Capitalize first letter in list of acronyms using the acro package

acrocapitalization

How can I capitalize the first letter in the list of acronyms with the acro package without adjusting all acronym declarations? A solution that capitalizes all first letters of all words would also be acceptable.

What I have tried

acro allows setting individual formats for list entries.
However, \MakeUppercase affects all letters instead of only the first one (see MWE). \capitalisewords has not effect.

MWE

\documentclass{article}

\usepackage{acro}
%\usepackage{mfirstuc}  % for \capitalisewords
\DeclareAcronym{PC}{short=PC,long=personal computer}

\begin{document}

I am writing this on my \ac{PC}.

%\acsetup{format/list={\capitalisewords}}  % has no effect
\acsetup{format/list={\MakeUppercase}}  % not working as expected
\printacronyms

\end{document}

With \MakeUppercase:

Without \MakeUppercase:

Related questions do not apply

I have found several related questions, but none seems to apply.

Question
Capitalize the first letter in acronym list	solutions are specific to `acronym` package, or require redefinition of all acronym declarations (which I would like to avoid)
Capitalization of the first letter in acronym list	refers to Capitalize the first letter in acronym list
Capitalize first letter of each word when printing list of acronyms	solutions are specific to `glossaries` package or require redefinition of all acronym declarations
capitalisation and list of acronyms	solutions are specific to `glossaries` package
How to get acronyms entries in uppercase letters and capitalize only the first letter of the entries from the glossary?	specific to `glossaries` package

Best Answer

It looks like I haven't documented all options… :|

You have to set the option uppercase/list:

\documentclass{article}

\usepackage{acro}
\acsetup{
  uppercase/list
}

\DeclareAcronym{PC}{short=PC,long=personal computer}

\begin{document}

I am writing this on my \ac{PC}.

\printacronyms

\end{document}

If you want the first letter of each word capitalised, i.e., want to use mfirstuc then you have to set the option list/uppercse/cmd as well and use \ecapitalisewords:

\documentclass{article}

\usepackage{acro}
\usepackage{mfirstuc}
\acsetup{
  uppercase/list ,
  list/uppercase/cmd = \ecapitalisewords
}

\DeclareAcronym{PC}{short=PC,long=personal computer}

\begin{document}

I am writing this on my \ac{PC}.

\printacronyms

\end{document}

Update

With the most recent (2020) release of acronym things have changed (and may also change in the future). The right patch, current as of December 2020 is

\documentclass{article}
\usepackage{acronym}
\usepackage{etoolbox}
\makeatletter
\expandafter\patchcmd\csname AC@\AC@prefix{}@acro\endcsname{{#3}}{{\MakeUppercase #3}}{}{}
\expandafter\patchcmd\csname AC@\AC@prefix{}@acro\endcsname{{#3}}{{\MakeUppercase #3}}{}{}
\makeatother

\begin{document}
\begin{acronym}
\acro{DC}{direct current}
\end{acronym}

Batteries run on \ac{DC}.
\end{document}

[Tex/LaTex] Capitalising the first letter of an acronym

This is a follow-up to Egreg's answer, basically the full set of \Ac?? commands. Two points to note first:

Somewhere was a stray trailing space that affected \Acfp (and the first use of \Acp) - There was a space before the closing bracket. Oddly, it broke the original \acfp and \acp as well, which I'm sure to a finer mind than mine would indicate roughly where in the redefinitions it is. I just terminated pretty much all the lines with a % without paying any attention to what they did.
Note the use of \robustify (from etoolbox), which is required if you want to use acronyms in headings (perhaps more likely now they can start with caps)

I don't pretend to understand the code, just that having done Egreg's "exercise for the reader" and found a couple of extra complexities along the way I thought I'd share.

% Extend acronym package with first letter caps
\makeatletter
\newif\ifAC@uppercase@first%
\def\Aclp#1{\AC@uppercase@firsttrue\aclp{#1}\AC@uppercase@firstfalse}%
\def\AC@aclp#1{%
  \ifcsname fn@#1@PL\endcsname%
    \ifAC@uppercase@first%
      \expandafter\expandafter\expandafter\MakeUppercase\csname fn@#1@PL\endcsname%
    \else%
      \csname fn@#1@PL\endcsname%
    \fi%
  \else%
    \AC@acl{#1}s%
  \fi%
}%
\def\Acp#1{\AC@uppercase@firsttrue\acp{#1}\AC@uppercase@firstfalse}%
\def\AC@acp#1{%
  \ifcsname fn@#1@PL\endcsname%
    \ifAC@uppercase@first%
      \expandafter\expandafter\expandafter\MakeUppercase\csname fn@#1@PL\endcsname%
    \else%
      \csname fn@#1@PL\endcsname%
    \fi%
  \else%
    \AC@ac{#1}s%
  \fi%
}%
\def\Acfp#1{\AC@uppercase@firsttrue\acfp{#1}\AC@uppercase@firstfalse}%
\def\AC@acfp#1{%
  \ifcsname fn@#1@PL\endcsname%
    \ifAC@uppercase@first%
      \expandafter\expandafter\expandafter\MakeUppercase\csname fn@#1@PL\endcsname%
    \else%
      \csname fn@#1@PL\endcsname%
    \fi%
  \else%
    \AC@acf{#1}s%
  \fi%
}%
\def\Acsp#1{\AC@uppercase@firsttrue\acsp{#1}\AC@uppercase@firstfalse}%
\def\AC@acsp#1{%
  \ifcsname fn@#1@PL\endcsname%
    \ifAC@uppercase@first%
      \expandafter\expandafter\expandafter\MakeUppercase\csname fn@#1@PL\endcsname%
    \else%
      \csname fn@#1@PL\endcsname%
    \fi%
  \else%
    \AC@acs{#1}s%
  \fi%
}%
\edef\AC@uppercase@write{\string\ifAC@uppercase@first\string\expandafter\string\MakeUppercase\string\fi\space}%
\def\AC@acrodef#1[#2]#3{%
  \@bsphack%
  \protected@write\@auxout{}{%
    \string\newacro{#1}[#2]{\AC@uppercase@write #3}%
  }\@esphack%
}%
\def\Acl#1{\AC@uppercase@firsttrue\acl{#1}\AC@uppercase@firstfalse}
\def\Acf#1{\AC@uppercase@firsttrue\acf{#1}\AC@uppercase@firstfalse}
\def\Ac#1{\AC@uppercase@firsttrue\ac{#1}\AC@uppercase@firstfalse}
\def\Acs#1{\AC@uppercase@firsttrue\acs{#1}\AC@uppercase@firstfalse}
\robustify\Aclp
\robustify\Acfp
\robustify\Acp
\robustify\Acsp
\robustify\Acl
\robustify\Acf
\robustify\Ac
\robustify\Acs
\makeatother

EDIT: If you want to define your acronyms using \acro in an acronym environment, the above code doesn't give you the caps, because the line that stores the acronym is in a different macro and doesn't get replaced with the rather neat definition that Egreg came up with.

The solution is to also patch (well, overwrite) acro:

\def\AC@@acro#1[#2]#3{%
  \ifAC@nolist%
  \else%
  \ifAC@printonlyused%
    \expandafter\ifx\csname acused@#1\endcsname\AC@used%
       \item[\protect\AC@hypertarget{#1}{\acsfont{#2}}] #3%
          \ifAC@withpage%
            \expandafter\ifx\csname r@acro:#1\endcsname\relax%
               \PackageInfo{acronym}{%
                 Acronym #1 used in text but not spelled out in
                 full in text}%
            \else%
               \dotfill\pageref{acro:#1}%
            \fi\\%
          \fi%
    \fi%
 \else%
    \item[\protect\AC@hypertarget{#1}{\acsfont{#2}}] #3%
 \fi%
 \fi%
 \begingroup
    \def\acroextra##1{}%
    \@bsphack
    \protected@write\@auxout{}%
       {\string\newacro{#1}[\string\AC@hyperlink{#1}{#2}]{\AC@uppercase@write #3}}%
    \@esphack
  \endgroup}

Edit 2: Note that this 2nd block needs to be inserted into the first block before the last (\makeatother) line.

Best Answer

Related Solutions

[Tex/LaTex] Capitalize the first letter in acronym list

Update

[Tex/LaTex] Capitalising the first letter of an acronym

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