move to compe

.vimrc

@@ -46,11 +46,8 @@ set ruler
 
 " I hate split above, so make it split below. Likewise, to the right.
 set splitbelow
-" For autocomplete, show a menu, show it when there's only one option, 
-" and only complete the longest common bit instead of the whole thing (like
-" bash).
-"set completeopt=menu,menuone,longest
-set completeopt=noinsert,menuone,noselect,longest
+" For autocomplete, follow requirements for nvim-compe
+set completeopt=menuone,noselect
 set signcolumn=yes
 set shortmess+=c
 
@@ -149,7 +146,7 @@ Plug 'tpope/vim-abolish'
 Plug 'sheerun/vim-polyglot'
 Plug 'Shougo/denite.nvim'
 Plug 'plytophogy/vim-virtualenv'
-Plug 'ervandew/supertab'
+"Plug 'ervandew/supertab'
 "Plug 'ncm2/ncm2'
 "Plug 'roxma/nvim-yarp'
 
@@ -200,7 +197,8 @@ Plug 'zchee/vim-goasm'
 "Plug 'neoclide/coc.nvim', {'branch': 'release'}
 Plug 'neovim/nvim-lspconfig'
 Plug 'nvim-lua/lsp_extensions.nvim'
-Plug 'nvim-lua/completion-nvim'
+Plug 'hrsh7th/nvim-compe'
+"Plug 'nvim-lua/completion-nvim'
 Plug 'onsails/lspkind-nvim'
 
 " Plugins that do specific things
@@ -273,7 +271,6 @@ local nvim_lsp = require'lspconfig'
 
 -- function to attach completion when setting up lsp
 local on_attach = function(client)
-    require'completion'.on_attach(client)
 end
 
 -- Enable rust_analyzer
@@ -289,6 +286,65 @@ vim.lsp.handlers["textDocument/publishDiagnostics"] = vim.lsp.with(
   }
 )
 
+-- Compe setup
+require'compe'.setup {
+  enabled = true;
+  autocomplete = true;
+  debug = false;
+  min_length = 1;
+  preselect = 'enable';
+  throttle_time = 80;
+  source_timeout = 200;
+  incomplete_delay = 400;
+  max_abbr_width = 100;
+  max_kind_width = 100;
+  max_menu_width = 100;
+  documentation = true;
+
+  source = {
+    path = true;
+    nvim_lsp = 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
+    if col == 0 or vim.fn.getline('.'):sub(col, col):match('%s') then
+        return true
+    else
+        return false
+    end
+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 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>"
+  else
+    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})
+
 require('lspkind').init({
     -- disables text annotations
     with_text = false,
@@ -322,16 +378,8 @@ require('lspkind').init({
       Struct = 'struct',
     },
 })
-
 EOF
 
-" Use <Tab> and <S-Tab> to navigate through popup menu
-inoremap <expr> <Tab>   pumvisible() ? "\<C-n>" : "\<Tab>"
-inoremap <expr> <S-Tab> pumvisible() ? "\<C-p>" : "\<S-Tab>"
-
-" use <Tab> as trigger keys
-imap <Tab> <Plug>(completion_smart_tab)
-imap <S-Tab> <Plug>(completion_smart_s_tab)
 
 " Code navigation shortcuts
 nnoremap <silent> gd <cmd>lua vim.lsp.buf.definition()<CR>
@@ -360,6 +408,11 @@ let g:completion_matching_strategy_list = ['exact', 'substring', 'fuzzy']
 let g:completion_matching_smart_case = 1
 let g:completion_sorting = 'length'
 
+inoremap <silent><expr> <CR>      compe#confirm('<CR>')
+inoremap <silent><expr> <C-e>     compe#close('<C-e>')
+inoremap <silent><expr> <C-f>     compe#scroll({ 'delta': +4 })
+inoremap <silent><expr> <C-d>     compe#scroll({ 'delta': -4 })
+
 
 " **** End LSP