[Tex/LaTex] Prevent page break without removing vertical space

listspage-breakingparagraphsspacing

I have a single sentence paragraph that introduces a list, and LaTeX is trying to insert a page break between the paragraph and its list, which I find unacceptable. I can prevent that page break with \@nobreaktrue, but then I lose the vertical space between the paragraph and its list. How can I prevent a page break between the paragraph and its list without losing the normal vertical space I'd expect there?

MWE:

\documentclass{article}

\makeatletter
\newcommand{\reallynopagebreak}{\par\@nobreaktrue\nopagebreak}
\makeatother

\begin{document}

Paragraph introducing list:\reallynopagebreak{}

\begin{itemize}
\item list
\end{itemize}

\end{document}

Unwanted result, no space between paragraph and list:

enter image description here

For now I've just done \vspace{\baselineskip} at the end of the paragraph, but surely that's not the best way?

Best Answer

I think the answer I'd prefer today is lockstep's answer for preventing page break before itemize. Here's my MWE above adapted to demonstrate this:

\documentclass{article}

\usepackage{lipsum}

\begin{document}

% Provide enough content such that LaTeX would normally break between
% "Paragraph introducing list:" and the actual list.  Please forgive
% my imperial units.
\vspace*{1.1in}
\lipsum[1-4]

Paragraph introducing list:

\begingroup
\makeatletter
% Strongly encourage LaTeX not to break before this list.
% http://tex.stackexchange.com/a/46795/1680
\@beginparpenalty=10000
\makeatother
\begin{itemize}
\item list
\end{itemize}
\endgroup

\end{document}
Related Question