brp-compress uncompresses man files by extension, but then tries to compress them using 'file' utility for man detection. in java-1.6.0-sun most of the man pages are not recognized by 'file': $ file jdk1.6.0/man/man1/appletviewer.1 jdk1.6.0/man/man1/appletviewer.1: ASCII English text, with very long lines As a result, those files will not be compressed. It is suggested either to use 'ASCII English text, with very long lines' as an additional man page type or to use compression by extension.
sun proprietary... не уверен, есть ли у меня права на модиффикацию.. я уже зафиксил, %set_compress_method none и руками.