报告类中具有不同字体大小的多行章节

Question

我正在使用该report课程来编写一本书，并希望将章节标题分布在多行上，并能够为每行选择字体大小。

\documentclass{report}


\makeatletter
\def\@makechapterhead#1{%
  %%%%\vspace*{50\p@}% %%% removed!
  {\parindent \z@ \center \normalfont
    \ifnum \c@secnumdepth >\m@ne
        \huge\bfseries \@chapapp\space \thechapter
        \par\nobreak
        \vskip 20\p@
    \fi
    \interlinepenalty\@M
    \Huge \bfseries #1\par\nobreak
    \vskip 40\p@
  }}
\def\@makeschapterhead#1{%
  %%%%%\vspace*{50\p@}% %%% removed!
  {\parindent \z@ \center
    \normalfont
    \interlinepenalty\@M
    \Huge \bfseries  #1\par\nobreak
    \vskip 40\p@
  }}
\makeatother


\begin{document}

\chapter*{\textbf{ŚirīharṣaMahākaviPraṇītam\\Naiṣadhīyacaritam\\Saralavyākhyāsahitam\\prathamaḥ sargaḥ}}

%Want to set different font sizes for different lines as below:
{\small ŚirīharṣaMahākaviPraṇītam}\\
{\Huge Naiṣadhīyacaritam}\\
Saralavyākhyāsahitam\\
{\Large prathamaḥ sargaḥ}


\end{document}

这该怎么做？我不想更改，documentclass因为这可能会导致我的文档（已有约 600 页）发生其他未知更改。

Answer 1

您几乎自己已经给出了答案。

% chapterprob.tex  SE 596976
\documentclass{report}

\makeatletter
\def\@makechapterhead#1{%
  %%%%\vspace*{50\p@}% %%% removed!
  {\parindent \z@ \center \normalfont
    \ifnum \c@secnumdepth >\m@ne
        \huge\bfseries \@chapapp\space \thechapter
        \par\nobreak
        \vskip 20\p@
    \fi
    \interlinepenalty\@M
    \Huge \bfseries #1\par\nobreak
    \vskip 40\p@
  }}
\def\@makeschapterhead#1{%
  %%%%%\vspace*{50\p@}% %%% removed!
  {\parindent \z@ \center
    \normalfont
    \interlinepenalty\@M
    \Huge \bfseries  #1\par\nobreak
    \vskip 40\p@
  }}
\makeatother

\begin{document}

%\chapter*{\textbf{ŚirīharṣaMahākaviPraṇītam\\Naiṣadhīyacaritam\\Saralavyākhyāsahitam\\prathamaḥ sargaḥ}}

\chapter*{\textbf{{\small ŚirīharṣaMahākaviPraṇītam}\\
 {\Huge Naiṣadhīyacaritam}\\
 {\normalsize Saralavyākhyāsahitam}\\
 {\Large prathamaḥ sargaḥ}}}

%Want to set different font sizes for different lines as below:
{\small ŚirīharṣaMahākaviPraṇītam}\\
{\Huge Naiṣadhīyacaritam}\\
Saralavyākhyāsahitam\\
{\Large prathamaḥ sargaḥ}

\end{document}