Kdtyjb

I'm trying to customize this chapter header by changing the

thickhrulefill to myrule[line width = 2mm]{fast cap reversed}{fast cap reversed}.

Although the placement of the

myrule[line width = 2mm]{fast cap reversed}{fast cap reversed}

did not appear as it did with thickhrulefill (I want it with the chapter in the middle with the two rules surounding it as it did in the unmodified one)
Due to the lack of information and experience in this field I'm seeking your help as a beginner.
here is the code of the unmodified chapter header:

documentclass[a4paper,french,12pt,openany,twoside]{report}



%%%%%Language



usepackage[utf8]{inputenc}

usepackage[french]{babel} 

usepackage[T1]{fontenc}

usepackage{charter}

usepackage[expert]{mathdesign}

usepackage{geometry}

geometry{margin=57pt}



%%%%%Police



usepackage{lmodern}% police de caractère

usepackage{textcomp}% caractères additionnels

usepackage[normalem]{ulem}

usepackage{soul}



%%%%%Graphic



usepackage{graphicx}

usepackage{xcolor}% gestion des couleurs

usepackage{footnote}





%%%%%Titling



usepackage{titling}% pour le titre

usepackage{titlesec}% pour les sections

usepackage{titletoc}% pour la table des matières

usepackage{fancyhdr}% pour les en-têtes

usepackage{enumitem}



%%%%%Math



usepackage{array}

usepackage{amsthm,latexsym,amssymb,amsmath, amsfonts}

usepackage{mathtools}

usepackage{pstricks}%pour psshadowbox

usepackage{mathrsfs}

usepackage{verbatim}

usepackage{shapepar}

usepackage{calc}% syntaxe naurelle pour les calculs



usepackage{hyperref} 



%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%



usepackage{tikz}

usetikzlibrary{arrows}



newcommand{myrule} [3] []{

    begin{center}

        begin{tikzpicture}

            draw[#2-#3, ultra thick, #1] (0,0) to (0.5linewidth,0);

        end{tikzpicture}

    end{center}

}



%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%Chapter Header



makeatletter

defthickhrulefill{leavevmode leaders hrule height 1ex hfill kern z@}

def@makechapterhead#1{%

     vspace*{50p@}%

     %vspace*{10p@}%

     {parindent z@ centering reset@font

          thickhrulefillquad

           normalfontsffamilyscshape @chapapp{} thechapter

           quad  thickhrulefill

           parnobreak

           vspace*{7mm}%

           interlinepenalty@M

           hrule

           vspace*{6mm}%

           Huge bfseries #1parnobreak

           par

           vspace*{7mm}%

           hrule

       vskip 40p@

       vskip 100p@

     }}

    def@makeschapterhead#1{%

     vspace*{50p@}%

     %vspace*{10p@}%

     {parindent z@ centering reset@font

           thickhrulefill

           parnobreak

           vspace*{10p@}%

           interlinepenalty@M

           hrule

           vspace*{10p@}%

           Huge bfseries #1parnobreak

           par

           vspace*{10p@}%

           hrule

       vskip 40p@

       %vskip 100p@

     }}



begin{document}

chapter{Introduction}

end{document}

And here is the code I changed:

documentclass[a4paper,french,12pt,openany,twoside]{report}



%%%%%Language



usepackage[utf8]{inputenc}

usepackage[french]{babel} 

usepackage[T1]{fontenc}

usepackage{charter}

usepackage[expert]{mathdesign}

usepackage{geometry}

geometry{margin=57pt}



%%%%%Police

usepackage{lmodern}% police de caractère

usepackage{textcomp}% caractères additionnels

usepackage[normalem]{ulem}

usepackage{soul}



%%%%%Graphic



usepackage{graphicx}

usepackage{xcolor}% gestion des couleurs

usepackage{footnote}





%%%%%Titling



usepackage{titling}% pour le titre

usepackage{titlesec}% pour les sections

usepackage{titletoc}% pour la table des matières

usepackage{fancyhdr}% pour les en-têtes

usepackage{enumitem}



%%%%%Math



usepackage{array}

usepackage{amsthm,latexsym,amssymb,amsmath, amsfonts}

usepackage{mathtools}

usepackage{pstricks}%pour psshadowbox

usepackage{mathrsfs}

usepackage{verbatim}

usepackage{shapepar}

usepackage{calc}% syntaxe naurelle pour les calculs



usepackage{hyperref} 



%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%



usepackage{tikz}

usetikzlibrary{arrows}



newcommand{myrule} [3] []{

    begin{center}

        begin{tikzpicture}

            draw[#2-#3, ultra thick, #1] (0,0) to (0.5linewidth,0);

        end{tikzpicture}

    end{center}

}



%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%Chapter Header



makeatletter

defthickhrulefill{leavevmode leaders hrule height 1ex hfill kern z@}

def@makechapterhead#1{%

     vspace*{50p@}%



     %vspace*{10p@}%



 {parindent z@ centering reset@font

     myrule[line width = 2mm]{fast cap reversed}{fast cap reversed}quad

       normalfontsffamilyscshape @chapapp{} thechapter

       quad  myrule[line width = 2mm]{fast cap reversed}{fast cap reversed} 

       parnobreak

       vspace*{7mm}%

       interlinepenalty@M

       hrule

       vspace*{6mm}%

       Huge bfseries #1parnobreak

       par

       vspace*{7mm}%

       hrule

   vskip 40p@

   vskip 100p@

 }}

def@makeschapterhead#1{%

     vspace*{50p@}%

     %vspace*{10p@}%

     {parindent z@ centering reset@font

           thickhrulefill

           parnobreak

           vspace*{10p@}%

           interlinepenalty@M

           hrule

           vspace*{10p@}%

           Huge bfseries #1parnobreak

           par

           vspace*{10p@}%

           hrule

       vskip 40p@

       %vskip 100p@

     }}

begin{document}

chapter{Introduction}

end{document}

begin{document}

chapter{Introduction}

end{document}

Several problems:

• the empty lines in the title definition act as line breaks -> remove




• center environment around the tikzpicture will force it on a separate line -> remove




• missing % at line endings are interpreted as spaces -> add




• .5linewidth is to long -> there needs to be space for quad chapter 1quad -> make shorter




• if you have more than 9 chapters, it might be better to place the number in a box of fixed width

documentclass[a4paper,french,12pt,openany,twoside]{report}



%%%%%Language



usepackage[utf8]{inputenc}

usepackage[french]{babel} 

usepackage[T1]{fontenc}

usepackage{charter}

usepackage[expert]{mathdesign}

usepackage{geometry}

geometry{margin=57pt}



%%%%%Police

usepackage{lmodern}% police de caractère

usepackage{textcomp}% caractères additionnels

usepackage[normalem]{ulem}

usepackage{soul}



%%%%%Graphic



usepackage{graphicx}

usepackage{xcolor}% gestion des couleurs

usepackage{footnote}





%%%%%Titling



usepackage{titling}% pour le titre

usepackage{titlesec}% pour les sections

usepackage{titletoc}% pour la table des matières

usepackage{fancyhdr}% pour les en-têtes

usepackage{enumitem}



%%%%%Math



usepackage{array}

usepackage{amsthm,latexsym,amssymb,amsmath, amsfonts}

usepackage{mathtools}

usepackage{pstricks}%pour psshadowbox

usepackage{mathrsfs}

usepackage{verbatim}

usepackage{shapepar}

usepackage{calc}% syntaxe naurelle pour les calculs



usepackage{hyperref} 



%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%



usepackage{tikz}

usetikzlibrary{arrows}



newcommand{myrule}[3][]{%

%    begin{center}

        begin{tikzpicture}%

            draw[#2-#3, ultra thick, #1] (0,0) to (0.39linewidth,0);

        end{tikzpicture}%

%    end{center}

}



%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%Chapter Header



makeatletter

defthickhrulefill{leavevmode leaders hrule height 1ex hfill kern z@}

def@makechapterhead#1{%

     vspace*{50p@}%

     %vspace*{10p@}%

 {parindent z@ centering reset@font

     myrule[line width = 2mm]{fast cap reversed}{fast cap reversed}quad

       normalfontsffamilyscshape @chapapp{} thechapter

       quad  myrule[line width = 2mm]{fast cap reversed}{fast cap reversed} 

       parnobreak

       vspace*{7mm}%

       interlinepenalty@M

       hrule

       vspace*{6mm}%

       Huge bfseries #1parnobreak

       par

       vspace*{7mm}%

       hrule

   vskip 40p@

   vskip 100p@

 }}



begin{document}

chapter{Introduction}

end{document}

begin{document}

chapter{Introduction}

end{document}