Cfrgtkky

I asked this question How to do recursive program with latex and got the following excellent answer by @JosephWright

documentclass{article}

usepackage{advdate}



% Set the first practice date

ThisDay{7}

ThisMonth{2}

ThisYear{2019}



%... the number of days between lectures

newcommand*{lecturegap}{7}



makeatletter

newcounter{holiday}

newcommand*addholiday[3]{%

  stepcounter{holiday}%

  @namedef{holidayarabic{holiday}}{%

    defholidayDay{#1}%

    defholidayMonth{#2}%

    defholidayYear{#3}%

  }%

}

makeatother

newcommand*{holidayDay}{0}

newcommand*{holidayMonth}{0}

newcommand*{holidayYear}{0}

addholiday{3}{3}{2019}  % ter Carnaval

addholiday{18}{4}{2019} % qui Atividade complementar

addholiday{19}{4}{2019} % sex Santa

addholiday{21}{4}{2019} % dom Tiradentes/Páscoa

addholiday{1}{5}{2019}  % qua Trabalhador

addholiday{19}{6}{2019} % qua Aniv. Rib. Preto



newififholiday

newcommand*{groupA}{}

makeatletter

newcommand*{nextprac}{%

  holidayfalse

  count0=1 %

  loop

    ifnumcount0>value{holiday}else

      @nameuse{holidaynumbercount0 }%

      ifnum 0%

        ifnumholidayDay=day1else0fi

        ifnumholidayMonth=month1else0fi

        ifnumholidayYear=year1else0fi

        =111 %

        holidaytrue

        count0=value{holiday}%

        else

      fi

    advancecount0 by 1 %

  repeat

  ifholiday

    AdvanceDate[lecturegap]%

    expandafternextprac

  else

    ifxgroupAempty

      edefgroupA{%

        {day=thedaymonth=themonthyear=theyearrelaxnoexpandtoday}}%

      expandafterexpandafterexpandafternextprac

    else

      AdvanceDate[lecturegap]%

      section*{groupAspace$parallel$ today}%

      defgroupA{}%

      AdvanceDate[lecturegap]%

    fi

  fi

}



begin{document}



  nextprac

  Practice one



  nextprac

  Practice two



  nextprac

  Practice three



  nextprac

  Practice four



  nextprac

  Practice five



  nextprac

  Practice six



  nextprac

  Practice seven



  nextprac

  Practice eight



  nextprac

  Practice nine



  nextprac

  Practice ten



end{document}

However, a few months latter, I realized that this code affects page numbering. But I cannot figure out how it is affected nor how to fix it.

The only thing I realized is that the page number becomes the exact number of holidays created by addholiday command.

My question is: how to restore page numbering without leaving the presented code away?

You're using count0 in the wild, which contains the page number.

Change all occurrences of count0 into @tempcnta