File list of package php7.3-readline in buster of architecture amd64
/usr/lib/php/20180731/readline.so /usr/share/bug/php7.3-readline/control /usr/share/bug/php7.3-readline/script /usr/share/doc/php7.3-readline /usr/share/lintian/overrides/php7.3-readline /usr/share/php7.3-readline/readline/readline.ini