[Console] Support empty values for options #21215
Description
| Q | A |
|---|---|
| Bug report? | yes |
| Feature request? | no |
| BC Break report? | no |
| RFC? | no |
| Symfony version | 2.7 |
Fabien added this comment about this bug:
#20044 this is a bug on Console that should be fixed, when passing --prefix="", the prefix should be empty.