Questions tagged [hooks]
{hooks} are macros (or placeholders) stored at specific locations inside other macros that can be redefined to the user's specifications, thereby "hooking into" the macro at that specific point.
109
questions
3
votes
1
answer
99
views
Using lthooks to locally hook into command
Following a previous question of mine, as an exercise I'm trying to mimic the behavior of thmtools with amsthm using l3keys and lthooks. Now I am stuck on the hooks part. thmtools defines prehead, ...
- 2,615
2
votes
1
answer
51
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ltpara's new hook management and scrlayer-scrpage (for automatic paragraph counting, etc)
I have read that one should not use \everypar but rather \AddToHook{para/begin} for automatic paragraph enumeration and related operations. In principle, this works fine (mwe without counting, just ...
- 917
2
votes
1
answer
91
views
Problem with 'memoir' v3.8 and 'csquotes'
With the latest update of memoir (v.3.8) I detect an error if I also load csquotes and defines active quotes in the following way:
\documentclass{memoir}
\usepackage{csquotes}
\MakeBlockQuote{<}{|}...
- 45
1
vote
1
answer
128
views
Add a latex code before and after every \newtheorem
I define a few theorems with amsthm's \newtheorem, and I want to prepend and append an hrule for each one of them. Currently I do it with
\AddToHook{env/〈env name〉/before}{hrule code}
and
\AddToHook{...
- 1,093
1
vote
1
answer
43
views
\ShowHook, but only the code for a specific label
\ShowHook and its L3 counterpart \hook_show:n provided by lthooks are documented to print in the terminal a number of pieces of information about a given hook, including "the code chunks (and ...
- 13.2k
2
votes
1
answer
60
views
Cannot add to "after" hook of sectioning command
It seems one cannot add to the "after" hook of a sectioning command. For example the document
\documentclass{article}
\AddToHook{cmd/section/after}{\bfseries}
\begin{document}
abc
\section{...
- 2,615
3
votes
1
answer
52
views
\RemoveFromHook not working as expected if code placed in package file
In my answer to this question, something occurred that I don't understand about the hook system. If the code that adds a hook is directly in the main tex file (\tcolorboxenvironment in this example), ...
- 2,615
2
votes
1
answer
58
views
Wrapping environment in another environment with hooks
This problem is distilled from an environment that needs to use its body either wrapped in a minipage or not. Furthermore, this environment is to be automatically wrapped around all uses of another ...
- 173
3
votes
1
answer
71
views
acro's \printacronyms fails for nested acronyms if inserted thanks to the \AtEndDocument hook
In the following MCE example, the acro's list of the acronyms \printacronyms is inserted, not in the document body, but in the preamble thanks to the hook \AtEndDocument and that works like a charm:
\...
- 9,530
1
vote
0
answers
62
views
Add text color to "proof" environment without adding extra vertical space
Consider the following MWE, in which I'm trying to change the text color of the environment proof via the hook env/proof/begin. However, the use of \color would give extra vertical space when ...
- 7,826
11
votes
1
answer
298
views
What's the difference between \AtBeginDocument and \AddToHook{env/document/begin}?
Here is an MWE:
\documentclass{article}
\usepackage{lipsum}
\AtBeginDocument{\linespread{1}\fontsize{12bp}{23bp}\selectfont}
% \AddToHook{env/document/begin}{\linespread{1}\fontsize{12bp}{23bp}\...
- 581
2
votes
0
answers
72
views
Use shipout hooks to manipulate global state
I think that the recently introduced hook interface is an exciting extension of the interactions with LaTeX internals.
They motivated me to resume my efforts to convince LaTeX to process page contents ...
- 125
1
vote
1
answer
68
views
AddToHook for polyglossia to change chapter name doesn't work
I want to change the chaptername from פרק (polyglossia's default) to חלק.
Because the .tex file is created with LyX, and since the LyX editor adds the \usepackage{polyglossia} \setdefaultlanguage{} ...
- 1,093
1
vote
0
answers
83
views
Wrap text around an image (logo) placed in every page
I'm trying to help out the founders of a new open access journal called Seeds of Science to translate their article template from Word to LaTex.
The top of every page should look like this:
My rough ...
- 11
3
votes
1
answer
130
views
Fail to add hook to a command when there is an extra group
Consider the following example. The code is trying to append something after \mytest. Strangely, when there is an extra group, the \hook_gput_code:nnn does not work. There is no error message, just ...
- 7,826
4
votes
1
answer
179
views
Execute \clearpage before a section only if a certain amount of lines are already filled
I use:
\AddToHook{cmd/section/before}{\clearpage}
to start a new page before a new section. Is there a possibility to only execute this, if more than X percentage of the page is already filled?
So ...
- 101
1
vote
1
answer
102
views
Gregoriotex interferes badly with fancyhdr, how to solve this?
This is a sequel to this question. But it addresses a different problem.
When the above mentioned question was posed about a year ago, I had not noticed it. By accident I saw it last week, and as it ...
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4
votes
1
answer
267
views
Why cannot hooks be added to command names with underscore?
Consider the following example, which tries to add some code to a command's hook. If I replace g__mytest_tl to simply mytest then everything works fine. Does this mean that the hook system do not ...
- 7,826
5
votes
1
answer
171
views
What is the expl3 equivalent of \AddToHook?
While writing a package, when encountering commands like \selectlanguage that do not work inside the preamble, I've learned to put them inside \AddToHook{begindocument}{...}, so that if it is called ...
- 7,826
5
votes
1
answer
244
views
Command hooks vs package hooks, which is better?
In designing hook interfaces for my package. I found out that I have two methods of defining hooks:
\documentclass{article}
\begin{document}
\section*{Method 1: Use Command Hooks}
\...
- 10.5k
1
vote
0
answers
74
views
Naming conventions for private hooks in packages using lthooks
In some package, I use a lot of hooks (using the lthooks package) that are however not intended to be used as a hook by other packages / users.
Only certain code makes sense there, and I use hooks ...
0
votes
0
answers
32
views
Memoir: generic hook is deprecated [duplicate]
Since a couple of months, I get the following warnings when using the memoir class.
Generic hook 'package/before/framed' is deprecated.
Generic hook 'package/before/float' is deprecated.
Is this ...
- 350
2
votes
0
answers
45
views
How to use Silence package to silence hooks warning [duplicate]
When I run the following .tex source file through latex:
\documentclass[11pt,twoside,article]{memoir}
\begin{document}
Hi
\end{document}
I get the following warning:
...
(/usr/local/texlive/...
6
votes
1
answer
181
views
How to reset/clear a hook (or: how to print a background picture only once)
I'd like to add a picture in the background of a single page, but if I use \AddToHook it appears on every page of the document. If I want to clear it after it appears on that specific page (so only ...
- 4,672
0
votes
0
answers
104
views
how to execute commands with env hooks depending of document part?
Consider test case:
\documentclass{report}
\usepackage{appendix}
\title{Title}\author{}\date{}
\newcommand\hooktest{this shouldn't be printed}
\AddToHook{begindocument/before}{
\renewcommand\...
25
votes
1
answer
3k
views
'Generic hook <name> is deprecated' warning after update
I have had a warning for a few days (since I updated MiKTeX):
LaTeX hooks Warning: Generic hook
(hooks) 'file/after/translations-basic-dictionary-french.trsl' is
(hooks) ...
- 1,281
2
votes
1
answer
193
views
Adding a comand hook to \appendix with cleveref
I'm trying to set a hook to the \appendix command using the new hook management system. However, when cleveref is loaded, the hook fails with error "Illegal parameter number in definition of \...
- 13.2k
2
votes
0
answers
82
views
Automatic Paragraph Numbers [2021, Using LaTeX's 2020's New Hook Management]
This is a 2021 follow-up question to my question from 2015.
I want to add to every text paragraph an number automatically (see original question).
In 2015, user @Fran warned me regarding the solution ...
- 22.1k
5
votes
2
answers
538
views
How can I use LaTeX hooks in historical versions of TeX Live?
At the end of 2020, LaTeX added support for a general hook management system. The system allows me to execute \maketitle at the beginning of a document if I am in the preamble, or immediately if I am ...
- 1,206
2
votes
2
answers
58
views
Different behavior of \gcd analogs within babel russian and serbianc?
Consider the following two analog MWEs:
1.
\documentclass{article}
\usepackage[T2A]{fontenc}
\usepackage[utf8]{inputenc}
\usepackage[russian]{babel}
%\let\gcd\NOD
\listfiles
\begin{document}
$\...
- 1,026
1
vote
1
answer
265
views
With ltshipout, how to make some `picture` environment's content visible both if the pages are colored and only on the first page?
The following MCE shows that, if the pages are colored, a picture environment's content is:
visible with \AddToHook{shipout/background} and \AddToHook{shipout/foreground} (but) on all pages,
not ...
- 9,530
3
votes
1
answer
144
views
Future variable reference
For a document I am working on I would like to achieve something along the following lines:
In the beginning of the document, a summary of the most important parts mentioned in the document are given. ...
- 364
0
votes
1
answer
194
views
Lastpage and \enddocumenthook: extra page created
Here is a MWE that on my Mac (MacTeX, several months old) produces the expected one page of output (as also happen on earlier versions of MikTeX), but on the latest version of MikTeX (21.1) produces ...
- 1,452
5
votes
1
answer
185
views
storebox not working as expected since texlive 2020
I have to include page-specific content multiple times per page (DM codes to be specific) in a LaTeX document. To that end I use a combination of storebox and everypage such that content is typeset ...
- 51
1
vote
0
answers
182
views
How to require a LaTeX version that provides the new hooks management system?
A class of mine is loading the biblatex package if the user uses a given option. For this, the class used to rely on \AtEndPreamble{\RequirePackage{biblatex}} and I guess it used to work nicely. It ...
- 9,530
1
vote
0
answers
2k
views
Package hooks Error: Extra \PopDefaultHookLabel
Recently I moved from Mac to Windows and when I compile the document class nle.cls in Windows, which can be downloaded from this link (it is a journal template), I get lots of errors. I did not have ...
- 365
0
votes
0
answers
58
views
How can I insert commands when entering into mathmode and when exiting from mathmode?
I want to insert \special's when entering into mathmode and when exiting from mathmode.
I wrote the following source code with everyhook.sty:
\documentclass{amsart}
\usepackage{everyhook}
\newcommand{\...
4
votes
2
answers
119
views
Display number of sections at the beginning of a chapter
My goal is to display the number of sections the chapter contains, at the beginning of every chapter.
Currently, my idea is to store in the aux file the value of the section counter at the end of ...
1
vote
1
answer
103
views
How to redefine \\ command inside a tabular using expl3?
When i try to redefine \\ inside a tabular,my redefining not works. I understood,what probably after hook \AtBeginEnvironment something redefine my \\ command,but i dont know,how to fix it. Help me ...
0
votes
1
answer
793
views
\src@load@hook undefined error after Miktex update and using
I know it is normal practice to place a MWE, however in this case, I hope by just stating the error, you can help me down some path I can take to resolve this issue.
I have been using Harvey Sheppard'...
- 9,024
9
votes
1
answer
560
views
\renewenvironment and environment hooks
This question refers to the hook system of LaTeX 2e introduced in October 2020 (lthooks).
How does \renewenvironment interact with its hooks?
Are the hooks cleared or does the code already added to ...
- 48.3k
3
votes
1
answer
587
views
Removing the content of a LaTeX hook (using lthooks)
In a special case (new version of the document class leaflet) I use the new LaTeX hook shipout/before to save the finished pages in box registers without output. In the next step they are combined and ...
- 939
1
vote
0
answers
216
views
CTeX recent update causing problem: \ctex_gadd_hook:Nn \CJKhook { \ctex_set_ignorespaces: }
It was fine by 17th Sep and the file would compile using PDFLaTeX to produce PDF.
\documentclass[12pt, a4paper]{ctexrep}
\usepackage{amsmath}
\usepackage{adjustbox} % uses graphicx
\usepackage[top=1....
- 649
0
votes
1
answer
93
views
Re-defining `\\`
EDIT: The original version of this was a foolish question; @egreg points out that I was thinking of {amsmath}'s matrix environment.
I'm sure that this has been asked before, but it's hard to search ...
- 1,394
2
votes
1
answer
222
views
\AtEndPreamble hook breaks hyperref with bibliography
In the past I used \usepackage{hyperref} within the \AtEndPreamble{} hook, without problems. At least I think so. However, recently the hook breaks the links to my bibliograpy. Is that a bug or am I ...
- 6,160
5
votes
1
answer
98
views
How to work with members of sequence during iteration with expl3?
I have several environments before and after which I want to insert identical code. I want to do this using expl3 because in my opinion it is the best solution. But my solution does not work because ##...
2
votes
1
answer
93
views
Hooking an environment inside `document` environment
I am making a beamer-document that is basically a one-page frame. Since don't want to explicitly call the frame inside the environment, I how \begin{frame}[t] at the beginning of the document and \end{...
- 721
4
votes
4
answers
323
views
Add material to a macro with parameter
I'm trying to define a macro \addtohook that adds material to another macro \hook, similar to LaTeX's \addto@hook, but where \hook takes a parameter.
So if \hook is empty at start, after a series of \...
- 13.3k
5
votes
1
answer
792
views
How to run a command before compiling (hook script) in latexmk?
I use latexmk to compile a project.
It should run some bash commands before starting to compile.
I tried to add
$compiling_cmd="date >> /tmp/compiled.log";
to the local .latexmkrc file. But ...
- 8,699
0
votes
1
answer
142
views
Automatically drawing frames around document elements with LaTeX
I wonder how to draw frames around various elements in LaTeX (or LuaLaTeX if needed)?
I would like to get frames around every text paragraph, and/or every equation, every image, every header, every ...
- 343