stackengine (16nov13)

git-svn-id: svn://tug.org/texlive/trunk@32166 c570f23f-e606-0410-a88d-b1316a301751

3 files changed, 24 insertions, 13 deletions

diff --git a/Master/texmf-dist/doc/latex/stackengine/stackengine.pdf b/Master/texmf-dist/doc/latex/stackengine/stackengine.pdf
index b1859d14e06..5a13c17edc4 100644
--- a/Master/texmf-dist/doc/latex/stackengine/stackengine.pdf
+++ b/Master/texmf-dist/doc/latex/stackengine/stackengine.pdf
diff --git a/Master/texmf-dist/doc/latex/stackengine/stackengine.tex b/Master/texmf-dist/doc/latex/stackengine/stackengine.tex
index c9772b1a514..181f1ad4faa 100644
--- a/Master/texmf-dist/doc/latex/stackengine/stackengine.tex
+++ b/Master/texmf-dist/doc/latex/stackengine/stackengine.tex
@@ -292,7 +292,11 @@ though any character will work.  There is a package option
 option} which sets the end-of-line symbol to be used when parsing stack
 arguments to \vb|\\|.  When the stacking EOL is something other than a
 space token, leading and trailing spaces are ignored in the row data for
-the four cited stacking commands.
+the four cited stacking commands, as well as their derivatives 
+\vb|\Centerstack| and \vb|\Vectorstack|.  (Note: other stacking commands
+in the \vb|\stackon| / \vb|\stackunder| family will not ignore, but
+retain spaces in their arguments, since there is no issue associated
+with EOL seperators.)
 
 Note that these five mode-setting commands are not themselves parameters
 to be part of a {\ste} argument, but are instead to be issued as separate
@@ -1394,14 +1398,6 @@ overcome this behavior, the stackgap must be redefined at the new
 fontsize, or better still, \vb|[oldsyntax]| usage needs to be
 relegated.
 
-Additionally,\margcmd{usepackage\{calc\}} V3.22 officially removed its
-reliance upon and any reference to the \textsf{calc} package (instead
-opting to use features of the \textsf{etoolbox} package).  If any of
-your older source code that loaded {\ste} relied on features of the
-\textsf{calc} package that were loaded implicitly by way of \ste, you
-may have to explicitly add \vb|\usepackage{calc}| to your source code,
-to retain those features.
-
 \clearpage
 \section{Acknowledgements}
 
diff --git a/Master/texmf-dist/tex/latex/stackengine/stackengine.sty b/Master/texmf-dist/tex/latex/stackengine/stackengine.sty
index a70e627f521..88fae292c58 100644
--- a/Master/texmf-dist/tex/latex/stackengine/stackengine.sty
+++ b/Master/texmf-dist/tex/latex/stackengine/stackengine.sty
@@ -1,6 +1,6 @@
-\def\stackengineversionnumber{v3.22}
+\def\stackengineversionnumber{v3.23}
 \ProvidesPackage{stackengine}
-[2013/11/06 \stackengineversionnumber\ 
+[2013/11/14 \stackengineversionnumber\ 
  Stacking text and objects in convenient ways]
 % This work may be distributed and/or modified under the
 % conditions of the LaTeX Project Public License, either version 1.3
@@ -58,7 +58,16 @@
 % V3.22 -Removed \usepackage{calc}
 %       -Corrected \@STRT placement to not inadvertantly force a \mathop
 %        on rows beginning with a minus sign.
+% V3.23 -Made EOL-separated stacks (i.e., \Longstack, \Shortstack,
+%        \Centerstack, \Vectorstack, etc.) work properly when a single
+%        (unstacked) row is input.
+%       -Noted in documentation that while EOL-separated stacks
+%        ignore leading/trailing spaces in their arguments (unless the
+%        EOL itself is a space token), the \stackon / \stackunder
+%        family of macros do not ignore spaces in their arguments.
+%       -Reinstated \usepackage{calc} (Oops!)
 \RequirePackage{etoolbox}
+\usepackage{calc}
 
 \newtoggle{@doneROWreads}
 \newtoggle{stackloop@done}
@@ -258,11 +267,17 @@
     \def\@stacksign{}%
     \def\@stackcondition{\the@stackindex < \narg}%
   \fi%
+  \def\@STRT{}%
+  \if T\@strutlongstacks\if L#4\def\@STRT{\strut}\fi\fi%
   \sbox{\stackedbox}{%
-    \stack@delim\ignorespaces%
+    \@STRT\stack@delim\ignorespaces%
       \csname arg\roman{@stackindex}\endcsname%
     \unskip\stack@delim}%
-  \togglefalse{stackloop@done}%
+  \ifnum\narg>1%
+    \togglefalse{stackloop@done}%
+  \else%
+    \toggletrue{stackloop@done}%
+  \fi%
   \whileboolexpr{test {\nottoggle{stackloop@done}}}{%
     \addtocounter{@stackindex}{\@stacksign 1}%
     \stackengine{\csname#4stackgap\endcsname}%