wrong PS1 var width calculation

[crquan]

Configuration Information [Automatically generated, do not change]:
Machine: i386
OS: linux-gnu
Compiler: gcc
Compilation CFLAGS:  -DPROGRAM='bash' -DCONF_HOSTTYPE='i386' 
-DCONF_OSTYPE='linux-gnu' -DCONF_MACHTYPE='i386-redhat-linux-gnu' 
-DCONF_VENDOR='redhat' -DLOCALEDIR='/usr/share/locale' -DPACKAGE='bash' -DSHELL 
-DHAVE_CONFIG_H   -I.  -I. -I./include -I./lib  -D_GNU_SOURCE 
-D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64 -O2 -g -pipe -Wall 
-Wp,-D_FORTIFY_SOURCE=2 -fexceptions -fstack-protector 
--param=ssp-buffer-size=4 -m32 -march=i386 -mtune=generic 
-fasynchronous-unwind-tables
uname output: Linux debra.zlug 2.6.27.5-117.fc10.i686 #1 SMP Tue Nov 18 
12:19:59 EST 2008 i686 i686 i386 GNU/Linux
Machine Type: i386-redhat-linux-gnu

Bash Version: 3.2
Patch Level: 39
Release Status: release

Description:
        I have set PS1 var to this:
        PS1='\[\033[01;32m\]\u@\h\[\033[01;34m\] \w \[\e[1;33;40m\]$? 
\$\[\033[00m\] '
        according to bash manual, if I use character like \e[1;33;40m similar 
that
        doesn't occupy the width, use \[ and \] sequence to close them,

        But unfourtunalte, that seems not work.

        I think it's a regression that I used to use this PS1 while bash-3.0 or 
eariler.

Reproducible: Always    
        
Repeat-By:
        [Describe the sequence of events that causes the problem
        to occur.]

Fix:
        [Description of how to fix the problem.  If you don't know a
        fix for the problem, don't include this section.]