Waiting for 9.6 – Add psql PROMPT variable showing the pid of the connected to backend.

On 7th of July, Andres Freund committed patch:

Add psql PROMPT variable showing the pid of the connected to backend.
 
The substitution for the pid is %p.
 
Author: Julien Rouhaud
Discussion: <a href="http://git.postgresql.org/gitweb/?p=postgresql.git;a=object;h=116262CF971C844FB6E793F8809B51C6E99D48">116262CF971C844FB6E793F8809B51C6E99D48</a>@BPXM02GP.gisp.nec.co.jp

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