Release Insert =START and =END markers to time selection for subprojects v1.1 (#727)

Script now first removes existing =START and =END markers to avoid confusion

Author: Kabraxist

Rendering/uorcun_Insert start and end markers to time selection for subprojects.lua

@@ -1,11 +1,21 @@
 -- @description Insert =START and =END markers to time selection for subprojects
 -- @author Ugurcan Orcun
--- @version 1.0
--- @about Automatically inserts =START and =END to each side of time selection. Rendering Subprojects obey these two markers.
+-- @version 1.1
+-- @changelog Script now first removes existing =START and =END markers to avoid confusion
+-- @about Automatically inserts =START and =END markers to each side of time selection. Rendering Subprojects obey these two markers.
 
 reaper.Undo_BeginBlock()
 marker_start, marker_end = reaper.GetSet_LoopTimeRange(false, true, 0, 0, 0)
 
+--Remove existing markers
+for i = reaper.CountProjectMarkers(0), 0, -1 do
+  a, b, c, d, name, index = reaper.EnumProjectMarkers2(0,i)
+  if (name == "=START") or (name == "=END") then
+    reaper.DeleteProjectMarkerByIndex(0, i)
+  end
+end
+
+--Add new markers
 if marker_start < marker_end then
   reaper.AddProjectMarker(0, false, marker_start, 0, "=START", -1)
   reaper.AddProjectMarker(0, false, marker_end, 0, "=END", -1)