patch 8.2.0400: not all tests using a terminal are in the list of flaky tests
Problem: Not all tests using a terminal are in the list of flaky tests.
Solution: Introduce the test_is_flaky flag.
diff --git a/src/testdir/test_autocmd.vim b/src/testdir/test_autocmd.vim
index 7e3035a..84c46cf 100644
--- a/src/testdir/test_autocmd.vim
+++ b/src/testdir/test_autocmd.vim
@@ -1868,6 +1868,8 @@
func Test_Changed_FirstTime()
CheckFeature terminal
CheckNotGui
+ " Starting a terminal to run Vim is always considered flaky.
+ let test_is_flaky = 1
" Prepare file for TextChanged event.
call writefile([''], 'Xchanged.txt')