ref: ba015c9f454db4964c119b5949ab236034ff3b92 dir: /src/execfs/builds/rules/
/index.html /cfg/$sysname/src/execfs/builds/index.rc /man2html/([0-9])/([a-zA-Z0-9\.]+) troff -manhtml /usr/build/code/plan9front/sys/man/\1/\2 | troff2html -t '\2(\1)'