Re: psql: Count all table footer lines in pager setup

Erik Wienhold <ewie(at)ewie(dot)name> writes:
> On 2025-10-02 00:25 +0200, Tom Lane wrote:
>> I am not entirely sure that we should commit 0002 though; it may be
>> that the savings is down in the noise anyway once you consider all the
>> other work that happens while printing a big table. A positive reason
>> not to take it is something I realized while checking test coverage:
>> we never execute any of the maybe-use-the-pager branch of PageOutput
>> in the regression tests, because isatty(stdout) will always fail.

I realized that we could address that if we really wanted to,
using the same infrastructure as for tab-completion testing.
0001 and 0002 attached are the same as before, and then I added
0003 which adds a draft-quality TAP test. Code coverage checks
show that this adds only about 10 more lines of coverage in
psql proper, but in print.c most of the pager-related logic is
now covered.

regards, tom lane