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%%% -*-LaTeX-*-
%%% /u/sy/beebe/tex/bib/showtags.sty, Mon Sep 12 09:25:01 1994
%%% Edit by Nelson H. F. Beebe <beebe@plot79.math.utah.edu>
%%%
%%% ====================================================================
%%% @LaTeX-style-file{
%%% author = "Nelson H. F. Beebe",
%%% version = "1.05",
%%% date = "06 September 1995",
%%% time = "16:46:14 MDT",
%%% filename = "showtags.sty",
%%% address = "Department of Mathematics
%%% University of Utah
%%% Salt Lake City, UT 84112
%%% USA",
%%% telephone = "+1 801 581 5254",
%%% FAX = "+1 801 581 4148",
%%% checksum = "08345 99 459 4338",
%%% email = "beebe@math.utah.edu (Internet)",
%%% codetable = "ISO/ASCII",
%%% keywords = "bibliography, citation label, citation tag",
%%% license = "public domain",
%%% supported = "yes",
%%% docstring = "This style file causes the bibliography
%%% citation tags to be displayed in boldface
%%% text in a right-adjusted framed box over
%%% each entry in a bibliography. This serves
%%% as a handy reference when the tags are
%%% needed for a \cite{} macro.
%%%
%%% For flexibility, the user may redefine
%%% \thecitetag to change the format. E.g.
%%%
%%% \renewcommand{\thecitetag}[1]{\fbox{\small\tt #1}}
%%%
%%% would typeset the tag in small typewriter
%%% text in a box.
%%%
%%% The checksum field above contains a CRC-16
%%% checksum as the first value, followed by the
%%% equivalent of the standard UNIX wc (word
%%% count) utility output of lines, words, and
%%% characters. This is produced by Robert
%%% Solovay's checksum utility."
%%% }
%%% ====================================================================
%
%%% Revision history:
%%%
%%% 1.05 [04-Nov-2010] add license statement in comment header, but
%%% preserve release date and time of 1.04
%%% 1.04 [06-Sep-1995] update for LaTeX 2e support
%%% 1.03 [12-Sep-1994] update file header, and add \strut to label box
%%% 1.02 [10-Sep-1991] update file header, trim trailing space
%%% 1.01 [11-Jul-1990] almost original version
\ifx \DeclareRobustCommand \undefined% then assume LaTeX 2.09
% \@bibitem and \@lbibitem definitions extracted from latex.tex
% labelled ``LATEX VERSION 2.09 <24 May 1989>''. We add only the
% \@showtag invocations.
%
\def\@bibitem#1{\item\if@filesw \immediate\write\@auxout
{\string\bibcite{#1}{\the\c@enumi}}\fi\ignorespaces
\@showtag{#1}}
%
\def\@lbibitem[#1]#2{\item[\@biblabel{#1}]\if@filesw
{ \def\protect##1{\string ##1\space}\immediate
\write\@auxout{\string\bibcite{#2}{#1}}}\fi\ignorespaces
\@showtag{#2}}
\else % must be LaTeX 2e
% From latex.ltx <1994/12/18>:
\def\@bibitem#1{\item\if@filesw \immediate\write\@auxout
{\string\bibcite{#1}{\the\value{\@listctr}}}\fi\ignorespaces
\@showtag{#1}}
%
\def\@lbibitem[#1]#2{\item[\@biblabel{#1}\hfill]\if@filesw
{\let\protect\noexpand
\immediate
\write\@auxout{\string\bibcite{#2}{#1}}}\fi\ignorespaces
\@showtag{#2}}
\fi
%
% Here are the macros that actually set the tag. By default, we put it
% in boldface type in a framed box that is right-adjusted in exactly the
% width of the current line (and we handle both the one- and two-column
% cases), and we ensure that a page break does not occur between the
% tag-in-the-box and its bibliographic entry. For flexibility, the user
% may redefine \thecitetag to change the format.
%
\newcommand{\thecitetag}[1]{\fbox{\bf #1}}
%
\def\@showtag#1{
\@tempdima=\textwidth
\if@twocolumn
\advance\@tempdima by -\columnsep
\divide\@tempdima by 2
\fi
\hbox to \@tempdima{\hfill\thecitetag{\strut#1}}\nobreak}
%
\endinput
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