patch 8.2.0522: several errors are not tested for
Problem: Several errors are not tested for.
Solution: Add tests. (Yegappan Lakshmanan, closes #5892)
diff --git a/src/testdir/test_ins_complete.vim b/src/testdir/test_ins_complete.vim
index 3a83577..b7893ff 100644
--- a/src/testdir/test_ins_complete.vim
+++ b/src/testdir/test_ins_complete.vim
@@ -465,3 +465,23 @@
set tags&
%bwipe!
endfunc
+
+" Test for 'completefunc' deleting text
+func Test_completefunc_error()
+ new
+ func CompleteFunc(findstart, base)
+ if a:findstart == 1
+ normal dd
+ return col('.') - 1
+ endif
+ return ['a', 'b']
+ endfunc
+ set completefunc=CompleteFunc
+ call setline(1, ['', 'abcd', ''])
+ call assert_fails('exe "normal 2G$a\<C-X>\<C-U>"', 'E840:')
+ set completefunc&
+ delfunc CompleteFunc
+ close!
+endfunc
+
+" vim: shiftwidth=2 sts=2 expandtab