What Essentials had:

        n = temp.length
        for m in 0...temp.length-1
          for i in 1...temp.length
            # For each pair of battlers, rank the second compared to the first.
            # -1 means rank higher, 0 means rank equal, 1 means rank lower
            cmp = 0
            if quickclaw[temp[i]]
              cmp = -1
              if quickclaw[temp[i-1]]
                if speeds[temp[i]]==speeds[temp[i-1]]
                  cmp = 0
                else
                  cmp = (speeds[temp[i]]>speeds[temp[i-1]]) ? -1 : 1
                end
              end
            elsif quickclaw[temp[i-1]]
              cmp = 1
            elsif lagging[temp[i]]
              cmp = 1
              if lagging[temp[i-1]]
                if speeds[temp[i]]==speeds[temp[i-1]]
                  cmp = 0
                else
                  cmp = (speeds[temp[i]]>speeds[temp[i-1]]) ? 1 : -1
                end
              end
            elsif lagging[temp[i-1]]
              cmp = -1
            elsif speeds[temp[i]]!=speeds[temp[i-1]]
              if @field.effects[PBEffects::TrickRoom]>0
                cmp = (speeds[temp[i]]>speeds[temp[i-1]]) ? 1 : -1
              else
                cmp = (speeds[temp[i]]>speeds[temp[i-1]]) ? -1 : 1
              end
            end
            if cmp<0 ||   # Swap the pair according to the second battler's rank
               (cmp==0 && pbRandom(2)==0)
              temp[i],temp[i-1] = temp[i-1],temp[i]
            end
          end
        end



What Essentials has now:

        # Sort by speed
        if @field.effects[PBEffects::TrickRoom]>0
          temp.sort!{|a,b| (a==b) ? pbRandom(2) : speeds[a]<=>speeds[b]}
        else
          temp.sort!{|a,b| (a==b) ? pbRandom(2) : speeds[b]<=>speeds[a]}
        end
        # Move Quick Clawers and laggers to the start/end
        q = []; l = []
        for i in 0...temp.length
          if quickclaw[temp[i]]
            q[q.length] = temp[i]; temp[i] = nil
          end
          if lagging[temp[i]]
            l[l.length] = temp[i]; temp[i] = nil
          end
        end
        temp.compact!
        temp = q + temp + l