Different icons for different filetypes

[goerz]

Is it possible to set a different icons table (in symbols) for different filetypes? For example, I would like to use a full set of symbols for code outlines, but no symbols for markdown files.

[hedyhli]

Hi!

Yes, you can. There's a section in the docs dedicated to customizing this specifically.

In fact, I use this myself:

https://github.com/hedyhli/dotfiles/blob/8b41a2c8135cd579ac7adacb3ca94de993a6b6be/.config/nvim/lua/plugins/outline.lua#L77

    symbols = {
      icon_fetcher = function(k)
        local ft = vim.api.nvim_buf_get_option(require('outline').current.code.buf, "ft")
        -- There can only be kind String in markdown so... let's not have the
        -- eye candy here
        if ft == 'markdown' and k == 'String' then
          return ""
        end
        return false
      end,
      icon_source = "lspkind",
    }

No icons are shown when it's markdown. Falls back to lspkind otherwise in my case.

[goerz]

That works perfectly, thanks! I had seen the section in the docs, but I didn't think of getting ft the way you do in that snippet. That might be worth adding to the Tips in the README.

[hedyhli]

You're right! I hadn't included this specific example previously as it was bit of a hack, using an undocumented API. I've now added this feature officially -- icon_fetcher can now accept a second argument which will be the code buffer number.

The snippet you're using above will still continue to work.