ARG_CHECK errors when condition is met. Invert conditions in aug_to_xml.
ARG_CHECK errors when condition is met. Invert conditions in aug_to_xml.

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