symfony/symfony — pull request #12411 by nicolas-grekas (2014-11-04 09:54:29+00:00)
Title: [VarDumper] Use Unicode Control Pictures

| Q | A
| ------------- | ---
| Bug fix? | yes
| New feature? | no
| BC breaks? | no
| Deprecations? | no
| Tests pass? | yes
| Fixed tickets | -
| License | MIT
| Doc PR | -

I wasn't satisfied with how control chars where dumped, until I found the [Unicode Control Pictures](http://www.unicode.org/charts/PDF/U2400.pdf).
This PR takes advantage of them:

![capture du 2014-11-04 10 52 15](https://cloud.githubusercontent.com/assets/243674/4897678/752fac20-6408-11e4-9186-7b788c9a88bb.png)