Opencode.nvim completions menu can't be accessed with nvim-cmp

[sei-dwtompkins]

Similar to the issue reported by user disrupted in 287, I'm having an issue with the recent LSP completions actually activating. When I hit tab in the input_window, it will insert a literal tab character instead of moving through the completions menu.

[sudo-tee]

@sei-dwtompkins What is your cmp config?

I just tried it and it worked fine for me.

[sei-dwtompkins]

It had been working properly for me before that PR got merged in:

  -- Autocomplete
  {
    "hrsh7th/nvim-cmp",
    event = "InsertEnter",
    -- Sources for nvim-cmp
    dependencies = {
      "nvim-tree/nvim-web-devicons",
      "hrsh7th/cmp-nvim-lsp",
      "hrsh7th/cmp-buffer",
      "hrsh7th/cmp-path",
      "hrsh7th/cmp-nvim-lua",
      "hrsh7th/cmp-cmdline",
      "saadparwaiz1/cmp_luasnip",
      "l00sed/cmp-tidal",
    },
    config = function()
      require("plugins.cmp")
    end,
  },

plugins/cmp.lua

local fn = vim.fn
local cmd = vim.cmd

local luasnip = require('luasnip')
local cmp = require('cmp')

local function get_snippets_rtp()
  return vim.tbl_map(function(itm)
    return fn.fnamemodify(itm, ":h")
  end, vim.api.nvim_get_runtime_file(
      "package.json", true
  ))
end

local opts = {
  paths = {
    fn.stdpath('config')..'/snips/',
    get_snippets_rtp()[1],
  },
}

require('luasnip.loaders.from_vscode').lazy_load(opts)

local border = {
  { "╭", "FloatBorder" },
  { "─", "FloatBorder" },
  { "╮", "FloatBorder" },
  { "│", "FloatBorder" },
  { "╯", "FloatBorder" },
  { "─", "FloatBorder" },
  { "╰", "FloatBorder" },
  { "│", "FloatBorder" },
}

local hl = "Normal:Normal,FloatBorder:FloatBorder,CursorLine:CursorLine,Search:Search"

local lspkind = require('lspkind')

cmp.setup({
  preselect = cmp.PreselectMode.None,
  snippet = {
    expand = function(args)
      luasnip.lsp_expand(args.body)
    end,
  },

  -- Styles
  window = {
    completion = {
      side_padding = 1,
      col_offset = -1,
      border = border,
      winhighlight = hl,
    },
    documentation = {
      side_padding = 1,
      border = border,
      winhighlight = hl,
    }
  },

  formatting = {
    format = lspkind.cmp_format({
      mode = 'symbol',
      preset = 'default',
      menu = ({
        nvim_lsp = "[LSP]",
        luasnip = "[LuaSnip]",
        nvim_lua = "[Lua]",
        path = "[Path]",
        buffer = "[Buffer]",
        spell = "[Spell]",
      }),
      symbol_map = {
        ... symbols mapping here ...
      },
      ellipsis_char = '...',
      before = function(entry, vim_item)
        return vim_item
      end
    })
  },

  -- Mappings
  mapping = {
    -- open/close autocomplete
    ['<C-Space>'] = function()
      if cmp.visible() then
        cmp.close()
      else
        cmp.complete()
      end
    end,

    ['<C-c>'] = cmp.mapping.close(),

    -- select completion
    ['<CR>'] = cmp.mapping.confirm({
      behavior = cmp.ConfirmBehavior.Replace,
      select = false,
    }),

    ['<Tab>'] = function(fallback)
      if cmp.visible() then
        cmp.select_next_item()
      elseif luasnip.expand_or_jumpable() then
        luasnip.expand_or_jump()
      else
        fallback()
      end
    end,

    ['<S-Tab>'] = function(fallback)
      if cmp.visible() then
        cmp.select_prev_item()
      elseif luasnip.jumpable(-1) then
        luasnip.jump(-1)
      else
        fallback()
      end
    end,

    -- Scroll documentation
    ['<C-d>'] = cmp.mapping.scroll_docs(-4),
    ['<C-f>'] = cmp.mapping.scroll_docs(4),
  },

  -- Complete options from the LSP servers and the snippet engine
  sources = {
    { name = 'nvim_lsp' },
    { name = 'luasnip'  },
    { name = 'tidal' },
    { name = 'tidal_samples' },
    { name = 'nvim_lua' },
    { name = 'path'     },
    { name = 'buffer'   },
    { name = 'spell'    },
  },

  performance = {
    fetching_timeout = 2000,
  },
})

[sudo-tee]

Thanks for sharing.

If you remove the Tab from the opencode config does it still interfere?

[sei-dwtompkins]

It still seems to want to put in the literal tab instead of getting into the completions menu.

[sei-dwtompkins]

I managed to get it working, it was a very strange issue... I had the following configured in opencode's keymaps:

-['<C-i>'] = { 'focus_input', mode = { 'n', 'i' } },
+['<C-i>'] = { 'focus_input', mode = { 'n' } },

Apparently <C-i> and Tab are interpreted as the same character. So this was overriding the Tab key behavior. TIL
https://unix.stackexchange.com/a/563480

EDIT: It looks like I did grab that from the default config options listed in the README, so idk if you feel like that ought to be updated to something different to prevent people from making this mistake— or just remove the 'i' (insert mode) option?

[sudo-tee]

Thanks for the info.

Some terminal effectively use C-i as Tab chars. I remember having issues in the pass.

I will remove this binding as it can cause confusion.

By curiosity which terminal are u using?

[sei-dwtompkins]

That was a real rabbit hole, it felt a bit hilarious when that simple change got it working again. These tests were in Ghostty.