E121: Undefined variable: b:projectionist with vim foo.txt (new file)

[blueyed]

vim foo.txt (where foo.txt does not exist) throws this error:

"foo.txt" [New File]
Error detected while processing BufNewFile Auto commands for "*":
E121: Undefined variable: b:projectionist
E116: Invalid arguments for function empty(b:projectionist) |   call projectionist#apply_template() | end
if
E15: Invalid expression: !empty(b:projectionist) |   call projectionist#apply_template() | endif

This does not happen for foo - a file extension is required to trigger it.

[tpope]

A file extension? Or a file with a valid filetype?

[blueyed]

Not sure..
I cannot reproduce it anymore now, even from the same directory as before.