Completion can be very slow on large `.rb` files

[Drew-Daniels]

Make sure you have done the following

• I have updated to the latest version of blink.cmp
• I have read the README

Bug Description

I've noticed that when working on large .rb files, getting completions to appear can take 4-5 seconds, which is much slower than the time it takes on other files. Maybe it's unique to ruby files, or similar behavior happens when files are large (1400+ lines) but I've only noticed this on large .rb files.

2024-12-18.10-50-45.mov

Relevant configuration

require("blink-cmp").setup({
  keymap = {
    ["<C-u>"] = { "scroll_documentation_up" },
    ["<C-d>"] = { "scroll_documentation_down" },
    ["<C-n>"] = { "select_next" },
    ["<C-p>"] = { "select_prev" },
    ["<C-e>"] = { "accept" },
    ["<C-space>"] = { "show" },
    ["<C-q>"] = { "hide" },
    ["<C-k>"] = { "show_documentation" },
    ["<C-j>"] = { "snippet_forward" },
    ["<C-h>"] = { "snippet_backward" },
  },
  nerd_font_variant = "mono",
  highlight = {
    use_nvim_cmp_as_default = true,
  },
  windows = {
    documentation = {
      auto_show = true,
    },
  },
  sources = {
    completion = {
      enabled_providers = { "lsp", "path", "snippets", "buffer", "lazydev" },
    },
    providers = {
      lsp = { fallback_for = { "lazydev" } },
      lazydev = { name = "LazyDev", module = "lazydev.integrations.blink" },
      snippets = {
        name = "Snippets",
        module = "blink.cmp.sources.snippets",
        score_offset = -3,
        opts = {
          friendly_snippets = true,
          search_paths = { vim.fn.stdpath("config") .. "/snippets" },
          global_snippets = { "all" },
          extended_filetypes = {
            eruby = { "ruby", "javascript" },
            typescript = { "javascript" },
            vue = { "javascript", "html", "css" },
          },
          ignored_filetypes = {},
        },
      },
    },
  },
})

neovim version

v0.10.2

blink.cmp version: branch, tag, or commit

main

[Saghen]

This is an issue with your LSP not returning completions, rather than with blink.cmp itself. You might want to look into the issue tracker of the LSP you're using

[Drew-Daniels]

Got it, thanks a lot @Saghen. Looks like it was because I had this in my config, but didn't have solargraph installed. I guess something was silently erroring out.

lspconfig.solargraph.setup({
  filetypes = { "ruby", "eruby" },
  capabilities = capabilities,
})

After removing this I'm now seeing completions immediately come up