Hi, Issue SVN-1778 [1] is about the Python bindings, class FileDiff, where get_pipe() called an external program diff (under Windows: diff.exe). Since diff.exe has to be installed (and added to PATH) manually on Windows the function would fail. The same is true on other os:es but diff is probably more commonly present by default.
r1824410 added support for running the internal Subversion diff functions (svn.diff.file_diff_2 and svn.diff.file_output_unified4) as long as the argument diffoptions is None (the default). Since diffoptions is passed as arguments to the diff command, it seems reasonable to require the presence of diff (or diff.exe) if one uses diffoptions. I'm suggesting to close this issue - it is not completely solved but when using diffoptions,it is probably expected that this arguments is passed on to whatever diff/diff.exe executable is present on the system and thus it is not unreasonable to require the end user to install diff.exe Kind regards, Daniel Sahlberg [1] https://issues.apache.org/jira/browse/SVN-1778
