Hi,
Currently guc-file.c allows the following as guc names:
ID {LETTER}{LETTER_OR_DIGIT}*
QUALIFIED_ID {ID}"."{ID}
That is either one token starting with a letter followed by numbers or
letters or exactly two of those separated by a dot.
Those restrictions are existing for neither SET/set_config() via SQL nor
for postgres -c styles of setting options.
I propose loosening those restrictions to
a) allow repeatedly qualified names like a.b.c
b) allow variables to start with a digit from the second level onwards.
Additionally, should we perhaps enforce the same rules for -c and
set_config()/SET?
Trivial patch that only extends the space of valid names for
postgresql.conf attached.
Greetings,
Andres Freund
--
Andres Freund http://www.2ndQuadrant.com/
PostgreSQL Development, 24x7 Support, Training & Services