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
diff --git a/src/testdir/test_tabline.vim b/src/testdir/test_tabline.vim
new file mode 100644
index 0000000..6c7a02d
--- /dev/null
+++ b/src/testdir/test_tabline.vim
@@ -0,0 +1,43 @@
+function! TablineWithCaughtError()
+ let s:func_in_tabline_called = 1
+ try
+ call eval('unknown expression')
+ catch
+ endtry
+ return ''
+endfunction
+
+function! TablineWithError()
+ let s:func_in_tabline_called = 1
+ call eval('unknown expression')
+ return ''
+endfunction
+
+function! Test_caught_error_in_tabline()
+ let showtabline_save = &showtabline
+ set showtabline=2
+ let s:func_in_tabline_called = 0
+ let tabline = '%{TablineWithCaughtError()}'
+ let &tabline = tabline
+ redraw!
+ call assert_true(s:func_in_tabline_called)
+ call assert_equal(tabline, &tabline)
+ set tabline=
+ let &showtabline = showtabline_save
+endfunction
+
+function! Test_tabline_will_be_disabled_with_error()
+ let showtabline_save = &showtabline
+ set showtabline=2
+ let s:func_in_tabline_called = 0
+ let tabline = '%{TablineWithError()}'
+ try
+ let &tabline = tabline
+ redraw!
+ catch
+ endtry
+ call assert_true(s:func_in_tabline_called)
+ call assert_equal('', &tabline)
+ set tabline=
+ let &showtabline = showtabline_save
+endfunction