patch 7.4.1723
Problem:    When using try/catch in 'tabline' it is still considered an
            error and the tabline will be disabled.
Solution:   Check did_emsg instead of called_emsg. (haya14busa, closes #746)
diff --git a/src/testdir/test_alot.vim b/src/testdir/test_alot.vim
index 1eb76a6..7f9a1a7 100644
--- a/src/testdir/test_alot.vim
+++ b/src/testdir/test_alot.vim
@@ -24,6 +24,7 @@
 source test_sort.vim
 source test_statusline.vim
 source test_syn_attr.vim
+source test_tabline.vim
 source test_timers.vim
 source test_undolevels.vim
 source test_unlet.vim