patch 8.2.1183: assert_fails() checks the last error message Commit: https://github.com/vim/vim/commit/9b7bf9e98f06ece595fed7a3ff53ecce89797a53 Author: Bram Moolenaar <Bram@vim.org> Date: Sat Jul 11 22:14:59 2020 +0200 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.

--- a/src/message.c
+++ b/src/message.c
@@ -654,6 +654,9 @@ emsg_core(char_u *s)
 	    return TRUE;
 	}
 
+	if (emsg_assert_fails_used && emsg_assert_fails_msg == NULL)
+	    emsg_assert_fails_msg = vim_strsave(s);
+
 	// set "v:errmsg", also when using ":silent! cmd"
 	set_vim_var_string(VV_ERRMSG, s, -1);
 #endif