### Bug Description If a complex shell command is used in a part plugin parameter, the result may be misquoted and nonfunctional. ### To Reproduce Use the following parts definition in a craft project: ``` parts: p1: plugin: autotools autotools-configure-parameters: - prefix=/usr - $(dpkg-buildflags --export cmdline) ``` ### part yaml ```shell ``` ### Relevant log output ```shell :: + '[' '!' -f ./configure ']' :: ++ dpkg-buildflags --export cmdline :: dpkg-buildflags: error: unknown option 'cmdline' :: :: Use --help for program usage information. ```