Add test for tab character bug
Add test for tab character bug

gforcada/isort,jmullan/isort,jamesbroadhead/isort,tomviner/isort,gforcada/isort,levic/isort,adamchainz/isort,graingert/isort,AbsoluteMSTR/isort,pahko/isort,AbsoluteMSTR/isort,aequitas/isort,jamesbroadhead/isort,aequitas/isort,wimglenn/isort,PyCQA/isort,tomviner/isort,pahko/isort,PyCQA/isort,leepa/isort,leepa/isort,jmullan/isort,wimglenn/isort,graingert/isort,adamchainz/isort,levic/isort