Better VarDumper escaping.
Better VarDumper escaping.

In the current implementation, strings with a literal backslash immediately followed by a control character get formatted as:

    \<cchr>\n</cchr>

… which actually escapes the opening tag for cchr. And this screws up Symfony's OutputFormatter. Forever, apparently.

Fixes #352
bobthecow/psysh,bobthecow/psysh