show misrepresentation of grob location in tuplet (slur)

usage-examples/annotate.ly

@@ -11,21 +11,26 @@
 \setOption scholarly.annotate.export-targets #'(plaintext latex)
 
 music = \relative c'{
-  c4 d e
+  c4 d
     \criticalRemark \with {
       message = "Go to \\textit{school} and \\textcolor{red}{sit back}! This
         is a second sentence, which\fnblue has a footnote."
-      fn-blue-text = "This is my \uppercase{first nested footnote}, for the \\textcolor{red}{second sentence} of the first annotation."
-      fn-yellow-text = "This is another nested footnote for the first annotation, but it isn't used."
+      fn-blue-txt = "This is my \uppercase{first nested footnote}, for the \\textcolor{red}{second sentence} of the first annotation."
+      fn-yellow-txt = "This is another nested footnote for the first annotation, but it isn't used."
       ann-footnote = "This is a footnote for the entire annotation."
     }
     NoteHead
-  f ( |
-  g a ) b c
+  e ( f )
+
+  |
+
     \musicalIssue \with {
       message = "This is a musical issue with not footnotes."
     }
     Staff.KeySignature
+
+  |
+
   \key a \major
   a d
   <<
@@ -46,20 +51,37 @@ music = \relative c'{
     }
   >>
   \oneVoice
+
+  |
+
   e
     \lilypondIssue \with {
       message = "A message about the trill."
     }
     TrillSpanner
   cis2\startTrillSpan
   d4\stopTrillSpan
-  b
-    \question \with {
-      message = "A question with a footnote\fnRandom about the slur."
-      fn-R-a-n-d-o-m-text = "A random footnote for the question."
+
+  |
+
+    \todo \with {
+      message = "Print this tuplet number."
     }
-    Slur
-  gis8( a) b4
+    TupletNumber
+
+  \tuplet 3/2 {
+    b8
+    % the following annotation is at 2/3 of beat one. mathematically it
+    % spans 1/3 to 2/3 through beat 1, but we need it to say 2/3 to denote
+    % that it is the second of three tuplet subdivisions in that beat.
+      \question \with {
+        message = "A question with a footnote\fnRandom about the slur."
+        fn-R-a-n-d-o-m-txt = "A random footnote for the question."
+      }
+      Slur
+    gis( a)
+  }
+  b4
 }
 
 \score { \music }