[Tcsh] change in head/tail handling in tcsh-6.22.03

[Nelson H. F. Beebe]

A colleague reported a change in behavior of the head/tail
modifiers in tcsh after I upgraded our systems to tcsh-6.22.03
three days ago.  We always keep old versions around, so that we
can easily do a rollback.  Here is a demo of the change:

	% tcsh-6.22.02
	1 home> set arg=ls
	2 home> echo $arg
	ls
	3 home> echo $arg:h
	ls
	4 home> echo $arg:t
	ls

	% tcsh-6.22.03
	1 home> set arg=ls
	2 home> echo $arg
	ls
	3 home> echo $arg:h

	4 home> echo $arg:t
	ls

Is this a bug, or a `feature'?

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- University of Utah                    FAX: +1 801 581 4148                  -
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