KOMA-Script: Making Preface Page Like Chapter

Question

I am finishing setting up my thesis LaTeX document using scrreprt class.

I am trying to add the final touches which include a List of Acronyms. Now I want it to look exactly the same as the ToC does in style as far as the title "List of Acronyms" goes. I have managed to do this by using \chapter*{List of Acronyms} whereby it uses the chapter style without printing a chapter page, and here is where the problem arises, when I do this the page numbering is automatically switched to arabic; I wish for the LoA to be in the preface which should all be in roman page numbering.

How can I use the exact same style of the chapter* font for the title (which also omits it from the ToC which is fine) without losing the roman page numbering?

Please find below my MWE with included an acronym (side note if someone could also direct me to a post which explains how to customise the \printacronyms format I would be very grateful).

\documentclass[
bibliography=totoc,
headings=big,
captions=tableheading,
chapterprefix=true% like in standard class "report"
]{scrreprt}
\usepackage[left=2cm,right=2cm,top=2.5cm,bottom=3cm]{geometry}
\usepackage{xcolor}
\usepackage{graphicx}
\usepackage{minitoc}
\usepackage{setspace}
\usepackage{lmodern}
\usepackage{notoccite}
\usepackage{acro}
\usepackage{hyperref}

\setcounter{secnumdepth}{3} % number subsubsections
\setcounter{tocdepth}{3} % list subsubsections

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% ACRONYM DEFINITION
\DeclareAcronym{pwr}{
short = PWR ,
short-plural = s ,
long = Pressurised Water Reactor ,
long-plural = s ,
class = reactors ,
}

\begin{document}

\pagenumbering{roman}

\cleardoublepage
\dominitoc
\pdfbookmark[1]{Contents}{}
\tableofcontents
\cleardoublepage

%%%%%%%%%%%%%%%%%%%%%%%%%%%%% LIST OF ACRONYMS
\chapter*{List of Acronyms}

\addcontentsline{toc}{section}{List of Acronyms}

\printacronyms[include-classes=reactors,name=Reactor Acronyms]

\pagestyle{headings}
\pagenumbering{arabic}

%%%%%%%%%%%%%% Chapter Style Controls
\addtokomafont{chapterprefix}{\raggedleft \linespread{1}}
\addtokomafont{chapter}{\fontsize{35}{30}\selectfont}
\addtokomafont{section}{\fontsize{20}{11}\selectfont}
\addtokomafont{subsection}{\fontsize{18}{11}\selectfont}
\addtokomafont{subsubsection}{\fontsize{16}{11}\selectfont}

\renewcommand*{\chapterformat}{%
\mbox{\scalebox{0.80}{\chapappifchapterprefix{\nobreakspace}}%
\scalebox{2.5}{\color{gray}\thechapter\autodot}\enskip}}

\chapter{Testing}

Pasting an acronym \ac{pwr}

\end{document}

Answer 1

Add a \clearpage (or \cleardoublepage) command after \printacronyms; otherwise, the \pagenumbering{arabic} will take effect too soon.

As Speravir mentions in his comment, the KOMA classes scrbook and scrreprt offer \addchap, (and a starred version \addchap*) which can produce unnumbered chapters which show up in the table of contents and in the running heading (the starred version doesn't show up in the headings), so instead of

\chapter*{List of Acronyms}
\addcontentsline{toc}{chapter}{List of Acronyms}

you can simply use, for example,

\addchap{List of Acronyms}

The code:

\documentclass[
bibliography=totoc,
headings=big,
captions=tableheading,
chapterprefix=true% like in standard class "report"
]{scrreprt}
\usepackage[left=2cm,right=2cm,top=2.5cm,bottom=3cm]{geometry}
\usepackage{xcolor}
\usepackage{graphicx}
\usepackage{minitoc}
\usepackage{setspace}
\usepackage{lmodern}
\usepackage{notoccite}
\usepackage{acro}
\usepackage{hyperref}

\setcounter{secnumdepth}{3} % number subsubsections
\setcounter{tocdepth}{3} % list subsubsections

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% ACRONYM DEFINITION
\DeclareAcronym{pwr}{
short = PWR ,
short-plural = s ,
long = Pressurised Water Reactor ,
long-plural = s ,
class = reactors ,
}

\begin{document}

\pagenumbering{roman}

\cleardoublepage %<- seems not necessary
\dominitoc
\pdfbookmark[1]{Contents}{}
\tableofcontents
\cleardoublepage

%%%%%%%%%%%%%%%%%%%%%%%%%%%%% LIST OF ACRONYMS
%\chapter*{List of Acronyms}
%\addcontentsline{toc}{chapter}{List of Acronyms}
\addchap{List of Acronyms}
\printacronyms[include-classes=reactors,name=Reactor Acronyms]
\clearpage

\pagestyle{headings}
\pagenumbering{arabic}

%%%%%%%%%%%%%% Chapter Style Controls
\addtokomafont{chapterprefix}{\raggedleft \linespread{1}}
\addtokomafont{chapter}{\fontsize{35}{30}\selectfont}
\addtokomafont{section}{\fontsize{20}{11}\selectfont}
\addtokomafont{subsection}{\fontsize{18}{11}\selectfont}
\addtokomafont{subsubsection}{\fontsize{16}{11}\selectfont}

\renewcommand*{\chapterformat}{%
\mbox{\scalebox{0.80}{\chapappifchapterprefix{\nobreakspace}}%
\scalebox{2.5}{\color{gray}\thechapter\autodot}\enskip}}

\chapter{Testing}

Pasting an acronym \ac{pwr}

\end{document}

Section 7.3. Options Regarding the List of the package decumentation has some explanations regarding options and customization of the list.