less obtrusive completion bindings

Signed-off-by: Alex Suraci <[email protected]>

init.lua

@@ -712,6 +712,14 @@ require('lazy').setup({
       -- See `:help cmp`
       local cmp = require 'cmp'
 
+      local has_words_before = function()
+        if vim.bo.buftype == 'prompt' then
+          return false
+        end
+        local line, col = unpack(vim.api.nvim_win_get_cursor(0))
+        return col ~= 0 and vim.api.nvim_buf_get_text(0, line - 1, 0, line - 1, col, {})[1]:match '^%s*$' == nil
+      end
+
       cmp.setup {
         snippet = {
           expand = function(args)
@@ -743,11 +751,17 @@ require('lazy').setup({
 
           -- If you prefer more traditional completion keymaps,
           -- you can uncomment the following lines
-          ['<Tab>'] = cmp.mapping.select_next_item(),
+          ['<Tab>'] = vim.schedule_wrap(function(fallback)
+            if cmp.visible() and has_words_before() then
+              cmp.select_next_item { behavior = cmp.SelectBehavior.Select }
+            else
+              fallback()
+            end
+          end),
           ['<S-Tab>'] = cmp.mapping.select_prev_item(),
 
           -- A less invasive <CR>
-          ['<C-CR>'] = cmp.mapping.confirm { select = true },
+          ['<CR>'] = cmp.mapping.confirm { select = false },
 
           -- Manually trigger a completion from nvim-cmp.
           --  Generally you don't need this, because nvim-cmp will display
@@ -782,6 +796,24 @@ require('lazy').setup({
           { name = 'path', group_index = 2 },
           { name = 'buffer', group_index = 3 },
         },
+        sorting = {
+          priority_weight = 2,
+          comparators = {
+            require('copilot_cmp.comparators').prioritize,
+
+            -- Below is the default comparitor list and order for nvim-cmp
+            cmp.config.compare.offset,
+            -- cmp.config.compare.scopes, --this is commented in nvim-cmp too
+            cmp.config.compare.exact,
+            cmp.config.compare.score,
+            cmp.config.compare.recently_used,
+            cmp.config.compare.locality,
+            cmp.config.compare.kind,
+            cmp.config.compare.sort_text,
+            cmp.config.compare.length,
+            cmp.config.compare.order,
+          },
+        },
       }
     end,
   },