Después de que mi pregunta anterior no fue respondida, recorté el MWE a lo que creo que es el problema real. Tengo una macro \recentque almacena información (que es necesaria para hyperreflos enlaces). Esta macro se actualiza periódicamente (es decir, se sobrescribe) cuando \newonese emite un determinado comando ( ).
Quiero almacenar el valor de esta macro (es decir, \recent) al final de una página o al comienzo de una nueva página en otra macro ( \previous) para fines de referencia (lo necesito para poner un hyperrefvínculo de retroceso en cada página). Me metí con los sospechosos habituales ( everypage,,, ; no parece gustarle ), pero de alguna manera la evershimacro se actualiza pronto o en el momento equivocado.atbegshibophookhyperref\previous
Considere este MWE para ilustrar el problema. Cambié a " newtoks" después de " renewcommand{\previous}{\recent}" con macros normales y no tuve éxito, pero eso no ayudó.
La idea es tener el verdadero " \previous" en el título. Sin embargo, como muestra el MWE, este no es el caso. Probablemente, haya una solución extremadamente simple, y probablemente tenga que ver con mecanismos de envío, pero estoy demasiado ciego (y sin experiencia) para verlo.
Se agradece toda ayuda.
[pregunta anterior aquí: https://tex.stackexchange.com/questions/539473/control-the-referencing-of-labels-in-headlines-hyperref-komascript-or-how-a]
\documentclass[%
12pt,%
twoside=false,%
cleardoublepage=empty,%
open=right,%
parskip=half*,%
headings=normal,%
numbers=noenddot,%
chapterprefix=true,%
%draft %
]{scrbook}
\usepackage[headsepline]{scrlayer-scrpage} \pagestyle{scrheadings}
\clearscrheadfoot
\newcommand{\JumpBackHeadline}{\pagemark -- \the\previous}
\ohead{\JumpBackHeadline}
\usepackage{everypage}
\usepackage{blindtext}
\newtoks{\recent}
\newtoks{\previous}
\global\recent={dummyrecent}
\global\previous={dummyprevious}
\AddEverypageHook{%
previous before EverypageHookoperation: \the\previous\\%
\global\previous={\the\recent}%
previous after EverypageHookoperation: \the\previous
}
\newcommand{\newone}[1]{%
my argument is: #1\\
previous is: \the\previous\\
recent was: \the\recent\\
\global\recent={#1}
recent is: \the\recent
}
\begin{document}
Starting:\\
previous is: \the\previous\\
recent is: \the\recent
\newone{number1}
\blindtext[5]
\newone{number2}
And now lots of text:\\
\blindtext[10]
\newone{number3}
\end{document}
Editar: Perdón por causar confusión. Con suerte, el siguiente MWE muestra mejor lo que quiero. Lo que me preocupa no son los números de página, sino las etiquetas de los enlaces. Estoy tratando de explicar el concepto en la "respuesta a la pregunta 1" del MWE. Probablemente todo el enfoque sea un desastre; Si alguien tiene una idea mejor, no dude en comentar.
\documentclass[
12pt,
twoside=false,
cleardoublepage=empty,
open=right,
parskip=half*,
headings=normal,
numbers=noenddot,
chapterprefix=true,
%draft,
]{scrartcl}
\usepackage{everypage}
\usepackage{blindtext}
\usepackage{marginnote}
\usepackage{ifthen,ragged2e}
\usepackage{hyperref}
%%% The Headline %%%%
\usepackage[headsepline]{scrlayer-scrpage} \pagestyle{scrheadings}
\clearscrheadfoot
\newcommand{\JumpBackHeadline}{% define the headline, depening on JumpBackOn
\ifthenelse{\boolean{JumpBackOn}}%
{\pagemark -- Quick link to
\hyperref[\previous]{\previous}}% Hyperlink only, if jumpback is on
{\pagemark}% %otherwise, i.e. in the questions section, just the
% pagemark
}
\ohead{\JumpBackHeadline}
%% The jump commands to set the hyperlinks
\newboolean{JumpBackOn} % Switch on for jumpback hyperlinks
\setboolean{JumpBackOn}{false} % but not in the first (questions) section
\newcommand{\jumpdown}[1]{\marginnote{\RaggedRight\tiny{\hyperref[#1]{Down
to
#1}}}} % Hyperlink to jump from the question in the questions
% section to the label at the start of the answer in
% the answer section; #1 is this label
\newcommand{\jumpback}[1]{% Jump from the answer to the label at the start of the corresponding question in the questions section; #1 is this label.
\gdef\recent{#1}% Remember this label, it is the label to the question that is currently being discussed.
\marginnote{\RaggedRight\tiny{\hyperref[#1]{Up to
#1}}} % place the hyperlink in the margin
}
%%%% When a page is finished and shipped out: remember the label in
%%%% \recent *at this time* by storing it in \previous
\AddEverypageHook{%
% globally make \previous the same as the current \recent
\global\let\previous=\recent
}
\begin{document}
\section{Questions for students (sometimes very
long)}\setboolean{JumpBackOn}{false}
\begin{enumerate}
\item[1.] Question 1 \label{q:1}\jumpdown{a:1}
\blindtext
\item[2.] Question 2 \label{q:2}\jumpdown{a:2}
\blindtext
\item[3.] Question 3 \label{q:3}\jumpdown{a:3}
\blindtext
\item[4.] Question 4 \label{q:4}\jumpdown{a:4}
\blindtext
\end{enumerate}
\clearpage
\section{Answers, sometimes very
long}\setboolean{JumpBackOn}{true} % From now on, jumpback link in headline
\subsection{Answer to question 1}\label{a:1}\jumpback{q:1}
This is the answer text to question 1. In the margin, a label links
back to question 1; this link is correct. However, as this answer text
extends over a few pages, students should have a quick link in the
headline of each page to jump back to question 1 until answer 1 is
finished. The link should be at the same position in the top or maybe
bottom region of every page; it does not have to be the header, if
this causes trouble.
The link in the headline (or somewhere else) should point to the label
of the question that is (still) discussed \emph{at the beginning of
each page}. In our case, that is question 1 for page 3, 4 and 5.
However, on page 5 there is a link to question 2, not 1. Similarly, on
page 6 there is a link to question 3, not 2, although this question
starts at the top of the next page.
Again, at page 7, the link points to question 4, even though this
question starts at the top of the next page. The link on page 8 is
also wrong, although it appears right: If the previous-linklabel is
fixed at the end of page 7 and this label would then (correctly) point
to question 3, it should point to question 3 at the top of page 8 as
well, although this is not what I want: It is a design failure on my
part, but I have no better idea at the moment. If anyone knows how to
approach the whole thing in a better way, I would be grateful.
\blindtext[9]
\subsection{Answer to question 2}\label{a:2}\jumpback{q:2}
\blindtext[7]
\subsection{Answer to question 3}\label{a:3}\jumpback{q:3}
\blindtext[4]
Some space to fill the page:
\vfill
\subsection{Answer to question 4}\label{a:4}\jumpback{q:4}
\blindtext
\end{document}
Respuesta1
\global\previous={\the\recent}voluntadnoentregar el contenido actual de \recent. Deberías hacer
\global\previous=\expandafter{\the\recent}
Pero creo que usar \global\letes mejor.
\documentclass[
12pt,
twoside=false,
cleardoublepage=empty,
open=right,
parskip=half*,
headings=normal,
numbers=noenddot,
chapterprefix=true,
%draft,
]{scrbook}
\usepackage[headsepline]{scrlayer-scrpage} \pagestyle{scrheadings}
\clearscrheadfoot
\newcommand{\JumpBackHeadline}{\pagemark -- \previous}
\ohead{\JumpBackHeadline}
\usepackage{everypage}
\usepackage{blindtext}
\def\recent{dummyrecent}
\def\previous{dummyprevious}
\AddEverypageHook{%
previous before EverypageHookoperation: \previous\\%
% globally make \previous the same as the current \recent
\global\let\previous=\recent
previous after EverypageHookoperation: \previous
}
\newcommand{\newone}[1]{%
my argument is: #1\\
previous is: \previous\\
recent was: \recent\\
\gdef\recent{#1}%
recent is: \recent
}
\begin{document}
Starting:\\
previous is: \previous\\
recent is: \recent
\newone{number1}
\blindtext[5]
\newone{number2}
And now lots of text:
\blindtext[10]
\newone{number3}
\end{document}