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-rw-r--r--Master/texmf-dist/tex/generic/oberdiek/ltxcmds.sty33
1 files changed, 23 insertions, 10 deletions
diff --git a/Master/texmf-dist/tex/generic/oberdiek/ltxcmds.sty b/Master/texmf-dist/tex/generic/oberdiek/ltxcmds.sty
index 9917a775167..bad9656fd11 100644
--- a/Master/texmf-dist/tex/generic/oberdiek/ltxcmds.sty
+++ b/Master/texmf-dist/tex/generic/oberdiek/ltxcmds.sty
@@ -87,7 +87,7 @@
\fi
\expandafter\x\csname ver@ltxcmds.sty\endcsname
\ProvidesPackage{ltxcmds}%
- [2009/08/05 v1.0 Some LaTeX kernel commands for general use (HO)]
+ [2009/12/12 v1.1 LaTeX kernel commands for general use (HO)]
\begingroup
\catcode123 1 % {
\catcode125 2 % }
@@ -136,8 +136,14 @@
\lowercase{\endgroup
\def\ltx@backslashchar{0}%
}
-\begingroup\expandafter\expandafter\expandafter\endgroup
-\expandafter\ifx\csname ifcsname\endcsname\relax
+\def\ltx@LocalExpandAfter{%
+ \begingroup
+ \expandafter\expandafter\expandafter
+ \endgroup
+ \expandafter
+}
+\ltx@LocalExpandAfter
+\ifx\csname ifcsname\endcsname\relax
\def\ltx@ifundefined#1{%
\expandafter\ifx\csname #1\endcsname\relax
\expandafter\ltx@firstoftwo
@@ -145,6 +151,14 @@
\expandafter\ltx@secondoftwo
\fi
}%
+ \def\ltx@IfUndefined#1{%
+ \begingroup\expandafter\expandafter\expandafter\endgroup
+ \expandafter\ifx\csname #1\endcsname\relax
+ \expandafter\ltx@firstoftwo
+ \else
+ \expandafter\ltx@secondoftwo
+ \fi
+ }%
\expandafter\ltx@gobble
\else
\expandafter\ltx@firstofone
@@ -152,17 +166,16 @@
{%
\def\ltx@ifundefined#1{%
\ifcsname #1\endcsname
- \expandafter\ltx@secondoftwo
+ \expandafter\ifx\csname #1\endcsname\relax
+ \expandafter\expandafter\expandafter\ltx@firstoftwo
+ \else
+ \expandafter\expandafter\expandafter\ltx@secondoftwo
+ \fi
\else
\expandafter\ltx@firstoftwo
\fi
}%
-}
-\def\ltx@LocalExpandAfter{%
- \begingroup
- \expandafter\expandafter\expandafter
- \endgroup
- \expandafter
+ \let\ltx@IfUndefined\ltx@ifundefined
}
\ltx@AtEnd
\endinput