# Chapter start on the right put text on the left

i'm using the classic thesis template. (edit: Actually, i'm not loading the sty anywhere, so I guess I'm just using srcbook? the sty is however in the same folder...)

As many book templates chapters start on the right sided page in double page mode. That is what I want.

However I would like to put text on the left page of that chapter starting page. In this case how to reference to this chapter.

How can I do this? So the text is linked with the chapter start.

I could mess arround with \clearpage, but this is a 'dirty' solution as this might jump every time i change the text...

• Welcome, i think classicthesis is 'dirty' problem ;-p – Johannes_B Feb 15 '16 at 16:36
• @Johannes_B: Only 'dirty'? ;-) – user31729 Feb 15 '16 at 16:43
• How should it look like if the previous chapter ends on a left page? Would you like to have an empty right page then? This would be really uncommon … – Tobi Feb 15 '16 at 17:10
• And Welcome to TeX.SX! PS: I guess your question was down voted because you forgot to include a minimal working example (MWE) ;-) – Tobi Feb 15 '16 at 17:11
• Thx and sorry I forgot the MWE. the text i want on the left page is side info on the chapter. If the previous chapter ends left, then the next should start on the right anyway, with the side info on the left... is that so uncommon? – user77407 Feb 15 '16 at 20:02

I am not sure if I understand what you want to do.

You could use\cleardoubleevenpage to ensure that the additional informations are on the left page before the new chapter starts. But this may result in empty right pages before the additional informations as you can see on pages 1 and 7 in the following example.

\documentclass{scrbook}
\newcommand\chapterinfo[1]{\cleardoubleevenpage\thispagestyle{empty} #1}

\usepackage{blindtext}% only dummy text
\begin{document}
\chapterinfo{Infos for the following chapter}
\chapter{A chapter}
\blindtext

\chapterinfo{Other informations for the second chapter}
\chapter{Second chapter}
\Blindtext

\chapter{Next chapter}
\Blindtext
\end{document}


Here is a solution.

One can patch \scr@startchapter replace \cleardoublepage with \mtcleardoublepage and define \mtcleardoublepage to fill what one need.

\documentclass{scrbook}
\usepackage{lipsum}

\usepackage{etoolbox}

\newcommand*\mtleftpage{\hbox{}}
\makeatletter
\newcommand*\mtcleardoublepage{\clearpage\if@twoside \ifodd\c@page\else
\mtleftpage\newpage\if@twocolumn\hbox{}\newpage\fi\fi\fi}
\patchcmd{\scr@startchapter}{\cleardoublepage}{\mtcleardoublepage}{}{\errmessage{error in patching \string\scr@startchapter}}
\makeatother

\renewcommand*\mtleftpage{some thing}
\begin{document}
\chapter{One}
\lipsum[1-2]
\chapter{Two}
\lipsum[1-2]
\renewcommand*\mtleftpage{onther thing}
\chapter{Three}
\lipsum[1-2]
\renewcommand*\mtleftpage{Bye}
\chapter{Four}
\lipsum[1-2]

\end{document}