Robert Haas <robertmhaas@gmail.com> writes:
> On Wed, Mar 4, 2015 at 9:06 AM, Peter Eisentraut <peter_e@gmx.net> wrote:
>> Could you give an example of the sort of thing you wish to do?
> e.g. grep for a function name and check that all the matches have the
> same volatility.
Well, grep is not going to work too well anymore, but extracting a
specific field from an entry is going to be beyond the competence of
simple grep/sed tools anyway if we allow column default substitutions.
I think a fairer question is "can you do that in a one-liner Perl script",
which seems like it might be achievable given an appropriate choice of
data markup language.
regards, tom lane