rework authorsystem

* add translation, interlude, bridge and meloverse
* fix rendering bugs

footer_with_songinfo.ly

@@ -1,3 +1,4 @@
+#(use-modules (ice-9 receive))
 #(define-markup-command (print-songinfo layout props) ()
   (define (songinfo-from songId key)
     (let ((song (if (defined? 'SONG_DATA) (assoc-ref SONG_DATA songId) #f)))
@@ -62,17 +63,26 @@
   )
 
   (define (render-contribution-group contributionPrefix authorIds)
-      (string-append contributionPrefix " " (string-join (format-authors authorIds) ", "))
+    (if (null? authorIds)
+      ""
+      (string-append contributionPrefix " " (string-join (format-authors authorIds) ", ")))
   )
 
   (define (render-partial-contribution-group prefixLookup authorData)
-    (string-join
-      (map (lambda (authorEntry) (render-contribution-group (numbered-contribution-prefix (cdr authorEntry) prefixLookup) (list (car authorEntry)))) authorData)
-      " ")
+    (if (null? authorData)
+      ""
+      (let ((firstAuthorContributions (cdar authorData)))
+        (receive (authorDataSame authorDataOther)
+            (partition (lambda (authorEntry) (equal? (cdr authorEntry) firstAuthorContributions)) authorData)
+          (string-append
+            (render-contribution-group (numbered-contribution-prefix firstAuthorContributions prefixLookup) (map car authorDataSame))
+            " "
+            (render-partial-contribution-group prefixLookup authorDataOther)
+          ))))
   )
 
-  (define (join-present items)
-    (string-join (filter string? items) "; ")
+  (define (join-present items joiner)
+    (string-join (filter (lambda (item) (and (string? item) (not (string-null? (string-trim-both item))))) items) joiner)
   )
 
   (define (poet-and-composer-from-authors authors)
@@ -87,6 +97,10 @@
             (compositionIds (find-author-ids-by 'composition authors))
             (bridgeIds (find-author-ids-by 'bridge authors))
             (interludeIds (find-author-ids-by 'interlude authors))
+            (year_text (chain-assoc-get 'header:year_text props #f))
+            (year_translation (chain-assoc-get 'header:year_translation props #f))
+            (year_melody (chain-assoc-get 'header:year_melody props #f))
+            (year_composition (chain-assoc-get 'header:year_composition props #f))
             )
         (if (and (equal? poetIds composerIds) (null? translatorIds) (null? versePoetData) (null? verseComposerData) (null? voiceComposerData) (null? compositionIds) (null? bridgeIds) (null? interludeIds))
           (list
@@ -98,41 +112,35 @@
                 (ly:output-def-lookup layout 'poetPrefix)
                 " "
                 (join-present (list
-                  (if (not (null? poetIds))
+                  (join-present (list
                     (render-contribution-group "" poetIds)
-                    #f)
-                  (if (not (null? versePoetData))
-                    (render-partial-contribution-group 'versePrefix versePoetData)
-                    #f)
-                  (if (not (null? translatorIds))
+                    year_text
+                  ) ", ")
+                  (render-partial-contribution-group 'versePrefix versePoetData)
+                  (join-present (list
                     (render-contribution-group (ly:output-def-lookup layout 'translationPrefix) translatorIds)
-                    #f)
-                ))
+                    year_translation
+                  ) ", ")
+                ) "; ")
               ))
             (if (and (null? composerIds) (null? compositionIds) (null? verseComposerData) (null? voiceComposerData) (null? bridgeIds) (null? interludeIds)) #f
               (string-append
                 (ly:output-def-lookup layout 'composerPrefix)
                 " "
                 (join-present (list
-                  (if (not (null? composerIds))
+                  (join-present (list
                     (render-contribution-group "" composerIds)
-                    #f)
-                  (if (not (null? verseComposerData))
-                    (render-partial-contribution-group 'versePrefix verseComposerData)
-                    #f)
-                  (if (not (null? voiceComposerData))
-                    (render-partial-contribution-group 'voicePrefix voiceComposerData)
-                    #f)
-                  (if (not (null? compositionIds))
+                    year_melody
+                  ) ", ")
+                  (render-partial-contribution-group 'versePrefix verseComposerData)
+                  (render-partial-contribution-group 'voicePrefix voiceComposerData)
+                  (join-present (list
                     (render-contribution-group (ly:output-def-lookup layout 'compositionPrefix) compositionIds)
-                    #f)
-                  (if (not (null? bridgeIds))
-                    (render-contribution-group (ly:output-def-lookup layout 'bridgePrefix) bridgeIds)
-                    #f)
-                  (if (not (null? interludeIds))
-                    (render-contribution-group (ly:output-def-lookup layout 'interludePrefix) interludeIds)
-                    #f)
-                ))
+                    year_composition
+                  ) ", ")
+                  (render-contribution-group (ly:output-def-lookup layout 'bridgePrefix) bridgeIds)
+                  (render-contribution-group (ly:output-def-lookup layout 'interludePrefix) interludeIds)
+                ) "; ")
               )))))
       (list #f #f)
     )
@@ -152,8 +160,8 @@
             (copyright (chain-assoc-get 'header:copyright props #f))
             (translation (chain-assoc-get 'header:translation props #f))
             (pronunciation (chain-assoc-get 'header:pronunciation props #f))
-            (year_text (chain-assoc-get 'header:year_text props #f))
-            (year_melody (chain-assoc-get 'header:year_melody props #f)))
+            (year_text (if (string? (car poet-and-composers)) #f (chain-assoc-get 'header:year_text props #f)))
+            (year_melody (if (string? (car poet-and-composers)) #f (chain-assoc-get 'header:year_melody props #f))))
             (markup
               #:override (cons 'songinfo:poet-maybe-with-composer
                 (if (and poet-maybe-with-composer (not (and (string? poet-maybe-with-composer) (string-null? poet-maybe-with-composer)))) poet-maybe-with-composer #f))

verses_with_chords.ly

@@ -232,12 +232,12 @@
     #{
       \markup {
         \override #`(baseline-skip . ,intraverse-vspace)
-        \pad-left #-10
+        \pad-left #-5
         \score-equal-height #verse-line-height \score-lines {
           \transposable
           <<
             \new Devnull { #(if (ly:music? verse-break-voice) verse-break-voice) }
-            #(if (ly:music? verse-chords) verse-chords #{ \chords { \verseChords } #})
+            #(if (ly:music? verse-chords) (music-clone verse-chords) #{ \chords { \verseChords } #})
             \new NullVoice { #(if (ly:music? verse-reference-voice) verse-reference-voice #{ \global \firstVoice #}) }
             \addlyrics { #lyrics }
           >>
@@ -245,7 +245,7 @@
             \lyricsWithChordsLayout
             \context {
               \Staff
-              \override LeftEdge.space-alist.first-note = #'(fixed-space . 10.0)
+              \override LeftEdge.space-alist.first-note = #'(fixed-space . 5.0)
             }
           }
         }