restricted system commands enabled.
(./context-ctrl-chars.tex
! Undefined control sequence.
\a ->x^^Q^^A\undefined
yy
l.3 \def\a{x^^Q^^A\undefined yy}\a
! Use of \b doesn't match its definition.
l.4 \def\b#1{#1\undefined}\b{
^^Q^^Qz}
! Too many }'s.
l.4 \def\b#1{#1\undefined}\b{^^Q^^Qz}
! Undefined control sequence.
l.5 ab^^A^^Ac\undefined
d^^Ae
! Undefined control sequence.
l.6 \message{^^Q^^Q\undefined
}
^^Q^^Q
! a^^Qb.
l.7 \errmessage{a^^Qb}
[0])
(see the transcript file for additional information)
Output written on context-ctrl-chars.dvi (1 page, 132 bytes).
Transcript written on context-ctrl-chars.log.