Switch from deprecated compe to successor cmp

init.vim

@@ -55,8 +55,6 @@ set hidden
 " set completeopt=menu,noinsert,preview
 set completeopt=menuone,noinsert,noselect
 set shortmess+=c
-imap <tab> <Plug>(completion_smart_tab)
-imap <s-tab> <Plug>(completion_smart_s_tab)
 inoremap <expr> <CR>    pumvisible() ? "\<C-y>" : "\<C-g>u\<CR>"
 
 set mouse=
@@ -180,5 +178,6 @@ let g:localvimrc_sandbox=0
 lua require("my-lsp")
 lua require("lsputils")
 "lua require("conf.compe")
+lua require("conf.cmp")
 lua require("conf.trouble")
 " vi:foldmethod=marker sw=2

lua/conf/compe.lua

@@ -31,3 +31,42 @@ require'compe'.setup {
     luasnip = true;
   };
 }
+
+local t = function(str)
+  return vim.api.nvim_replace_termcodes(str, true, true, true)
+end
+
+local check_back_space = function()
+    local col = vim.fn.col('.') - 1
+    return col == 0 or vim.fn.getline('.'):sub(col, col):match('%s') ~= nil
+end
+
+-- Use (s-)tab to:
+--- move to prev/next item in completion menuone
+--- jump to prev/next snippet's placeholder
+_G.tab_complete = function()
+  if vim.fn.pumvisible() == 1 then
+    return t "<C-n>"
+  elseif vim.fn['vsnip#available'](1) == 1 then
+    return t "<Plug>(vsnip-expand-or-jump)"
+  elseif check_back_space() then
+    return t "<Tab>"
+  else
+    return vim.fn['compe#complete']()
+  end
+end
+_G.s_tab_complete = function()
+  if vim.fn.pumvisible() == 1 then
+    return t "<C-p>"
+  elseif vim.fn['vsnip#jumpable'](-1) == 1 then
+    return t "<Plug>(vsnip-jump-prev)"
+  else
+    -- If <S-Tab> is not working in your terminal, change it to <C-h>
+    return t "<S-Tab>"
+  end
+end
+
+vim.api.nvim_set_keymap("i", "<Tab>", "v:lua.tab_complete()", {expr = true})
+vim.api.nvim_set_keymap("s", "<Tab>", "v:lua.tab_complete()", {expr = true})
+vim.api.nvim_set_keymap("i", "<S-Tab>", "v:lua.s_tab_complete()", {expr = true})
+vim.api.nvim_set_keymap("s", "<S-Tab>", "v:lua.s_tab_complete()", {expr = true})

lua/my-lsp.lua

@@ -39,7 +39,7 @@ local on_attach = function(client, bufnr)
 	buf_set_keymap('n', ']d', '<cmd>lua vim.lsp.diagnostic.goto_next()<CR>', opts)
 	buf_set_keymap('n', '<M-q>', '<cmd>lua vim.lsp.diagnostic.set_loclist()<CR>', opts)
 	buf_set_keymap("n", "<Leader>f", "<cmd>lua vim.lsp.buf.formatting()<CR>", opts)
-	require'completion'.on_attach(client, bufnr)
+	--require'completion'.on_attach(client, bufnr)
 end
 
 

packages.vim

@@ -4,8 +4,8 @@ call plug#begin(expand('<sfile>:p:h') . '/plugged')
 Plug 'pbrisbin/vim-mkdir'
 Plug 'embear/vim-localvimrc'
 
-"Plug 'crater2150/vim-theme-chroma'
-Plug '~/sources/chroma-colors/vim'
+Plug 'crater2150/vim-theme-chroma'
+"Plug '~/sources/chroma-colors/vim'
 Plug 'fladson/vim-kitty'
 
 " tim pope stuff
@@ -32,7 +32,13 @@ Plug 'neovim/nvim-lspconfig'
 Plug 'kabouzeid/nvim-lspinstall'
 Plug 'scalameta/nvim-metals'
 "Plug 'hrsh7th/nvim-compe'
-Plug 'nvim-lua/completion-nvim'
+Plug 'hrsh7th/nvim-cmp'
+Plug 'hrsh7th/cmp-buffer'
+Plug 'hrsh7th/cmp-path'
+Plug 'hrsh7th/cmp-nvim-lsp'
+Plug 'hrsh7th/vim-vsnip'
+Plug 'hrsh7th/vim-vsnip-integ'
+"Plug 'nvim-lua/completion-nvim'
 Plug 'nvim-treesitter/nvim-treesitter', {'branch': '0.5-compat', 'do': ':TSUpdate'}
 Plug 'nvim-lua/lsp-status.nvim'
 Plug 'RishabhRD/popfix'