There is a lot of effort and hacks on determining what SVN database version is being used on the working copy. Usually resorting to examining the internal contents of a .svn/* file.
For future releases it would be nice if there was a command to display if the current working copy is at the same level as the svn version being used, and if not if it is upgradable. The use case is to be able to detect early on in a build process if the wrong version of SVN was used. Examples: svn upgrade --check . CURRENT: yes UPGRADABLE: yes VERSION: 20 exit code 0 to indicate upgradable, which should be a no-op svn upgrade --check . CURRENT: no UPGRADABLE: yes VERSION: 19 exit code 0 to indicate upgradable svn upgrade --check . CURRENT: no UPGRADABLE: no VERSION: unknown exit code non-zero to indicate not upgradable svn upgrade --check-current . CURRENT: yes UPGRADABLE: yes VERSION: 20 exit code 0 to indicate no upgrade is needed svn upgrade --check-current . CURRENT: NO UPGRADABLE: yes VERSION: 19 exit code 1 to indicate upgrade is needed svn upgrade --check-current . CURRENT: NO UPGRADABLE: no VERSION: unknown exit code 2 to indicate upgrade cannot be performed
