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titlesec makes fancyhdr mistreating the document class

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0

MWE is pretty simple:

documentclass[twoside]{article}

%usepackage{titlesec}

usepackage{fancyhdr}

begin{document}

pagestyle{fancy}

section{tist1}

subsection{a}

newpage

subsection{b}

end{document}

On the second page, there is the subsection name on the left and the section name on the right.

Now, uncomment the titlesec import, and the behaviour changes: the section name on the left and nothing (actually, a fantom of non-existent chapter name) on the right.

It happens because titlesec redefines chapter as relax, though normally it's undefined in article class. The fancyhdr packages has a following check:

ifxchapter@undefined

It fails, and marks are defined as in classes that have chapters. I can work it around with

letchapterundefined

after usepackage{titlesec}, or by explicitly redefining sectionmark/subsectionmark after pagestyle{fancy}. But why should I? Is this a bug in titlesec, or setting chapter to relax has some purpose?

fancyhdr titlesec article

share|improve this question

asked 1 hour ago

bodqhrohrobodqhrohro

1083

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  What versions of the packages are you using? (Put listfiles before documentclass and report the output here.) I get identical output with or without titlesec.
  
  – Alan Munn
  4 mins ago
  
  
  

  
  
  
  

add a comment | 

0

MWE is pretty simple:

documentclass[twoside]{article}

%usepackage{titlesec}

usepackage{fancyhdr}

begin{document}

pagestyle{fancy}

section{tist1}

subsection{a}

newpage

subsection{b}

end{document}

On the second page, there is the subsection name on the left and the section name on the right.

Now, uncomment the titlesec import, and the behaviour changes: the section name on the left and nothing (actually, a fantom of non-existent chapter name) on the right.

It happens because titlesec redefines chapter as relax, though normally it's undefined in article class. The fancyhdr packages has a following check:

ifxchapter@undefined

It fails, and marks are defined as in classes that have chapters. I can work it around with

letchapterundefined

after usepackage{titlesec}, or by explicitly redefining sectionmark/subsectionmark after pagestyle{fancy}. But why should I? Is this a bug in titlesec, or setting chapter to relax has some purpose?

fancyhdr titlesec article

share|improve this question

asked 1 hour ago

bodqhrohrobodqhrohro

1083

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  What versions of the packages are you using? (Put listfiles before documentclass and report the output here.) I get identical output with or without titlesec.
  
  – Alan Munn
  4 mins ago
  
  
  

  
  
  
  

add a comment | 

MWE is pretty simple:

documentclass[twoside]{article}

%usepackage{titlesec}

usepackage{fancyhdr}

begin{document}

pagestyle{fancy}

section{tist1}

subsection{a}

newpage

subsection{b}

end{document}

On the second page, there is the subsection name on the left and the section name on the right.

Now, uncomment the titlesec import, and the behaviour changes: the section name on the left and nothing (actually, a fantom of non-existent chapter name) on the right.

It happens because titlesec redefines chapter as relax, though normally it's undefined in article class. The fancyhdr packages has a following check:

ifxchapter@undefined

It fails, and marks are defined as in classes that have chapters. I can work it around with

letchapterundefined

after usepackage{titlesec}, or by explicitly redefining sectionmark/subsectionmark after pagestyle{fancy}. But why should I? Is this a bug in titlesec, or setting chapter to relax has some purpose?

fancyhdr titlesec article

share|improve this question

asked 1 hour ago

bodqhrohrobodqhrohro

1083

documentclass[twoside]{article}

%usepackage{titlesec}

usepackage{fancyhdr}

begin{document}

pagestyle{fancy}

section{tist1}

subsection{a}

newpage

subsection{b}

end{document}

ifxchapter@undefined

letchapterundefined

share|improve this question

asked 1 hour ago

bodqhrohrobodqhrohro

1083

share|improve this question

asked 1 hour ago

bodqhrohrobodqhrohro

1083

asked 1 hour ago

bodqhrohrobodqhrohro

1083

asked 1 hour ago

bodqhrohrobodqhrohro

1083