vim-patch:9.1.0996: ComplMatchIns may highlight wrong text (#31931)

Problem:  ComplMatchIns may highlight wrong text
Solution: don't highlight in case of fuzzy match,
          skip-highlight when not inserting anything
          (glepnir)

closes: vim/vim#16404

https://github.com/vim/vim/commit/e890887b8052561ac5f8dce218e578ed28599cc6

1 files changed, 33 insertions, 0 deletions

diff --git a/test/functional/ui/popupmenu_spec.lua b/test/functional/ui/popupmenu_spec.lua
index 60d59190ce..66b62341a9 100644
--- a/test/functional/ui/popupmenu_spec.lua
+++ b/test/functional/ui/popupmenu_spec.lua
@@ -5853,6 +5853,39 @@ describe('builtin popupmenu', function()
           {2:-- INSERT --}                    |
         ]])
         feed('<Esc>')
+
+        -- Does not highlight the compl leader
+        command('set cot+=menuone,noselect')
+        feed('S<C-X><C-O>')
+        local pum_start = [[
+          {10:^                                }|
+          {n:foo            }{1:                 }|
+          {n:bar            }{1:                 }|
+          {n:你好           }{1:                 }|
+          {1:~                               }|*15
+          {2:-- }{8:Back at original}             |
+        ]]
+        screen:expect(pum_start)
+        feed('f<C-N>')
+        screen:expect([[
+          {10:f}{9:oo}{10:^                             }|
+          {s:foo            }{1:                 }|
+          {1:~                               }|*17
+          {2:-- }{5:match 1 of 3}                 |
+        ]])
+        feed('<C-E><ESC>')
+
+        command('set cot+=fuzzy')
+        feed('S<C-X><C-O>')
+        screen:expect(pum_start)
+        feed('f<C-N>')
+        screen:expect([[
+          {10:foo^                             }|
+          {s:foo            }{1:                 }|
+          {1:~                               }|*17
+          {2:-- }{5:match 1 of 3}                 |
+        ]])
+        feed('<Esc>')
       end)
     end
   end