Backspacing the last character of the line eats the prompt

[GoogleCodeExporter]

What steps will reproduce the problem?
1. Prompt is: "$ "
2. Type in prompt: "$ abc"
3. Backspace twice: "$ a"
4. Backspace one more time: ""
5. It ate the prompt!

What is the expected output? What do you see instead?
Backspacing BEFORE any input has been entered will not eat the prompt, as 
expected. But backspacing after any input will eat it.

What versions of mintty, Cygwin/MSYS, and Windows are you using?
1.7.31-2

Original issue reported on code.google.com by dvug...@gmail.com on 22 Jul 2014 at 9:51

[GoogleCodeExporter]

There was a bug in my PS1. Please ignore. :)

Original comment by dvug...@gmail.com on 22 Jul 2014 at 10:17