use POSIXLY_CORRECT to parse nested options correctly
use POSIXLY_CORRECT to parse nested options correctly

dstrctrng/definition-distro,dstrctrng/definition-quantal,dstrctrng/johnny,dstrctrng/definition-osx,dstrctrng/definition-precise,dstrctrng/definition-devx,dstrctrng/home,dstrctrng/definition-basebox,dstrctrng/pancake_osx,dstrctrng/tvd-unicorn,dstrctrng/home,dstrctrng/pancake_osx,dstrctrng/definition-generic,dstrctrng/definition-lucid,dstrctrng/pancake_osx,dstrctrng/johnny,dstrctrng/pancake_osx,dstrctrng/tvd-runit,dstrctrng/definition-generic,dstrctrng/definition-osx,dstrctrng/definition-quantal,dstrctrng/alpha_omega,dstrctrng/definition-devx,dstrctrng/johnny,dstrctrng/definition-precise,dstrctrng/tvd-runit,dstrctrng/home,dstrctrng/tvd-unicorn,dstrctrng/definition-basebox,dstrctrng/definition-distro,dstrctrng/alpha_omega,dstrctrng/definition-lucid,defn/junas