[TYPO3] spamProtectEmailAddresses substitutes @ automatically

[Muranyi Arpad]

hi,

when i apply

config.spamProtectEmailAddresses = -2

in TS under TYPO3 4.2, @ in the email addresses gets substituted 
automatically with (at). if i do not need it, my only solution until 
know is applying

config.spamProtectEmailAddresses_atSubst = @

i googled around whether if it's an intended new feature, but found no 
info. do you know something about it?

best reg,
arpad