I was looking for information about restrictions bboard places on
user-entered html (didn't see any glancing through the code, but it
was just a glance) and I happened on
https://openacs.org/bboard/q-and-a-fetch-msg.tcl?msg_id=0000d9 .
Did you end up putting escaping of backslashes in the pg driver?
Because I can write [backslash single-quote single-quote] just fine
on my server's bboard, but not here.