Alvaro Herrera <alvherre@2ndquadrant.com> writes:
> So, Tom added a coding pattern for doing this in commit 8f8154a503c7,
> which is ostensibly also to be used in pg_regress [1] -- maybe it'd be
> useful to have this in src/common?
Done, see pg_get_line() added by 67a472d71.
regards, tom lane