>>>
>>>I am sure that VFP team will fix it in version 10.0 :).
>>
>>It's not a bug. The structure of cursors can not be modified by a program, tables' can.
>>
>
>I am not saying it is a bug or not. But the fact is that you CAN change the structure of a cursor using ALTER TABLE CursorName when the column is not longer than 10 characters.
>

You are right, I should have rechecked and go deeper. As long as there are no extended field names, the cursor can be altered freely.

For instance,

CREATE CURSOR CursorName (D1 C(10), D2 C(10))
ALTER TABLE CursorName RENAME D1 TO D1234567890

is allowed, but

CREATE CURSOR CursorName (D1 C(10), D2 C(10))
ALTER TABLE CursorName RENAME D1 TO D1234567890
ALTER TABLE CursorName RENAME D2 TO D_1234567890

raises an error (on the second ALTER), and so does

CREATE CURSOR CursorName (D1 C(10), D1234567890 C(10))
ALTER TABLE CursorName RENAME D1 TO D2