Get snippets running

lua/cmp_plug.lua

@@ -1,4 +1,5 @@
 local cmp = require('cmp')
+local luasnip = require("luasnip")
 
 local t = function(str)
     return vim.api.nvim_replace_termcodes(str, true, true, true)
@@ -45,26 +46,28 @@ cmp.setup {
         }),
         ["<Tab>"] = cmp.mapping(function(fallback)
             if vim.fn.pumvisible() == 1 then
-                if vim.fn["UltiSnips#CanExpandSnippet"]() == 1 or
-                    vim.fn["UltiSnips#CanJumpForwards"]() == 1 then
-                    return vim.fn.feedkeys(t(
-                                               "<C-R>=UltiSnips#ExpandSnippetOrJump()<CR>"))
-                end
-
-                vim.fn.feedkeys(t("<C-n>"), "n")
-            elseif check_back_space() then
-                vim.fn.feedkeys(t("<tab>"), "n")
+              vim.api.nvim_feedkeys(t("<C-n>"), "n", true)
+            elseif luasnip.expand_or_jumpable() then
+              vim.api.nvim_feedkeys(t("<Plug>luasnip-expand-or-jump"), "", true)
             else
-                fallback()
+              fallback()
             end
-        end, {"i", "s"}),
-        ["<S-Tab>"] = cmp.mapping(function(fallback)
+          end, {
+            "i",
+            "s",
+          }),
+          ["<S-Tab>"] = cmp.mapping(function(fallback)
             if vim.fn.pumvisible() == 1 then
-                vim.fn.feedkeys(t("<C-p>"), "n")
+              vim.api.nvim_feedkeys(t("<C-p>"), "n", true)
+            elseif luasnip.jumpable(-1) then
+              vim.api.nvim_feedkeys(t("<Plug>luasnip-jump-prev"), "", true)
             else
-                fallback()
+              fallback()
             end
-        end, {"i", "s"})
+          end, {
+            "i",
+            "s",
+          }),
     },
     snippet = {
       expand = function(args)