Detect collision with specific object name?

I wish to create a script that triggers an event on collision -- simple enough, except I wish the script to react ONLY when it encounters a specific object name. I must be doing something wrong, because every attempt to rewrite the simple collision_start script results in an error. Could someone provide me with a rudimentary example of how this might be done?

Or, for less rigid requirements:

// Only call this from a collision* event handler; it uses llDetected*() functions.
integer matchesMyCollisionCriteria(integer detectIndex)
{
   // Whatever you want, really, but here's an example:
   return (llSubStringIndex(llToLower(llDetectedName(detectIndex)), "fruit") >= 0);
}

default
{
   collition_start(integer nDetected)
   {
      integer i;
      for (i = 0; i < nDetected; ++i)
      {
         if (matchesMyCollisionCriteria(i))
         {
            // Do something interesting with fruit, fruit substitute, or fruit-flavored gunk.... ;-)
         }
      }
   }
}