## Expected behavior, english is required
Nim code should get formatted via nimpretty but error is raised instead.
Other "lang#nim" layer features seems to work correctly.
## The reproduce ways from Vim starting (Required!)
open any nim source file like
```nim
func asd: float = 5.0
echo asd()
```
do
`SPC b f`
format_on_save causes same error
## Debug info
```
Error detected while processing function neoformat#Neoformat[5]..<SNR>210_neoformat:
line 77:
E482: Can't open file with an empty name
```
```
$ nim --version
1.4.8
```
```
$ nimpretty --version
0.2
```
```
$ cd .SpaceVim
$ git log --pretty=format:'%h' -n 1
8df089b5
```
running nimpretty manually works