Backspace over whitespace

" Paradigm's <bs>   ;)
" <bs> will effectively undo <cr> when autoindent is on
inoremap <bs> <c-o>:call BackspaceIgnoreIndent()<cr>
function! BackspaceIgnoreIndent()
    if col(".") <= match(getline("."),"[^[:space:]]") && col(".") != 1
        exec "normal a\<c-u>\<c-h>"
    else
        exec "normal a\<c-h>"
    endif
endfunction