1

I am preparing some lecture notes in beamer documentclass. After I added quite a much of customisations, I realised that the shortcut ' for $ ^{\prime} $ is not working. How do I restore the usual behaviour? Following is an MWE. Please help.

\documentclass[aspectratio=169,10pt, notheorems]{beamer}
\setbeamerfont{headline}{size=\fontsize{8}{0}\selectfont}
\setbeamerfont{footline}{size=\fontsize{6}{0}\selectfont}
\usetheme{CambridgeUS}
\usefonttheme{serif}
\usepackage{xcolor}
\definecolor{sapphire}{rgb}{0.01, 0.01, 1}
\setbeamertemplate{enumerate subitem}{(\alph{enumii})}
\setbeamertemplate{enumerate item}{\arabic{enumi}.}
\setbeamertemplate{bibliography item}{\insertbiblabel}
%\setbeamertemplate{theorems}[numbered]
\usepackage{hanging}% http://ctan.org/pkg/hanging
\setbeamertemplate{footnote}{%
    \hangpara{2em}{1}%
    \makebox[2em][l]{\insertfootnotemark}\footnotesize\insertfootnotetext\par%
}

\usepackage{ifthen}
\usepackage{wrapfig}


\setbeamertemplate{navigation symbols}{}
\setbeamercolor{background canvas}{bg=black}
\setbeamercolor{normal text}{fg=white}


\setbeamercolor{structure}{fg=magenta}
\setbeamercolor{structure}{bg=black}


%\usepackage{enumitem}
\usepackage{mathtools, amssymb, amsfonts, amsthm, amsmath}
\usepackage{stmaryrd}
\usepackage{nccmath}
\usepackage{graphicx}
\usepackage{ragged2e}
%\usepackage{latex2e}
\usepackage{tikz}
\usepackage{pgfplots}
\usetikzlibrary{hobby}
\usetikzlibrary{decorations.pathreplacing, calligraphy}
\usetikzlibrary{decorations.markings}
\usetikzlibrary{patterns}
\usepackage{etoolbox}
\usepackage[mathscr]{eucal}
\usepackage{upgreek}


\newtagform{dots}{$ \cdots $(}{)}
\usetagform{dots}


\usepackage{caption}
\usepackage[labelformat=simple, labelsep=colon]{subcaption}
\setbeamertemplate{caption}[numbered]
\renewcommand{\thesubfigure}{\thefigure.(\alph{subfigure})}
\makeatletter
\renewcommand\p@subfigure{}
\makeatother


\makeatletter
\let\save@mathaccent\mathaccent
\newcommand\if@single[3]{%
    \setbox0\hbox{${\mathaccent"0362{#1}}^H$}%
    \setbox2\hbox{${\mathaccent"0362{\kern0pt#1}}^H$}%
    \ifdim\ht0=\ht2 #3\else #2\fi
}
%The bar will be moved to the right by a half of \macc@kerna, which is computed by amsmath:
\newcommand\rel@kern[1]{\kern#1\dimexpr\macc@kerna}
%If there's a superscript following the bar, then no negative kern may follow the bar;
%an additional {} makes sure that the superscript is high enough in this case:
\newcommand\widebar[1]{@ifnextchar^{{\wide@bar{#1}{0}}}{\wide@bar{#1}{1}}}
%Use a separate algorithm for single symbols:
\newcommand\wide@bar[2]{\if@single{#1}{\wide@bar@{#1}{#2}{1}}{\wide@bar@{#1}{#2}{2}}}
\newcommand*\wide@bar@[3]{%
    \begingroup
    \def\mathaccent##1##2{%
        %Enable nesting of accents:
        \let\mathaccent\save@mathaccent
        %If there's more than a single symbol, use the first character instead (see below):
        \if#32 \let\macc@nucleus\first@char \fi
        %Determine the italic correction:
        \setbox\z@\hbox{$\macc@style{\macc@nucleus}{}$}%
        \setbox\tw@\hbox{$\macc@style{\macc@nucleus}{}{}$}%
        \dimen@\wd\tw@
        \advance\dimen@-\wd\z@
        %Now \dimen@ is the italic correction of the symbol.
        \divide\dimen@ 3
        @tempdima\wd\tw@
        \advance@tempdima-\scriptspace
        %Now @tempdima is the width of the symbol.
        \divide@tempdima 10
        \advance\dimen@-@tempdima
        %Now \dimen@ = (italic correction / 3) - (Breite / 10)
        \ifdim\dimen@>\z@ \dimen@0pt\fi
        %The bar will be shortened in the case \dimen@<0 !
        \rel@kern{0.6}\kern-\dimen@
        \if#31
        \overline{\rel@kern{-0.6}\kern\dimen@\macc@nucleus\rel@kern{0.4}\kern\dimen@}%
        \advance\dimen@0.4\dimexpr\macc@kerna
        %Place the combined final kern (-\dimen@) if it is >0 or if a superscript follows:
        \let\final@kern#2%
        \ifdim\dimen@<\z@ \let\final@kern1\fi
        \if\final@kern1 \kern-\dimen@\fi
        \else
        \overline{\rel@kern{-0.6}\kern\dimen@#1}%
        \fi
    }%
    \macc@depth@ne
    \let\math@bgroup@empty \let\math@egroup\macc@set@skewchar
    \mathsurround\z@ \frozen@everymath{\mathgroup\macc@group\relax}%
    \macc@set@skewchar\relax
    \let\mathaccentV\macc@nested@a
    %The following initialises \macc@kerna and calls \mathaccent:
    \if#31
    \macc@nested@a\relax111{#1}%
    \else
    %If the argument consists of more than one symbol, and if the first token is
    %a letter, use that letter for the computations:
    \def\gobble@till@marker##1\endmarker{}%
    \futurelet\first@char\gobble@till@marker#1\endmarker
    \ifcat\noexpand\first@char A\else
    \def\first@char{}%
    \fi
    \macc@nested@a\relax111{\first@char}%
    \fi
    \endgroup
}
\makeatother


\newcommand{\R}{\mathbb{R}}
\newcommand{\N}{\mathbb{N}}
\newcommand{\Q}{\mathbb{Q}}
\newcommand{\Z}{\mathbb{Z}}
\newcommand{\C}{\mathbb{C}}
\renewcommand{\l}{\lambda}
\renewcommand{\L}{\Lambda}
\newcommand{\G}{\mathscr{G}}
\newcommand{\B}{\mathscr{B}}
\renewcommand{\d}{\delta}
\newcommand{\e}{\epsilon}
\renewcommand{\a}{\alpha}
\renewcommand{\b}{\beta}
\renewcommand{\r}{\mathrm{r}}
\newcommand{\n}{\mathrm{N}}
\newcommand{\g}{\gamma}
\renewcommand{\th}{\uptheta}
\let\emptyset\varnothing
\renewcommand{\qedsymbol}{$\blacksquare$}
\newcommand{\abs}[1]{\left\lvert #1 \right\rvert}
\newcommand{\ts}{\textstyle}
\newcommand{\func}[3]{#1\mathpunct{:}#2\to#3}
\newcommand{\mat}[1]{\left\llbracket #1 \right\rrbracket}
\newcommand{\scr}[1]{\mathscr{#1}}
\DeclareMathOperator{\image}{Im}
\newcommand{\comb}[2]{\begin{psmallmatrix}#1 \ #2\end{psmallmatrix}}
\renewcommand{\limsup}{\widebar{\lim},}
\renewcommand{\liminf}{\underline{\lim},}


%\usepackage[symbol]{footmisc}
%\renewcommand{\thefootnote}{\fnsymbol{footnote}}


\setbeamercolor{block title}{use=structure}
\setbeamercolor{block body}{parent=normal text,use=block title,fg=yellow,bg=black}


\makeatletter
\newenvironment<>{proofs}[1][\proofname]{\par\def\insertproofname{\scshape #1@addpunct{:}}\usebeamertemplate{proof begin}#2} {\usebeamertemplate{proof end}}


\newenvironment<>{proofc}{\setbeamertemplate{proof begin}{\begin{block}{}}\par\usebeamertemplate{proof begin}}  {\usebeamertemplate{proof end}}


\newenvironment<>{proofe}{\par\pushQED{\qed}\setbeamertemplate{proof begin}{\begin{block}{}}\usebeamertemplate{proof begin}}        {\popQED\usebeamertemplate{proof end}}
\makeatother


\makeatletter
\renewenvironment<>{proof}[1][\proofname]
{
    \par
    \def\insertproofname{\scshape #1@addpunct{:}}%
    \usebeamertemplate{proof begin}#2
    \parskip 1ex
    \pushQED{\qed}
}
{
    \popQED\usebeamertemplate{proof end}
}
\makeatother


\setbeamertemplate{blocks}[rounded][shadow=false]


%\setbeamercolor{block title proofs}{use=structure}
%\setbeamercolor{block body proofs}{parent=normal text,use=block title proof,fg=yellow,bg=black}
%
%\setbeamercolor{block title proofc}{use=structure}
%\setbeamercolor{block body proofc}{parent=normal text,use=block title proof,fg=yellow,bg=black}
%
%\setbeamercolor{block title proofe}{use=structure}
%\setbeamercolor{block body proofe}{parent=normal text,use=block title proof,fg=yellow,bg=black}


\BeforeBeginEnvironment{theorem}{
    \setbeamercolor{block title}{use=structure,fg=structure.fg,bg=pink!50!white}
    \setbeamercolor{block body}{fg=black, bg=pink!25!white}
}
\AfterEndEnvironment{theorem}{
    \setbeamercolor{block title}{use=structure,fg=structure.fg,bg=structure.fg!20!bg}
    \setbeamercolor{block body}{parent=normal text,use=block title,bg=block title.bg!50!bg, fg=black}
}


\BeforeBeginEnvironment{proposition}{
    \setbeamercolor{block title}{use=structure,fg=structure.fg,bg=pink!40!white}
    \setbeamercolor{block body}{fg=black, bg=pink!15!white}
}
\AfterEndEnvironment{proposition}{
    \setbeamercolor{block title}{use=structure,fg=structure.fg,bg=structure.fg!20!bg}
    \setbeamercolor{block body}{parent=normal text,use=block title,bg=block title.bg!50!bg, fg=black}
}


\BeforeBeginEnvironment{corollary}{
    \setbeamercolor{block title}{use=structure,fg=structure.fg,bg=pink!30!white}
    \setbeamercolor{block body}{fg=black, bg=pink!5!white}
}
\AfterEndEnvironment{corollary}{
    \setbeamercolor{block title}{use=structure,fg=structure.fg,bg=structure.fg!20!bg}
    \setbeamercolor{block body}{parent=normal text,use=block title,bg=block title.bg!50!bg, fg=black}
}


\BeforeBeginEnvironment{lemma}{
    \setbeamercolor{block title}{use=structure,fg=structure.fg,bg=pink!30!white}
    \setbeamercolor{block body}{fg=black, bg=pink!5!white}
}
\AfterEndEnvironment{lemma}{
    \setbeamercolor{block title}{use=structure,fg=structure.fg,bg=structure.fg!20!bg}
    \setbeamercolor{block body}{parent=normal text,use=block title,bg=block title.bg!50!bg, fg=black}
}


\BeforeBeginEnvironment{definition}{%
    \setbeamercolor{block title}{fg=red!75!black,bg=olive!40!white}
    \setbeamercolor{block body}{fg=black, bg=olive!20!white}
}
\AfterEndEnvironment{definition}{
    \setbeamercolor{block title}{use=structure,fg=structure.fg,bg=structure.fg!20!bg}
    \setbeamercolor{block body}{parent=normal text,use=block title,bg=block title.bg!50!bg, fg=black}
}


%%\setbeamercolor{background canvas}{bg=black}
%\setbeamercolor{proofs}{fg=black}
%\setbeamercolor{proofc}{fg=black}
%\setbeamercolor{proofe}{fg=black}
%\setbeamerfont{framesubtitle}{size=\large,font=\scshape}


%\setbeamertemplate{theorem}[ams style]
%\setbeamertemplate{figures}[numbered]


\setbeamertemplate{theorem}[ams style]
\setbeamertemplate{theorems}[numbered]


\makeatletter
\ifbeamer@countsect
\newtheorem{theorem}{\translate{Theorem}}[section]
\else
\newtheorem{theorem}{\translate{Theorem}}[section]
\fi
\newtheorem{corollary}{\translate{Corollary}}[theorem]
\newtheorem{lemma}[theorem]{\translate{Lemma}}
\newtheorem{proposition}[theorem]{\translate{Proposition}}
\newtheorem{problem}{\translate{Problem}}
\newtheorem{solution}{\translate{Solution}}


\theoremstyle{definition}
\newtheorem{definition}[theorem]{\translate{Definition}}
\newtheorem{definitions}[theorem]{\translate{Definitions}}


\newtheorem{exc}{\translate{Exercise}}
\newtheorem{excs}{\translate{Exercises}}


\newenvironment{lem}{\begin{lemma}}{\end{lemma}}
\newenvironment{thm}{\begin{theorem}}{\end{theorem}}
\newenvironment{cor}{\begin{corollary}}{\end{corollary}}
\newenvironment{defn}{\begin{definition}}{\end{definition}}
\newenvironment{prop}{\begin{proposition}}{\end{proposition}}
\makeatother


\makeatletter
\def\th@myexmpstyle{%
    \small % body font
    \setbeamercolor{block title}{use=structure,fg=magenta,bg=black}
    \setbeamercolor{block body}{fg=lime,bg=black}
    \def\inserttheoremblockenv{block}
}
\makeatother
\theoremstyle{myexmpstyle}
\newtheorem{example}{\translate{Example:}}
\newtheorem{examples}{\translate{Examples:}}


\makeatletter
\def\th@mystyle{%
    \normalfont % body font
    \setbeamercolor{block title}{use=structure}
    \setbeamercolor{block body}{bg=black, fg=cyan!40!white}
    \def\inserttheoremblockenv{block}
}
\makeatother
\theoremstyle{mystyle}
\newtheorem{Rem}{Remark:}
\newtheorem{rems}{Remarks:}


\newenvironment{Exmps}
{
    \begin{examples}\parskip 1ex
        \vspace{-1ex}\footnotesize
        \begin{enumerate}%[label=\arabic.]
        }
        {
        \end{enumerate}\normalsize
    \end{examples}

}


\newenvironment{exercises}
{
    \footnotesize
    \begin{excs}

        \vspace{-1ex}
        \begin{enumerate}%[label=\arabic.]
        }
        {
        \end{enumerate}
    \end{excs}
    \normalsize
}


\newenvironment{exmp}{\begin{example}\parskip 1ex \footnotesize}{\end{example}\normalsize}
\newenvironment{exercise}{\begin{exc}\footnotesize}{\end{exc}\normalsize}


\newenvironment{rem}{\begin{Rem}\parskip 1ex \vspace{-2ex}\footnotesize}{\end{Rem}\normalsize}


\newenvironment{Rems}
{


\begin{rems}
    \vspace{-1ex}\footnotesize
    \begin{enumerate}%[label=(\alph*)]
    }
    {
    \end{enumerate}\normalsize
\end{rems}  



}


%\usepackage{varioref}
\usepackage{hyperref}
\hypersetup
{
    colorlinks=true, %set true if you want colored links
    %   linktoc=all,     %set to all if you want both sections and subsections linked
    linkcolor=black,  %choose some color if you want links to stand out
    citecolor=teal,
}
\usepackage{cleveref}
\crefname{prop}{proposition}{propositions}
\crefname{proposition}{proposition}{propositions}


\crefname{lemma}{lemma}{lemmas}
\crefname{lem}{lemma}{lemmas}
\crefname{figure}{figure}{figures}
%\newcommand{\myref}[1]{\beamergotobutton{\cref{#1}}}
\newcommand{\link}[2]{\hyperlink{#1}{\beamerbutton{#2}}}
%       \newcommand{\Label}[1]{\hypertarget<.>{label#1}{}}


\bibliographystyle{amsalpha}


\apptocmd{\frame}{}{\justifying}{}
\parskip 1ex
%
%
%
\begin{document}


\makeatletter
\def\stringpleasehidethistitle{{please hide this title\ifnum\beamer@autobreakcount&gt;0\relax{}\space\usebeamertemplate*{frametitle continuation}\fi}}
\defbeamertemplate*{frametitle}{only sub}[1][left]
{
    \ifbeamercolorempty[bg]{frametitle}{}{\nointerlineskip}%
    \@tempdima=\textwidth%
    \advance\@tempdima by\beamer@leftmargin%
    \advance\@tempdima by\beamer@rightmargin%
    \begin{beamercolorbox}[sep=0.3cm,#1,wd=\the\@tempdima]{frametitle}
        \usebeamerfont{frametitle}%
        \vbox{}\vskip-1ex%
        \if@tempswa\else\csname beamer@fte#1\endcsname\fi%
        \ifx\insertframetitle\stringpleasehidethistitle%   check if magic word presents
        \else%                                             check if magic word presents
        \strut\insertframetitle\strut\par%               check if magic word presents
        \fi%                                               check if magic word presents
        {%
            \ifx\insertframesubtitle\@empty%
            \else%
            {\usebeamerfont{framesubtitle}\usebeamercolor[fg]{framesubtitle}\insertframesubtitle\strut\par}%
            \fi
        }%
        \vskip-1ex%
        \if@tempswa\else\vskip-.3cm\fi% set inside beamercolorbox... evil here...
    \end{beamercolorbox}%
}

\begin{frame}
    $ a^{\prime} $\\ % WORKS!
    $ a' $ % DOES NOT WORK!
\end{frame}



\end{document}
Subhajit Paul
  • 760
  • 1
    Since $a'$ is working in plain beamer without modifications, could you narrow down your extensive code example to the modification that causes the error? – Markus G. Aug 26 '20 at 17:29
  • I am sorry but I do not know which part of the preamble is causing the problem. – Subhajit Paul Aug 26 '20 at 17:47
  • Then I highly suggest you try to figure it out by selectively commenting out parts of the preamble in order to specify your question. I doubt that many people are willing to that for you seeing as you used a lot of custom modificiations. – Markus G. Aug 26 '20 at 17:52
  • Ok. Thanks for your suggestion. That is my last resort and will do that at the end. But I posted this problem in this forum hoping to get some help about modification of which portion (size or color or any particular block style) may lead to this problem. – Subhajit Paul Aug 26 '20 at 17:59
  • 2
    really it is your responsibility to cut down the example, you can't expect people to want to do that part removing unnecessary code that you have posted. – David Carlisle Aug 26 '20 at 18:30
  • Do you need hanging in beamer? – egreg Aug 26 '20 at 21:13

1 Answers1

6

The problem is the hanging package. See hanging package chokes on apostrophes for a solution.

I figured this out by noting the error that was occurring when running your document:

! TeX capacity exceeded, sorry [input stack size=5000].
'->\futurelet 
              \next \h@ngrqtest 
l.422     \end{frame}

Noting that \h@ngrqtest was the problem, I googled that (originally just to see what the offending package was) and turned up the error that you encountered.

Don Hosek
  • 14,078