Bugfixes, simplifications

Implementation/Peered/NoteEditor/NoteTextEditor.swift

@@ -2,60 +2,15 @@ import SwiftUI
 
 struct NoteTextEditor: View {
     @Binding var text: String
-    let remoteText: String?
-    @State private var selection: TextSelection? = nil
-
-    var body: some View {
-        TextEditor(text: $text, selection: $selection)
-            .onChange(of: remoteText) { oldValue, newValue in
-                guard let newValue, newValue != text else { return }
-
-                let previousRemote = oldValue ?? text
-
-                // Where the remote edit begins
-                let changeStart = commonPrefixUTF16Length(previousRemote, newValue)
-
-                // How many UTF-16 units were inserted (positive) or removed (negative)
-                let delta = newValue.utf16.count - previousRemote.utf16.count
-
-                // Apply remote text first
-                text = newValue
-
-                // Get current cursor offset
-                guard
-                    let selection,
-                    case .selection(let range) = selection.indices,
-                    let cursorPos = range.lowerBound.samePosition(in: text.utf16)
-                else { return }
-
-                let cursorUTF16 = text.utf16.distance(
-                    from: text.utf16.startIndex,
-                    to: cursorPos
-                )
-
-                // Only shift if the change happened strictly before the cursor
-                guard changeStart < cursorUTF16 else { return }
-
-                let newCursorUTF16 = max(0, min(cursorUTF16 + delta, newValue.utf16.count))
-                let newUTF16 = newValue.utf16
-                let newUTF16Index = newUTF16.index(newUTF16.startIndex, offsetBy: newCursorUTF16)
-                guard let newIndex = newUTF16Index.samePosition(in: newValue) else { return }
-
-                self.selection = TextSelection(range: newIndex..<newIndex)
-            }
-    }
-
-    private func commonPrefixUTF16Length(_ a: String, _ b: String) -> Int {
-        var count = 0
-        let aUTF16 = a.utf16
-        let bUTF16 = b.utf16
-        let minLen = min(aUTF16.count, bUTF16.count)
-        while count < minLen {
-            let aIdx = aUTF16.index(aUTF16.startIndex, offsetBy: count)
-            let bIdx = bUTF16.index(bUTF16.startIndex, offsetBy: count)
-            guard aUTF16[aIdx] == bUTF16[bIdx] else { break }
-            count += 1
-        }
-        return count
-    }
+	let remoteText: String?
+	@State private var selection: TextSelection? = nil
+	
+	var body: some View {
+		TextEditor(text: $text, selection: $selection)
+			.onChange(of: remoteText) { oldValue, newValue in
+				guard let newValue, newValue != text else { return }
+				// Apply remote text first
+				text = newValue
+			}
+	}
 }