Michael Paquier <mich...@paquier.xyz> writes: > Is there a reason why we don't just use islower() or is that just to > get something entirely local independent?
islower() and related functions are not to be trusted for this
purpose. They will certainly give locale-dependent results,
and they might give entirely wrong ones if there's any inconsistency
between the database encoding and what libc thinks the locale is.
regards, tom lane
