2 files changed, 27 insertions, 0 deletions
diff --git a/test/functional/editor/completion_spec.lua b/test/functional/editor/completion_spec.lua
index befad29922..1a0ee54505 100644
--- a/test/functional/editor/completion_spec.lua
+++ b/test/functional/editor/completion_spec.lua
@@ -1193,4 +1193,23 @@ describe('completion', function()
     eq('foobar', eval('g:word'))
     feed('<esc>')
   end)
+
+  it('does not crash if text is changed by first call to complete function #17489', function()
+    source([[
+      func Complete(findstart, base) abort
+        if a:findstart
+          let col = col('.')
+          call complete_add('#')
+          return col - 1
+        else
+          return []
+        endif
+      endfunc
+
+      set completeopt=longest
+      set completefunc=Complete
+    ]])
+    feed('ifoo#<C-X><C-U>')
+    assert_alive()
+  end)
 end)
diff --git a/test/functional/lua/command_line_completion_spec.lua b/test/functional/lua/command_line_completion_spec.lua
index 3ba7e1589f..3a5966755e 100644
--- a/test/functional/lua/command_line_completion_spec.lua
+++ b/test/functional/lua/command_line_completion_spec.lua
@@ -106,6 +106,14 @@ describe('nlua_expand_pat', function()
     )
   end)
 
+  it('should work with lazy submodules of "vim" global', function()
+    eq({{ 'inspect' }, 4 },
+       get_completions('vim.inspec'))
+
+    eq({{ 'set' }, 11 },
+       get_completions('vim.keymap.se'))
+  end)
+
   it('should be able to interpolate globals', function()
     eq(
       {{