Comment #3 on issue 259 by limodou: Feature request: Count data bytes when selecting some text
http://code.google.com/p/ulipad/issues/detail?id=259
So, for ascii, characters count will be the same as unicode count. But for unicode especially chinese character, one chinese character in gtk encoding will be 2 bytes, but in utf-8 encoding will be 3 bytes.
And you can count the selection text youself right now like this: open shell windows, and enter len(app.frame.document.GetSelectedText())
