problems with DEL, Backspace and C-u over multiple lines #25

If the current input needs to be displayed over multiple lines, DEL, Backspace and C-u don't behave as expected. Assuming the input takes two lines to display, you can observe the following behaviour:

• DEL and Backspace in the first line removes only characters from the first line and doesn't update the second line.
• C-u at the end of the input does only remove the first line and leaves the second line untouched.
• C-u somewhere in the first line seems to work except that the second line is not updated.

• Bitbucket: https://bitbucket.org/bobf/bpython/issue/25
• Originally Reported By: Sebastian Ramacher
• Originally Created At: 2009-06-11T20:55:41.156