From 119f9200692c21adf31c28a35a4ed45fef6e3826 Mon Sep 17 00:00:00 2001
From: mirabilos <m@mirbsd.org>
Date: Sun, 5 Aug 2018 05:01:27 +0200
Subject: [PATCH] show _which_ byte string is wrong, in hex
---
unicodedomino.sty | 15 +++++++++++++--
1 file changed, 13 insertions(+), 2 deletions(-)
diff --git a/unicodedomino.sty b/unicodedomino.sty
index 3b4d13f..fb5cb8d 100644
--- a/unicodedomino.sty
+++ b/unicodedomino.sty
@@ -120,6 +120,15 @@
\the\numexpr\decode@UTFviii#2\relax})%
}%
+% for invalid encoding output
+\gdef\unicodedomino@splith@x#1#2\relax{%
+ \space 0x\UTFviii@hexnumber{`#1}%
+ \ifx\relax#2\relax\else\unicodedomino@splith@x#2\relax\fi%
+}%
+\gdef\unicodedomino@splithex#1:#2\relax{%
+ \unicodedomino@splith@x#2\relax%
+}%
+
% render the actual domino piece
\def\unicodedomino@box#1#2{%
\begingroup%
@@ -214,8 +223,10 @@
\fi%
\else%
% invalid encoding
- \PackageError{inputenc}{Invalid UTF-8 byte sequence}%
- {Do ensure the source document is saved in UTF-8 encoding.}%
+ \PackageError{inputenc}{%
+ Invalid\space UTF-8\space byte\space sequence:%
+ \expandafter\unicodedomino@splithex\string#1\relax%
+ }{Do ensure the source document is saved in UTF-8 encoding.}%
\fi%
\else%
% known char, expand
--
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