Disable source for certain filetypes

[shinzui]

Sorry if this has been answered elsewhere, but I couldn't find a way to disable a source for a particular file type. What's the API, in general, to dynamically configure sources? My use case is that I want to disable the emoji source in Haskell and PureScript since : is commonly used.

[dmitmel]

What's the API, in general, to dynamically configure sources?

You can just call cmp.setup or its variants repeatedly. E.g.:

-- ftplugin/haskell.lua
cmp.setup.buffer({
  sources = { ... }
})

The problem is that cmp.setup doesn't perform any configuration merging, so a call to it or cmp.setup.buffer replaces the configuration entirely (or not, I think it is done per-section. So sources, completion, documentation etc, the top-level keys, are separate sections). I don't do this myself, but if I were you, I'd do something like this:

-- ftplugin/haskell.lua
local cmp = require('cmp')
local sources = cmp.get_config().sources
for i = #sources, 1, -1 do
  if sources[i].name == 'emoji' then
    table.remove(sources, i)
  end
end
cmp.setup.buffer({ sources = sources })

#632 would make this easier.

[shinzui]

Thanks, @dmitmel. I'll give it a try.