patch 8.2.1183: assert_fails() checks the last error message
Problem: assert_fails() checks the last error message.
Solution: Check the first error, it is more relevant. Fix all the tests
that rely on the old behavior.
diff --git a/src/testdir/test_excmd.vim b/src/testdir/test_excmd.vim
index 2c693e2..150e258 100644
--- a/src/testdir/test_excmd.vim
+++ b/src/testdir/test_excmd.vim
@@ -335,8 +335,8 @@
call assert_fails('redir abc', 'E475:')
call assert_fails('redir => 1abc', 'E474:')
call assert_fails('redir => a b', 'E488:')
- call assert_fails('redir => abc[1]', 'E474:')
- let b=0zFF
+ call assert_fails('redir => abc[1]', 'E121:')
+ let b = 0zFF
call assert_fails('redir =>> b', 'E734:')
unlet b