Why some GUC parameter names are not lowercased

[Gurjeet Singh <singh.gurjeet@xxxxxxxxx>]

Is there a reason why Postgres chose to not use all lowercase characters for these parameters' names.

postgres=# select name from pg_settings where name <> lower(name);
     name     
---------------
 DateStyle
 IntervalStyle
 TimeZone
(3 rows)

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Gurjeet Singh

http://gurjeet.singh.im/