[Tex/LaTex] Spacing between multiple lines of an item in itemize or enumerate

#enumerateenumitemitemizeline-spacing

\documentclass[11pt]{article}
\usepackage{enumitem}
\begin{document}
Some text here.
\begin{enumerate}
\item a
\item b
\item c
\end{enumerate}
Some more text.
\end{document}

Assume item a contains multiple lines of text. How can I increase the spacing between each line in item a ?

Best Answer

The before key allows to change the \baselineskip:

\documentclass[11pt]{article}
\usepackage{enumitem}
\usepackage{setspace}
\begin{document}
Some text here.
\begin{enumerate}[before=\setlength{\baselineskip}{20pt},itemsep=-10pt]
\item a more text more text more text more text more text more text more text more text more text more text more text more text more text more text 
\item b
\item c
\end{enumerate}
Some more text.
\end{document}

Related Solutions

[Tex/LaTex] Enumerate and itemize undefined + captions not working

Regarding your caption problem. I don't get any error. I would suspect that your caption.sty is too old.

I have caption.sty 2010/01/09 v3.1m Customizing captions (AR)

[Tex/LaTex] How to reduce vertical spacing between proof environment and enumerate environment

You can simply redefine proof

in this way

\makeatletter% q.e.d. adjustment (posted by ???)
\renewenvironment{proof}[1][Proof]{\par
  \pushQED{\qed}%
  \normalfont\topsep2\p@\@plus2\p@\relax
  \trivlist
\item[\hskip\labelsep
  \sffamily\bfseries #1]\ignorespaces\mbox{}\vskip0pt\noindent
}{%
  \popQED\endtrivlist\@endpefalse
}
\makeatother

and use topsep=0 when calling enumerate.

MWE

\documentclass{scrartcl}

\usepackage[american]{babel}
\usepackage{enumitem}
\usepackage{etoolbox}
\usepackage{amsthm}


% proofs
% see http://tex.stackexchange.com/questions/66739/how-to-suppress-vertical-space-between-proof-environment-heads-and-itemize-envir/makeatletter
\makeatletter% q.e.d. adjustment (posted by ???)
\renewenvironment{proof}[1][Proof]{\par
  \pushQED{\qed}%
  \normalfont\topsep2\p@\@plus2\p@\relax
  \trivlist
\item[\hskip\labelsep
  \sffamily\bfseries #1]\ignorespaces\mbox{}\vskip0pt\noindent
}{%
  \popQED\endtrivlist\@endpefalse
}
\makeatother

% suppress vertical spacing (for itemize) when newtheorems start with an environment
% see http://tex.stackexchange.com/questions/122018/weird-vertical-spacing-problem-with-adjusted-enumerate

\begin{document}
Some text
\begin{proof}
  \begin{enumerate}[topsep=0pt]
  \item Proof ...
  \end{enumerate}
\end{proof}

Some text
\begin{proof}
Some text
\end{proof}
\end{document}

Output

enter image description here

EDIT

A solution without enumitem

\documentclass{scrartcl}

\usepackage[american]{babel}
\usepackage{etoolbox}
\usepackage{amsthm}

\newif\ifstarttheorem

% proofs
% see http://tex.stackexchange.com/questions/66739/how-to-suppress-vertical-space-between-proof-environment-heads-and-itemize-envir/makeatletter
\makeatletter% q.e.d. adjustment (posted by ???)
\renewenvironment{proof}[1][Proof]{\par
  \pushQED{\qed}%
  \normalfont\topsep2\p@\@plus2\p@\relax
  \trivlist
\item[\hskip\labelsep
  \sffamily\bfseries #1]\ignorespaces\global\starttheoremtrue\mbox{}\vskip0pt\noindent
}{%
  \popQED\endtrivlist\@endpefalse
}
\makeatother

% suppress vertical spacing (for itemize) when newtheorems start with an environment
% see http://tex.stackexchange.com/questions/122018/weird-vertical-spacing-problem-with-adjusted-enumerate
\makeatletter
\appto\enumerate{%
  \ifstarttheorem
    \vspace{-.5\baselineskip}
  \fi
  \global\starttheoremfalse
}
\preto\endenumerate{\global\starttheoremfalse}
\makeatother

\begin{document}
Some text
\begin{proof}
  \begin{enumerate}
  \item Proof ...
  \end{enumerate}
\end{proof}

Some text
\begin{proof}
Some text
\end{proof}
\end{document}

Output: