/usr/share/common-lisp/ is in cl-flexi-streams 1.0.7-2.
This file is owned by root:root, with mode 0o755.
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/usr/share/common-lisp/source/
/usr/share/common-lisp/source/cl-flexi-streams/
/usr/share/common-lisp/source/cl-flexi-streams/ascii.lisp
/usr/share/common-lisp/source/cl-flexi-streams/code-pages.lisp
/usr/share/common-lisp/source/cl-flexi-streams/conditions.lisp
/usr/share/common-lisp/source/cl-flexi-streams/decode.lisp
/usr/share/common-lisp/source/cl-flexi-streams/encode.lisp
/usr/share/common-lisp/source/cl-flexi-streams/external-format.lisp
/usr/share/common-lisp/source/cl-flexi-streams/flexi-streams.asd
/usr/share/common-lisp/source/cl-flexi-streams/in-memory.lisp
/usr/share/common-lisp/source/cl-flexi-streams/input.lisp
/usr/share/common-lisp/source/cl-flexi-streams/io.lisp
/usr/share/common-lisp/source/cl-flexi-streams/iso-8859.lisp
/usr/share/common-lisp/source/cl-flexi-streams/koi8-r.lisp
/usr/share/common-lisp/source/cl-flexi-streams/length.lisp
/usr/share/common-lisp/source/cl-flexi-streams/lw-char-stream.lisp
/usr/share/common-lisp/source/cl-flexi-streams/mapping.lisp
/usr/share/common-lisp/source/cl-flexi-streams/output.lisp
/usr/share/common-lisp/source/cl-flexi-streams/packages.lisp
/usr/share/common-lisp/source/cl-flexi-streams/specials.lisp
/usr/share/common-lisp/source/cl-flexi-streams/stream.lisp
/usr/share/common-lisp/source/cl-flexi-streams/strings.lisp
/usr/share/common-lisp/source/cl-flexi-streams/util.lisp
/usr/share/common-lisp/systems/
/usr/share/common-lisp/systems/flexi-streams.asd