<elliott> addquote <Bike> oh my, this is a photo of an elliott fisting [...] <Bike> i meant elephant <Bike> but you know what, ok. <kmc> Bike: ... <kmc> Bike: can you send me that picture when i\'m not at work ok <kmc> plz and thx

#!/bin/sh
count () {
    hg log --template '{desc}\n' |
    egrep '<[^]]*> karma\'$1 |
    fgrep -vix "<$2> karma$1 $2" |
    cut -d' ' -f3 |
    fgrep -cix "$2"
}
plus=$(count + "$1")
minus=$(count - "$1")
echo $(($plus-$minus))