There are a few questions related to this on SO, as well as several bug reports sprinkled throughout google searches, but --new-file or -force or --notice-ancestry has not worked for me.
The file is NOT binary and I'd like something of the form to work:
svn diff -r XXXXXX TestHelloWorld.java
where TestHelloWorld.java is an added file. Currently I get an "unable to find repo location..." and I've checked the revision numbers several times (I can get merge changes to show correctly)
Any ideas?