[TYPO3-core] RFC: fix bug #3427 - config.spamProtectEmailAddresses may garble mail link

[Martin Kutschker]

Martin Kutschker schrieb:
> Hi!
> 
> Type: bugfix
> Branch: HEAD, TYPO3_4-0
> 
> Problem: When you use -3 and -5 for protection then the code will shift 
> the mail link characters in such a way that the mail link is unusable.
> 
> Solution:
> 
> Instead of doing a plain shift to the left or right make the shift 
> circle within a given character range. The code uses the three main 
> areas of ASCII that are used in mail addresses:
> 
> 0-9 . , - + / :
> A-Z @
> a-z
> 
> The new code accepts also -10 to 10 (instead of -5 to 5).

Sorry for the wrong patch. I thought about renaming linkTo_UnCryptMailto 
(there is no word "uncrypt") but I don't do know. So only pagegen is affected.

Here's the patch without the Javascript alert().

Masi
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