Fixed a terrible nvim bug where pressing tab would error and type a 0

.config/nvim/lua/lsp.lua

@@ -99,15 +99,15 @@ end
 -- <<<
 
 M.cmp = function() ---- cmp >>>
-   -- nvim-cmp supports additional completion capabilities
-   local capabilities = vim.lsp.protocol.make_client_capabilities()
-   capabilities = require('cmp_nvim_lsp').update_capabilities(capabilities)
+   -- luasnip setup
+   local luasnip = require 'luasnip'
 
+   -- nvim-cmp setup
    local cmp = require 'cmp'
    cmp.setup {
       snippet = {
          expand = function(args)
-            vim.fn["vsnip#anonymous"](args.body)
+            require('luasnip').lsp_expand(args.body)
          end,
       },
       mapping = {
@@ -144,7 +144,7 @@ M.cmp = function() ---- cmp >>>
          { name = 'path' },
          { name = 'buffer' },
          { name = 'calc' },
-         { name = 'vsnip' },
+         { name = 'luasnip' },
          { name = 'nvim_lsp' },
          { name = 'nvim_lua' },
          { name = 'spell' },
@@ -158,11 +158,14 @@ M.cmp = function() ---- cmp >>>
 
             -- set a name for each source
             vim_item.menu = ({
-               buffer = "[Buffer]",
-               nvim_lsp = "[LSP]",
-               luasnip = "[LuaSnip]",
-               nvim_lua = "[Lua]",
-               latex_symbols = "[Latex]",
+               path           = "[Path]",
+               buffer         = "[Buffer]",
+               calc           = "[Calc]",
+               luasnip        = "[LuaSnip]",
+               nvim_lsp       = "[LSP]",
+               nvim_lua       = "[Lua]",
+               spell          = "[Spell]",
+               treesitter     = "[TS]",
             })[entry.source.name]
             return vim_item
          end,

.config/nvim/lua/plugins.lua

@@ -61,19 +61,25 @@ return require('packer').startup(function()
          require('lsp').cmp()
       end,
       requires = { -- nvim-cmp sources
-         "hrsh7th/vim-vsnip",
-            "rafamadriz/friendly-snippets",
+         -- snippet integration
+            -- "hrsh7th/cmp-vsnip",
+            "saadparwaiz1/cmp_luasnip",
+
          "hrsh7th/cmp-path",
          "hrsh7th/cmp-nvim-lsp",
          "hrsh7th/cmp-buffer",
          "hrsh7th/cmp-nvim-lua",
          "hrsh7th/cmp-latex-symbols",
-         "hrsh7th/cmp-vsnip",
          "hrsh7th/cmp-emoji",
          "hrsh7th/cmp-calc",
          "hrsh7th/cmp-look",
       }
    }
+   use {                                           -- code snippits
+      "L3MON4D3/LuaSnip",
+      -- "hrsh7th/vim-vsnip",
+      -- "rafamadriz/friendly-snippets",
+   }
    use {                                           -- function parameter previews
       "ray-x/lsp_signature.nvim",
       after = "nvim-lspconfig",