[TxMt] where did soft tabs go? (rev. 680)

In regards to :

[CHANGED] Rather than set soft tabs (that spaces should be used instead of tabs) and tab size in the bundle editor for language specific tab settings, the popup in the status bar will now record changes only for the current (root) scope -- for scopes where an explicit choice hasn't been made, it'll use the closest with an explicit choice, and in case of a tie, it picks the one which most recently was updated.

What am I missing here? I cannot find the soft tabs setting anymore. I thought it was in preferences. I.E., I had trouble with a Python script after updating to rev. 680 (had to convert all spaces to tabs) and want to make sure that I am still editing with spaces as tabs.

thanks, K