From 1ecf8b73c2570794c61fc9773c79a9b8b76c4567 Mon Sep 17 00:00:00 2001
From: Karl Berry <karl@freefriends.org>
Date: Fri, 21 Dec 2012 17:23:38 +0000
Subject: manual update of enctex files in csplain.tar.gz

git-svn-id: svn://tug.org/texlive/trunk@28601 c570f23f-e606-0410-a88d-b1316a301751
---
 Master/texmf-dist/tex/generic/enctex/utf8unkn.tex | 56 +++++++++++++++++------
 1 file changed, 42 insertions(+), 14 deletions(-)

(limited to 'Master/texmf-dist/tex')

diff --git a/Master/texmf-dist/tex/generic/enctex/utf8unkn.tex b/Master/texmf-dist/tex/generic/enctex/utf8unkn.tex
index 462a23acbaf..88a9027906c 100644
--- a/Master/texmf-dist/tex/generic/enctex/utf8unkn.tex
+++ b/Master/texmf-dist/tex/generic/enctex/utf8unkn.tex
@@ -2,6 +2,8 @@
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 % Feb. 6. 2003                                            Petr Olsak
 %
+% Oct. 2012: More robust macros by \long, \noexpand, \badutfinput (P.O.)
+%
 % This macro sets all others UTF-8 codes (not declared formerly or
 % later) as "unknown" by encTeX primitives. You need the version 
 % Feb. 2003 of encTeX or later.
@@ -13,7 +15,7 @@
 
 \def\setunknowncodes {\bgroup
    \def\a ##1{\mubyte \warntwobytes ####2 ##1\endmubyte}
-   \a ^^c0 \a ^^c1 \a ^^c2 \a ^^c3 \a ^^c4 \a ^^c5 \a ^^c6 \a ^^c7 
+   \a ^^c2 \a ^^c3 \a ^^c4 \a ^^c5 \a ^^c6 \a ^^c7 
    \a ^^c8 \a ^^c9 \a ^^ca \a ^^cb \a ^^cc \a ^^cd \a ^^ce \a ^^cf 
    \a ^^d0 \a ^^d1 \a ^^d2 \a ^^d3 \a ^^d4 \a ^^d5 \a ^^d6 \a ^^d7 
    \a ^^d8 \a ^^d9 \a ^^da \a ^^db \a ^^dc \a ^^dd \a ^^de \a ^^df 
@@ -24,20 +26,48 @@
 
 \mubyte \writeparameter \relax \endmubyte \def\writeparameter{}
 
-\def\warntwobytes #1#2{%
+\long\def\warntwobytes #1#2{%
    \ifx\writeparameter\relax % write parameter copies unknown code
-     \noconvert#1\noconvert#2% to output without any change
+     \expandafter\noconvert\noexpand#1%
+     \expandafter\noconvert\noexpand#2% to output without any change
    \else 
-      \message{WARNING: unknown UTF-8 code: ``\noconvert#1\noconvert#2''}%
-      \leavevmode\hbox{\vrule width.5em height.5em}%
-   \fi}
-\def\warnthreebytes #1#2#3{\ifx\writeparameter\relax 
-     \noconvert#1\noconvert#2\noconvert#3%
+     \if\noexpand#2\relax \badutfinput \else
+     \ifnum`#2<128 \badutfinput \else 
+     \missingutfchar{\expandafter\noconvert\noexpand#1%
+                     \expandafter\noconvert\noexpand#2}%
+   \fi\fi\fi}
+\long\def\warnthreebytes #1#2#3{\ifx\writeparameter\relax 
+     \expandafter\noconvert\noexpand#1%
+     \expandafter\noconvert\noexpand#2%
+     \expandafter\noconvert\noexpand#3%
    \else 
-      \message{WARNING: unknown UTF-8 code: 
-         ``\noconvert#1\noconvert#2\noconvert#3''}%
-      \leavevmode\hbox{\vrule width.5em height.5em}%
-   \fi}
+     \if\noexpand#2\relax \badutfinput \else
+     \ifnum`#2<128 \badutfinput \else
+       \missingutfchar{\expandafter\noconvert\noexpand#1%
+                       \expandafter\noconvert\noexpand#2%
+                       \expandafter\noconvert\noexpand#3}%
+   \fi\fi\fi}
+\def\badutfinput{%
+   \errhelp={Try to set mubytein=0 or input utf8off or input mixcodes.}
+   \errmessage{UTF-8 INPUT IS CORRUPTED !
+               \space May be you are using another input encoding}}
+\def\missingutfchar#1{{\day=0
+   \ifnum\day=0 % this makes me more robust in message prameter
+     \newlinechar=`^^J \chardef\$=\xprncode255
+     \xprncodes=1 \message{WARNING: unknown UTF-8 code: `#1 =}%
+     \xprncodes=0 \message{#1' (line: \the\inputlineno)}%
+     \xprncodes=\$
+     \leavevmode\hbox{\kern.05em\vrule width.5em height.5em\kern.05em}%
+   \else unknown UTF-8 code `#1'\fi}}
+
+% \xprncodes=1 or \xprncodes=0 .. set/unset printability of 128..255 chars
+
+\def\xprncodes=#1 {%
+  \count255=128
+  \loop \xprncode\count255=#1\advance\count255 by 1
+  \ifnum \count255<256 \repeat
+}
+
 
 \ifx\unknowncodes\relax \endinput \fi  % you can \let\unknowncodes\relax
                                        % if you don't want to active
@@ -45,5 +75,3 @@
 \setunknowncodes
 
 \endinput
-
-
-- 
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