Indentation

Hi, I've been using Quanta+ for more than a year now and there's still 
something I couldn't figure (and I guess should be a FAQ).

I often work on Python, HTML and CSS files, having Quanta's indentation 
set to Python's "canonic" style (4 spaces) by default. Now my question 
is: is there any way I can toggle to a 1 tab indentation?

It seems that somebody had already requested a similar feature[1], 
however in the description he says "So what I have to do right now is to 
set a default indentation type for the editor (for example S&S C Style) 
and then every time I open an HTML or CSS file go to 
Tools>Indentation>Normal". Unfortunately, that doesn't seem to work for 
me - the menu produces no change at all in the way I input indentation 
(either pressing the tab key or doing ctrl-I), it only takes into 
account the settings under Settings > Configure Editor...


TIA,
Pablo

[1] http://bugs.kde.org/show_bug.cgi?id=151014