Re: TAB when the region is active

[Richard Stallman]

      It inserts a single TAB whereas
    C-M-\ (`indent-region') tries to indent the region.  However, what C-M-\
    does in text modes is not useful too because it shifts each consequent
    line relative to the previous line in a staircase-like style.

It sounds like we should fix C-M-\ in Text mode to do something useful,
then make TAB with a region do the same thing.