Clearing window (^L) messes up command line

[jerry]

Configuration Information [Automatically generated, do not change]:
Machine: i686
OS: cygwin
Compiler: gcc
Compilation CFLAGS:  -DPROGRAM='bash.exe' -DCONF_HOSTTYPE='i686'
-DCONF_OSTYPE='cygwin' -DCONF_MACHTYPE='i686-pc-cygwin'
-DCONF_VENDOR='pc' -DLOCALEDIR='/usr/share/locale' -DPACKAGE='bash'
-DSHELL -DHAVE_CONFIG_H -DRECYCLES_PIDS  -I.  -I/tmp/bash-3.0
-I/tmp/bash-3.0/include -I/tmp/bash-3.0/lib   -O2
uname output: CYGWIN_NT-5.0 PN100-01-1-123s 1.5.17(0.129/4/2) 2005-05-25
19:38 i686 unknown unknown Cygwin
Machine Type: i686-pc-cygwin

Bash Version: 3.0
Patch Level: 16
Release Status: release

Description:

Typing in a command (without hitting <CR>), and then clearing the window
with ^L results in extra characters being added to the command line.
This may be the result of bash not properly taking into account escape
sequences in the prompt.


As an example:

250 scripts > ls /bin              - <CR> not typed yet

Now I press ^L, and the window looks like:

250 scripts > ls /bin /bin

Trying to erase the entire line using BS, leaves:

250 scripts > ls /b


My prompt is set to:

PS1='\[\e]2;\w\007\]\[\e[1;31m\]\# \[\e[32m\]\W \[\e[36m\]> \[\e[0m\]'


Repeat-By:

Set prompt to:

PS1='\[\e]2;\w\007\]\[\e[1;31m\]\# \[\e[32m\]\W \[\e[36m\]> \[\e[0m\]'

At the shell prompt, type a command without hitting <CR>.
Now type ^L.   Observe extra chars added to the command.

Backspace to try to eliminate the entire line.  Observe that some
chars cannot be erased.


Fix:

(I have none.)