pgsql: Doc: document POSIX-style time zone specifications in full.

2020-06-18 Thread Tom Lane
Doc: document POSIX-style time zone specifications in full. We'd glossed over most of this complexity for years, but it's hard to avoid writing it all down now, so that we can explain what happens when there's no "posixrules" file in the IANA time zone database. That was at best a tiny minority si

pgsql: Doc: document POSIX-style time zone specifications in full.

2020-06-18 Thread Tom Lane
Doc: document POSIX-style time zone specifications in full. We'd glossed over most of this complexity for years, but it's hard to avoid writing it all down now, so that we can explain what happens when there's no "posixrules" file in the IANA time zone database. That was at best a tiny minority si

pgsql: Doc: document POSIX-style time zone specifications in full.

2020-06-18 Thread Tom Lane
Doc: document POSIX-style time zone specifications in full. We'd glossed over most of this complexity for years, but it's hard to avoid writing it all down now, so that we can explain what happens when there's no "posixrules" file in the IANA time zone database. That was at best a tiny minority si

pgsql: Doc: document POSIX-style time zone specifications in full.

2020-06-18 Thread Tom Lane
Doc: document POSIX-style time zone specifications in full. We'd glossed over most of this complexity for years, but it's hard to avoid writing it all down now, so that we can explain what happens when there's no "posixrules" file in the IANA time zone database. That was at best a tiny minority si

pgsql: Doc: document POSIX-style time zone specifications in full.

2020-06-18 Thread Tom Lane
Doc: document POSIX-style time zone specifications in full. We'd glossed over most of this complexity for years, but it's hard to avoid writing it all down now, so that we can explain what happens when there's no "posixrules" file in the IANA time zone database. That was at best a tiny minority si

pgsql: Doc: document POSIX-style time zone specifications in full.

2020-06-18 Thread Tom Lane
Doc: document POSIX-style time zone specifications in full. We'd glossed over most of this complexity for years, but it's hard to avoid writing it all down now, so that we can explain what happens when there's no "posixrules" file in the IANA time zone database. That was at best a tiny minority si

pgsql: Doc: document POSIX-style time zone specifications in full.

2020-06-18 Thread Tom Lane
Doc: document POSIX-style time zone specifications in full. We'd glossed over most of this complexity for years, but it's hard to avoid writing it all down now, so that we can explain what happens when there's no "posixrules" file in the IANA time zone database. That was at best a tiny minority si