symfony/symfony — pull request #12687 by Lumbendil (2014-11-29 11:48:32+00:00)
Title: Deprecated the exception listener format request attribute.

Q | A
| ------------- | ---
| Bug fix? | no
| New feature? | no
| BC breaks? | no
| Deprecations? | yes
| Tests pass? | yes
| Fixed tickets | #12624
| License | MIT
| Doc PR | none