URL之间的SVN复制失败

我想在SVN 1.7上创建一个标签.

尝试时: svn copy svn://svn-rep.domain/dev/trunk svn://svn-rep.domain/dev/tags/product

我收到以下错误: svn: E205007: Could not use external editor to fetch log message; consider setting the $SVN_EDITOR environment variable or using the --message (-m) or --file (-F) options svn: E205007: None of the environment variables SVN_EDITOR, VISUAL or EDITOR are set, and no 'editor-cmd' run-time configuration option was found

并在添加消息时: svn copy svn://svn-rep.domain/dev/trunk svn://svn-rep.domain/dev/tags/product -m 'message'

我收到此错误: svn: E205009: Local, non-commit operations do not take a log message or revision properties

我究竟做错了什么？