TimBrunsmo/oh-my-zsh — comment on commit 417ea1f3af4c78c1b9292105bfb19f8669342342
File:  line 0
By eddorre:

-1 is a valid option. It just gives different formatting.

The valid options for the brew ls command are:

```
usage: ls [-ABCFGHLOPRSTUWabcdefghiklmnopqrstuwx1] [file ...]
```