Use floating window for completion menus (#224)

* WIP

* WIP

* Fix #226

* Insert text

* Emulate vim native

* テキトウ

* Tekito

* Move scrollbar impl

* aaa

* Ignore unexpected event

* fix

* fix scroll

* Refactor (conflict...)

* Fix bug

* Positive integer

* Refactor a bit

* Fix for pumheight=0

* fx

* Improve matching highlight

* Improve colorscheme handling

* fmt

* Add cmp.visible

* Fix pum pos

* ABBR_MARGIN

* Fix cel calculation

* up

* refactor

* fix

* a

* a

* compat

* Remove current completion state

* Fix ghost text

* Add feature toggle

* highlight customization

* Update

* Add breaking change announcement

* Add README.md

* Remove unused function

* extmark ephemeral ghost text

* Support native comp

* Fix docs  pos

* a

* Remove if native menu visible

* theme async

* Improvement idea: option to disables insert on select item (#240)

* use ghost text instead of insertion on prev/next item

* add disables_insert_on_selection option

* move disable_insert_on_select option as argumet on

* update README

* use an enum behavior to disable insert on select

* Adopt contribution

* Preselect

* Improve

* Change configuration option

* a

* Improve

* Improve

* Implement proper <C-e> behavior to native/custom

* Support <C-c> maybe

* Improve docs view

* Improve

* Avoid syntax leak

* TODO: refactor

* Fix

* Revert win pos

* fmt

* ghost text remaining

* Don't use italic by default

* bottom

* dedup by label

* Ignore events

* up

* Hacky native view partial support

* up

* perf

* improve

* more cache

* fmt

* Fix format option

* fmt

* recheck

* Fix

* Improve

* Improve

* compat

* implement redraw

* improve

* up

* fmt/lint

* immediate ghost text

* source timeout

* up

* Support multibyte

* disable highlight

* up

* improve

* fmt

* fmt

* fix

* fix

* up

* up

* Use screenpos

* Add undojoin check

* Fix height

* matcher bug

* Fix dot-repeat

* Remove undojoin

* macro

* Support dot-repeat

* MacroSafe

* Default item count is 200

* fmt

Co-authored-by: Eric Puentes <eric.puentes@mercadolibre.com.co>

lua/cmp/utils/cache.lua

@@ -14,7 +14,7 @@ end
 cache.get = function(self, key)
   key = self:key(key)
   if self.entries[key] ~= nil then
-    return unpack(self.entries[key])
+    return self.entries[key]
   end
   return nil
 end
@@ -22,9 +22,9 @@ end
 ---Set cache value explicitly
 ---@param key string
 ---@vararg any
-cache.set = function(self, key, ...)
+cache.set = function(self, key, value)
   key = self:key(key)
-  self.entries[key] = { ... }
+  self.entries[key] = value
 end
 
 ---Ensure value by callback
@@ -33,9 +33,11 @@ end
 cache.ensure = function(self, key, callback)
   local value = self:get(key)
   if value == nil then
-    self:set(key, callback())
+    local v = callback()
+    self:set(key, v)
+    return v
   end
-  return self:get(key)
+  return value
 end
 
 ---Clear all cache entries