What's the best way to fix 'blink-cmp-signature' is not a valid language name?

[tristan957]

It's a treesitter error, and I don't see a parser in nvim-treesitter repo.

Error executing vim.schedule lua callback: /usr/share/nvim/runtime/lua/vim/treesitter/language.lua:101: 'blink-
cmp-signature' is not a valid language name

[Quitlox]

This is (likely) not a blink.cmp problem. You have some other plugin that is trying to parse the signature window using treesitter. You'll need to disable plugins until you find the culprit, and then ensure it does not activate on the blink-cmp-signature filetype.

[Quitlox]

Only way to find the problem is unfortunately to trim down your configuration until it doesn't happen anymore. Either you'll stumble on an incompatible / misbehaving plugin, or you found a bug in blink.cmp.

[tristan957]

My foldexpr is set to

vim.opt.foldexpr = "v:lua.vim.treesitter.foldexpr()"

That sounds like the problem. I'll create a filetype autocommand to set foldexpr to something else.

[husa]

@tristan957 have you found a fix?

[tristan957]

The problem was caused by another plugin https://github.com/nvim-treesitter/nvim-treesitter-context. It got an update like a month ago-ish which fixed the issue.

[husa]

Thanks for update

[Muizzyranking]

I also had this problem but it stopped when I set signature to false.

The issues happens when I select copilot's suggestion so I am guessing it is from giuxtaposition/blink-cmp-copilot.

[tristan957]

I don't use that plugin, so I at least don't think it is specific to it

[Muizzyranking]

Maybe you should turn off signature.

[tristan957]

Yes, the issue goes away without signature. Was hoping to get a better solution than that.

[tristan957]

I keep seeing this in Zig files, so I tried to narrow down a problematic plugin. I could reproduce the issue with just these plugins:

With this set of plugins and my pared down config, I could only reproduce the issue if I had the following settings:

        vim.wo.foldmethod = "expr"
        vim.wo.foldexpr = "v:lua.vim.treesitter.foldexpr()"

I still find this super confusing... If anyone has more guidance, that would be awesome