在下面的代码中，我期望\@gobble替换\@makechapterhead内部\@chapter，从而吞噬其参数（#2），以便禁用相关功能（创建章节标题）。但事实并非如此。为什么不呢？为了进行比较，显示了另一个符合要求的补丁。
\documentclass{report}
% <Commented out until this is fixed---------------------------------------------
% https://tex.stackexchange.com/questions/511782/does-titleps-conflict-with-babel
%\usepackage[T1]{fontenc} % due to warning from babel
%\usepackage[french]{babel}----------------------------------------------------->
\usepackage{lipsum}
\usepackage{titleps}
%==============================================================
% REQUIREMENT: \chapter{<title>} does not display anything
\usepackage{xpatch}
\tracingpatches
\makeatletter
% <PATCH No 1
% *.out: "search pattern found in replacement text"
\patchcmd{\@chapter}{\@makechapterhead}
{\@gobble}%>
%
%% <PATCH No 2
%\patchcmd{\@chapter}
%{\if@twocolumn
% \@topnewpage[\@makechapterhead{#2}]%
% \else
% \@makechapterhead{#2}%
% \@afterheading
% \fi}%>
{}
{}
\makeatother%===================================================
\begin{document}
% REQUIREMENT translates here to: Contents\\1 Intro .......... 2
\tableofcontents
\chapter{Intro}
% REQUIREMENT translates here to: 'Chapter 1 \\ Intro' absent from top of the page.
% PATCH No 1: not met
% PATCH No 2: met
\lipsum[1]
% report.cls---------------------------------------------------------------------------
%\newcommand\chapter{\if@openright\cleardoublepage\else\clearpage\fi
% \thispagestyle{plain}%
% \global\@topnum\z@
% \@afterindentfalse
% \secdef\@chapter\@schapter}
%\def\@chapter[#1]#2{\ifnum \c@secnumdepth >\m@ne
% \refstepcounter{chapter}%
% \typeout{\@chapapp\space\thechapter.}%
% \addcontentsline{toc}{chapter}%
% {\protect\numberline{\thechapter}#1}%
% \else
% \addcontentsline{toc}{chapter}{#1}%
% \fi
% \chaptermark{#1}%
% \addtocontents{lof}{\protect\addvspace{10\p@}}%
% \addtocontents{lot}{\protect\addvspace{10\p@}}%
% \if@twocolumn
% \@topnewpage[\@makechapterhead{#2}]%
% \else
% \@makechapterhead{#2}%
% \@afterheading
% \fi}
%\def\@makechapterhead#1{%
% \vspace*{50\p@}%
% {\parindent \z@ \raggedright \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@
% }}
% -------------------------------------------------------------------------------------
\end{document}
答案1
正如@phelype-oleinik 所暗示的：
\documentclass{report}
\usepackage{lipsum}
\usepackage{titleps}
%==============================================================
% REQUIREMENT: \chapter{<title>} does not display anything
\usepackage{xpatch}
%\usepackage{etoolbox}
\tracingpatches
\makeatletter
\patchcmd{\@chapter}{\@makechapterhead}
{\@gobble}
{}
{}
\patchcmd{\@chapter}{\@makechapterhead}
{\@gobble}
{}
{}
\makeatother%===================================================
\begin{document}
% REQUIREMENT translates here to: toc show TOC\\1 Intro .......... 2
\tableofcontents
\chapter{Intro}
\lipsum[1]
\end{document}