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Csh has a major logical fault with the breaksw statment.
If breaksw appears on a line as a command any commands before it on
the line will NOT be executed.

   switch( $HOST )
     case kurango:
       cat /etc/motd; breaksw
   endsw

will NOT print the message of the day file, while

   switch( $HOST )
     case kurango:
       cat /etc/motd
       breaksw
   endsw

will work as expected.

(  Standard csh on a Sun4 Sparc Server running SunOs 4.1.3 )

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Csh Question (to a compiler class)

Did you know that typing
    !xxx%s%s%s%s%s%s%s%s
to any C-shell will cause it to crash immediately? Do you know why?

Questions to think about:
  * What does the shell do when you type "!xxx" ?
  * What must it be doing with your input when you type
     "!xxx%s%s%s%s%s%s%s%s"?
  * Why does this crash the shell?
  * How could you (rather easily) rewrite the offending part of the shell
    so as not to have this problem?

  MOST IMPORTANTLY:
  * Does it seem reasonable that you (yes you!) can bring what may be
    the Future Operating System of the World to its knees in 21 keystokes?

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