nvim: borrow from kickstart, move code from after/plugin to lua/plugins

nvim/.config/nvim/lua/plugins/autocompletion.lua

@@ -0,0 +1,71 @@
+return {
+  'hrsh7th/nvim-cmp',
+  event = 'InsertEnter',
+  dependencies = {
+    -- Snippet Engine & its associated nvim-cmp source
+    {
+      'L3MON4D3/LuaSnip',
+      build = (function()
+        if vim.fn.has 'win32' == 1 or vim.fn.executable 'make' == 0 then
+          return
+        end
+        return 'make install_jsregexp'
+      end)(),
+    },
+    'saadparwaiz1/cmp_luasnip',
+
+    -- Adds LSP completion capabilities
+    'hrsh7th/cmp-nvim-lsp',
+    'hrsh7th/cmp-path',
+
+    -- Adds a number of user-friendly snippets
+    'rafamadriz/friendly-snippets',
+  },
+  config = function()
+    -- See `:help cmp`
+    local cmp = require 'cmp'
+    local luasnip = require 'luasnip'
+    require('luasnip.loaders.from_vscode').lazy_load()
+    require('luasnip.loaders.from_lua').lazy_load({ paths = '~/.config/nvim/snippets' })
+    luasnip.config.setup {}
+
+    cmp.setup {
+      snippet = {
+        expand = function(args)
+          luasnip.lsp_expand(args.body)
+        end,
+      },
+      -- completion = { autocomplete = false },
+      completion = { completeopt = 'menu,menuone,noinsert' },
+
+      -- See `:help ins-completion`
+      mapping = cmp.mapping.preset.insert {
+        -- ['<C-l>'] = cmp.mapping.confirm({ select = true }),
+        ['<C-n>'] = cmp.mapping.select_next_item(),
+        ['<C-p>'] = cmp.mapping.select_prev_item(),
+        ['<C-d>'] = cmp.mapping.scroll_docs(-4),
+        ['<C-f>'] = cmp.mapping.scroll_docs(4),
+        ['<C-y>'] = cmp.mapping.confirm { select = true },
+        ['<C-Space>'] = cmp.mapping.complete {},
+
+        -- <c-l> will move you to the right of each of the expansion locations.
+        -- <c-h> is similar, except moving you backwards.
+        ['<C-l>'] = cmp.mapping(function()
+          if luasnip.expand_or_locally_jumpable() then
+            luasnip.expand_or_jump()
+          end
+        end, { 'i', 's' }),
+        ['<C-h>'] = cmp.mapping(function()
+          if luasnip.locally_jumpable(-1) then
+            luasnip.jump(-1)
+          end
+        end, { 'i', 's' }),
+      },
+      sources = {
+        { name = 'nvim_lsp' },
+        { name = 'luasnip' },
+        { name = 'path' },
+      },
+    }
+  end,
+}