RFC: cmdline completion (#362)

* manual support dot-repeat

* cmdwin and terminal

* cmdline only

* Fix

* fix

* Improve

* Fix test

* Support macro

* disable cmdline for now

* Simplify

* fmt

* consume once

* Ignore = type

* cmdline

* fmt

* Improve

* update

* fmt

* Support incsearch

* fix

* Add api

* Avoid cmdline completion if the native_menu enabled

* fix for macro

* Improve

* fmt

* Insert-mode only by default

* Update

* avoid conflict

* Improve default mapping

* Fix

* fix

* similar to native

* Update

* Fix README.md

* Improve

* Use <afile>

lua/cmp/source.lua

@@ -267,7 +267,7 @@ source.complete = function(self, ctx, callback)
           completion_context = {
             triggerKind = types.lsp.CompletionTriggerKind.TriggerForIncompleteCompletions,
           }
-        elseif self.request_offset ~= offset then
+        elseif not vim.tbl_contains({ self.request_offset, self.offset }, offset) then
           completion_context = {
             triggerKind = types.lsp.CompletionTriggerKind.Invoked,
           }
@@ -303,40 +303,37 @@ source.complete = function(self, ctx, callback)
       option = self:get_config().opts,
       completion_context = completion_context,
     },
-    async.timeout(
-      self.complete_dedup(vim.schedule_wrap(function(response)
-        if #((response or {}).items or response or {}) > 0 then
-          debug.log(self:get_debug_name(), 'retrieve', #(response.items or response))
-          local old_offset = self.offset
-          local old_entries = self.entries
+    self.complete_dedup(vim.schedule_wrap(misc.once(function(response)
+      if #((response or {}).items or response or {}) > 0 then
+        debug.log(self:get_debug_name(), 'retrieve', #(response.items or response))
+        local old_offset = self.offset
+        local old_entries = self.entries
 
-          self.status = source.SourceStatus.COMPLETED
-          self.incomplete = response.isIncomplete or false
-          self.entries = {}
-          for i, item in ipairs(response.items or response) do
-            if (misc.safe(item) or {}).label then
-              local e = entry.new(ctx, self, item)
-              self.entries[i] = e
-              self.offset = math.min(self.offset, e:get_offset())
-            end
+        self.status = source.SourceStatus.COMPLETED
+        self.incomplete = response.isIncomplete or false
+        self.entries = {}
+        for i, item in ipairs(response.items or response) do
+          if (misc.safe(item) or {}).label then
+            local e = entry.new(ctx, self, item)
+            self.entries[i] = e
+            self.offset = math.min(self.offset, e:get_offset())
           end
-          self.revision = self.revision + 1
-          if #self:get_entries(ctx) == 0 then
-            self.offset = old_offset
-            self.entries = old_entries
-            self.revision = self.revision + 1
-          end
-        else
-          debug.log(self:get_debug_name(), 'continue', 'nil')
-          if completion_context.triggerKind == types.lsp.CompletionTriggerKind.TriggerCharacter then
-            self:reset()
-          end
-          self.status = prev_status
         end
-        callback()
-      end)),
-      2000
-    )
+        self.revision = self.revision + 1
+        if #self:get_entries(ctx) == 0 then
+          self.offset = old_offset
+          self.entries = old_entries
+          self.revision = self.revision + 1
+        end
+      else
+        debug.log(self:get_debug_name(), 'continue', 'nil')
+        if completion_context.triggerKind == types.lsp.CompletionTriggerKind.TriggerCharacter then
+          self:reset()
+        end
+        self.status = prev_status
+      end
+      callback()
+    end)))
   )
   return true
 end