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%%
%% This is file `undolabl.sty',
%% generated with the docstrip utility.
%%
%% The original source files were:
%%
%% undolabl.dtx  (with options: `package')
%% 
%% This is a generated file.
%% 
%% IMPORTANT NOTICE:
%% The usual disclaimers apply:
%% If it doesn't work right that's your problem.
%% (Nevertheless, send an e-mail to the maintainer
%%  when you find an error in this package.)
%% 
%% This work may be distributed and/or modified under the
%% conditions of the LaTeX Project Public License, either
%% version 1.3c of this license or (at your option) any later
%% version. This version of this license is in
%%    http://www.latex-project.org/lppl/lppl-1-3c.txt
%% and the latest version of this license is in
%%    http://www.latex-project.org/lppl.txt
%% and version 1.3c or later is part of all distributions of
%% LaTeX version 2005/12/01 or later.
%% 
%% This work has the LPPL maintenance status "maintained".
%% 
%% The Current Maintainer of this work is H.-Martin Muench
%% (Martin dot Muench at Uni-Bonn dot de).
%% 
%% The main code of this package was invented by Ulrich Diez
%% (eu_angelion@web.de) in 2008 and published on the internet.
%% While Ulrich Diez neither wanted to create a package himself
%% nor have one published under his name, he granted the
%% publication of his code. Therefore: Thanks!
%% 
%% This work consists of the main source file undolabl.dtx
%% and the derived files
%%    undolabl.sty, undolabl.pdf, undolabl.ins, undolabl.drv,
%%    undolabl-example.tex.
%% 


\NeedsTeXFormat{LaTeX2e}[1994/06/01]
\ProvidesPackage{undolabl}[2010/06/03 v1.0b
  Overriding labels (HMM)]

\newcommand\overridelabel[1]{%
  \@bsphack
  \protected@write\@auxout{}{\string\undonewlabel{#1}{\on@line}}%
  \label{#1}%
  \@esphack
  }%

\newcommand\undonewlabel{\@und@newl@bel rs}%

\newcommand\@und@newl@bel[4]{%
  \@ifundefined{#1@#3}\relax{%
    \@latex@warning@no@line{Label `#3' overridden#4}%
    \expandafter\global
    \expandafter\let
    \csname #1@#3\endcsname\relax
    \@ifundefined{#2@#3}{\global\@namedef{#2@#3}{i}}{%
      \expandafter\g@addto@macro\csname #2@#3\endcsname{i}%
      }%
    }%
  }%

\newcommand\undolabl@testdef[3]{%
  \@ifundefined{s@#2}\@secondoftwo\@firstofone{%
    \expandafter\ifx\csname s@#2\endcsname\empty
      \expandafter\@firstofone
    \else
    \expandafter\xdef\csname s@#2\endcsname{%
      \expandafter\expandafter
      \expandafter\@gobble
      \csname s@#2\endcsname
      }%
    \expandafter\@gobble
    \fi
    }%
    {%
    \@testdef{#1}{#2}{#3}%
    }%
  }%

\protected@write\@auxout{}{\string\reset@newl@bel}%

\newcommand\reset@newl@bel{%
  \ifx\@newl@bel\@testdef
    \let\@newl@bel\undolabl@testdef
    \let\undonewlabel\@gobbletwo
  \fi
  }%
\endinput
%%
%% End of file `undolabl.sty'.