text: --[[
   * ReaScript Name: Delete selected items active take envelopes
   * Author: IXix
   * Link:
        Forum http://forum.cockos.com/showthread.php?t=179032
   * Licence: GPL v3
   * REAPER: 5.0
   * Extensions: None
   * Version: 1.0
  --]]
   
  --[[
   * Changelog:
   * v1.0 (2016-10-29)
  	+ Initial Release
  --]]
  
  -- Uploaded by X-Raym
  
  reaper.PreventUIRefresh(1)
  
  reaper.Undo_BeginBlock()
  
  selItemCount = reaper.CountSelectedMediaItems(pProj)
  i = 0
  while i < selItemCount do
      pItem = reaper.GetSelectedMediaItem(pProj, i)
      pTake = reaper.GetMediaItemTake(pItem, 0)
      
      itemchunk = "";
      envchunk = ""
      result, itemchunk = reaper.GetItemStateChunk(pItem, itemchunk, 1)
          
      envCount = reaper.CountTakeEnvelopes(pTake)
      e = 0
      while e < envCount do
          pEnv = reaper.GetTakeEnvelope(pTake, e)          
  
          result, envchunk = reaper.GetEnvelopeStateChunk(pEnv, envchunk, 1)
          
          x, y = string.find(itemchunk, envchunk, 0, 0)
          
          if x and y then
              itemchunk = string.sub(itemchunk, 0, x - 1) .. string.sub(itemchunk, y , 0)
          end
          
          --reaper.ShowConsoleMsg(itemchunk)
              
          e = e + 1
      end
      
      reaper.SetItemStateChunk(pItem, itemchunk, 1);
          
      reaper.UpdateItemInProject(pItem)
      
      i = i + 1
  end
  
  reaper.Undo_EndBlock("Delete selected items active take envelopes", -1)
  
  reaper.UpdateArrange()
  reaper.UpdateTimeline()
  
  reaper.PreventUIRefresh(-1)
  