使用 titlesec 和 geometry 自定义章节编号：编号超出页面边框

Question

我使用了 titlesec 包和 geometry 包来获得以下章节样式（请注意，我使用的是 XeLaTeX）：

这可行，但是我无法按我想要的方式对齐章节编号。此外，具有两个编号的章节超出了页面边界：

这就是我想要的格式：

章节编号应与标题规则右对齐。这是现在的 MWE：

\documentclass[twoside,a4paper,11pt,fleqn,openright]{report}

\usepackage{lipsum}

\usepackage{subfiles}
\usepackage{ifxetex,ifluatex}

% Fonts
\usepackage{mathspec}

\makeatletter % undo the wrong changes made by mathspec
\let\RequirePackage\original@RequirePackage
\let\usepackage\RequirePackage
\makeatother

\ifdefined\suppressfontnotfounderror
  \expandafter\let\csname xetex_suppressfontnotfounderror:D\endcsname
    \suppressfontnotfounderror
\else
  \expandafter\let\csname xetex_suppressfontnotfounderror:D\endcsname
    \luatexsuppressfontnotfounderror
\fi

\defaultfontfeatures{Ligatures=TeX,Scale=MatchLowercase}
\defaultfontfeatures{Ligatures=TeX,Numbers=OldStyle,Scale=MatchLowercase}
\setmainfont{Linux Libertine O}
\setsansfont{Linux Biolinum O}
\setmonofont[Mapping=tex-ansi,Path=../fonts/,UprightFont=InconsolataRegular.ttf,BoldFont=InconsolataBold.ttf]{InconsolataRegular.ttf}
\setmathfont[math-style=ISO, bold-style=ISO]{TeX Gyre Pagella Math}

% use upquote if available, for straight quotes in verbatim environments
\IfFileExists{upquote.sty}{\usepackage{upquote}}{}

% use microtype if available
\usepackage[final=true]{microtype}
\microtypecontext{spacing=french}
\UseMicrotypeSet[protrusion]{basicmath}

\usepackage[a4paper,includeheadfoot,margin=2.5cm]{geometry}

\usepackage{xcolor}

\definecolor{mydarkestpurple}{rgb}{0.18,0.035,0.38}

\def\myrulewidth{0.4mm}
\usepackage[explicit]{titlesec}

\titleformat{\chapter}[display]%
{\relax}{\mbox{}\marginpar{\vspace*{-\baselineskip}\color{mydarkestpurple}\fontsize{78}{94}\selectfont\thechapter}}{0pt}%
    {\Huge\bfseries\color{mydarkestpurple} #1}[\normalsize\vspace*{.8\baselineskip}\titleline{\color{mydarkestpurple}\titlerule}]% 
\titlespacing*{\chapter}{0pt}{0cm}{1cm}

\begin{document}

\chapter{One}
\lipsum[1]
\setcounter{chapter}{9}
\chapter{Ten}
\lipsum[2]


\end{document}

有人可以帮忙吗？

Answer 1

这是可以满足您的要求的代码。您确实不希望章节编号位于页边距中，而是位于右页边距的左侧，因此我使用了\fillefttitlesec 中的命令。

我不得不删除该路径Inconsolata（我没有该路径；我用 MiKTeX 附带的版本替换了它，并且它在路径中）。

\documentclass[twoside,a4paper,11pt,fleqn,openright]{report}

\usepackage{lipsum}
\usepackage{subfiles}
\usepackage{ifxetex,ifluatex}

% Fonts
\usepackage{mathspec}

\makeatletter % undo the wrong changes made by mathspec
\let\RequirePackage\original@RequirePackage
\let\usepackage\RequirePackage
\makeatother

\ifdefined\suppressfontnotfounderror
  \expandafter\let\csname xetex_suppressfontnotfounderror:D\endcsname
    \suppressfontnotfounderror
\else
  \expandafter\let\csname xetex_suppressfontnotfounderror:D\endcsname
    \luatexsuppressfontnotfounderror
\fi

\defaultfontfeatures{Ligatures=TeX,Scale=MatchLowercase}
\defaultfontfeatures{Ligatures=TeX,Numbers=OldStyle,Scale=MatchLowercase}
\setmainfont{Linux Libertine O}
\setsansfont{Linux Biolinum O}
\setmonofont[Mapping=tex-ansi,UprightFont=Inconsolatazi4-Regular.otf,BoldFont=Inconsolatazi4-Bold.otf]{InconsolataRegular.ttf}

\setmathfont[math-style=ISO, bold-style=ISO]{TeX Gyre Pagella Math}

% use upquote if available, for straight quotes in verbatim environments
\IfFileExists{upquote.sty}{\usepackage{upquote}}{}

% use microtype if available
\usepackage[final=true]{microtype}
\microtypecontext{spacing=french}
\UseMicrotypeSet[protrusion]{basicmath}

\usepackage[a4paper,includeheadfoot,margin=2.5cm]{geometry}

\usepackage{xcolor}

\definecolor{mydarkestpurple}{rgb}{0.18,0.035,0.38}

\def\myrulewidth{0.6mm}
\usepackage[explicit]{titlesec}

\titleformat{\chapter}[block]%
{\color{mydarkestpurple}}{}{0pt}%
    {\parbox[b]{0.75\textwidth}{\Huge\bfseries#1}\hfill \fontsize{78}{94}\selectfont\thechapter}[\normalsize\vspace*{.8\baselineskip}{\titlerule[\myrulewidth]}]%
\titlespacing*{\chapter}{0pt}{0cm}{1cm}

\begin{document}

\chapter{One }
\lipsum[1]
\setcounter{chapter}{9}
\chapter{Ten.\\ Tweedledum And Tweedledee}
\lipsum[2]

\end{document}