Extension talk:DollarSign

Note that when this extension is used with ConfirmAccount extension, the variable references in the confirmation emails, such as "username: $1" are replaced with the math tags, such as "username: <math>1", which breaks the emails. This unwanted interference might happen for other extensions as well. I don't know of a proper fix, and the extension is too useful, so I just escaped the dollar signs in the ConfirmAccount strings, such as "username: \$1".