Revision history of "an empty string is not a natural number" (Z13498)

Ebyokugerageranizibwa: nyiga obutonnyeze ku likooda zoyagala okugerageranya olyoke onyige eppeesa erya 'Enter'
oba ku gano agali ku lupapula luno.
Ebigambo: (erw) = enjawulo ku ebiriwo, (eku) = enjawulo ku egikulembera, N = enkyukakyuka entono.