Can't figure out how to use now() in default for tsrange column (PG 9.2)

[Chris Bartlett <c.bartlett@xxxxxxxxxxxxxxx>]

I'm trying to set [now(), 2049-12-31 00:00:00) as the default for a 
tsrange column (Postgres 9.2), but can't figure out how to do it. I'm 
either getting syntax errors or now() is being evaluated, so that the 
default becomes something like [2012-07-14 14:04:35, 2049-12-31 
00:00:00), which is not what I want. Can anyone point me in the right 
direction, please?

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