B2Uconverter is a necessary libreoffice's extension for converting old Vietnamese encoding to unicode. Using this should help standardize charsets in Vietnamese language community. Reproducible: Always I've already made an ebuild in my personal overlay (user/gentoo-vn)
https://gitweb.gentoo.org/user/gentoo-vn.git/log/app-office/b2uconverter last updated 2012 https://github.com/myguidingstar/B2Uconverter https://extensions.libreoffice.org/en/extensions/show/b2uconverter last updated 2013, Compatible with LibreOffice 4.x maybe obsolete since 2014 https://github.com/LibreOffice/core/commit/c72305d1d855ace5ea1d46892576851644236a7d " add fallback encodings for Thai and Vietnamese " Hoang Minh Thang, can this be closed?
