[cvs-nhc98] patch applied (hat): Fix two bugs in hat-trail' s help text when using a short terminal window.

[Malcolm Wallace]

Wed Feb 26 08:59:33 PST 2003  malcolm
  * Fix two bugs in hat-trail's help text when using a short terminal window.
    * Invoking :h from the initial "output/error" selection panes, the help
      text scrolls over the upper panes, and the display is corrupted on return.
    * Invoking :h later, the help text scrolls out of view behind the upper
      panes, and there is no way of knowing (a) that it has done so, and (b)
      what the hidden text says.
  The solution is to implement a simple 'more'-style viewer that adapts to
  the exact height of the lower (trail) pane.

    M ./src/hattools/HatTrail.hs -6 +20