Can this use the location list instead?

[thejohnfreeman]

I believe this plugin checks the current file only, correct? If so, then maybe it should use the location list and leave the quickfix list for checks of the entire surrounding project. Perhaps a configuration option could be added to choose between setqflist and a function that calls setloclist with the number for the window that gave the command (i.e. result of winnr(); using 0 for "current window" may not do the right thing if the user changes windows during an async check).