Various plugins that I use load their own results into a buffer in the quickfix window. For example, ack.vim loads it's search results there.
I would like to turn off various things like spell checking and the 80 column line indicator when buffers are loaded into the quickfix window.
How do I detect that the buffer is loaded in the quickfix window?
I have this so far, which turns off the 80 column marker for quickfix windows.
au BufReadPost quickfix setlocal colorcolumn=0