ref: e391b7ec8c0dc746a70725f3fc598def0419d1e6
dir: /rc/bin/rc-httpd/handlers/static-or-cgi/
#!/bin/rc cgiargs=$* fn error{ if(~ $1 404) exec cgi $cgiargs if not $rc_httpd_dir/handlers/error $1 } if(~ $location */) exec cgi $cgiargs if not exec serve-static