ported the lua, port is complete, I think.

lua/plugins/completion.lua

@@ -0,0 +1,156 @@
+local load_w_after = function(name)
+  vim.cmd.packadd(name)
+  vim.cmd.packadd(name .. '/after')
+end
+
+return {
+  {
+    "cmp-cmdline",
+    for_cat = "lazy",
+    on_plugin = { "blink.cmp" },
+    load = load_w_after,
+  },
+  {
+    "blink.compat",
+    for_cat = "lazy",
+    dep_of = { "cmp-cmdline" },
+  },
+  {
+    "luasnip",
+    for_cat = "lazy",
+    dep_of = { "blink.cmp" },
+    after = function(_)
+      vim.cmd.packadd("friendly-snippets")
+      local luasnip = require 'luasnip'
+      require('luasnip.loaders.from_vscode').lazy_load()
+      luasnip.config.setup {}
+
+      local ls = require('luasnip')
+
+      vim.keymap.set({ "i", "s" }, "<M-n>", function()
+        if ls.choice_active() then
+          ls.change_choice(1)
+        end
+      end)
+    end,
+  },
+  {
+    "colorful-menu.nvim",
+    for_cat = "lazy",
+    on_plugin = { "blink.cmp" },
+  },
+  {
+    "blink-emoji.nvim",
+    for_cat = "lazy",
+    on_plugin = { "blink.cmp" },
+  },
+  {
+    "blink.cmp",
+    for_cat = "lazy",
+    event = "DeferredUIEnter",
+    after = function(_)
+      require("blink.cmp").setup({
+        -- 'default' (recommended) for mappings similar to built-in completions (C-y to accept)
+        -- See :h blink-cmp-config-keymap for configuring keymaps
+        keymap = { preset = "enter", },
+        cmdline = {
+          enabled = true,
+          completion = {
+            menu = {
+              auto_show = true,
+            },
+          },
+          sources = function()
+            local type = vim.fn.getcmdtype()
+            -- Search forward and backward
+            if type == '/' or type == '?' then return { 'buffer' } end
+            -- Commands
+            if type == ':' or type == '@' then return { 'cmdline', 'cmp_cmdline' } end
+            return {}
+          end,
+        },
+        fuzzy = {
+          sorts = {
+            'exact',
+            -- defaults
+            'score',
+            'sort_text',
+          },
+        },
+        signature = {
+          enabled = true,
+          window = {
+            show_documentation = true,
+          },
+        },
+        completion = {
+          list = {
+            selection = {
+              preselect = false,
+              auto_insert = false,
+            },
+          },
+          menu = {
+            draw = {
+              treesitter = { 'lsp' },
+              components = {
+                label = {
+                  text = function(ctx)
+                    return require("colorful-menu").blink_components_text(ctx)
+                  end,
+                  highlight = function(ctx)
+                    return require("colorful-menu").blink_components_highlight(ctx)
+                  end,
+                },
+              },
+            },
+          },
+          documentation = {
+            auto_show = true,
+          },
+        },
+        snippets = {
+          preset = 'luasnip',
+          active = function(filter)
+            local snippet = require "luasnip"
+            local blink = require "blink.cmp"
+            if snippet.in_snippet() and not blink.is_visible() then
+              return true
+            else
+              if not snippet.in_snippet() and vim.fn.mode() == "n" then snippet.unlink_current() end
+              return false
+            end
+          end,
+        },
+        sources = {
+          default = { 'lsp', 'path', 'snippets', 'buffer', 'omni', 'emoji', },
+          providers = {
+            path = {
+              score_offset = 50,
+            },
+            lsp = {
+              score_offset = 40,
+            },
+            snippets = {
+              score_offset = 40,
+            },
+            emoji = {
+              module = "blink-emoji",
+              name = "Emoji",
+              score_offset = 15,
+              opts = { insert = true },
+            },
+            cmp_cmdline = {
+              name = 'cmp_cmdline',
+              module = 'blink.compat.source',
+              score_offset = -100,
+              opts = {
+                cmp_name = 'cmdline',
+              },
+            },
+          },
+        },
+      })
+    end,
+  },
+}