map old tab behaviour to <s-tab>

[Leandros]

I want to map the old <tab> behaviour to <s-tab>, since I can't indent after words anymore with supertab, it's always trying to suggest completions.
Simply doing inoremap <s-tab> <tab> doesn't work.

[ervandew]

supertab maps <s-tab> to scroll through completions in reverse and maps a literal tab to <c-tab>, so in your case you could just swap the two:

let g:SuperTabMappingBackward = '<c-tab>'
let g:SuperTabMappingTabLiteral = '<s-tab>'