Automatically cancel LuaSnip session, except when selecting an item from blink/omnicompletion menu

[maxigaz]

I've been using this autocommand to cancel the current LuaSnip session when I'm in Insert mode and and press <Esc>. (So, pressing <Tab> no longer jumps to the next tabstop.)

vim.api.nvim_create_autocmd('ModeChanged', {
  pattern = '*',
  callback = function()
    if ((vim.v.event.old_mode == 's' and vim.v.event.new_mode == 'n') or vim.v.event.old_mode == 'i')
        and require('luasnip').session.current_nodes[vim.api.nvim_get_current_buf()]
        and not require('luasnip').session.jump_active
    then
      require('luasnip').unlink_current()
    end
  end
})

It works great to my liking, except that it also cancels the session when I do any of the following:

• I type in something to trigger blink.cmp's autocompletion and press <C-n>.
• I press <C-x> (for <C-x><C-f>, which brings up Neovim's native omnicompletion menu).

How can I change the above autocommand so that these two exceptions are included?

[L3MON4D3]

You can check whether blink.cmp has an open window via require("blink.cmp").is_visible(), and whether the native completion is visible via vim.fn.pumvisible(), maybe skipping the unlink_current if either is set is sufficient?

[maxigaz]

Before combining require("blink.cmp").is_visible() and vim.fn.pumvisible() in one statement, I've tried them individually.

Using and not require("blink.cmp").is_visible() in the if statement is working well:

  vim.api.nvim_create_autocmd('ModeChanged', {
    pattern = '*',
    callback = function()
      if ((vim.v.event.old_mode == 's' and vim.v.event.new_mode == 'n') or vim.v.event.old_mode == 'i')
          and require('luasnip').session.current_nodes[vim.api.nvim_get_current_buf()]
          and not require('luasnip').session.jump_active
+         and not require("blink.cmp").is_visible()
      then
        require('luasnip').unlink_current()
      end
    end
  })

However, when I replace that line with and vim.fn.pumvisible() == 0 (as it returns 0 instead of false), hitting <Esc> doesn't call require('luasnip').unlink_current() anymore.

Edit: After some further usage, I feel like adding only and not require("blink.cmp").is_visible() like I did earlier is not enough, because now, I have a new problem: when the blink.cmp is visible and I do want to cancel LuaSnip, pressing <Esc> doesn't cancel the session anymore.

[lacarthur]

Hey, I'm a bit late to the discussion, and I don't use blink, but when I switched from cmp to the native omnifunction for completion, I also had this problem. I investigated and from what I understand, when the omnifunc completion menu pops up, neovim briefly enters mode 'ic' which triggers the function.

What I did was this

if
  ((event.old_mode == 's' and event.new_mode == 'n') or (event.old_mode == 'i' and event.new_mode ~= 'ic'))
  and ls.session.current_nodes[vim.api.nvim_get_current_buf()]
  and not ls.session.jump_active
then
  ...
end

and it fixed it for me. Hope this helps.