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

2010/8/9 Tom Lane <tgl@sss.pgh.pa.us>:
> Robert Haas <robertmhaas@gmail.com> writes:
>> On Sun, Aug 8, 2010 at 1:14 PM, Tom Lane <tgl@sss.pgh.pa.us> wrote:
>>> What exactly is the point of the \sf command?
>
>> I rather like \sf, actually; in fact, I think there's a decent
>> argument to be made that it's more useful than the line-numbering
>> stuff for \ef.  I don't particularly like the name "\sf", but that's
>> more because I think backslash commands are a fundamentally unscalable
>> approach to providing administrative functionality than because I
>> think there's a better option in this particular case.  It's rather
>> hard right now to get a function definition out of the database in
>> easily cut-and-pastable format.
>
> Um, but \sf *doesn't* give you anything that's usefully copy and
> pasteable.  And if that were the goal, why doesn't it have an option to
> write to a file?

there are not a line numbers. And you can't to use a result of \df+ too.

>
> But it's really the line numbers shoved in front that I'm on about here.
> I can't see *any* use for that behavior except to figure out what part of
> your function an error message with line number is referring to; and as
> I said upthread, there are better ways to be attacking that problem.
> If you've got a thousand-line function (yes, they're out there) do you
> really want to be scrolling through \sf output to find out what line 714

\sf supports a pager
\sf can show lines from entered number

so
\sf foo 700 -- show from line 700

Best regards

Pavel Stehule



> is?
>
>                        regards, tom lane
>