patch 7.4.1711
Problem: When using try/catch in 'statusline' it is still considered an
error and the status line will be disabled.
Solution: Check did_emsg instead of called_emsg. (haya14busa, closes #729)
diff --git a/src/testdir/test_statusline.vim b/src/testdir/test_statusline.vim
new file mode 100644
index 0000000..82898df
--- /dev/null
+++ b/src/testdir/test_statusline.vim
@@ -0,0 +1,39 @@
+function! StatuslineWithCaughtError()
+ let s:func_in_statusline_called = 1
+ try
+ call eval('unknown expression')
+ catch
+ endtry
+ return ''
+endfunction
+
+function! StatuslineWithError()
+ let s:func_in_statusline_called = 1
+ call eval('unknown expression')
+ return ''
+endfunction
+
+function! Test_caught_error_in_statusline()
+ let s:func_in_statusline_called = 0
+ set laststatus=2
+ let statusline = '%{StatuslineWithCaughtError()}'
+ let &statusline = statusline
+ redrawstatus
+ call assert_true(s:func_in_statusline_called)
+ call assert_equal(statusline, &statusline)
+ set statusline=
+endfunction
+
+function! Test_statusline_will_be_disabled_with_error()
+ let s:func_in_statusline_called = 0
+ set laststatus=2
+ let statusline = '%{StatuslineWithError()}'
+ try
+ let &statusline = statusline
+ redrawstatus
+ catch
+ endtry
+ call assert_true(s:func_in_statusline_called)
+ call assert_equal('', &statusline)
+ set statusline=
+endfunction