New pg_dump options: exclude tables/schemas, multiple all, wildcards

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Attached is a patch to hopefully make pg_dump a lot more useful.
I started out by making it simply able to avoid dumping a single
table, but, inspired by David Fetter's patch last November, also
added in support for multiple items and limited wildcard matching.

-n and -N control the schemas, and -t and -T control the tables.

Wildcards can be a star at the start, the end, or on both sides
of a term. The patch acts inclusively with conflicts: the -t
option trumps the -N option.

Some examples:

To dump all tables beginning with the string "slony", plus
all tables with the word "log" inside of them:

pg_dump -t "slony*" -t "*log*"

To dump all schemas except "dev" and "qa", and all tables
except those ending in "large":

pg_dump -N "dev" -N "qa" -T "*large"

--
Greg Sabino Mullane greg@turnstep.com
PGP Key: 0x14964AC8 200601152100
http://biglumber.com/x/web?pk=2529DF6AB8F79407E94445B4BC9B906714964AC8
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