%%
%% This is file `fnbreak.sty',
%% generated with the docstrip utility.
%%
%% The original source files were:
%%
%% fnbreak.dtx  (with options: `package')
%% 
%%   fnbreak package
%% 
%%   Copyright (c) 2003, 2004, 2006, 2010, 2012, 2023 Harald Harders (harald.harders@gmx.de; inactive)
%%   (2023-03-18 update done by H.-Martin Muench, Martin.Muench AT Uni-Bonn.de)
%% 
%%   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
%%      https://www.latex-project.org/lppl/lppl-1-3c.txt
%%   and the latest version of this license is in
%%      https://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.
%% 
\NeedsTeXFormat{LaTeX2e}[2017/04/15]
\ProvidesPackage{fnbreak}
 [2023-03-18 v1.40 Warning for pagebreak in footnote (HH)]

\RequirePackage{ifthen}

\newif\iffnb@showlabel
\newif\iffnb@verbose

\DeclareOption{label}{\fnb@showlabeltrue}
\DeclareOption{nolabel}{\fnb@showlabelfalse}
\DeclareOption{verbose}{\fnb@verbosetrue}
\DeclareOption{nonverbose}{\fnb@verbosefalse}
\ExecuteOptions{label,nonverbose}
\ProcessOptions\relax

\newcommand*\fnbreakverbose{\fnb@verbosetrue}
\newcommand*\fnbreaknonverbose{\fnb@verbosefalse}
\newcommand*\fnbreaklabel{\fnb@showlabeltrue}
\newcommand*\fnbreaknolabel{\fnb@showlabelfalse}

\newcounter{fnb@@numberpages}

\newif\iffnb@@isdoublepage

\xdef\fnb@@footnotestartnum{0}
\xdef\fnb@@footnotestartpage{0}
\def\fnb@globalwarning{}
\def\fnb@footnotestart#1#2#3{}
\def\fnb@footnoteend#1#2#3{}

\def\fnb@fnstart{\@bsphack
  \protected@write\@auxout{}{%
    \string\fnb@footnotestart{\the\c@footnote}{\thefootnote}{\thepage}%
    }%
  \@esphack%
  }

\def\fnb@fnend{\@bsphack
  \protected@write\@auxout{}{%
    \string\fnb@footnoteend{\the\c@footnote}{\thefootnote}{\thepage}%
    }%
  \@esphack%
  }

\providecommand\IfFormatAtLeastTF{\@ifl@t@r\fmtversion}

\AtBeginDocument{% = \AddToHook{begindocument}
  \def\fnb@footnotestart#1#2#3{%
    \xdef\fnb@@footnotestartnum{#1}%
    \gdef\fnb@@footnotestartpage{#3}%
  }%
  \def\fnb@footnoteend#1#2#3{%
    \xdef\fnb@@footnoteendnum{#1}%
    \def\fnb@@footnoteendpage{#3}%
    \ifx\fnb@@footnotestartnum\fnb@@footnoteendnum%
      \ifthenelse{\equal{\fnb@@footnotestartpage}{\fnb@@footnoteendpage}}{%
        \iffnb@verbose%
          \begingroup%
            \def\MessageBreak{^^J(fnbreak)\@spaces\@spaces\@spaces\@spaces}%
            \set@display@protect%
            \immediate\write\@unused{^^JPackage fnbreak Note:%
              \space\space\space\space Footnote number #1%
            \iffnb@showlabel\MessageBreak (label `#2') \fi%
            \MessageBreak%
            completely on page #3.^^J}%
          \endgroup%
        \fi%
      }{%
        \setcounter{fnb@@numberpages}{0}%
        \if@twoside%
          \ifnum\number0<0\fnb@@footnoteendpage{}%
            \ifnum\number0<0\fnb@@footnotestartpage{}%
              \setcounter{fnb@@numberpages}{\fnb@@footnoteendpage}%
              \addtocounter{fnb@@numberpages}{-\fnb@@footnotestartpage}%
              \addtocounter{fnb@@numberpages}{1}%
              \ifodd \fnb@@footnotestartpage{}%
                \fnb@@isdoublepagefalse%
              \else%
                \ifnum \thefnb@@numberpages=2{}%
                  \fnb@@isdoublepagetrue%
                \else%
                  \fnb@@isdoublepagefalse%
                \fi%
              \fi%
            \fi%
          \fi%
        \fi%
        \ifnum\thefnb@@numberpages=0%
          \PackageWarningNoLine{fnbreak}{Footnote number #1%
            \iffnb@showlabel\MessageBreak (label `#2')\fi%
            \MessageBreak%
            has been split over different pages:\MessageBreak%
            page \fnb@@footnotestartpage\space to page #3}%
        \else%
          \iffnb@@isdoublepage%
            \PackageWarningNoLine{fnbreak}{Footnote number #1%
              \iffnb@showlabel\MessageBreak (label `#2')\fi%
              \MessageBreak%
              has been split over different pages (double page):\MessageBreak%
              page \fnb@@footnotestartpage\space to page #3}%
          \else%
            \PackageWarningNoLine{fnbreak}{Footnote number #1%
              \iffnb@showlabel\MessageBreak (label `#2')\fi%
              \MessageBreak%
              has been split over different pages (flipside):\MessageBreak%
              page \fnb@@footnotestartpage\space to page #3}%
          \fi%
        \fi%
        \def\fnb@globalwarning{%
          \PackageWarningNoLine{fnbreak}{There are footnotes with a %
            pagebreak.\MessageBreak%
            Check if they are acceptable}%
        }%
      }%
    \else%
      \PackageError{fnbreak}{Internal problem:\MessageBreak%
        Start and stop marker of footnote do not fit:\MessageBreak%
        start: \fnb@@footnotestartnum, page \fnb@@footnotestartpage, %
        end: #1, page #3}{%
        This error may not happen. %
        Please try to make a short example which shows this behaviour %
        and send a bug report to harald.harders@gmx.de.}%
    \fi%
    }%
  \newcommand\fnb@orig@footnotetext{}%
  \let\fnb@orig@footnotetext\@footnotetext%
  \long\def\@footnotetext#1{\fnb@orig@footnotetext{\fnb@fnstart#1\fnb@fnend}}%
  \IfFormatAtLeastTF{2021-11-15}{%
     \AddToHook{enddocument/info}{\fnb@globalwarning}%
   }{\newcommand\fnb@dofilelist{}%
     \let\fnb@dofilelist\@dofilelist%
     \def\@dofilelist{\fnb@dofilelist\fnb@globalwarning}%
    }%
  }
\endinput
%%
%% End of file `fnbreak.sty'.