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-rw-r--r--test/functional/legacy/autocmd_spec.lua40
1 files changed, 40 insertions, 0 deletions
diff --git a/test/functional/legacy/autocmd_spec.lua b/test/functional/legacy/autocmd_spec.lua
new file mode 100644
index 0000000000..97051f3d3f
--- /dev/null
+++ b/test/functional/legacy/autocmd_spec.lua
@@ -0,0 +1,40 @@
+local helpers = require('test.functional.helpers')(after_each)
+local clear = helpers.clear
+local write_file = helpers.write_file
+local command = helpers.command
+local feed = helpers.feed
+local api = helpers.api
+local eq = helpers.eq
+
+before_each(clear)
+
+-- oldtest: Test_autocmd_invalidates_undo_on_textchanged()
+it('no E440 in quickfix window when autocommand invalidates undo', function()
+ write_file(
+ 'XTest_autocmd_invalidates_undo_on_textchanged',
+ [[
+ set hidden
+ " create quickfix list (at least 2 lines to move line)
+ vimgrep /u/j %
+
+ " enter quickfix window
+ cwindow
+
+ " set modifiable
+ setlocal modifiable
+
+ " set autocmd to clear quickfix list
+
+ autocmd! TextChanged <buffer> call setqflist([])
+ " move line
+ move+1
+ ]]
+ )
+ finally(function()
+ os.remove('XTest_autocmd_invalidates_undo_on_textchanged')
+ end)
+ command('edit XTest_autocmd_invalidates_undo_on_textchanged')
+ command('so %')
+ feed('G')
+ eq('', api.nvim_get_vvar('errmsg'))
+end)