (string-append (as-string starttext) " | " (as-string title)))
+          (title (as-string title))
+          (starttext (string-append (as-string starttext) " | "))
+          (else #f))))
+
+#(define (embedded-song-list songs)
+  (if (list? songs) (filter module? songs) '()))
+
+#(define (embedded-songs-of-header headermodule)
+  (if (module? headermodule)
+    (embedded-song-list (module-ref headermodule 'embeddedsongs '()))
+    '()))
+
+% Ersetzt alle header:*-Properties durch die Felder aus headermodule, damit
+% keine Felder des Hauptlieds in das andere Lied durchsickern.
+#(define (header-module->props headermodule props)
+  (let ((header-key? (lambda (entry)
+          (and (pair? entry) (symbol? (car entry))
+               (string-prefix? "header:" (symbol->string (car entry)))))))
+    (cons
+      (map (lambda (kv) (cons (symbol-append 'header: (car kv)) (cdr kv)))
+           (ly:module->alist headermodule))
+      (map (lambda (alist) (remove header-key? alist)) props))))
+
+captureSong =
+#(define-scheme-function () ()
+  (let ((song (make-module)))
+    (ly:module-copy song basicSongInfo)
+    (module-define! song 'captured-song-variables
+      (filter-map
+        (lambda (name)
+          (let ((value (ly:parser-lookup name)))
+            (and (not (null? value)) (cons name value))))
+        captured-song-variable-names))
+    song))
+
+% Stellt basicSongInfo, HEADER und die gesicherten Variablen eines Lieds
+% wieder her, als waere es das zuletzt eingebundene.
+restoreSong =
+#(define-void-function (song) (module?)
+  (for-each
+    (lambda (kv) (ly:parser-define! (car kv) (cdr kv)))
+    (module-ref song 'captured-song-variables '()))
+  (ly:parser-define! 'basicSongInfo song)
+  (ly:parser-define! 'HEADER #{ \bookpart { \header { $song } } #}))
+
+embedSong =
+#(define-void-function (song) (module?)
+  (set! EMBEDDED_SONGS (append EMBEDDED_SONGS (list song))))
+
+songMusic =
+#(define-music-function (song) (module?)
+  (let ((music (song-variable song 'MUSIC)))
+    (if (ly:music? music) music (make-music 'SequentialMusic))))
+
+% Strophen, \fromproperty #'header:... usw. beziehen sich innerhalb auf das
+% angegebene Lied. Die Transposition des Hauptlieds wird nicht uebernommen.
+#(define-markup-list-command (with-song layout props song args) (module? markup-list?)
+  (let* ((music-or-empty (lambda (name)
+           (let ((music (song-variable song name)))
+             (if (ly:music? music) music (make-music 'SequentialMusic)))))
+         (verseChords (music-or-empty 'verseChords))
+         (global (music-or-empty 'global))
+         (firstVoice (music-or-empty 'firstVoice)))
+    (interpret-markup-list layout
+      (prepend-alist-chain 'verse-chords #{ \chords { $verseChords } #}
+        (prepend-alist-chain 'verse-reference-voice #{ $global $firstVoice #}
+          (prepend-alist-chain 'transposition (cons #f #f)
+            (header-module->props song props))))
+      args)))
+
+#(define-markup-command (songinfo-of layout props song) (module?)
+  (interpret-markup layout (header-module->props song props)
+    (make-fractional-line-width-markup (make-songinfo-content-markup))))
+
+#(define-markup-command (embedded-song-title layout props song) (module?)
+  (interpret-markup layout (header-module->props song props)
+    (make-fill-line-markup (list (ly:output-def-lookup layout 'defaultTitleMarkup)))))
+
+% PDF-Lesezeichen der eingebetteten Lieder, wird von build-full-title direkt
+% nach dem Lesezeichen des Hauptlieds ausgegeben.
+#(define-markup-command (embedded-songs-to-pdf-toc layout props) ()
+  (apply ly:stencil-add
+    (cons empty-stencil
+      (filter-map
+        (lambda (song)
+          (let ((bookmark (song-pdf-bookmark-title song)))
+            (and bookmark (make-pdf-toc-stencil bookmark 0))))
+        (embedded-song-list (chain-assoc-get 'header:embeddedsongs props '()))))))

private_includes/base/footer_with_songinfo.ily

@@ -33,7 +33,8 @@
 #(define (join-present items joiner)
   (string-join (filter (lambda (item) (and (string? item) (not (string-null? (string-trim-both item))))) items) joiner))
 
-#(define-markup-command (print-songinfo layout props) ()
+% Songinfo aus den header:*-Properties, ohne Pruefung auf die letzte Seite.
+#(define-markup-command (songinfo-content layout props) ()
   (define (songinfo-from songId key)
     (let ((song (if (defined? 'SONG_DATA) (assoc-ref SONG_DATA songId) #f)))
       (if song
@@ -131,7 +132,6 @@
   )
 
   (interpret-markup layout props
-    (if (chain-assoc-get 'page:is-bookpart-last-page props #f)
     (let* ((authors (chain-assoc-get 'header:authors props #f))
            (poet-and-composers (poet-and-composer-from-authors authors))
            (songId (chain-assoc-get 'header:songId props #f))
@@ -167,10 +167,25 @@
               #:fontsize songInfoFontSize
               #:sans
               (ly:output-def-lookup layout 'songinfoMarkup)
-            )))
+            ))))
-      (make-null-markup)))
 )
 
+% Songinfo im Footer, nur auf der letzten Seite des Bookparts. Gibt es
+% eingebettete Lieder (siehe embedded_songs.ily), steht hier die Songinfo des
+% letzten eingebetteten Lieds, ausser im Header ist footersong gesetzt
+% (##f = Hauptlied, oder ein mit \captureSong gesichertes Lied).
+#(define-markup-command (print-songinfo layout props) ()
+  (if (chain-assoc-get 'page:is-bookpart-last-page props #f)
+    (let* ((footersong (chain-assoc-get 'header:footersong props 'auto))
+           (embedded (embedded-song-list (chain-assoc-get 'header:embeddedsongs props '())))
+           (song (if (eq? footersong 'auto)
+                     (and (pair? embedded) (last embedded))
+                     footersong)))
+      (interpret-markup layout
+        (if (module? song) (header-module->props song props) props)
+        (make-songinfo-content-markup)))
+    (interpret-markup layout props (make-null-markup))))
+
 #(define-markup-command (print-pagenumber layout props)()
   (let ((label (chain-assoc-get 'header:myindexlabel props #f)))
    (interpret-markup layout props

private_includes/base/scm/yaml_parser.scm

@@ -1,259 +1,154 @@
-(use-modules (ice-9 rdelim) (ice-9 regex) (ice-9 receive) (srfi srfi-1))
+(use-modules (ice-9 rdelim) (ice-9 regex) (ice-9 pretty-print) (srfi srfi-1))
-
-;; YAML-Parser: liest eine Teilmenge von YAML (Block-Syntax, keine
-;; Flow-Collections, keine Block-Skalare) in verschachtelte
-;; alist/list-Strukturen. Gegenstück zu yaml_writer.scm.
-;;
-;; Ergebnisformat:
-;;  - Mapping -> alist mit String-Keys, Reihenfolge wie in der Datei
-;;  - Liste   -> Liste (auch als "- key: value"-Inline-Mappings)
-;;  - Skalare -> String, Zahl, #t/#f, '() (null / {} / [])
-;;
-;; Skalar-Interpretation:
-;;  - unquoted und 'single-quoted' Werte werden interpretiert
-;;    (Zahl, true/false/null). Das Interpretieren von single-quoted
-;;    Werten ist Kompatibilitätsverhalten zum alten Parser:
-;;    authors.yml notiert Zahlen als '1898'.
-;;  - "double-quoted" Werte bleiben immer Strings; \\, \" und \n
-;;    werden entescaped (so schreibt sie der yaml_writer).
-;;  - Kommentare (#) werden nur außerhalb von Quotes entfernt und nur,
-;;    wenn ihnen ein Leerzeichen oder der Zeilenanfang vorausgeht.
 
+;; Hauptparsingfunktion
 (define (yml-file->scm filename)
 
-  ;; --- Zeilen einlesen ------------------------------------------------
+  ;; Utility: Zeile einlesen
-
+  (define (read-lines filename)
-  ;; Anzahl führender Leerzeichen
-  (define (line-indent line)
-    (let loop ((i 0))
-      (if (and (< i (string-length line))
-               (char=? (string-ref line i) #\space))
-          (loop (+ i 1))
-          i)))
-
-  ;; Liefert Items (indent . inhalt); Leerzeilen, reine Kommentarzeilen
-  ;; und Dokumentmarker (--- / ...) werden übersprungen.
-  (define (read-items filename)
     (call-with-input-file filename
       (lambda (port)
-        (let loop ((items '()))
+        (let loop ((lines '()))
           (let ((line (read-line port)))
             (if (eof-object? line)
-                (reverse items)
+                (reverse lines)
-                (let* ((line (if (string-suffix? "\r" line)
+                (let ((clean (string-trim line)))
-                                 (string-drop-right line 1)
+                  (if (or (string=? clean "---") (string-null? clean))
-                                 line))
+                      (loop lines) ;; Ignoriere "---" oder leere Zeile
-                       (content (string-trim-both line)))
+                      (loop (cons line lines))))))))))
-                  (if (or (string-null? content)
-                          (string-prefix? "#" content)
-                          (string=? content "---")
-                          (string=? content "..."))
-                      (loop items)
-                      (loop (cons (cons (line-indent line) content)
-                                  items))))))))))
 
-  (define (item-indent item) (car item))
+  ;; Einrückung bestimmen (Anzahl Leerzeichen am Anfang)
-  (define (item-content item) (cdr item))
+  (define (line-indent line)
+    (let ((match (string-match "^ *" line)))
+      (if match
+          (match:end match)  ; Anzahl der Leerzeichen = Position nach Leerzeichen
+          0)))               ; Falls kein Match → 0
 
-  ;; --- Skalare ----------------------------------------------------------
+  ;; Kommentar entfernen
+  (define (strip-comment line)
+    (let ((m (string-match "#.*" line)))
+      (if m
+          (string-trim-right (string-take line (match:start m)))
+          line)))
 
-  ;; Position des schließenden Double-Quotes ab start (oder #f);
+  ;; Hilfsfunktion: Whitespace entfernen
-  ;; Backslash escaped das Folgezeichen.
+  (define (clean-line line)
-  (define (closing-double-quote s start)
+    (string-trim (strip-comment line)))
-    (let loop ((i start))
-      (cond ((>= i (string-length s)) #f)
-            ((char=? (string-ref s i) #\\) (loop (+ i 2)))
-            ((char=? (string-ref s i) #\") i)
-            (else (loop (+ i 1))))))
 
-  ;; Position des schließenden Single-Quotes ab start (oder #f);
+  ;; Ist Zeile leer (nach Entfernen von Kommentar & Whitespace)?
-  ;; '' ist ein escaptes Quote.
+  (define (blank-or-comment? line)
-  (define (closing-single-quote s start)
+    (string-null? (clean-line line)))
-    (let loop ((i start))
-      (cond ((>= i (string-length s)) #f)
-            ((char=? (string-ref s i) #\')
-             (if (and (< (+ i 1) (string-length s))
-                      (char=? (string-ref s (+ i 1)) #\'))
-                 (loop (+ i 2))
-                 i))
-            (else (loop (+ i 1))))))
 
-  ;; \\ -> \, \" -> ", \n -> Zeilenumbruch
+  ;; Skalare Werte interpretieren
-  (define (unescape-double s)
+  (define (parse-scalar str)
-    (let loop ((chars (string->list s)) (acc '()))
+    (define (strip-quotes s)
-      (cond ((null? chars) (list->string (reverse acc)))
-            ((and (char=? (car chars) #\\) (pair? (cdr chars)))
-             (loop (cddr chars)
-                   (cons (if (char=? (cadr chars) #\n)
-                             #\newline
-                             (cadr chars))
-                         acc)))
-            (else (loop (cdr chars) (cons (car chars) acc))))))
-
-  ;; '' -> '
-  (define (unescape-single s)
-    (regexp-substitute/global #f "''" s 'pre "'" 'post))
-
-  ;; Kommentar in einem unquoted Wert entfernen:
-  ;; # zählt nur am Anfang oder nach Leerzeichen
-  (define (strip-plain-comment s)
-    (let loop ((i 0))
-      (cond ((>= i (string-length s)) s)
-            ((and (char=? (string-ref s i) #\#)
-                  (or (zero? i)
-                      (char-whitespace? (string-ref s (- i 1)))))
-             (string-take s i))
-            (else (loop (+ i 1))))))
-
-  ;; Unquoted/single-quoted Werte interpretieren
-  (define (interpret-plain s)
       (cond
-     ((member s '("{}" "[]" "null")) '())
+       ((and (string-prefix? "\"" s) (string-suffix? "\"" s))
+        (string-drop-right (string-drop s 1) 1))
+       ((and (string-prefix? "'" s) (string-suffix? "'" s))
+        (string-drop-right (string-drop s 1) 1))
+       (else s)))
+    (let ((s (strip-quotes (string-trim str))))
+      (cond
+       ((string=? s "{}") '())  ;; leere Map
+       ((string=? s "[]") '())  ;; leere Liste
+       ((string-match "^[0-9]+$" s) (string->number s))
        ((string=? s "true") #t)
        ((string=? s "false") #f)
-     ((string-match "^-?[0-9]+(\\.[0-9]+)?$" s) (string->number s))
+       ((string=? s "null") '())
-     (else s)))
+       (else s))))
 
-  ;; Skalar parsen; Rest hinter einem schließenden Quote wird ignoriert
-  ;; (darf nur ein Kommentar sein)
-  (define (parse-scalar str)
-    (let ((s (string-trim-both str)))
-      (cond
-       ((string-null? s) "")
-       ((char=? (string-ref s 0) #\")
-        (let ((end (closing-double-quote s 1)))
-          (if end
-              (unescape-double (substring s 1 end))
-              (string-trim-right (strip-plain-comment s)))))
-       ((char=? (string-ref s 0) #\')
-        (let ((end (closing-single-quote s 1)))
-          (if end
-              (interpret-plain (unescape-single (substring s 1 end)))
-              (string-trim-right (strip-plain-comment s)))))
-       (else
-        (interpret-plain (string-trim-right (strip-plain-comment s)))))))
 
-  ;; --- Struktur ----------------------------------------------------------
+  ;; Hilfsfunktion: Zeilen mit gleicher oder höherer Einrückung sammeln
+  (define (take-indented lines min-indent)
+    (let loop ((ls lines) (acc '()))
+      (if (null? ls)
+          (reverse acc)
+          (let ((line (car ls)))
+            (if (or (blank-or-comment? line)
+                    (>= (line-indent line) min-indent))
+                (loop (cdr ls) (cons line acc))
+                (reverse acc))))))
 
-  ;; Erste Key-Trennstelle: ":" am Zeilenende oder gefolgt von Leerzeichen.
+  ;; Hilfsfunktion: N Zeilen überspringen
-  ;; Beginnt die Zeile mit einem gequoteten Key (oder Skalar), zaehlt ein
+  (define (drop lst n)
-  ;; ":" innerhalb der Quotes nicht als Trennstelle.
+    (let loop ((l lst) (i n))
-  (define (key-split-index s)
+      (if (or (zero? i) (null? l))
-    (let ((start (if (string-null? s)
+          l
-                     0
+          (loop (cdr l) (- i 1)))))
-                     (case (string-ref s 0)
-                       ((#\") (let ((end (closing-double-quote s 1)))
-                                (if end (+ end 1) 0)))
-                       ((#\') (let ((end (closing-single-quote s 1)))
-                                (if end (+ end 1) 0)))
-                       (else 0)))))
-      (let loop ((i start))
-        (cond ((>= i (string-length s)) #f)
-              ((and (char=? (string-ref s i) #\:)
-                    (or (= i (- (string-length s) 1))
-                        (char=? (string-ref s (+ i 1)) #\space)))
-               i)
-              (else (loop (+ i 1)))))))
 
-  ;; Key interpretieren: gequotete Keys werden entquotet (Strings bleiben
+  ;; Listenparsing: Liest Zeilen mit `-` als Listeneinträge
-  ;; Strings), unquoted Keys bleiben unveraendert
+  (define (parse-list lines current-indent)
-  (define (parse-key s)
+    (let loop ((ls lines) (result '()))
-    (let ((k (string-trim-both s)))
+      (if (null? ls)
-      (cond
-       ((string-null? k) k)
-       ((char=? (string-ref k 0) #\")
-        (let ((end (closing-double-quote k 1)))
-          (if end (unescape-double (substring k 1 end)) k)))
-       ((char=? (string-ref k 0) #\')
-        (let ((end (closing-single-quote k 1)))
-          (if end (unescape-single (substring k 1 end)) k)))
-       (else k))))
-
-  (define (dash-line? content)
-    (or (string=? content "-") (string-prefix? "- " content)))
-
-  ;; Wert-String hinter "key:" bzw. "-": reiner Kommentar zählt als leer
-  (define (effective-value str)
-    (let ((s (string-trim-both str)))
-      (if (string-prefix? "#" s) "" s)))
-
-  ;; Einen Block von Items parsen; das erste Item bestimmt die Blockart
-  (define (parse-block items)
-    (cond
-     ((null? items) '())
-     ((dash-line? (item-content (car items))) (parse-list items))
-     ;; einzelne Zeile ohne Key: Skalar (z.B. eine Datei, die nur {} enthält)
-     ((and (null? (cdr items))
-           (not (key-split-index (item-content (car items)))))
-      (parse-scalar (item-content (car items))))
-     (else (parse-map items))))
-
-  ;; Mapping: alle Items auf map-indent sind Keys, tiefer eingerückte
-  ;; Items gehören zum jeweils vorangehenden Key
-  (define (parse-map items)
-    (let ((map-indent (item-indent (car items))))
-      (let loop ((items items) (result '()))
-        (if (null? items)
           (reverse result)
-            (let* ((content (item-content (car items)))
+          (let* ((line (clean-line (car ls))))
-                   (split (key-split-index content)))
+            (if (string-match "^-" line)
-              (if (not split)
+                (let* ((indent (line-indent (car ls)))
-                  (begin
+                       (item-str (string-trim (string-drop line 1)))
-                    (format (current-error-port)
+                       (next-lines (cdr ls)))
-                            "YAML-Syntaxfehler: Ungültige Zeile: ~a\n" content)
+                  (if (or (null? next-lines)
-                    (loop (cdr items) result))
+                          (> (line-indent (car next-lines)) indent))
-                  (let ((key (parse-key (string-take content split)))
+                      ;; Verschachtelter Inhalt
-                        (value-str (effective-value
+                      (let* ((sub (take-indented next-lines (+ indent 2)))
-                                    (string-drop content (+ split 1)))))
+                             (parsed (if (null? sub)
+                                         (parse-scalar item-str)
+                                         (parse-lines sub (+ indent 2))))
+                             (remaining (drop next-lines (length sub))))
+                        (loop remaining (cons parsed result)))
+                      ;; Einfacher Skalar
+                      (loop next-lines (cons (parse-scalar item-str) result))))
+                ;; Nicht mehr Teil der Liste
+                (reverse result))))))
+
+  ;; Hauptparser für Key-Value oder Listen
+  (define (parse-lines lines current-indent)
+    (let loop ((ls lines) (result '()))
+      (if (null? ls)
+          (reverse result)
+          (let* ((raw-line (car ls))
+                 (line (clean-line raw-line)))
+            (cond
+             ;; Kommentar oder leere Zeile
+             ((blank-or-comment? raw-line)
+              (loop (cdr ls) result))
+
+             ;; Liste
+             ((string-match "^- " line)
+              (let ((list-lines (take-indented ls current-indent)))
+                (let ((parsed-list (parse-list list-lines current-indent)))
+                  (loop (drop ls (length list-lines))
+                        (cons parsed-list result)))))
+
+             ;; Key: Value
+             ((string-match "^[^:]+:" line)
+              (let* ((kv (string-split line #\:))
+                     (key (string-trim (car kv)))
+                     (value-str (string-trim (string-join (cdr kv) ":")))
+                     (next-lines (cdr ls)))
                 (if (string-null? value-str)
-                        ;; Wert steht im eingerückten Block darunter
+                    ;; Wert auf nachfolgender Einrückungsebene
-                        (receive (children rest)
+                    (let* ((sub (take-indented next-lines (+ current-indent 2)))
-                            (span (lambda (it) (> (item-indent it) map-indent))
+                           (parsed (parse-lines sub (+ current-indent 2)))
-                                  (cdr items))
+                           (remaining (drop next-lines (length sub))))
-                          (loop rest
+                      (loop remaining
-                                (cons (cons key (parse-block children))
+                            (cons (cons key parsed) result)))
-                                      result)))
+                    ;; Einfacher Key:Value
-                        (loop (cdr items)
+                    (loop next-lines
-                              (cons (cons key (parse-scalar value-str))
+                          (cons (cons key (parse-scalar value-str)) result)))))
-                                    result))))))))))
 
-  ;; Liste: "- wert", "- key: value" (Inline-Mapping) oder "-" mit
+             ;; Fehlerhafte Zeile
-  ;; eingerücktem Block darunter
+             (else
-  (define (parse-list items)
+               ;; Vermeide Fehlermeldung für Leerzeilen oder leere Objekte
-    (let ((list-indent (item-indent (car items))))
+               (if (or (string-null? (string-trim line))
-      (let loop ((items items) (result '()))
+                       (member line '("{}" "[]")))
-        (if (null? items)
+                   (loop (cdr ls) result)
-            (reverse result)
-            (let ((content (item-content (car items))))
-              (if (not (dash-line? content))
                    (begin
                      (format (current-error-port)
-                            "YAML-Syntaxfehler: Ungültiges Listenelement: ~a\n"
+                             "Syntaxfehler: Ungültige Zeile: ~a\n" raw-line)
-                            content)
+                     (loop (cdr ls) result))))
-                    (loop (cdr items) result))
+             )))))
-                  (receive (children rest)
-                      (span (lambda (it) (> (item-indent it) list-indent))
-                            (cdr items))
-                    (let* ((after-dash (string-drop content 1))
-                           (inline (effective-value after-dash)))
-                      (cond
-                       ((and (string-null? inline) (null? children))
-                        (loop rest (cons '() result)))
-                       ((string-null? inline)
-                        (loop rest (cons (parse-block children) result)))
-                       (else
-                        ;; Inline-Inhalt: als synthetisches Item mit der
-                        ;; Spalte des Inhalts vor die Kinder stellen, so
-                        ;; funktioniert auch "- key: value" mit weiteren
-                        ;; Keys auf den Folgezeilen
-                        (let* ((offset (- (string-length content)
-                                          (string-length
-                                           (string-trim after-dash))))
-                               (synth (cons (+ list-indent offset) inline)))
-                          (loop rest
-                                (cons (parse-block (cons synth children))
-                                      result)))))))))))))
 
-  (parse-block (read-items filename)))
+  (let ((lines (read-lines filename)))
+    (parse-lines lines 0)))
 
 (define (parse-yml-file filename) (resolve-inherits (yml-file->scm filename)))

private_includes/base/scm/yaml_writer.scm

@@ -1,162 +0,0 @@
-(use-modules (ice-9 regex) (srfi srfi-1))
-
-;; YAML-Writer: Gegenstück zu yaml_parser.scm.
-;; Schreibt verschachtelte alist/list-Strukturen als YAML, so dass
-;; yml-file->scm sie wieder einlesen kann.
-;;
-;; Datenmodell (wie vom Parser erzeugt):
-;;  - Mapping: Liste von Paaren (key . value), key als String oder Symbol
-;;  - Liste:   Liste von beliebigen Werten
-;;  - Skalare: String, Zahl, #t/#f, '() (leer/null, wird als [] geschrieben)
-;;
-;; Andere Werte werden vorab automatisch umgewandelt: Markups zu Strings,
-;; alles Unbekannte über ~a formatiert (siehe yml-sanitize).
-
-;; Steuert, ob layout_bottom.ily die Header-Daten des Liedes als
-;; YAML-Datei exportiert; aktivierbar per (set! yaml-export-enabled #t)
-;; oder durch Definieren der Variable vor dem Laden der Includes.
-(define yaml-export-enabled
-  (if (defined? 'yaml-export-enabled) yaml-export-enabled #f))
-
-;; Beliebige Werte in YAML-taugliche Daten umwandeln.
-;; (Benötigt die LilyPond-Umgebung für markup? und markup->string.)
-(define (yml-sanitize v)
-  (cond
-   ((or (string? v) (number? v) (boolean? v) (symbol? v) (null? v)) v)
-   ((markup? v) (markup->string v))
-   ((list? v) (map yml-sanitize v))
-   ((pair? v) (cons (yml-sanitize (car v)) (yml-sanitize (cdr v))))
-   (else (format #f "~a" v))))
-
-(define (scm->yml-string data)
-
-  ;; Ist data ein Mapping (alist)? Nicht-leere Liste, deren Elemente
-  ;; alle Paare mit String- oder Symbol-Key sind.
-  ;; Achtung: eine Liste von Listen, deren erste Elemente Strings sind,
-  ;; ist davon nicht unterscheidbar und wird als Mapping interpretiert.
-  (define (mapping? data)
-    (and (pair? data)
-         (list? data)
-         (every (lambda (entry)
-                  (and (pair? entry)
-                       (or (string? (car entry))
-                           (symbol? (car entry)))))
-                data)))
-
-  (define (scalar? v)
-    (or (string? v) (symbol? v) (number? v) (boolean? v) (null? v)))
-
-  (define (key->string k)
-    (if (symbol? k) (symbol->string k) k))
-
-  ;; Muss der String gequotet werden, damit er beim Einlesen wieder
-  ;; als derselbe String erkannt wird?
-  (define (needs-quotes? s)
-    (or (string-null? s)
-        (member s '("true" "false" "null" "{}" "[]"))
-        (string->number s)                       ;; zahlartig ("1981", "1.", "-5") würde zur Zahl
-        (string-index s #\#)                     ;; würde als Kommentar abgeschnitten
-        (string-index s #\:)                     ;; würde als Key: Value gelesen
-        (string-index s #\newline)               ;; mehrzeilig
-        (string-index s #\")
-        (string-prefix? "-" s)                   ;; würde als Listenelement gelesen
-        (string-prefix? "'" s)
-        (not (string=? s (string-trim-both s))))) ;; führende/folgende Leerzeichen
-
-  ;; Doppelt gequoteter YAML-String; Backslash, Anführungszeichen und
-  ;; Zeilenumbrüche werden escaped, damit alles auf einer Zeile bleibt.
-  (define (quote-string s)
-    (string-append
-     "\""
-     (string-concatenate
-      (map (lambda (c)
-             (cond
-              ((char=? c #\\) "\\\\")
-              ((char=? c #\") "\\\"")
-              ((char=? c #\newline) "\\n")
-              (else (string c))))
-           (string->list s)))
-     "\""))
-
-  (define (scalar->string v)
-    (cond
-     ((eq? v #t) "true")
-     ((eq? v #f) "false")
-     ((null? v) "[]")
-     ((number? v) (number->string v))
-     ((symbol? v) (scalar->string (symbol->string v)))
-     ((string? v) (if (needs-quotes? v) (quote-string v) v))
-     (else (error "scm->yml-string: nicht unterstützter Wert" v))))
-
-  (define (indent-string n) (make-string n #\space))
-
-  ;; Key ggf. quoten (leere oder zahlartige Keys, Sonderzeichen)
-  (define (key->yml-string k)
-    (let ((s (key->string k)))
-      (if (needs-quotes? s) (quote-string s) s)))
-
-  ;; Doppelte Keys sind in YAML nicht erlaubt: Werte gleicher Keys werden
-  ;; zu einer Liste zusammengefasst, z.B. authors mit (voice 2) (voice 3)
-  ;; -> voice: [2, 3].
-  (define (merge-duplicate-keys data)
-    (define (value->list v)
-      (if (and (list? v) (not (mapping? v))) v (list v)))
-    (let loop ((entries data) (result '()))
-      (if (null? entries)
-          (reverse result)
-          (let* ((entry (car entries))
-                 (existing (find (lambda (e) (equal? (car e) (car entry)))
-                                 result)))
-            (if existing
-                (begin
-                  (set-cdr! existing (append (value->list (cdr existing))
-                                             (value->list (cdr entry))))
-                  (loop (cdr entries) result))
-                (loop (cdr entries)
-                      (cons (cons (car entry) (cdr entry)) result)))))))
-
-  ;; Mapping schreiben: "key: skalar" oder "key:" mit eingerücktem Inhalt
-  (define (write-mapping data indent port)
-    (for-each
-     (lambda (entry)
-       (let ((key (key->yml-string (car entry)))
-             (value (cdr entry)))
-         (if (scalar? value)
-             (format port "~a~a: ~a\n"
-                     (indent-string indent) key (scalar->string value))
-             (begin
-               (format port "~a~a:\n" (indent-string indent) key)
-               (write-node value (+ indent 2) port)))))
-     (merge-duplicate-keys data)))
-
-  ;; Liste schreiben: "- skalar" oder "-" mit eingerücktem Inhalt
-  ;; (Verschachtelter Inhalt darf NICHT auf der "-"-Zeile beginnen,
-  ;; weil parse-list den Inhalt der "-"-Zeile verwirft, sobald
-  ;; eingerückte Folgezeilen existieren.)
-  (define (write-list data indent port)
-    (for-each
-     (lambda (item)
-       (if (scalar? item)
-           (format port "~a- ~a\n"
-                   (indent-string indent) (scalar->string item))
-           (begin
-             (format port "~a-\n" (indent-string indent))
-             (write-node item (+ indent 2) port))))
-     data))
-
-  (define (write-node data indent port)
-    (cond
-     ((mapping? data) (write-mapping data indent port))
-     ((and (list? data) (not (null? data))) (write-list data indent port))
-     (else (format port "~a~a\n" (indent-string indent) (scalar->string data)))))
-
-  (call-with-output-string
-   (lambda (port) (write-node (yml-sanitize data) 0 port))))
-
-;; Daten als YAML-Datei schreiben
-(define (scm->yml-file filename data)
-  (call-with-output-file filename
-    (lambda (port)
-      (display "---\n" port)
-      (display (scm->yml-string data) port))))
-

private_includes/base/title_with_category_images.ily

@@ -65,10 +65,11 @@
        ;; Ist dieses Lied das erste eines Kapitels, wird der Kapitel-Eintrag
        ;; unmittelbar vor dem Lied-Eintrag ausgegeben, damit die pdfmark-/OUT-
        ;; Reihenfolge (Elternteil vor Kindern) im PDF-Stream garantiert stimmt.
+       ;; Eingebettete Lieder (embedded_songs.ily) folgen direkt nach dem Lied.
        (if (and (string? chaptertitle) (not (string-null? chaptertitle)))
          (markup #:chapter-to-pdf-toc chaptercount chaptertitle
-                 #:title-to-pdf-toc pdfbookmark title-markup)
+                 #:title-to-pdf-toc pdfbookmark #:embedded-songs-to-pdf-toc title-markup)
-         (markup #:title-to-pdf-toc pdfbookmark title-markup))
+         (markup #:title-to-pdf-toc pdfbookmark #:embedded-songs-to-pdf-toc title-markup))
        make-null-markup)
      )))
 

private_includes/base/verses_with_chords.ily

@@ -89,7 +89,7 @@
      (if (and (string? arg) (string-null? arg))
          " "
          #{\markup
-           \score { \new Lyrics { \lyricmode { #(if (ly:music? arg) arg #{ \set stanza = #arg #}) "" } } \layout { $verselayout #(customized-layout verselayout) } }
+           \score { \new Lyrics { \lyricmode { #(if (ly:music? arg) arg #{ \stanza #arg #}) "" } } \layout { $verselayout #(customized-layout verselayout) } }
          #}
      )))
 
@@ -182,19 +182,7 @@
      ((if reverses fold fold-right) (lambda (element filled-list)
               (cons element (if (null? filled-list) '() (cons markup-between filled-list))))
         '() elements))
-   ;; Dokumentposition fuer den ChordPro-/Data-Collector: jede Gruppe nimmt
+   (let* ((column-item-count (ceiling (/ (length versegroup) verse-cols)))
-   ;; sich eine Sequenznummer, jeder Vers traegt seine Position innerhalb
-   ;; der Gruppe in den Props -- die Spalten-Verteilung unten verschraenkt
-   ;; sonst die Interpretationsreihenfolge.
-   (set! chordpro-doc-seq-counter (1+ chordpro-doc-seq-counter))
-   (let* ((doc-seq chordpro-doc-seq-counter)
-          (versegroup (index-map
-                       (lambda (index item)
-                         (make-override-markup
-                          (cons 'chordpro-doc-order (cons doc-seq index))
-                          item))
-                       versegroup))
-          (column-item-count (ceiling (/ (length versegroup) verse-cols)))
           (column-data (make-list verse-cols)))
     (let columnize-list ((index 0) (items versegroup))
       (if (not (null? items))
@@ -261,6 +249,13 @@ Chord_lyrics_spacing_engraver =
          (lyrics-seen-since-break #f)
          (have-a-rest #f)
          (stanza #f)
+         ; Akkord auf einer Skip-Silbe "_" nach Wortende soll über die folgende Silbe
+         (word-continues #f)
+         (continuation-this-step #f)
+         (lyric-skip-this-step #f)
+         (syllable-this-step #f)
+         (chord-this-step #f)
+         (chord-on-lyric-skip #f)
          (place-at-right-edge
           (lambda (grob anchor padding)
             (let ((anchor-width (interval-length (ly:grob-extent anchor anchor X))))
@@ -268,6 +263,25 @@ Chord_lyrics_spacing_engraver =
               (ly:grob-set-property! grob 'X-offset (+ padding anchor-width))
               ))))
      (make-engraver
+      ((start-translation-timestep engraver)
+       (set! continuation-this-step #f)
+       (set! lyric-skip-this-step #f)
+       (set! syllable-this-step #f)
+       (set! chord-this-step #f)
+       )
+      ((stop-translation-timestep engraver)
+       (if (and chord-on-lyric-skip (not (eq? chord-on-lyric-skip chord-this-step)))
+           (begin
+             (if (and syllable-this-step (not chord-this-step))
+                 (begin
+                   (ly:grob-set-parent! chord-on-lyric-skip X syllable-this-step)
+                   (ly:grob-set-property! chord-on-lyric-skip 'X-offset 0)
+                   (ly:grob-set-property! chord-on-lyric-skip 'extra-spacing-width '(+inf.0 . -inf.0))
+                   (set! lyric-width-since-last-chord (interval-length (ly:grob-extent syllable-this-step syllable-this-step X)))))
+             (set! chord-on-lyric-skip #f)))
+       (if syllable-this-step
+           (set! word-continues continuation-this-step))
+       )
       (listeners
        ((multi-measure-rest-event engraver event)
         (set! have-a-rest #t)
@@ -275,8 +289,19 @@ Chord_lyrics_spacing_engraver =
        ((rest-event engraver event)
         (set! have-a-rest #t)
         )
+       ((hyphen-event engraver event)
+        (set! continuation-this-step #t)
+        )
+       ((extender-event engraver event)
+        (set! continuation-this-step #t)
+        )
        ((lyric-event engraver event)
         (set! have-a-rest #f)
+        ; "_" wird zu " " und erzeugt keine LyricText
+        (if (equal? (ly:event-property event 'text) " ")
+            (begin
+              (set! lyric-skip-this-step #t)
+              (set! chord-on-lyric-skip #f)))
         (set! music-columns-for-last-syllable 0)
         )
        ((break-event engraver event)
@@ -286,6 +311,7 @@ Chord_lyrics_spacing_engraver =
         (set! last-printed-chord #f)
         (set! chord-width-since-last-lyric 0)
         (set! lyrics-seen-since-break #f)
+        (set! chord-on-lyric-skip #f)
         ))
       (acknowledgers
        ((musical-paper-column-interface this-engraver grob source-engraver)
@@ -306,6 +332,7 @@ Chord_lyrics_spacing_engraver =
                     (ly:grob-set-property! grob 'X-offset gap-for-starting-rest)
                     )))
             )
+        (set! syllable-this-step grob)
         (set! last-lyric-syllable grob)
         (set! chord-width-since-last-lyric 0)
         (set! lyrics-seen-since-break #t)
@@ -333,6 +360,9 @@ Chord_lyrics_spacing_engraver =
                                              (cons (car (ly:grob-property last-lyric-syllable 'extra-spacing-width '(0 . 0))) (+ chord-gap chord-overwidth)))
                       )
               (set! lyric-width-since-last-chord (* (if last-lyric-syllable (interval-length (ly:grob-extent last-lyric-syllable last-lyric-syllable X)) 0) (- 1 (/ 1.0 music-columns-for-last-syllable))))
+              (set! chord-this-step grob)
+              (if (and lyric-skip-this-step (not have-a-rest) (not word-continues))
+                  (set! chord-on-lyric-skip grob))
               (set! last-printed-chord grob)
               (set! last-lyric-syllable #f)
               )
@@ -353,20 +383,6 @@ Chord_lyrics_spacing_engraver =
                  (transposition (cons #f #f))
                  (verselayout generalLayout))
   "Vers mit Akkorden"
-  ;; Dem ChordPro-Collector sagen, zu welchem Lied dieser Vers gehoert
-  ;; (Buch: songfilename aus den Props via \setsongfilename; Einzellied:
-  ;; Fallback-Key aus layout_bottom). Die Score-Interpretation darunter
-  ;; laeuft synchron, der Engraver liest den Key in initialize. Die Props
-  ;; braucht er zum Aufloesen von Markup-Silben (tags-to-keep).
-  (set! chordpro-active-song-key (chordpro-resolve-song-key props))
-  (set! chordpro-active-props props)
-  ;; Dokumentposition: von \group-verses gestempelt; ausserhalb einer
-  ;; Gruppe nimmt sich der Vers selbst eine Sequenznummer.
-  (set! chordpro-active-doc-order
-    (or (chain-assoc-get 'chordpro-doc-order props #f)
-        (begin
-          (set! chordpro-doc-seq-counter (1+ chordpro-doc-seq-counter))
-          (cons chordpro-doc-seq-counter 0))))
   (interpret-markup layout props
     #{
       \markup {

private_includes/book/book_include.ily

@@ -65,26 +65,6 @@ additionalPageNumbers =
   display-pages-list
 )
 
-% Fuer Zusatzseiten: Label der ersten Seite des zusammenhaengenden
-% Zusatzseiten-Blocks, zu dem label gehoert (bestimmt den Buchstaben-Suffix a, b, ...).
-#(define (earliest-additional-label label)
-  (let find-earliest-additional-label
-       ((rest-additional-page-switch-label-list (member (cons label #t) additional-page-switch-label-list)))
-       (if (cdadr rest-additional-page-switch-label-list)
-           (find-earliest-additional-label (cdr rest-additional-page-switch-label-list))
-           (caar rest-additional-page-switch-label-list))))
-
-% Sichtbare Seitenzahl der Seite mit diesem Label: normalerweise eine Zahl,
-% auf Zusatzseiten ein String mit Buchstaben-Suffix (z.B. "12a"); gleiche
-% Logik wie custom-page-number unten.
-#(define (visible-page-value layout label)
-  (let ((display-page (assq-ref (build-display-pages-list layout) label)))
-    (if (assq-ref additional-page-switch-label-list label)
-        (ly:format "~a~a" display-page
-          (string (integer->char (+ 97 (- (real-page-number layout label)
-                                          (real-page-number layout (earliest-additional-label label)))))))
-        display-page)))
-
 % TODO:
 % Eigentlich können wir das direkt in oddFooderMarkup und evenFooterMarkup aufrufen
 % vermutlich sogar ohne den delay kram. Wir sollten außerdem einfach nur die property
@@ -117,7 +97,12 @@ width may require additional tweaking.)"
                           (if (assq-ref additional-page-switch-label-list label)
                               (make-concat-markup (list (number-format number-type display-page)
                                 (make-char-markup (+ 97 (- real-current-page (real-page-number layout
-                                  (earliest-additional-label label)))))))
+                                  (let find-earliest-additional-label
+                                       ((rest-additional-page-switch-label-list (member (cons label #t) additional-page-switch-label-list)))
+                                       (if (cdadr rest-additional-page-switch-label-list)
+                                           (find-earliest-additional-label (cdr rest-additional-page-switch-label-list))
+                                           (caar rest-additional-page-switch-label-list)))
+                                ))))))
                               (number-format number-type (+ display-page (- real-current-page (real-page-number layout label))))
                           ))
                         (page-stencil (interpret-markup layout props page-markup))
@@ -133,79 +118,6 @@ width may require additional tweaking.)"
      (make-filled-box-stencil x-ext y-ext))))
 
 
-%% Schreibt die Daten aller Lieder des Buchs (extract-song-data, siehe
-%% data_extractor.ily) als YAML-Datei: oberster Key contents, darunter eine
-%% Liste mit den Lied-Daten, jeweils angereichert um den Key page mit der
-%% sichtbaren Seitenzahl des Liedanfangs. Einbinden wie \write-toc-csv in
-%% einem Markup des Buchs; wie dort passiert das Schreiben ueber ein
-%% delayed stencil, weil die Label->Seiten-Tabelle erst beim Ausgeben des
-%% Buchs feststeht. Der Dateiname ist der Ausgabename des Buchs
-%% (\bookOutputName, sonst der .ly-Basisname) mit angehaengtem .yml --
-%% landet also wie das PDF relativ zum Arbeitsverzeichnis.
-#(define-markup-command (write-book-yaml layout props) ()
-  (let ((filename (string-append (ly:parser-output-name) ".yml")))
-  (ly:make-stencil
-    `(delay-stencil-evaluation
-      ,(delay
-        (begin
-          (scm->yml-file filename
-            (list (cons 'contents
-              (map (lambda (song)
-                     (let ((songvars (cdr song)))
-                       (cons (cons 'page (visible-page-value layout (assq-ref songvars 'label)))
-                             (extract-song-data (assq-ref songvars 'header)
-                                                (assq-ref songvars 'music)
-                                                ;; Textseiten-Strophen aus dem Render-
-                                                ;; Collector-Store (Key = Liedname); beim
-                                                ;; Ausgeben des Buchs sind alle Textseiten
-                                                ;; bereits interpretiert.
-                                                (hash-ref chordpro-song-store
-                                                          (symbol->string (car song)))
-                                                (symbol->string (car song))))))
-                   (reverse (alist-delete 'markupPage
-                              (alist-delete 'imagePage
-                                (alist-delete 'emptyPage song-list))))))))
-          empty-stencil))))))
-
-%% Schreibt den ChordPro-Export aller Lieder des Buchs (in Dokument-
-%% reihenfolge) als EINE Datei statt als Einzeldateien pro Lied. Lieder
-%% werden mit der ChordPro-Direktive {new_song} getrennt; vor dem ersten
-%% Lied ist sie nicht noetig, sie gilt am Dateianfang implizit (siehe
-%% https://www.chordpro.org/chordpro/directives-new_song/). Einbinden wie
-%% \write-book-yaml an beliebiger Stelle im Buch -- unabhaengig von
-%% chordpro-export-enabled (das steuert nur den Pro-Song-Export), beide
-%% Befehle koennen auch gleichzeitig genutzt werden. Wie bei
-%% \write-book-yaml passiert das Schreiben ueber ein delayed stencil,
-%% weil der Render-Collector-Store erst beim Ausgeben des Buchs
-%% vollstaendig gefuellt ist. Der Dateiname ist wie bei \write-book-yaml
-%% der Ausgabename des Buchs mit angehaengtem .cho.
-#(define-markup-command (write-book-chordpro layout props) ()
-  (let ((filename (string-append (ly:parser-output-name) ".cho")))
-  (ly:make-stencil
-    `(delay-stencil-evaluation
-      ,(delay
-        (begin
-          (with-output-to-file filename
-            (lambda ()
-              (let loop ((songs (filter
-                                  ;; \chordlyrics-Strophen ODER (bei
-                                  ;; chordpro-include-music-lyrics) aus der
-                                  ;; Musik nachgeholte Kandidaten.
-                                  (lambda (song) (or (> (chordpro-song-verse-index song) 0)
-                                                     (pair? (chordpro-song-music-candidates song))))
-                                  (filter-map
-                                    (lambda (song) (hash-ref chordpro-song-store
-                                                             (symbol->string (car song))))
-                                    (reverse (alist-delete 'markupPage
-                                               (alist-delete 'imagePage
-                                                 (alist-delete 'emptyPage song-list)))))))
-                         (first? #t))
-                (when (pair? songs)
-                  (unless first? (display "{new_song}\n"))
-                  (display (chordpro-format-song (car songs)))
-                  (loop (cdr songs) #f)))))
-          empty-stencil))))))
-
 includeSong =
 #(define-void-function (filename) (string?)
      #{
@@ -213,15 +125,6 @@ includeSong =
      #}
     (ly:parser-parse-string (ly:parser-clone)
       (ly:format "\\include \"~a/~a/~a.ly\"" songPath filename filename))
-    ;; ChordPro: Titel/Autoren dieses Lieds im Render-Collector-Store
-    ;; registrieren -- basicSongInfo haelt direkt nach dem Include genau
-    ;; dieses Lied. Der Key ist der Liedname; die Collector-Daten (Verse,
-    ;; Akkorde) kommen spaeter beim Rendern ueber \setsongfilename unter
-    ;; demselben Key dazu. Unabhaengig von chordpro-export-enabled, damit
-    ;; sowohl der Pro-Song-Export (der die Flag braucht) als auch
-    ;; \write-book-chordpro (das nur explizit aufgerufen werden muss) auf
-    ;; vollstaendige Metadaten zugreifen koennen.
-    (chordpro-register-song-metadata filename HEADER)
     (let ((label (gensym "index")))
       (set! additional-page-switch-label-list
         (acons label additional-page-numbers additional-page-switch-label-list))
@@ -284,20 +187,24 @@ songs =
         ;; Lieder duerfen als Kapitel-Kinder gezaehlt werden -- sonst wird die
         ;; /Count zu hoch und der erste Folgeeintrag (z.B. ein spaeteres Kapitel)
         ;; rutscht faelschlich als Kind mit hinein.
-        (emits-bookmark?
+        ;; Eingebettete Lieder (embedded_songs.ily) haben jeweils ein eigenes
+        ;; Lesezeichen, daher die Anzahl statt eines Booleans.
+        (bookmark-count
           (lambda (e)
-            (and (not (eq? (car e) 'emptyPage))
+            (if (or (eq? (car e) 'emptyPage)
-                 (not (eq? (car e) 'imagePage))
+                    (eq? (car e) 'imagePage)
-                 (not (eq? (car e) 'markupPage))
+                    (eq? (car e) 'markupPage))
-                 (let ((vars (extract-and-check-vars-from-header
+                0
-                               (assq-ref (cdr e) 'header) '(title starttext))))
+                (let* ((headermodule (ly:book-header (assq-ref (cdr e) 'header)))
-                   (if (or (assq-ref vars 'title) (assq-ref vars 'starttext)) #t #f)))))
+                       (vars (extract-and-check-vars-from-module headermodule '(title starttext))))
+                  (+ (if (or (assq-ref vars 'title) (assq-ref vars 'starttext)) 1 0)
+                     (count song-pdf-bookmark-title (embedded-songs-of-header headermodule)))))))
         (count-bookmark-songs
           (lambda (start end)
             (let loop ((i 0) (l ordered) (c 0))
               (cond ((or (null? l) (>= i end)) c)
                     ((< i start) (loop (+ i 1) (cdr l) c))
-                    (else (loop (+ i 1) (cdr l) (if (emits-bookmark? (car l)) (+ c 1) c)))))))
+                    (else (loop (+ i 1) (cdr l) (+ c (bookmark-count (car l)))))))))
         ;; chapters: (title . start-index). start-index = Anzahl der song-list-
         ;; Eintraege beim Aufruf von songsChapter = Index in `ordered`, ab dem
         ;; das Kapitel beginnt.
@@ -397,81 +304,27 @@ songs =
                    (music (assq-ref songvars 'music))
                    (layout (assq-ref songvars 'layout))
                    (text-pages (assq-ref songvars 'text-pages))
-                   (label (assq-ref songvars 'label)))
+                   (label (assq-ref songvars 'label))
+                   (toc-music (header-module-to-toc! (ly:book-header header) label)))
             (set! song-number newnumber)
-            ;; ChordPro_music_collector (Strophen unter den Noten, siehe
+            ;; Eingebettete Lieder: eigene Liednummer, gleiche Seite (label)
-            ;; chordpro.ily) braucht den Song-Key beim tatsaechlichen
+            (for-each
-            ;; Interpretieren dieses Songs' Hauptscore. Im Buch ist DAS
+              (lambda (song)
-            ;; NICHT synchron zu dieser for-each-Schleife -- LilyPond
+                (let ((tocheader (make-module)))
-            ;; interpretiert die \score-Bloecke aller Lieder gesammelt fuer
+                  (set! song-number (+ 1 song-number))
-            ;; das Seitenlayout, oft NACHDEM die Schleife schon beim
+                  (ly:module-copy tocheader song)
-            ;; naechsten (oder letzten) Lied angelangt ist. Ein globaler
+                  (module-define! tocheader 'songnumber (number->string song-number))
-            ;; chordpro-active-song-key waere zu diesem Zeitpunkt also auf
+                  (module-define! tocheader 'chapterref current-chapter)
-            ;; ein ANDERES Lied gesetzt -- die gesammelten Strophen landen
+                  (header-module-to-toc! tocheader label)))
-            ;; dann fälschlich im Store-Eintrag des zuletzt verarbeiteten
+              (embedded-songs-of-header (ly:book-header header)))
-            ;; Lieds (beobachtet: mehrere Lieder ohne eigene \chordlyrics
-            ;; wurden alle in den letzten Song der Test-Bibliothek
-            ;; geschrieben). Deshalb setzen wir den Key per \applyContext
-            ;; DIREKT IN DER MUSIK in chordpro-context-song-keys (siehe
-            ;; chordpro.ily) -- das laeuft synchron zur tatsaechlichen
-            ;; Interpretation dieses Scores und ist deshalb robust gegen die
-            ;; verzoegerte/gesammelte Verarbeitung (eine LilyPond-Context-
-            ;; Property ueber den \layout-Block waere hier keine Alternative:
-            ;; LilyPond verwirft \applyContext-\ly:context-set-property!-
-            ;; Aufrufe fuer nicht deklarierte Properties stillschweigend).
-            ;; Der Music_collector liest bevorzugt diese Tabelle,
-            ;; chordpro-active-song-key bleibt nur als Fallback
-            ;; (Einzellied-Standalone-Pfad, dort synchron genug).
-            ;; \consists nur bei chordpro-include-music-lyrics -- sonst
-            ;; keine Kosten (Grob-Acknowledger fuer JEDEN Akkord/jede
-            ;; Silbe/Strophenmarker des Hauptscores) fuer Buecher, die das
-            ;; Feature nicht nutzen. Bewusst NICHT zusaetzlich an
-            ;; chordpro-export-enabled gekoppelt -- die steuert nur, ob
-            ;; \write-book-chordpro/\chordpro-delayed-write am Ende etwas
-            ;; schreiben, nicht ob hier gesammelt wird.
-            (set! chordpro-active-song-key (symbol->string filename))
-            (let* ((collect-music-lyrics? (and (defined? 'chordpro-include-music-lyrics) chordpro-include-music-lyrics))
-                   (song-layout
-                    (if collect-music-lyrics?
-                        #{
-                          \layout {
-                            $layout
-                            songfilename = $(symbol->string filename)
-                            \context {
-                              \Score
-                              \consists \ChordPro_music_collector
-                            }
-                          }
-                        #}
-                        #{
-                          \layout {
-                            $layout
-                            songfilename = $(symbol->string filename)
-                          }
-                        #}))
-                   (score-music
-                    (if collect-music-lyrics?
-                        #{
-                          <<
-                            \applyContext
-                            #(let ((key (symbol->string filename)))
-                              (lambda (ctx)
-                                (hashq-set! chordpro-context-song-keys ctx key)))
-                            $music
-                          >>
-                        #}
-                        music)))
             #{
               \bookpart {
                 $header
-                  \headerToTOC #header #label
+                $toc-music
-                  \score {
+                \score { $music \layout { $layout songfilename = $(symbol->string filename) } }
-                    $score-music
-                    $song-layout
-                  }
                 $(add-text-pages text-pages)
               }
-              #})))))))))
+            #}))))))))
    ordered
    )))
 

private_includes/book/toc_include.ily

@@ -304,16 +304,9 @@ indexSection =
    (add-index-item! 'indexSectionMarkup (prepend-alist-chain 'combine-with-next #t (prepend-alist-chain 'rawtext text '())) sorttext))
 
 #(define (extract-and-check-vars-from-header bookheader varlist)
-  (let* ((headervars (hash-map->list cons (struct-ref (ly:book-header bookheader) 0)))
+  (extract-and-check-vars-from-module (ly:book-header bookheader) varlist))
-         (extract-var-and-check (lambda (headervar)
-           (let* ((variableref (assoc-ref headervars headervar))
-                  (extracted (if variableref (variable-ref variableref) #f)))
-              (if (and extracted (not (and (string? extracted) (string-null? extracted)))) extracted #f)))))
-    (map (lambda (varsymbol)
-      (cons varsymbol (extract-var-and-check varsymbol))
-    ) varlist)))
 
-headerToTOC = #(define-music-function (parser location header label) (ly:book? symbol?)
+#(define (header-module-to-toc! headermodule label)
     (define (all-author-ids authors)
       (let ((poetIds (find-author-ids-by 'text authors))
             (translatorIds (find-author-ids-by 'translation authors))
@@ -331,7 +324,7 @@ headerToTOC = #(define-music-function (parser location header label) (ly:book? s
     ))
     (let*
       (
-       (extractedheadervars (extract-and-check-vars-from-header header '(title starttext alttitle categorytitle categories authors songnumber chapterref)))
+       (extractedheadervars (extract-and-check-vars-from-module headermodule '(title starttext alttitle categorytitle categories authors songnumber chapterref)))
        (title (assq-ref extractedheadervars 'title))
        (starttext (assq-ref extractedheadervars 'starttext))
        (alttitle (assq-ref extractedheadervars 'alttitle))
@@ -357,6 +350,9 @@ headerToTOC = #(define-music-function (parser location header label) (ly:book? s
            (if title (add-to-toc! title #f) #{ #})
     ))
 
+headerToTOC = #(define-music-function (parser location header label) (ly:book? symbol?)
+  (header-module-to-toc! (ly:book-header header) label))
+
 
 %% https://github.com/NalaGinrut/guile-csv/blob/master/csv/csv.scm
 
@@ -370,9 +366,6 @@ headerToTOC = #(define-music-function (parser location header label) (ly:book? s
 #(define csv-write sxml->csv)
 
 #(define-markup-command (write-toc-csv layout props) ()
-  ;; Dateiname wie bei \write-book-yaml/\write-book-chordpro: der
-  ;; Ausgabename des Buchs mit angehaengtem .csv statt fest "toc.csv".
-  (define csv-filename (string-append (ly:parser-output-name) ".csv"))
   (define (csv-escape field)
     (if (string-null? field)
         field
@@ -405,11 +398,8 @@ headerToTOC = #(define-music-function (parser location header label) (ly:book? s
          (para-lines (map cleanup-whitespaces para-strings)))
     (string-join para-lines "\n")))
   (define (generate-toc-csv labelPageTable)
-    (let ((song-lines (map (lambda (song)
+    (define (song-line filename page-number headermodule)
-            (let* ((filename (symbol->string (car song)))
+            (let* ((extractedheadervars (extract-and-check-vars-from-module headermodule
-                   (songvars (cdr song))
-                   (page-number (assoc-get (assq-ref songvars 'label) labelPageTable))
-                   (extractedheadervars (extract-and-check-vars-from-header (assq-ref songvars 'header)
                       '(title starttext alttitle categorytitle categories authors year_text year_melody year_translation year_composition year_adaption infotext translation pronunciation copyright source)))
                    (headervar-or-empty (lambda (varsym)
                      (let ((extracted (assq-ref extractedheadervars varsym)))
@@ -455,8 +445,17 @@ headerToTOC = #(define-music-function (parser location header label) (ly:book? s
                   (format-info-paragraphs (headervar-or-empty 'translation))
                   (format-info-paragraphs (headervar-or-empty 'pronunciation))
               ))))
+    ;; Eingebettete Lieder (embedded_songs.ily) bekommen eigene Zeilen mit
+    ;; Dateiname und Seite des Hauptlieds.
+    (let ((song-lines (append-map (lambda (song)
+            (let* ((filename (symbol->string (car song)))
+                   (songvars (cdr song))
+                   (page-number (assoc-get (assq-ref songvars 'label) labelPageTable))
+                   (headermodule (ly:book-header (assq-ref songvars 'header))))
+              (map (lambda (module) (song-line filename page-number module))
+                   (cons headermodule (embedded-songs-of-header headermodule)))))
             (alist-delete 'markupPage (alist-delete 'imagePage (alist-delete 'emptyPage song-list))))))
-    (call-with-output-file csv-filename
+    (call-with-output-file "toc.csv"
       (lambda (port)
        (csv-write (cons '(
         "filename"

public_includes/layout_bottom.ily

@@ -1,10 +1,17 @@
 MUSIC = { \transposable #TRANSPOSITION \MUSIC }
 
+%% Eingebettete Lieder (siehe embedded_songs.ily) im Header des Hauptlieds
+%% vermerken, daraus bauen Footer, PDF-Lesezeichen und Verzeichnisse.
+#(if (and (pair? EMBEDDED_SONGS) (ly:book? HEADER) (ly:book-header HEADER))
+  (module-define! (ly:book-header HEADER) 'embeddedsongs EMBEDDED_SONGS))
+
 LAYOUT = \layout {
   \LAYOUT
   #(customized-layout LAYOUT)
 }
 
+#(customize-embedded-score-layouts! (list TEXT TEXT_PAGES))
+
 verselayout = \layout {
   \LAYOUT
   \context {
@@ -72,68 +79,34 @@ TEXT = \markuplist {
     (if paper (set! $defaultpaper paper))
   )
 
-  ;; Meta-Daten des Liedes als YAML neben die Ausgabedatei schreiben
+  ;; ChordPro export: Store filename and extract metadata from basicSongInfo FIRST
-  ;; (<ly:parser-output-name>.yml, landet wie das PDF relativ zum
-  ;; Arbeitsverzeichnis). Die Textseiten-Strophen kommen aus dem
-  ;; Render-Collector (chordpro.ily), deshalb wird erst bei der Ausgabe
-  ;; geschrieben: unsichtbarer delayed Stencil an der letzten Textseite.
-  ;; Ohne (nicht-leere) Textseiten gibt es keine Collector-Daten und die
-  ;; yml wird sofort geschrieben.
-  (when (and (defined? 'yaml-export-enabled) yaml-export-enabled)
-    ;; Collector-Daten auch ohne ChordPro-Flag unter dem Ausgabenamen sammeln
-    (set! chordpro-default-song-key (ly:parser-output-name))
-    (if (any pair? TEXT_PAGES)
-      (let* ((last-index (- (length TEXT_PAGES) 1))
-             (last-page (list-ref TEXT_PAGES last-index))
-             (trigger-stencil (yaml-delayed-song-write
-                               (ly:parser-output-name) HEADER MUSIC))
-             (modified-last-page #{
-               \markuplist {
-                 #last-page
-                 \stencil #trigger-stencil
-               }
-             #}))
-        (set! TEXT_PAGES
-          (append (list-head TEXT_PAGES last-index)
-                  (list modified-last-page))))
-      (scm->yml-file
-        (string-append (ly:parser-output-name) ".yml")
-        (extract-song-data HEADER MUSIC #f (ly:parser-output-name)))))
-
-  ;; ChordPro export (Einzellied): Song-Key ist der Ausgabename (die .cho
-  ;; landet wie das PDF relativ zum Arbeitsverzeichnis); Titel/Autoren
-  ;; kommen aus HEADER in den per-Song-Store.
   (when (and (defined? 'chordpro-export-enabled) chordpro-export-enabled)
-    (set! chordpro-default-song-key (ly:parser-output-name))
+    ;; Use ly:parser-output-name which returns the output basename
-    (chordpro-register-song-metadata chordpro-default-song-key HEADER))
+    ;; This will write relative to current working directory (same as PDF)
+    (let ((output-name (ly:parser-output-name)))
+      (set! chordpro-current-filename output-name))
+
+    ;; Try to extract metadata from the HEADER (falls back to basicSongInfo)
+    (let ((header-module (if (and (ly:book? HEADER) (ly:book-header HEADER))
+                             (ly:book-header HEADER)
+                             (and (defined? 'basicSongInfo) basicSongInfo))))
+      (when header-module
+        (let* ((header-alist (ly:module->alist header-module))
+               (title (assoc-ref header-alist 'title))
+               (authors (assoc-ref header-alist 'authors)))
+          (when title
+            (set! chordpro-header-title
+                  (if (markup? title)
+                      (markup->string title)
+                      (if (string? title) title "Untitled"))))
+          (when authors
+            (set! chordpro-header-authors authors))))))
 
-  ;; ChordPro_music_collector (Strophen unter den Noten, siehe chordpro.ily)
-  ;; braucht den aktiven Song-Key VOR der Interpretation des Hauptscores.
-  ;; \consists nur bei chordpro-include-music-lyrics -- sonst keine Kosten
-  ;; (Grob-Acknowledger fuer JEDEN Akkord/jede Silbe/Strophenmarker des
-  ;; Hauptscores) fuer Lieder/Buecher, die das Feature nicht nutzen. Bewusst
-  ;; NICHT zusaetzlich an chordpro-export-enabled gekoppelt: die Flag ist
-  ;; eigenstaendig gedacht (steuert nur, ob \chordpro-delayed-write bzw.
-  ;; \write-book-chordpro am Ende tatsaechlich etwas schreiben -- ob dafuer
-  ;; Daten gesammelt wurden, ist eine davon unabhaengige Entscheidung).
-  (set! chordpro-active-song-key (ly:parser-output-name))
-  (if (and (defined? 'chordpro-include-music-lyrics) chordpro-include-music-lyrics)
-    (add-score #{
-      \score {
-        \MUSIC
-        \layout {
-          \LAYOUT
-          \context {
-            \Score
-            \consists \ChordPro_music_collector
-          }
-        }
-      }#})
   (add-score #{
     \score {
       \MUSIC
       \layout { \LAYOUT }
-      }#}))
+    }#})
   (add-text-pages TEXT_PAGES)
 
   (add-score #{