[TxMt] Help with sort command

[Indranil Mookherjee]

I am new to TextMate. I have a bunch of lines and I am trying to sort  
them. I select them and use the Actions popup and choose Sort from  
the menu choices under Text, the text to be sorted disappears.

I tried to run the Sort command through the Filter through command  
and got the same result. Empty document.

I am sure that my newbieness is showing through but can somebody  
please figure out what exactly is wrong?

Indro