MusicXML: Make tuplet detection work a bit better with nested tuplets

At least the script now detects the correct boundaries for nested
tuplets. It does not, however, correctly group the notes. For this,
the code needs to be substantially changed...

diff --git a/scripts/musicxml2ly.py b/scripts/musicxml2ly.py
index 4a04cb4af857c6c936f325b22700902e58f29cc6..e2a54008e321eef92b447d57d51f77a525eb710b 100644 (file)
--- a/scripts/musicxml2ly.py
+++ b/scripts/musicxml2ly.py
@@ -603,6 +603,7 @@ def group_tuplets (music_list, events):
 
     
     indices = []
+    brackets = {}
 
     j = 0
     for (ev_chord, tuplet_elt, fraction) in events:
@@ -610,10 +611,16 @@ def group_tuplets (music_list, events):
             if music_list[j] == ev_chord:
                 break
             j += 1
+        nr = tuplet_elt.number
         if tuplet_elt.type == 'start':
-            indices.append ((j, None, fraction))
+            tuplet_info = [j, None, fraction]
+            indices.append (tuplet_info)
+            brackets[nr] = tuplet_info
         elif tuplet_elt.type == 'stop':
-            indices[-1] = (indices[-1][0], j, indices[-1][2])
+            bracket_info = brackets.get (nr, None)
+            if bracket_info:
+                bracket_info[1] = j
+                del brackets[nr]
 
     new_list = []
     last = 0