Fix output of tabs
Fix output of tabs

When a tab is present in the input, output the appropriate number of
spaces. I couldn't achieve the same behavior when the OXTABS output mode
is enabled for some unknown reason.

DBOTW/pick,thoughtbot/pick,calleerlandsson/pick,calleerlandsson/pick,thoughtbot/pick,prahlad37/pick,thoughtbot/pick,DBOTW/pick,prahlad37/pick,DBOTW/pick,thoughtbot/pick,prahlad37/pick,prahlad37/pick,calleerlandsson/pick