title: Vim gF should open file and jump to line
body: <p>I tried out <code>gF</code> and it seems to not behave like mentioned in <code>:help gF</code></p>
  
  <p>If cursor is positioned on an entry <code>x.c</code> and I type <code>gf</code> the file is opened.</p>
  
  <p>If cursor is positioned on an entry <code>x.c:3</code> and I type <code>gF</code> I get <code>E447: Can't find file "x.c:3" in path</code>. Whereby :3 should tell vim to jump to line 3.</p>
  
  <p>What do I miss?</p>