For my book i use memoir document class with asymmetric page layout (spinner margin is half of outer margin). For index i change text width with adjmulticol to have a place for index in three column formatted by idxlayout. This almost work fine ... except that all items are on one page! When the page is full, i.e. page is not going to break on as expected (see example below) and as is done when in adjmulticol is other (non index) text.
What cause this behavior? Is there some better approach to achieve desired result?
Edit:
In my original question I unfortunately strip out three lines:
\usepackage{calc}
immediately after document class and
\setlength{\marginwidth}{\marginparsep+\marginparwidth}
\setlength{\headwidth}{\textwidth+\marginwidth}
before \usepackage{adjmulticol}, which shows, why I actually nested a adjmulticol and idxlayout.
The length \marginwidth I use for calculation of \headwidth and other items in my real case (like chapter title layout, new environments which are extended into outer margin). I hope that my questions is more clear.
Wider text width i need for placing longer indices in index that they are not broken unnecessary into two lines.
\documentclass[twoside,openright]{memoir}
\usepackage{calc}% added in eddit
\setstocksize{297mm}{210mm} % A4
\settrimmedsize{\stockheight}{\stockwidth}{*} % A4
\newlength{\marginwidth}
\settypeblocksize{247mm}{120mm}{*}
\setulmargins{25mm}{*}{1} % upper, lower margin, ratio
\setlrmarginsandblock{30mm}{60mm}{*}% spinner, outer margin, ratio
\checkandfixthelayout
\setlength{\marginparwidth}{45mm}
\setlength{\marginparsep}{5mm}
\setlength{\marginwidth}{\marginparsep+\marginparwidth}% added in edit
\setlength{\headwidth}{\textwidth+\marginwidth}% added in edit
%---------------------------------------------------------------%
\usepackage{adjmulticol}
\usepackage[columns=3]{idxlayout}
\makeindex
\begin{document}
\mainmatter
\chapter{Test of indexing}
\index{Alpha}
alpha(a) \index{Alpha!alpha}
alpha(a) \index{Alpha!alpha!a} alpha(b) \index{Alpha!alpha!b}
alpha(c) \index{Alpha!alpha!c} alpha(d) \index{Alpha!alpha!d}
beta(a) \index{Alpha!beta}
\index{Alpha!beta!a}
beta(b) \index{Alpha!beta!b} beta(c) \index{Alpha!beta!c}
\section{Beta, Delta, Epsilon, Eta}
\index{Beta}
alpha(a) \index{Beta!alpha}
alpha(a) \index{Beta!alpha!a} alpha(b) \index{Beta!alpha!b}
alpha(c) \index{Beta!alpha!c} alpha(d) \index{Beta!alpha!d}
beta(a) \index{Beta!beta}
\index{Beta!beta!a}
beta(b) \index{Beta!beta!b} beta(c) \index{Beta!beta!c}
\index{Delta}
alpha(a) \index{Delta!alpha}
alpha(a) \index{Delta!alpha!a} alpha(b) \index{Delta!alpha!b}
alpha(c) \index{Delta!alpha!c} alpha(d) \index{Delta!alpha!d}
beta(a) \index{Delta!beta}
\index{Delta!beta!a}
beta(b) \index{Delta!beta!b} beta(c) \index{Delta!beta!c}
\index{Epsilon}
alpha(a) \index{Epsilon!alpha}
alpha(a) \index{Epsilon!alpha!a} alpha(b) \index{Epsilon!alpha!b}
alpha(c) \index{Epsilon!alpha!c} alpha(d) \index{Epsilon!alpha!d}
beta(a) \index{Epsilon!beta}
\index{Epsilon!beta!a}
beta(b) \index{Epsilon!beta!b} beta(c) \index{Epsilon!beta!c}
\index{Eta}
alpha(a) \index{Eta!alpha}
alpha(a) \index{Eta!alpha!a} alpha(b) \index{Eta!alpha!b}
alpha(c) \index{Eta!alpha!c} alpha(d) \index{Eta!alpha!d}
beta(a) \index{Eta!beta}
\index{Eta!beta!a}
beta(b) \index{Eta!beta!b} beta(c) \index{Eta!beta!c}
\section{Gamma, Kappa, Lambda, Omega}
\index{Gama}
alpha(a) \index{Gamma!alpha}
alpha(a) \index{Gamma!alpha!a} alpha(b) \index{Gamma!alpha!b}
alpha(c) \index{Gamma!alpha!c} alpha(d) \index{Gamma!alpha!d}
beta(a) \index{Gamma!beta}
\index{Gamma!beta!a}
beta(b) \index{Gamma!beta!b} beta(c) \index{Gamma!beta!c}
\index{Kappa}
alpha(a) \index{Kappa!alpha}
alpha(a) \index{Kappa!alpha!a} alpha(b) \index{Kappa!alpha!b}
alpha(c) \index{Kappa!alpha!c} alpha(d) \index{Kappa!alpha!d}
beta(a) \index{Kappa!beta}
\index{Kappa!beta!a}
beta(b) \index{Kappa!beta!b} beta(c) \index{Kappa!beta!c}
\index{Lambda}
alpha(a) \index{Lambda!alpha}
alpha(a) \index{Lambda!alpha!a} alpha(b) \index{Lambda!alpha!b}
alpha(c) \index{Lambda!alpha!c} alpha(d) \index{Lambda!alpha!d}
beta(a) \index{Lambda!beta}
\index{Lambda!beta!a}
beta(b) \index{Lambda!beta!b} beta(c) \index{Lambda!beta!c}
\index{Omega}
alpha(a) \index{Omega!alpha}
alpha(a) \index{Omega!alpha!a} alpha(b) \index{Omega!alpha!b}
alpha(c) \index{Omega!alpha!c} alpha(d) \index{Omega!alpha!d}
beta(a) \index{Omega!beta}
\index{Omega!beta!a}
beta(b) \index{Omega!beta!b} beta(c) \index{Omega!beta!c}
\section{Pi, Phi, Psi, Rho}
\index{Pi}
alpha(a) \index{Pi!alpha}
alpha(a) \index{Pi!alpha!a} alpha(b) \index{Pi!alpha!b}
alpha(c) \index{Pi!alpha!c} alpha(d) \index{Pi!alpha!d}
beta(a) \index{Pi!beta}
\index{Pi!beta!a}
beta(b) \index{Pi!beta!b} beta(c) \index{Pi!beta!c}
\index{Phi}
alpha(a) \index{Phi!alpha}
alpha(a) \index{Phi!alpha!a} alpha(b) \index{Phi!alpha!b}
alpha(c) \index{Phi!alpha!c} alpha(d) \index{Phi!alpha!d}
beta(a) \index{Phi!beta}
\index{Phi!beta!a}
beta(b) \index{Phi!beta!b} beta(c) \index{Phi!beta!c}
\index{Psi}
alpha(a) \index{Psi!alpha}
alpha(a) \index{Psi!alpha!a} alpha(b) \index{Psi!alpha!b}
alpha(c) \index{Psi!alpha!c} alpha(d) \index{Psi!alpha!d}
beta(a) \index{Psi!beta}
\index{Psi!beta!a}
beta(b) \index{Psi!beta!b} beta(c) \index{Psi!beta!c}
\index{Rho}
alpha(a) \index{Rho!alpha}
alpha(a) \index{Rho!alpha!a} alpha(b) \index{Rho!alpha!b}
alpha(c) \index{Rho!alpha!c} alpha(d) \index{Rho!alpha!d}
beta(a) \index{Rho!beta}
\index{Rho!beta!a}
beta(b) \index{Rho!beta!b} beta(c) \index{Rho!beta!c}
\section{Sigma, Theta, Xi}
\index{Sigma}
alpha(a) \index{Sigma!alpha}
alpha(a) \index{Sigma!alpha!a} alpha(b) \index{Sigma!alpha!b}
alpha(c) \index{Sigma!alpha!c} alpha(d) \index{Sigma!alpha!d}
beta(a) \index{Sigma!beta}
\index{Sigma!beta!a}
beta(b) \index{Sigma!beta!b} beta(c) \index{Sigma!beta!c}
\index{Theta}
alpha(a) \index{Theta!alpha}
alpha(a) \index{Theta!alpha!a} alpha(b) \index{Theta!alpha!b}
alpha(c) \index{Theta!alpha!c} alpha(d) \index{Theta!alpha!d}
beta(a) \index{Theta!beta}
\index{Theta!beta!a}
beta(b) \index{Theta!beta!b} beta(c) \index{Theta!beta!c}
\index{Xi}
alpha(a) \index{Xi!alpha}
alpha(a) \index{Xi!alpha!a} alpha(b) \index{Xi!alpha!b}
alpha(c) \index{Xi!alpha!c} alpha(d) \index{Xi!alpha!d}
beta(a) \index{Xi!beta}
\index{Xi!beta!a}
beta(b) \index{Xi!beta!b} beta(c) \index{Xi!beta!c}
\backmatter
\begin{adjmulticols}{1}{0mm}{-\marginwidth}\Large
\printindex
\end{adjmulticols}
\end{document}
book
it will not even compile, so I'm guessing that the two packages really do not like each other. On the other hand, I do not quite understand what you are trying to do.