feat(neovim): replace nvim-compe with nvim-cmp

home/editors/neovim/cmp.lua

@@ -0,0 +1,59 @@
+local cmp = require("cmp")
+local luasnip = require("luasnip")
+
+-- vim.opt.completeopt="menuone,noinsert" -- TODO
+vim.opt.completeopt="menu,menuone,noselect"
+vim.opt.shortmess:append("c")
+
+local has_words_before = function()
+  local line, col = unpack(vim.api.nvim_win_get_cursor(0))
+  return col ~= 0 and vim.api.nvim_buf_get_lines(0, line - 1, line, true)[1]:sub(col, col):match("%s") == nil
+end
+
+cmp.setup({
+  snippet = {
+    expand = function(args)
+      luasnip.lsp_expand(args.body)
+    end,
+  },
+  mapping = {
+    ["<C-b>"] = cmp.mapping(cmp.mapping.scroll_docs(-4), { "i", "c" }),
+    ["<C-f>"] = cmp.mapping(cmp.mapping.scroll_docs(4), { "i", "c" }),
+    ["<C-Space>"] = cmp.mapping(cmp.mapping.complete(), { "i", "c" }),
+    ["<C-y>"] = cmp.config.disable,
+    ["<C-e>"] = cmp.mapping({
+      i = cmp.mapping.abort(),
+      c = cmp.mapping.close(),
+    }),
+    ["<CR>"] = cmp.mapping.confirm({ select = true }),
+    ["<Tab>"] = cmp.mapping(function(fallback)
+      if cmp.visible() then
+        cmp.select_next_item()
+      elseif luasnip.expand_or_jumpable() then
+        luasnip.expand_or_jump()
+      elseif has_words_before() then
+        cmp.complete()
+      else
+        fallback()
+      end
+    end, { "i", "s" }),
+    ["<S-Tab>"] = cmp.mapping(function(fallback)
+      if cmp.visible() then
+        cmp.select_prev_item()
+      elseif luasnip.jumpable(-1) then
+        luasnip.jump(-1)
+      else
+        fallback()
+      end
+    end, { "i", "s" }),
+  },
+  sources = cmp.config.sources({
+    { name = "nvim_lsp" },
+    { name = "luasnip" },
+  }, {
+    { name = "buffer" },
+  })
+})
+
+local cmp_autopairs = require("nvim-autopairs.completion.cmp")
+cmp.event:on("confirm_done", cmp_autopairs.on_confirm_done({  map_char = { tex = "" } }))

home/editors/neovim/default.nix

@@ -33,8 +33,12 @@ in {
       vim-test
       nvim-autopairs
       camelcasemotion
-      nvim-compe
-      vim-vsnip
+      luasnip
+
+      nvim-cmp
+      cmp-buffer
+      cmp-nvim-lsp
+      cmp_luasnip
 
       (nvim-treesitter.withPlugins (_: pkgs.tree-sitter.allGrammars))
       nvim-treesitter-context
@@ -63,6 +67,7 @@ in {
         ./which-key.lua
         ./gitsigns.lua
         ./test.lua
+        ./cmp.lua
         ./lsp/extensions.lua
         ./lsp/lsp.lua
         ./lsp/mappings.lua

home/editors/neovim/lsp/lsp.lua

@@ -1,19 +1,3 @@
--- autocomplete config
-vim.opt.completeopt="menuone,noinsert"
-vim.opt.shortmess:append("c")
-
-require'compe'.setup {
-  enabled = true,
-  preselect = "always",
-  allow_prefix_unmatch = true,
-  source = {
-    path = true,
-    calc = true,
-    nvim_lsp = true,
-    vsnip = true,
-  },
-}
-
 local pid = vim.fn.getpid()
 
 -- lightbulb
@@ -34,10 +18,9 @@ end
 
 require('lspfuzzy').setup {}
 
--- enable lsp snippets for nvim-compe
-
 local config = require'lspconfig'
-local capabilities = vim.lsp.protocol.make_client_capabilities()
+local capabilities_ = vim.lsp.protocol.make_client_capabilities()
+local capabilities = require("cmp_nvim_lsp").update_capabilities(capabilities_)
 capabilities.textDocument.completion.completionItem.snippetSupport = true
 local servers = {
   "bashls",
@@ -238,27 +221,6 @@ config.diagnosticls.setup {
   },
 }
 
--- nvim-autoclose & nvim-compe compatibility
-local map = vim.api.nvim_set_keymap
-local npairs = require('nvim-autopairs')
-
-npairs.setup({
+require("nvim-autopairs").setup({
   check_ts = true,
 })
-
-_G.MUtils= {}
-
-vim.g.completion_confirm_key = ""
-MUtils.completion_confirm=function()
-  if vim.fn.pumvisible() ~= 0  then
-    if vim.fn.complete_info()["selected"] ~= -1 then
-      return vim.fn["compe#confirm"](npairs.esc("<cr>"))
-    else
-      return npairs.esc("<cr>")
-    end
-  else
-    return npairs.autopairs_cr()
-  end
-end
-
-map('i' , '<CR>','v:lua.MUtils.completion_confirm()', {expr = true , noremap = true})

home/editors/neovim/lsp/mappings.lua

@@ -1,15 +1,5 @@
 local map = vim.api.nvim_set_keymap
 
-map("i", "<C-Space>", "compe#complete()", { noremap = true, expr = true, silent = true })
-map("i", "<CR>",      "compe#confirm('<CR>')", { noremap = true, expr = true, silent = true })
-map("i", "<C-e>",     "compe#close('<C-e>')", { noremap = true, expr = true, silent = true })
-map("i", "<C-f>",     "compe#scroll({ 'delta': +4 })", { noremap = true, expr = true, silent = true })
-map("i", "<C-d>",     "compe#scroll({ 'delta': -4 })", { noremap = true, expr = true, silent = true })
-
--- Use <Tab> and <S-Tab> to navigate through popup menu
-map("i", "<Tab>",   "pumvisible() ? '<C-n>' : '<Tab>'", { noremap = true, expr = true })
-map("i", "<S-Tab>", "pumvisible() ? '<C-p>' : '<S-Tab>'", { noremap = true, expr = true })
-
 -- maps
 map("n", "gd",         "<cmd>lua vim.lsp.buf.definition()<CR>", { noremap = true, silent = true })
 map("n", "gp",         "<cmd>lua peek_definition()<CR>", { noremap = true, silent = true })