1 files changed, 44 insertions, 47 deletions
diff --git a/Master/texmf-dist/tex/latex/labelcas/labelcas.sty b/Master/texmf-dist/tex/latex/labelcas/labelcas.sty
index 71dc998e541..dc542bd871d 100644
--- a/Master/texmf-dist/tex/latex/labelcas/labelcas.sty
+++ b/Master/texmf-dist/tex/latex/labelcas/labelcas.sty
@@ -20,12 +20,12 @@
 %% and version 1.3 or later is part of all distributions of LaTeX version
 %% 2003/12/01 or later.
 %% 
-\NeedsTeXFormat{LaTeX2e}[1999/12/01]
+\NeedsTeXFormat{LaTeX2e}
 \ProvidesPackage{labelcas}
-   [2006/04/27 v1.07 check label-existence and fork accordingly]
+   [2006/08/14 v1.12 check label-existence and fork accordingly]
+\begingroup
 \DeclareOption{DefineLabelcase}%
               {\global\let\DefineLabelcase\DefineLabelcase}%
-\begingroup
 \newcommand\DefineLabelcase[4]{%
   \expandafter\@ifdefinable\csname#3lc@remtrailspace\endcsname{%
     \expandafter\long
@@ -40,7 +40,17 @@
       \else
         \expandafter\@secondoftwo
       \fi
-      {\csname#3lc@remleadspace\endcsname#2##1#1#2#2}%
+      {%
+        {\toks@{##1}\edef\@tempa{\the\toks@}%
+         \toks@{#2}\edef\@tempb{\the\toks@}%
+         \expandafter}%
+        \ifx\@tempa\@tempb
+          \expandafter\@gobble
+        \else
+          \expandafter\@firstofone
+        \fi
+        {\csname#3lc@remleadspace\endcsname#2##1#1#2#2}%
+      }%
       {\csname#3lc@remtrailspace\endcsname##1#2#1#2#2#1}%
     }%
   }%
@@ -65,31 +75,20 @@
     \expandafter\long
     \expandafter\def
     \csname#3lc@iterate\endcsname##1#2{%
-      \toks@{#1}%
       \begingroup
-      \long\def\@tempa#2####1#2{\toks@{####1}\edef\@tempa{\the\toks@}}%
-      \csname#3lc@remleadspace\endcsname#2##1#2#1#2#2%
       \toks@{##1}%
-      \edef\@tempb{\the\toks@}%
+      \edef\@tempa{\the\toks@}%
       \toks@{#1\@nil}%
-      \edef\@tempc{\the\toks@}%
-      \toks@{\csname#3lc@remtrailspace\endcsname##1#2#1#2#2#1}%
-      \edef\@tempd{\the\toks@}%
-      \ifx\@tempb\@tempc
-        \expandafter\endgroup
+      \edef\@tempb{\the\toks@}%
+      \expandafter\endgroup\ifx\@tempa\@tempb
+        \expandafter\@gobble
       \else
-        \ifx\@tempa\@empty
-          \expandafter\endgroup
-        \else
-          \expandafter\expandafter
-          \expandafter            \endgroup
-          \expandafter\@tempd
-        \fi
-        \csname#3lc@iterate\expandafter\expandafter
-        \expandafter\endcsname
-        \expandafter\the
-        \expandafter\toks@
+        \expandafter\@firstofone
       \fi
+      {%
+        \csname#3lc@remtrailspace\endcsname##1#2#1#2#2#1%
+        \csname#3lc@iterate\endcsname#1%
+      }%
     }%
   }%
   \expandafter\@ifdefinable\csname#3eachlabelcase\endcsname{%
@@ -189,29 +188,27 @@
   \ifx\@tempa\@empty
   \else
     \@temptokena\expandafter{%
-      \expandafter\begingroup
-      \expandafter\toks@
-      \expandafter\expandafter
-      \expandafter            {%
-      \expandafter\expandafter
-      \expandafter            \@temptokena
-      \expandafter\expandafter
-      \expandafter            {%
-      \expandafter\the
-      \expandafter\@temptokena
-      \expandafter}%
-      \expandafter}%
-      \expandafter\@temptokena
-      \expandafter{%
-      \expandafter\@temptokena
-      \expandafter{%
-      \the\@temptokena}%
-      \@ifdefinable#1{\edef#1{\the\@temptokena}}}%
-      \expandafter\expandafter
-      \expandafter            \endgroup
-      \expandafter\the
-      \expandafter\@temptokena
-      \the\toks@
+                \expandafter\begingroup
+                \expandafter\toks@
+                \expandafter\expandafter
+                \expandafter            {%
+                \expandafter\expandafter
+                \expandafter            \@temptokena
+                \expandafter\expandafter
+                \expandafter            {%
+                \expandafter\the
+                \expandafter\@temptokena
+                \expandafter}%
+                \expandafter}%
+                \expandafter\@temptokena
+                \expandafter{%
+                \expandafter\@temptokena
+                \expandafter{%
+                \the\@temptokena}%
+                \@ifdefinable#1{\edef#1{\the\@temptokena}}}%
+                \expandafter\endgroup
+                \the\expandafter\@temptokena
+                \the\toks@
     }%
   \fi
 }%