What difference does it make if it got in there accidentally or on purpose?
Stackoverflow is a programmers site, you must expect that a programmmer might go, "Hmm, they're trimming whitespace, wonder what happens if I put 20,000 unicode whitespace characters in there instead of normal whitespace"?
Stackoverflow is a programmers site, you must expect that a programmmer might go, "Hmm, they're trimming whitespace, wonder what happens if I put 20,000 unicode whitespace characters in there instead of normal whitespace"?