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	["812" "Thu" "19" "June" "1997" "15:23:41" "+0100" "David Carlisle" "david@DCARLISLE.DEMON.CO.UK" nil "38" "Re: Multilingual TeX --- and a successor to TeX" "^Date:" nil nil "6" nil nil nil nil nil]
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Subject:      Re: Multilingual TeX --- and a successor to TeX
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> I expected to get the same results for these two \showbox commands.

Yes you should.

Consider the following (as long as the 8bit lines of latin-1 get
through the mail)

It produces four identical results, each looking like:
> \box0=
\hbox(8.56377+0.0)x27.21558
.\T1/cmr/m/n/10 ^^c1
.\kern-0.83313
.\T1/cmr/m/n/10 ^^dd
.\kern-0.83313
.\T1/cmr/m/n/10 ^^c1
.\kern-1.11084
.\T1/cmr/m/n/10 V



\documentclass{article}
\usepackage[latin1]{inputenc}
\usepackage[T1]{fontenc}
\showoutput

\setbox0=\hbox{\'A\'Y\'AV}                  \showbox0
\setbox0=\hbox{\MakeUppercase{\'a\'y\'av}}  \showbox0
\setbox0=\hbox{V}                        \showbox0
\setbox0=\hbox{\MakeUppercase{v}}        \showbox0


\stop


So somewhere you must have a definition that is inserting extra tokens
that are breaking the kerns.

David