BUG #6734: create table (like ...) fails if an index has a comment

The following bug has been logged on the website:

Bug reference:      6734
Logged by:          Daniele Varrazzo
Email address:      daniele.varrazzo@gmail.com
PostgreSQL version: 9.1.4
Operating system:   Linux
Description:=20=20=20=20=20=20=20=20

Weird, isn't it? Test case below.=20

Dropping the comment, the create table command works as expected. The
command fails with an: "ERROR: relation "foo2_f1_idx" already exists".

begin;

CREATE TABLE foo
(
  id serial primary key,
  f1 integer NOT NULL
);


CREATE INDEX foo_idx1 ON foo (f1);

CREATE INDEX foo_idx2 ON foo (f1) WHERE id > 10;

COMMENT ON INDEX foo_idx2 IS 'whatever';

create table foo2 (like foo including all);

rollback;