add some mouse stuff to the terminal mode

.vimrc

@@ -397,8 +397,25 @@ let g:terminal_ansi_colors = [
   \ '#ffffff'
   \ ]
 
+autocmd TerminalOpen * set nonu
+
 highlight Terminal guibg='#0c0c0c'
 highlight Terminal guifg='#cccccc'
+
+function! ExitNormalMode()
+    unmap <buffer> <silent> <RightMouse>
+    call feedkeys("a")
+endfunction
+
+function! EnterNormalMode()
+    if &buftype == 'terminal' && mode('') == 't'
+        call feedkeys("\<c-w>N")
+        call feedkeys("\<c-y>")
+        map <buffer> <silent> <RightMouse> :call ExitNormalMode()<CR>
+    endif
+endfunction
+
+tmap <silent> <ScrollWheelUp> <c-w>:call EnterNormalMode()<CR>
 " ---------------------------------------------------------------------------}}}
 
 " Operator-Pending Mode -----------------------------------------------------{{{