I'm not picking on anyone in particular here, just noticing that some stuff that really shouldn't have changed is quite often getting "touched" due to changes to svn:mergeinfo. For example, if I look at the revision log for boost/config.hpp in the release branch I see: Revision: 77591 Author: eric_niebler Date: 27 March 2012 20:28:30 Message: merge [77416] from trunk, fixes #6131, fixes #6455 Revision: 77589 Author: eric_niebler Date: 27 March 2012 19:53:50 Message: merge [77417],[77437],[77422],[77587] from trunk ---- Revision: 77447 Author: eric_niebler Date: 21 March 2012 04:22:38 Message: merge [77446] from trunk ---- Revision: 77420 Author: eric_niebler Date: 19 March 2012 21:33:14 Message: merge [77419] from trunk ---- Revision: 77413 Author: eric_niebler Date: 19 March 2012 20:26:44 Message: merge [77412] from trunk, fixes #6702 ---- Revision: 77411 Author: eric_niebler Date: 19 March 2012 20:07:11 Message: merge [77320] from trunk ---- Revision: 76784 Author: eric_niebler Date: 29 January 2012 21:58:13 Message: merge [76637] from trunk ---- Revision: 76536 Author: jewillco Date: 15 January 2012 23:52:45 Message: Merged r75066, r75067, r75124, r75140, r75165, r75861, r75862, r75863, r75878, r75906, r75970, r75973, r75974, and r76394 from trunk ---- Revision: 76535 Author: jewillco Date: 15 January 2012 23:32:09 Message: Merged r76050, r75547, r75891, r76049, r76083, and r76439 from trunk (reverse_graph bug fixes and fix for #6293); refs #6293 ---- Revision: 76480 Author: eric_niebler Date: 14 January 2012 05:21:11 Message: merge [76479] from trunk ---- Before finally we get to a "real" change: Revision: 76339 Author: johnmaddock Date: 07 January 2012 17:29:04 Message: Merge config changes from Trunk. ---- If we pick out the latest of the changes above we see that a huge number of files have been "touched" in this way: Revision: 77591 Author: eric_niebler Date: 27 March 2012 20:28:30 Message: merge [77416] from trunk, fixes #6131, fixes #6455 ---- Modified : /branches/release Modified : /branches/release/INSTALL Modified : /branches/release/Jamroot Modified : /branches/release/LICENSE_1_0.txt Modified : /branches/release/boost 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/branches/release/status/Jamfile.v2 Modified : /branches/release/status/expected_results.xml Modified : /branches/release/status/explicit-failures-markup.xml Modified : /branches/release/status/explicit-failures.xsd Modified : /branches/release/tools Modified : /branches/release/tools/bcp Modified : /branches/release/tools/boostbook Modified : /branches/release/tools/build/v2 Modified : /branches/release/tools/build/v2/tools/mpi.jam Modified : /branches/release/tools/inspect Modified : /branches/release/tools/quickbook Modified : /branches/release/tools/regression Modified : /branches/release/tools/regression/src/library_status.cpp Modified : /branches/release/tools/release Modified : /branches/release/tools/wave As well as cluttering up the revision logs, this often leads to property and/or tree conflicts when merging your own stuff, and I can't tell you how annoying that is to figure out! :-( BTW, my sincere apologies to Eric here - he just happened to be the latest culprit - can some SVN guru suggest how to prevent this sort of spurious changing going on? BTW2, lest this turn into "my extra advanced version control system doesn't do messy stuff like this" conversation - I'm sure you're correct - some other version control system probably doesn't have this trap - but I sure bet it has other traps just as annoying for the unwary. Just saying.... Thanks, John.