vim-patch:9.0.0756 #20680

Problem:    No autocmd event for changing text in a terminal window.
Solution:   Add TextChangedT. (Shougo Matsushita, closes vim/vim#11366)

4ccaedfcd7

test/functional/terminal/buffer_spec.lua

@@ -410,6 +410,14 @@ describe('on_lines does not emit out-of-bounds line indexes when', function()
     feed_command('bdelete!')
     eq('', exec_lua([[return _G.cb_error]]))
   end)
+
+  it('runs TextChangedT event', function()
+    meths.set_var('called', 0)
+    command('autocmd TextChangedT * ++once let g:called = 1')
+    feed_command('terminal')
+    feed('iaa')
+    eq(1, meths.get_var('called'))
+  end)
 end)
 
 it('terminal truncates number of composing characters to 5', function()