Description:
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This is not a bug but a feature request. I thought someone already asked it but I wasn't able to find anything like that. 
I would like to know if it's possible to have reversed assignment string operator.
Thank you


Test script:
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$a =. $b; // same as $a = $b . $a;

Expected result:
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$a = 'World';
$b = 'Hello ';
$a =. $b; //$a worth now "Hello World";

//Multiple string operations in assignements
$a = 'a'; $b = 'b'; $c = 'c';
$c .= $b .= $a; //$c worth now 'cba'

$a = 'a'; $b = 'b'; $c = 'c';
$c =. $b =. $a; //$c worth now 'abc'

Actual result:
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Not implemented (yet?)
Only the following snippet works:

$a = 'a'; $b = 'b'; $c = 'c';
$c .= $b .= $a; //$c worth now 'cba'