Undocumented capabilities

svn_ra_svn.h defines these capabilities (as of 1.11): #define SVN_RA_SVN_CAP_EDIT_PIPELINE "edit-pipeline" #define SVN_RA_SVN_CAP_SVNDIFF1 "svndiff1" #define SVN_RA_SVN_CAP_SVNDIFF2_ACCEPTED "accepts-svndiff2" #define SVN_RA_SVN_CAP_ABSENT_ENTRIES "absent-entries" #define SVN_RA_SVN_CAP_COMMIT_REV

svnserve protocol documentation doesn't explain what svndiff2 is

Aye! We're implementing svnserve-compatible server and noticed recent addition of 'accepts-svndiff2' capability. However, nothing is docs [1] describes what is "svndiff2 deltas". [1]: https://svn.apache.org/viewvc/subversion/trunk/subversion/libsvn_ra_svn/ protocol?revision=1818581&view=markup#