<oerjan> le/rn scowrevs///hackenv/share/scowrevs is a list of repository revision ranges that affected a lot of files but in the end changed nothing (usually because of a revert at the end). Most of our custom repository lookup commands ignore these to reduce noise.

sep='//`'
[[ "$1" == ?*"$sep"* ]] || { echo 'Usage: `# <comment>'"$sep"'<command>' >&2 ; exit 1; }
nur "${1#*$sep}"