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--Edit-- (rewrite the code that I use currently to produce margin left)

This is code that I try to make a new environment (leftwhitespace) of, instead of writing these code that create list with 1 item:

\begin{itemize} 
    \item[]
      line 1
      line 2
\end{itemize}

Want to create new environment leftwhitespace that will do as code above (add margin left):

\begin{leftwhitespace}
    line 1
    line 2
\end{leftwhitespace}
Kobi
  • 164
  • https://tex.stackexchange.com/a/56813/197451 – js bibra Nov 24 '19 at 02:45
  • I want create custom environment vs each time add \hangindent=1em or leftmargin=3cm etc... vs suggested in tex.stackexchange.com/a/56813/197451. (Compare to html and css I want create class that can be included each time that I want instead write inline css.) – Kobi Nov 24 '19 at 10:48
  • something like this-------- https://tex.stackexchange.com/questions/51548/leftalign-labels-with-enumitem?noredirect=1&lq=1 – js bibra Nov 24 '19 at 11:44
  • the link above for more complete cases, I just need to add \hangindent=1em for the paragraph and this custom paragraph. (Soo I try create newenvironment, but the code that I put not works, I need to correct my code inside newenvironment) – Kobi Nov 24 '19 at 12:13
  • please place the complete code above for a valuable reply starting with \documentclass and finishing with \end{document} – js bibra Nov 24 '19 at 12:20
  • Please see the Edit that I made - I add exactly the code that I currently use to produce margin left effect for all environment. – Kobi Nov 24 '19 at 19:06

2 Answers2

3

If I understand well what you want, changepage already has an environment for that:

\documentclass{article}
\usepackage{lipsum}
\usepackage{changepage}

\begin{document}

\lipsum[10]
\begin{adjustwidth}{3em}{0pt}
\lipsum[11-12]
\end{adjustwidth}

\lipsum[13]

\end{document}

enter image description here

Bernard
  • 271,350
  • ok, but how can be that code put inside newenvironment (I want to have default left margin) – Kobi Nov 24 '19 at 22:22
  • You should explain what you want to do exactly. This environment does not change the default lefty margin. It only changes the left margin inside itself. – Bernard Nov 24 '19 at 22:25
  • Hi, thanks for solution, how can I create custom environment for solution that you suggested: you suggested: \begin{adjustwidth}{3em}{0pt} \lipsum[11-12] \end{adjustwidth} -> (I want to write that) \begin{custom_adjustwidth} \lipsum[11-12] \end{custom_adjustwidth} (without each time write: {3em}{0pt}, I want to write {3em}{0pt} inside custom environment definition) – Kobi Nov 29 '19 at 01:15
  • You can add something like this to your preamble: \newenvironment{myenvt}{\adjustwidth{3em}{0pt}}{\endadjustwidth} and use it as \begin{myenvt} ... \end{myenvt} – Bernard Nov 29 '19 at 09:48
2

Does this solve your query:

enter image description here

enter image description here

enter image description here

\documentclass{article}
\usepackage{lipsum}

\newenvironment{hanglist}[1][\parindent]{%
    \begin{list}{}{%
        \setlength{\leftmargin}{#1}
        \setlength{\labelwidth}{0pt}
        \setlength{\labelsep}{0pt}
        \setlength{\itemindent}{-#1}}
    }{%
        \end{list}
    }

\def\D{\par\noindent\makebox[1em][l]{-- }\hangindent1em}

\newcommand{\detail}[1]{\par\noindent\hangindent=\mylen\hangafter1-- #1}
\newlength{\mylen}
\settowidth{\mylen}{-- }
\begin{document}
\begin{hanglist}[2cm]
\item\lipsum[1]
\item\lipsum[2]
\end{hanglist}

    Regular itemize
    \begin{hanglist}[1cm]
       \item First
       \item Second 
       \item Third
    \end{hanglist}

\subsubsection*{This is a header}
\D This is a detail
\D This is a detail that has too many words in it and consequently runs onto The next line of the page, and I want it to have a hanging indent.

\noindent\textbf{This is a header}
    \detail{This is a detail.}
    \detail{This is a detail that has too many words in it and consequently runs onto the next line of the page, and I want it to have a hanging indent.}
\end{document}
js bibra
  • 21,280