quoting and recovery.conf

Is there a reason we require single quotes around boolean values in
recovery.conf?
standby_mode = 'off'

This does not work:
standby_mode = off

I knew there were inconsistencies between quoting in postgresql.conf and
recovery.conf, but I didn't realize it extended to boolean quoting.  I
see this at the top of recovery.conf now:
# This file consists of lines of the form:##   name = 'value'## (The quotes around the value are NOT optional, but the "=" is.)#
and this issue existed in 8.4 as well.  Seems I just never noticed it,
and it not specifically mentioned in the TODO item we already have.

--  Bruce Momjian          http://momjian.us EnterpriseDB                             http://enterprisedb.com