Attached is a script which surprised me when I tested it.  When run with
DEBUG=0, the output is as I would expect.  When run with DEBUG=1, the
for loop sets ${each} to "continue:" after the debugging code executes. 
Is this a problem with my nubile scripting skills or does this signify a
problem with zsh?  Please cc responses to ken at smith.net as I am not a
subscriber of the zsh-workers mailing list.

Thank you for any tips.