TYPO3.Fluid

Assume the following case:
<f:alias map="{foo: '\'bar\''}"> {foo} </f:alias>

Epected:
Output 'bar' (including the quotes)

Actual:
Output 'bar\

Cause:
unquoteString uses trim() to strip starting and ending quotes, however trim is not restricted to trimming only one char on both sides, hence removes both trailing single quotes from the input string, leaving "\'bar\" to be unescaped.

Solution:
preg_replace should be used instead with a non-repeating pattern, e.g. preg_replace('/(^\'|\'$)/', '', $quotedValue)