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The attached patch actually does two related things. First,
it keeps track of whether or not you are in a trnasaction
and modifies the prompt slightly when you are by putting
an asterick at the very front of it.
Secondly, it adds a "begin transaction" option that, when
enabled, ensures that you are always inside a transaction
while in psql, so you can always rollback. It does this
by issuing a BEGIN at the appropriate times. This patch
(if ever accepted) conflicts a bit with LO_RTANSACTION:
psql now *does* have a way to know if it is in a
transaction or not, so that part may need to get rewritten.
Greg Sabino Mullane greg@turnstep.com
PGP Key: 0x14964AC8 200202061602
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