terminal: block redraw during c_CTRL-D

Unlike the normal wildmenu, the CTRL-D wild-list is not restored by
statusline redraw. (Semantics: ^D is controlled by 'wildoptions' option,
so it's in the "wild..." family.)

TODO: externalize the c_CTRL-D wild-list.

1 files changed, 24 insertions, 2 deletions

diff --git a/test/functional/ui/wildmode_spec.lua b/test/functional/ui/wildmode_spec.lua
index 154f508924..42c92c4c2c 100644
--- a/test/functional/ui/wildmode_spec.lua
+++ b/test/functional/ui/wildmode_spec.lua
@@ -66,10 +66,10 @@ describe("'wildmenu'", function()
     else
       feed([[:terminal for i in $(seq 1 5000); do printf 'foo\nfoo\nfoo\n'; sleep 0.1; done<cr>]])
     end
-    screen:sleep(50)        -- Allow some output.
+
     feed([[<C-\><C-N>gg]])
     feed([[:sign <Tab>]])   -- Invoke wildmenu.
-    screen:sleep(50)        -- Allow some output.
+    screen:sleep(50)        -- Allow some terminal output.
     screen:expect([[
       foo                      |
       foo                      |
@@ -77,6 +77,28 @@ describe("'wildmenu'", function()
       define  jump  list  >    |
       :sign define^             |
     ]])
+
+    -- cmdline CTRL-D display should also be preserved.
+    feed([[<C-\><C-N>]])
+    feed([[:sign <C-D>]])   -- Invoke cmdline CTRL-D.
+    screen:sleep(50)        -- Allow some terminal output.
+    screen:expect([[
+      :sign                    |
+      define    place          |
+      jump      undefine       |
+      list      unplace        |
+      :sign ^                   |
+    ]])
+
+    -- Exiting cmdline should show the buffer.
+    feed([[<C-\><C-N>]])
+    screen:expect([[
+      ^foo                      |
+      foo                      |
+      foo                      |
+      foo                      |
+                               |
+    ]])
   end)
 
   it('ignores :redrawstatus called from a timer #7108', function()