Description of problem:
The entry widget allows to enter a larger text than it's size, which is
perfectly ok. The problem occurs when an user tries to delete a portion of large
text so that the cursor is moved right on the beginning of the widget. The user
cannot see what he actually deletes at this point.

Version-Release number of selected component (if applicable):


How reproducible:
always

Steps to Reproduce:
1. enter text larger than the entry widget
2. try to delete it
3.
  
Actual results:
One cannot see what he deletes when the text is deleted up to the beginning of
the entry widget.

Expected results:
Some context should be left at the beginning of the widget so that an user sees
what will be deleted when he goes on deleting the text.

Additional info: