Show all invalid chars (rancher/rancher#1175)
Show all invalid chars (rancher/rancher#1175)

pengjiang80/ui,vincent99/ui,vincent99/ui,rancherio/ui,rancher/ui,lvuch/ui,pengjiang80/ui,westlywright/ui,pengjiang80/ui,rancher/ui,vincent99/ui,lvuch/ui,nrvale0/ui,rancherio/ui,nrvale0/ui,rancherio/ui,lvuch/ui,rancher/ui,nrvale0/ui,westlywright/ui,westlywright/ui