bugfix: len should be decremented by n not offset
bugfix: len should be decremented by n not offset

jbalint/bspwm,netzverweigerer/bspwm,netzverweigerer/bspwm,nfnty/bspwm,ikn/bspwm,JBouron/bspwm,baskerville/bspwm,nfnty/bspwm,Stebalien/bspwm,Stebalien/bspwm,jbalint/bspwm,JBouron/bspwm,0re5ama/bspwm,0re5ama/bspwm,ikn/bspwm,medisun/bspwm,XiKuuKy/bspwm,0re5ama/bspwm,jbalint/bspwm,medisun/bspwm,XiKuuKy/bspwm,medisun/bspwm,nfnty/bspwm,baskerville/bspwm,JBouron/bspwm