Re: review: psql: edit function, show function commands patch

On Sun, Jul 25, 2010 at 11:42 AM, Pavel Stehule <pavel(dot)stehule(at)gmail(dot)com> wrote:
>> I'm setting this as ready for committer.
>
> Thank you very much

I took a look at this tonight and am a bit mystified by the following bit:

+ /*
+ * PL doesn't calculate first row of function's body
+ * when first row is empty. So checks first row, and
+ * correct lineno when it is necessary.
+ */

Is that true of any PL, or just some particular PL? Is the behavior
described here a bug that we should fix, or is it, for some reason,
considered correct? Is it documented in our documentation?

The implementation of first_row_is_empty() looks pretty kludgey, too.
It seems to me that it will fail completely if the text of the
function definition happens to contain $function$.

CREATE OR REPLACE FUNCTION boom() RETURNS text LANGUAGE plpgsql AS $$
BEGIN SELECT '$function$'; END $$;

--
Robert Haas
EnterpriseDB: http://www.enterprisedb.com
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