title: is there a way to specify custom init file on emacs startup?
body: <p>I've tried <code>runemacs --user d:\path\to\init\.emacs</code> but it gives</p>
  
  <p><code>Error (initialization): Invalid user name d:\path\to\init\.emacs</code></p>
  
  <p>I mean custom file in custom location like on my pendrive etc. and not in my default locations in user folder. I try to create a cmd files with corresponding inits for different configuration.</p>