Author: robchur

Description:
If a user's signature contains ~~~, ~~~~ or ~~~~~, then these will not be
expanded to their signature during editing. However, this inserts raw tilde
characters into text which causes the next user's signature to be inserted upon
their next edit.

Not only is this leading to some messy templates being created; having arbitrary
text plonked in the middle of a user's signature could lead to interesting
problems in the future. In addition, a few users on En. have raised that it
could be used for "fraudulent" purposes.

I've long maintained that we should be restrictive about what goes into
signatures. I'll be posting a patch which disallows the tilde character in
signatures shortly.

Version: unspecified
Severity: normal