Merging from trunk to a branch
Merging from trunk to a branch is done with the following commands:
cd [path/to/my/branch/copy] make sure it is clean and up to date run: svn merge -r [first revision to be merged]:[last revision to be merged] svn+ssh://email@example.com/svnroot/repos/codeblocks/trunk . (note the trailing dot [with a blank before it]) commit changes with comment "* my_branch: merged with trunk (trunk to my_branch)"
The first revision to be merged is normally the revision of the last merge, the last revision to be merged is normally HEAD, the url has to be fixed to fit your needs. Instead of the url you can use the root-folder of your working-copy of trunk. Instead of the trailing dot you can use the path to your working copy of the my-branch (if you are not inside its root-folder). To see what will be merged (instead of really doing it), you can use "--dry-run" as for many other svn commands.
Never mix changes from a merge with pending changes from the branch. This will result in an immediate loss of the ability to do a SVN re-integrate merge as SVN will never be able to resolve the changes.