AutoHotkey sctipt for auto copy mouse selected plain text and past for middle mouse button

CopyPast.ahk

;For Firefox should set middlemouse.paste to true, in about:config

#NoEnv  ; Recommended for performance and compatibility with future AutoHotkey releases.
; #Warn  ; Enable warnings to assist with detecting common errors.
SendMode Input  ; Recommended for new scripts due to its superior speed and reliability.

;Exclude applications for auto copy by mouse selected
GroupAdd, NoCopy, ahk_class CASCADIA_HOSTING_WINDOW_CLASS ;Windows Terminal
GroupAdd, NoCopy, ahk_class ConsoleWindowClass ;CMD and PowerShell
GroupAdd, NoCopy, ahk_exe Explorer.EXE ;Windows Explorer
GroupAdd, NoCopy, ahk_class TTOTAL_CMD ;Total Commander

;Exclude applications for past by mouse middle button
GroupAdd, NoPast, ahk_class MozillaWindowClass
GroupAdd, NoPast, ahk_class CASCADIA_HOSTING_WINDOW_CLASS
GroupAdd, NoPast, ahk_class TTOTAL_CMD

CopyPlain()                      ; Text-only copy to ClipBoard
{
   Clip0 = %ClipBoardAll%
   ClipBoard =
   Send ^c
   ClipWait 2                    ; Wait for text, up to 2s
   If ErrorLevel
      ClipBoard = %Clip0%        ; Restore original ClipBoard
   Else
      ClipBoard = %ClipBoard%    ; Convert to text
   VarSetCapacity(Clip0, 0)      ; Free memory
Return 
}


#IfWinNotActive ahk_group NoCopy

~LButton::
  if (A_ThisHotkey = A_PriorHotkey && A_TimeSincePriorHotkey < 200) ;double and tripple click celection text copy
    Sleep, 200
    CopyPlain() ;;SendInput ^c
  cos_mousedrag_treshold := 20 ; pixels
  MouseGetPos, cos_mousedrag_x, cos_mousedrag_y
  keywait lbutton
  mousegetpos, cos_mousedrag_x2, cos_mousedrag_y2
  if (abs(cos_mousedrag_x2 - cos_mousedrag_x) > cos_mousedrag_treshold
    or abs(cos_mousedrag_y2 - cos_mousedrag_y) > cos_mousedrag_treshold)
  {
    WinGetClass cos_class, A
    if (cos_class == "Emacs")
      SendInput !w
    else
      CopyPlain() 
  }
Return

#IfWinNotActive ahk_group NoPast

~MButton::
  WinGetClass cos_class, A
  ;; emacs does pasting on middleclick by itself
  if (cos_class <> "Emacs")
    SendInput ^v
Return

#IfWinActive ahk_class CASCADIA_HOSTING_WINDOW_CLASS
~MButton::
  SendInput ^+v
Return

Locked my mouse, here a working version for me: https://gist.github.com/insign/96e451503bdb927c6e38c8e8f885bc7c