title: interacting with running svn process in emacs (win32)
body: <p>When trying to commit changes in emacs (win32) and svn (vc mode) I got:</p>
  
  <pre><code>Error validating server certificate for ...:
  - The certificate is not issued by a trusted authority. Use the
   fingerprint to validate the certificate manually!
  ...
  (R)eject, accept (t)emporarily or accept (p)ermanently?  
  </code></pre>
  
  <p>That's OK, but how can I answer the question? When I press 'p' I got "No previous log message" line in minibuf. How to interact in emacs with running svn process?</p>