Re: exposing pg_controldata and pg_config as functions

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On 08/20/2015 06:59 AM, Andrew Dunstan wrote:
> Is there any significant interest in either of these?
>
> Josh Berkus tells me that he would like pg_controldata information,
> and I was a bit interested in pg_config information, for this
> reason: I had a report of someone who had configured using
> --with-libxml but the xml tests actually returned the results that
> are expected without xml being configured. The regression tests
> thus passed, but should not have. It occurred to me that if we had
> a test like
>
> select pg_config('configure') ~ '--with-libxml' as has_xml;
>
> in the xml tests then this failure mode would be detected.

I've found use for them both in the past. A fair amount of bit-rot has
set it no doubt, and these were quick and dirty to begin with, but I
have these hacks from a while back:

https://github.com/jconway/pg_config
https://github.com/jconway/pg_controldata

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