added allow-overlap parameter for notes

src/core/renderer.typ

@@ -82,12 +82,12 @@
   let (p1, p2) = (none, none)
   let cell = none
   if note.side == "left" {
-    p1 = "["
+    p1 = note.pos2
     p2 = note.pos
     cell = get-note-box(note)
   } else if note.side == "right" {
     p1 = note.pos
-    p2 = "]"
+    p2 = note.pos2
     cell = get-note-box(note)
   } else if note.side == "over" and note.aligned-with != none {
     let box1 = get-note-box(note)

src/core/setup.typ

@@ -126,8 +126,8 @@
     "linked",
     note.pos == none and note.side != "across"
   )
+  let names = ctx.participants.map(p => p.name)
   if note.pos == none and note.side != "across" {
-    let names = ctx.participants.map(p => p.name)
     let i1 = names.position(n => n == ctx.last-seq.p1)
     let i2 = names.position(n => n == ctx.last-seq.p2)
     let pars = (
@@ -150,10 +150,26 @@
     n.aligned-with = note
     ctx.elmts.at(ctx.last-note.i) = n
   }
-  if note.side == "left" {
-    ctx.linked.push("[")
-  } else if note.side == "right" {
-    ctx.linked.push("]")
+
+  if note.side in ("left", "right") {
+    let i = names.position(n => n == note.pos)
+    let pos2 = note.pos
+    if note.side == "left" {
+      if i <= 0 or note.allow-overlap {
+        ctx.linked.push("[")
+        pos2 = "["
+      } else {
+        pos2 = names.at(i - 1)
+      }
+    } else if note.side == "right" {
+      if i >= names.len() - 1 or note.allow-overlap {
+        ctx.linked.push("]")
+        pos2 = "]"
+      } else {
+        pos2 = names.at(i + 1)
+      }
+    }
+    note.insert("pos2", pos2)
   }
 
   let pars = none