[SVN] r11416 (Subversion (Interactive Input))

[Luke Daley]

• Don't show the output of `svn diff` if an external diff tool is used that doesn't return the diff (e.g. Changes.app)

The way we determine that is has happened is by looking for only 2 lines of output from the invocation of `svn diff`. Svn prepends this to every diff even if the external diff command returns nothing so it seems a safe bet.

Changed:
U   branches/Subversion (Interactive Input).tmbundle/Support/bin/diff.rb