title: Commit failed error when committing new version to svn repository
body: <p>I'm trying to commit a new version to my SVN repository but am met with this error:</p>
  
  <blockquote>
    <p>svn: Commit failed (details follow):<br>
    svn: Could not use external editor to fetch log message; consider setting the $SVN_EDITOR environment variable or using the --message (-m) or --file (-F) options<br>
    svn: None of the environment variables SVN_EDITOR, VISUAL or EDITOR are set, and no 'editor-cmd' run-time configuration option was found
    new-computers-computer:trunk newcomputer$ </p>
  </blockquote>
  
  <p>What's wrong?</p>