[svn] What svn command would list all the files modified on a branch?

svn log -q -v shows paths and hides comments. All the paths are indented so you can search for lines starting with whitespace. Then pipe to cut and sort to tidy up:

svn log --stop-on-copy -q -v | grep '^[[:space:]]'| cut -c6- | sort -u

This gets all the paths mentioned on the branch since its branch point. Note it will list deleted and added, as well as modified files. I just used this to get the stuff I should worry about reviewing on a slightly messy branch from a new dev.