feat: add autocompletion Neovim configuration

vim/lazy-lock.json

@@ -1,6 +1,10 @@
 {
+  "LuaSnip": { "branch": "master", "commit": "03c8e67eb7293c404845b3982db895d59c0d1538" },
   "bullets.vim": { "branch": "master", "commit": "83fa7298085be647e6b378ef2c8ca491ca032154" },
+  "cmp-buffer": { "branch": "main", "commit": "3022dbc9166796b644a841a02de8dd1cc1d311fa" },
   "cmp-nvim-lsp": { "branch": "main", "commit": "39e2eda76828d88b773cc27a3f61d2ad782c922d" },
+  "cmp-path": { "branch": "main", "commit": "91ff86cd9c29299a64f968ebb45846c485725f23" },
+  "cmp_luasnip": { "branch": "master", "commit": "98d9cb5c2c38532bd9bdb481067b20fea8f32e90" },
   "conform.nvim": { "branch": "master", "commit": "6239d9986f51ca93ded99ecdb1af0e287eabb651" },
   "csv.vim": { "branch": "master", "commit": "bddfcbadd788ab11eb3dbba4550a38a412fe3705" },
   "dressing.nvim": { "branch": "master", "commit": "43b8f74e0b1e3f41e51f640f8efa3bcd401cea0d" },
@@ -14,6 +18,7 @@
   "mason-tool-installer.nvim": { "branch": "main", "commit": "c5e07b8ff54187716334d585db34282e46fa2932" },
   "mason.nvim": { "branch": "main", "commit": "c43eeb5614a09dc17c03a7fb49de2e05de203924" },
   "mini.icons": { "branch": "main", "commit": "a2742459f0ee32806c2438ca06b4d8b331f3f4d4" },
+  "nvim-cmp": { "branch": "main", "commit": "983453e32cb35533a119725883c04436d16c0120" },
   "nvim-highlight-colors": { "branch": "main", "commit": "e967e2ba13fd4ca731b41d0e5cc1ac2edcd6e25e" },
   "nvim-lspconfig": { "branch": "master", "commit": "056f569f71e4b726323b799b9cfacc53653bceb3" },
   "nvim-solarized-lua": { "branch": "master", "commit": "d69a263c97cbc765ca442d682b3283aefd61d4ac" },

vim/lua/plugins/completion.lua

@@ -0,0 +1,76 @@
+return {
+  "hrsh7th/nvim-cmp",
+  event = "VimEnter",
+  dependencies = {
+    {
+      "L3MON4D3/LuaSnip",
+      build = (function()
+        return "make install_jsregexp"
+      end)(),
+    },
+    "saadparwaiz1/cmp_luasnip",
+    "hrsh7th/cmp-nvim-lsp",
+    "hrsh7th/cmp-buffer",
+    "hrsh7th/cmp-path",
+  },
+  config = function()
+    local cmp = require("cmp")
+    local luasnip = require("luasnip")
+    luasnip.config.setup({})
+
+    cmp.setup({
+      snippet = {
+        expand = function(args)
+          vim.snippet.expand(args.body)
+        end,
+      },
+      completion = {
+        -- Only manual completions, please
+        autocomplete = false,
+        completeopt = "menu,menuone,noinsert",
+      },
+
+      mapping = cmp.mapping.preset.insert({
+        -- Scroll the documentation window [b]ack / [f]orward
+        ["<C-b>"] = cmp.mapping.scroll_docs(-4),
+        ["<C-f>"] = cmp.mapping.scroll_docs(4),
+
+        -- Trigger a completion from nvim-cmp.
+        ["<C-Space>"] = cmp.mapping.complete({}),
+
+        -- Think of <c-l> as moving to the right of your snippet expansion.
+        --  So if you have a snippet that's like:
+        --  function $name($args)
+        --    $body
+        --  end
+        --
+        -- <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" }),
+
+        -- For more advanced Luasnip keymaps (e.g. selecting choice nodes,
+        -- expansion) see:
+        -- https://github.com/L3MON4D3/LuaSnip?tab=readme-ov-file#keymaps
+      }),
+      sources = {
+        {
+          name = "lazydev",
+          -- set group index to 0 to skip loading LuaLS completions as lazydev recommends it
+          group_index = 0,
+        },
+        { name = "nvim_lsp" },
+        { name = "buffer" },
+        { name = "path" },
+      },
+    })
+  end,
+}