Improve inventory display

Extant bugs: can get to INVENTORY heading section when deleting nearby
filter if inventory is empty

src/Dodge/DisplayInventory.hs

@@ -133,7 +133,7 @@ updateDisplaySections w cfig =
                 , nearbyhead
                 , sclose
                 , interfaceshead
-                , interfaces
+                , btitems
                 ]
         )
   where
@@ -146,9 +146,10 @@ updateDisplaySections w cfig =
     (sfclose, sclose) =
         filterSectionsPair closefiltcurs plainRegex closeitms "NEARBY ITEMS" $
             w ^? hud . hudElement . diCloseFilter . _Just
-    nearbyhead = if null sfclose then makehead "NEARBY ITEMS" else sfclose
+    nearbyhead 
+        | null sfclose && not (null sclose) = makehead "NEARBY ITEMS"
+        | otherwise = sfclose
     interfaceshead = if null btitems then mempty else makehead "NEARBY INTERFACES"
-    interfaces = btitems
     btitems =
         IM.fromDistinctAscList . zip [0 ..] $
             mapMaybe (closeButtonToSelectionItem w) (w ^. hud . closeButtons)
@@ -324,39 +325,7 @@ enterCombineInv cfig w =
     w & hud . hudElement . subInventory
         .~ CombineInventory
             { _ciSections = updateCombineSections w cfig mempty
-            , _ciSelection = selpos
+            , _ciSelection = Just (0,0,mempty)
             , _ciFilter = Nothing
             }
---        .~ CombineInventory
+        & hud . hudElement . diInvFilter .~ Nothing
---            { _ciSections = IM.fromDistinctAscList [(-1, filtsection), (0, combsection)]
---            , _ciSelection = selpos
---            , _ciFilter = Nothing
---            }
-        & hud . hudElement . diInvFilter
-        .~ Nothing
-  where
-    cm' = IM.fromDistinctAscList . zip [0 ..] $ combineList w
-    cm
-        | null cm' =
-            IM.singleton 0 $
-                SelectionInfo ["No possible combinations"] 1 25 False white 0
-        | otherwise = cm'
-    selpos
-        | null cm' = Nothing
-        | otherwise = Just (0, 0, mempty)
-    filtsection =
-        SelectionSection
-            { _ssItems = mempty
-            , _ssOffset = 0
-            , _ssShownItems = mempty
-            , _ssShownLength = 0
-            , _ssIndent = 0
-            }
-    combsection =
-        updateSection
-            0
-            (Just 0)
-            cm
-            availablelines
-            0
-    availablelines = getAvailableListLines secondColumnParams cfig