Interval literal not ANSI compliant

The Postgres INTERVAL literal is not compliant with
the ANSI 2003 SQL Spec. Here's the Postgres way:

# select INTERVAL '45 DAY';
interval
----------
45 days
(1 row)

The spec. says

<interval literal> ::= INTERVAL [ <sign> ] <interval
string> <interval qualifier>

<interval string> ::= <quote> <unquoted interval
string> <quote>

Note specifically that the quotes only enclose the
number, not the interval qualifier. So Postgres
interval literals should be

# select INTERVAL '45' DAY;
interval
----------
00:00:00
(1 row)

Note that Postgres accepts the ANSI form but then
interprets it completely incorrectly. IMHO this is
much worse than rejecting the ANSI form. Are there
plans to fix this? I am using 7.4.3.

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