`make clean` in doc/ja_JP.eucJP/htdocs/ports does not cleanup the generated *.xml files, only the *.html files.
ja_JP.eucJP/htdocs/ports/Makefile.inc0 use the standard english include Makefiles. However, the include path is wrong: "../../en/ports/Makefile.inc" it should be "../../../en_US.ISO8859-1/htdocs/ports/Makefile.inc"
A commit references this bug: Author: wosch Date: Thu Sep 28 16:53:43 UTC 2017 New revision: 50950 URL: https://svnweb.freebsd.org/changeset/doc/50950 Log: fix include of Makefiles: cleanup *.xml files as well PR: 222668 Changes: head/ja_JP.eucJP/htdocs/ports/Makefile.inc0