Avoid picking '\0' in examples.
Avoid picking '\0' in examples.

Now, we only pick '\0' as the example character for a transition if it is
the only char for that transition.

bkearney/augeas,domcleal/augeas,kumy/augeas,camptocamp/augeas,bkearney/augeas,hercules-team/augeas-do-not-use,bkearney/augeas,bkearney/augeas,pevalme/augeas,mchf/augeas,GeoffWilliams/augeas,jjlin/augeas,jtopjian/augeas,GeoffWilliams/augeas,jjlin/augeas,mlichvar/augeas,ptoscano/augeas,dafugg/augeas,jasperla/augeas,kumy/augeas,raphink/augeas,domcleal/augeas,mlichvar/augeas,lutter/augeas,kumy/augeas,kumy/augeas,MikaelSmith/augeas,domcleal/augeas,raphink/augeas,camptocamp/augeas,jtopjian/augeas,ptoscano/augeas,pevalme/augeas,hercules-team/augeas-do-not-use,kunkku/augeas,dafugg/augeas,manandbytes/augeas,lutter/augeas,camptocamp/augeas,kunkku/augeas,dafugg/augeas,hercules-team/augeas,pevalme/augeas,kunkku/augeas,MikaelSmith/augeas,jjlin/augeas,jasperla/augeas,mchf/augeas,lutter/augeas,mlichvar/augeas,ptoscano/augeas,manandbytes/augeas,hercules-team/augeas,camptocamp/augeas,hercules-team/augeas-do-not-use