What is the length of tuple with a TOAST pointer?

From: Vignesh Raghunathan <vignesh(dot)pgsql(at)gmail(dot)com>
To: pgsql-hackers(at)postgresql(dot)org
Subject: What is the length of tuple with a TOAST pointer?
Date: 2015-09-04 20:45:05
Message-ID: CAD_AmVjwAwWgoHs_si6DAYN5JqfykPHJUMiwAGhb93OQWKUwRQ@mail.gmail.com
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Hello,

If a tuple has a pointer to a TOAST table entry, would the tuple's length
stored in its corresponding Item include the length of the entry in the
TOAST table?

Thanks,
Vignesh

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