ChangeLog: https://github.com/kdeguchi/pkg_replace/releases
* Enabled to handle locked packages with new "-U" option. If "-U" option is not
present, locked packages are skipped. See pkg_replace(1).
* Variables containing file and directory are enclosed in double quotes.
* Fix trap action.
* Cleanup code.
PR: 269043
Reported by: kdeguchi@sz.tokoha-u.ac.jp (maintainer)