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I've been using various source control systems for a while, but when it comes to reverting changes I'm not yet an expert. Can someone help given this scenario:
I expect there must be a way to compare revisions #4 and #5 of the two files and generate a patch that undoes the changes in revision #5, which can then be applied to the HEAD revision to roll-back the defect.
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Right click on the selected revision(s), then select Context Menu → Revert changes from this revision. Or if you want to make an earlier revision the new HEAD revision, right click on the selected revision, then select Context Menu → Revert to this revision. This will discard all changes after the selected revision.
If you want to undo all changes you made in a file since the last update you need to select the file, right click to pop up the context menu and then select the command TortoiseSVN → Revert A dialog will pop up showing you the files that you've changed and can revert.
To revert a single commit: Go to: Subversion -> Integrate Directory... Show activity on this post. Note that the svn merge command reverts a commit in the sense of having another commit undoing your changes, but keeping your wrong commit in the history.
Usually a reverse merge will be sufficient to roll back a committed changes...
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To read up on the details see: svn manual - Undoing Changes
As described by mark you'll want to do:
svn merge -r 5:4 file1 file2
This means merge in the change from 4 to 5 backwards ie. undo the changes
You could also type:
svn merge -c -5 file1 file2
This means apply the change that took place in commiting revision 5 backwards.
Next you should manually review the changes.
Finally you must commit the changes (above merges only changed your working copy).
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