mathed bug: double subscript

[Eran Tromer]

Hello,

It's possible to create a double subscript by typing the following in
mathed:
  x_1<space>y_2<left><left><left><DEL>

The generated latex code contains "x_{1}_{2}", and so does the saved
.lyx file.

The bug exists in the current 1.2.0cvs, and the double subscript is
displayed just like "x_{12}" but with a some space between the digits.
It also exists in 1.1.6fix2 and earlier, where the two subscript are
rendered on top of each other.


  Regards,
    Eran Tromer