Re: proposal: multiple psql option -c

On Tue, Dec 1, 2015 at 1:53 PM, Michael Paquier
<michael(dot)paquier(at)gmail(dot)com> wrote:
> Attached is a patch implementing those suggestions. This simplifies
> the code without changing its usefulness. If you are fine with those
> changes I will switch this patch as ready for committer.

I tested the v07 patch (so not Michael's version) a few days ago but
didn't send this email earlier.

I combined various -c and -f with --echo-all, --single-transaction,
\set ON_ERROR_STOP=1, separate -c "VACUUM", "SELECT + VACUUM" in a
single and in two -c, inserting -f - somewhere in the middle of the
other -c and -f. They all behave as I would expect.

One maybe slightly surprising behaviour is that -f - can be specified
multiple times and only the first one has an effect since the others
act on an exhausted stdin. But I don't think forbidding multiple -f -
is better.

As for the code (these still apply to Michael's latest patch):

1. the be compiler quiete comment is not good English, /* silence the
compiler */ would be better or remove it completely

2. shouldn't atyp in SimpleActionListCell be of type enum _atypes?
Otherwise why an enum if it's casted to int when actually used? If
it's an enum the repeated ifs on cell->atyp should be a switch, either
with a default Assert(0) or no default which makes gcc give a warning
if an enum value is ever added without having a corresponding case.