Update to "bug in \[ handling in PS1"

[Rahul Sahadevan]

Hi,
    The previous post wherein I said that the 2nd "\[","\]" block is handled
incorrectly was wrong.

    The exact scenario under which the "\[","\]" is not handled correctly is
when the "\[" occurs in PS1 after 80 characters ( or whatever is $COLUMNS )
such as for example happens when the "\[" occurs after a \w which displays
80 characters or more

    I can repeat this by setting PS1 as follows ( assuming that the
\e[00;32m is the escape sequence for changing the colour in the terminal
which in my case is rxvt/aterm )
export
PS1="AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
AAAAAAAAAAAAAAAAAAAAA$\[\e[00;32m\]"

regards,
Rahul.