Re: Should \o mean "everything?"

On Mon, Aug 31, 2015 at 07:18:02PM +0000, Kevin Grittner wrote:
> David Fetter <david@fetter.org> wrote:
> 
> > In a failed attempt to send the output of \pset to a pipe, I
> > noticed that for reasons I find difficult to explain, not every
> > output gets redirected with \o.
> >
> > At first blush, I'd consider this inconsistency as a bug.
> >
> > What have I missed?
> 
> The documentation says:
> 
> | Arranges to save future query results to the file filename or
> | pipe future results to the shell command command. If no argument
> | is specified, the query output is reset to the standard output.
> |
> | "Query results" includes all tables, command responses, and
> | notices obtained from the database server, as well as output of
> | various backslash commands that query the database (such as \d),
> | but not error messages.
> 
> Are you seeing anything inconsistent with the documentation?  If
> so, what?

Perhaps an example would help clarify...

postgres=# \o | perl -pE 's/^/PREFIXED!/'
postgres=# \dt
postgres=# PREFIXED!No relations found.

postgres=# \set 
AUTOCOMMIT = 'on'
ON_ERROR_STOP = ''
PROMPT1 = '%/%R%# '
PROMPT2 = '%/%R%# '
PROMPT3 = '>> '
VERBOSITY = 'default'
VERSION = 'PostgreSQL 9.4.4 on x86_64-unknown-linux-gnu, compiled by gcc (Ubuntu 4.8.2-19ubuntu1) 4.8.2, 64-bit'
DBNAME = 'postgres'
USER = 'postgres'
HOST = '/var/run/postgresql'
PORT = '5432'
ENCODING = 'UTF8'
PSQL_EDITOR = '"/usr/local/bin/vim"'

Cheers,
David.
-- 
David Fetter <david@fetter.org> http://fetter.org/
Phone: +1 415 235 3778  AIM: dfetter666  Yahoo!: dfetter
Skype: davidfetter      XMPP: david.fetter@gmail.com

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