NA introduced into position when opening curly braces

[andyquinterom]

The language server introduces NA when code like the following occurs

function() {
  test <- print(
}

This causes for the Neovim lsp interface to error out. In this like shiny this is a very common thing to find.

My fix was pretty easy, I went to the code_point_to_unit function and added the following:

result[is.na(pts)] <- m

This fixes the issue and does not seem to break any other behaviour. This is a pretty minor fix. Hope it can get merged!

[andyquinterom]

Some more context:

This is the error I was getting on Neovim after configuring the LSP.

I modified the neovim source code to expose the exact comparison that was causing the error. See that is tries to compare a string with a number.

After exposing the variable is was a string containing NA. This is pretty common R stuff to from there I tried to make my fix.

[osthomas]

Related: #481