add treesitter, which-key, nvim-cmp

lua/dkelly/plugins/nvim-cmp.lua

@@ -0,0 +1,84 @@
+return {
+  'hrsh7th/nvim-cmp',
+  dependencies = {
+    -- Core completion sources
+    'hrsh7th/cmp-nvim-lsp',
+    -- 'hrsh7th/cmp-treesitter',             -- Uncomment if you have a cmp-treesitter source
+    -- Cmdline support
+    'hrsh7th/cmp-cmdline',
+    -- Icons
+    'onsails/lspkind-nvim',
+
+    -- Extras you can enable later:
+    -- 'windwp/nvim-autopairs',              -- autopairs integration
+    -- 'lukas-reineke/cmp-under-comparator', -- fuzzy sorting
+  },
+  config = function()
+    local cmp = require('cmp')
+    local lspkind = require('lspkind')
+
+    cmp.setup({
+      formatting = {
+        format = lspkind.cmp_format({
+          mode = "symbol_text", -- or "symbol" for just icons, "text" for just text
+          maxwidth = 50,
+        }),
+      },
+
+      snippet = {
+        expand = function(args)
+          -- no-op, snippet engine not installed
+        end,
+      },
+
+      mapping = {
+        ['<C-n>'] = cmp.mapping.select_next_item({ behavior = cmp.SelectBehavior.Insert }),
+        ['<C-p>'] = cmp.mapping.select_prev_item({ behavior = cmp.SelectBehavior.Insert }),
+        ['<C-Space>'] = cmp.mapping.complete(),
+        ['<CR>'] = cmp.mapping.confirm({ select = true }),
+        ['<C-e>'] = cmp.mapping.abort(),
+      },
+
+      sources = cmp.config.sources({
+        { name = 'nvim_lsp' },
+        -- { name = 'treesitter' }, -- Uncomment if you actually have cmp-treesitter
+      }),
+
+      -- Extras you can enable later:
+      -- window = {
+      --   completion = cmp.config.window.bordered(),
+      --   documentation = cmp.config.window.bordered(),
+      -- },
+
+      -- experimental = {
+      --   ghost_text = true,
+      -- },
+    })
+
+    -- Cmdline completion for : (commands & paths)
+    cmp.setup.cmdline(':', {
+      mapping = cmp.mapping.preset.cmdline(),
+      sources = cmp.config.sources({
+        { name = 'path' },
+        { name = 'cmdline' },
+      }),
+    })
+
+    -- Search completion for / (buffer)
+    cmp.setup.cmdline('/', {
+      mapping = cmp.mapping.preset.cmdline(),
+      sources = {
+        { name = 'buffer' },
+      },
+    })
+
+    -- Autopairs integration (uncomment when you install nvim-autopairs)
+    -- require('nvim-autopairs').setup{}
+    -- local cmp_autopairs = require('nvim-autopairs.completion.cmp')
+    -- cmp.event:on('confirm_done', cmp_autopairs.on_confirm_done())
+
+    -- Fuzzy sorting (uncomment when you install cmp-under-comparator)
+    -- table.insert(cmp.config.sorting.comparators, require('cmp-under-comparator').under)
+  end,
+}
+