bash inserts semicolon into history when using here-document

[Robert Citek]

Configuration Information [Automatically generated, do not change]:
Machine: i486
OS: linux-gnu
Compiler: gcc
Compilation CFLAGS:  -DPROGRAM='bash' -DCONF_HOSTTYPE='i486'
-DCONF_OSTYPE='linux-gnu' -DCONF_MACHTYPE='i486-pc-linux-gnu'
-DCONF_VENDOR='pc' -DLOCALEDIR='/usr/share/locale' -DPACKAGE='bash'
-DSHELL -DHAVE_CONFIG_H   -I.  -I../bash -I../bash/include
-I../bash/lib   -g -O2 -Wall
uname output: Linux lucid-unr 2.6.32-25-generic #44-Ubuntu SMP Fri Sep
17 20:26:08 UTC 2010 i686 GNU/Linux
Machine Type: i486-pc-linux-gnu

Bash Version: 4.1
Patch Level: 5
Release Status: release

Description:

When using a here-document at the command line, bash inserts a
semicolon into the history.


Repeat-By:

I type the following at a bash prompt:

$ { cat <<eof
eof
}

then press up-arrow.  I see this:

$ { cat <<eof
eof
; }

If I press Enter, I get an error:

-su: syntax error near unexpected token `;'

Bash has inserted a semi-colon before the "}".