I saw that this got implemented in D15342 and I saw the test plan there, but I couldn't figure out the syntax.
In CLI I am able to write an alias with
`arc alias test help'
Which is displayed when typing `arc aliases`:
```
Alias Command Type
arc test arc help Arcanist Command
```
However, in the `.arcconfig` file I write:
```lang=json
"aliases": {
"test2": "help"
}
```
But `arc aliases` seems broken:
```
Alias Command Type
arc test arc help Arcanist Command
arc test2 arc Arcanist Command
```
and when i run `arc test2` I get
```
Exception
Argument 1 passed to head() must be of the type array, string given, called in /usr/local/phabricator/arcanist/src/workflow/ArcanistAliasWorkflow.php on line 140 and defined
(Run with `--trace` for a full exception trace.)
```
What did I do wrong?