I've filed http://subversion.tigris.org/issues/show_bug.cgi?id=4505 to track this.
Julian Foad wrote on Mon, May 19, 2014 at 17:53:19 +0100: > Branko Čibej wrote: > > On 19.05.2014 13:30, Daniel Shahaf wrote: > >> Because I assumed it would error, realized it didn't, and digging into > >> the history revealed that it was probably an unintentional omission. > [...] > >> I hadn't checked 'svn propget versioned_prop'. It makes sense to me that > >> it > >> should error out on non-existing properties. Would that be a reasonable > >> course > >> to take? Or does anyone prefer to retain the pre-r1592724 behaviour? > > > > Didn't we spend time making sure that recursive operations do /not/ > > error out in such cases? > > That sounds possible. > > Another thought: what is the impact on the XML output mode? That's a more > important API, and I haven't reviewed the impact at all. > > - Julian