Cfrgtkky

With setlist option of package enumitem I'm trying to add some text at the end of an enumerated list. I'm also trying to center some part of this text, but some extra vertical space gets inserted. Here is my code:

documentclass{article}

usepackage{enumitem}





newlist{mylist}{enumerate}{3}

setlist*[mylist]{label=arabic*}

setlist*[mylist]{after*=endgraf

bigskip

bigskip

Some text some text

begin{center}

some centered text

end{center}

Some text some text

}



begin{document}

setlength{topsep}{0pt}

setlength{parskip}{0pt}

With enumerate

begin{mylist}

item First item

end{mylist}



Without enumerate (which looks like the thing I want to have):



1 First itempar

bigskip

bigskip

Some text some text

begin{center}

some centered text

end{center}

Some text some text



end{document}

(topsep and parskip are set to 0 so extra space makes more difference)
I suppose long command inserted with after= to the end of the list generates error. Is there a way to put long command there properly?

I can force good-looking output with some negative vspace but I hope there is some more elegant solution.

EDIT: Thanks to comment by Phelype Oleinik I put endgraf where I couldn't use par. Spacing is now better, but still there is clearly some extra vertical space which I can't remove.

It's simpler if you use a macro for after:

documentclass{article}

usepackage{enumitem}



newlist{mylist}{enumerate}{3}

setlist*[mylist]{label=arabic*}

setlist*[mylist]{after*=addtext}



newcommand{addtext}{%

  vspace*{bigskipamount}

  begin{center}

  setlength{parskip}{0pt}% remove the vertical space

  Some text some texthspace*{fill}par

  some centered textpar

  Some text some texthspace*{fill}

  end{center}

}



begin{document}



begin{mylist}

item First item

item Second item

end{mylist}



end{document}

Is this what you want (I coloured the after part to visualise):

 documentclass{article}

usepackage{enumitem}

usepackage{changepage, xcolor}

usepackage[showframe]{geometry}

newlengthlabelwd

settowidth{labelwd}{0}

newlist{mylist}{enumerate}{3}

setlist*[mylist]{label=arabic*,start = 6}

setlist*[mylist]{after*=endgraf

bigskip

bigskip

hspace*{dimexprleftmargini-labelsep-labelwdrelax}color{red}Some text some text \

nullhfill some centered text hfillnull \

Some text some text

}



begin{document}

setlength{topsep}{0pt}

setlength{parskip}{0pt}

With enumerate

begin{mylist}

item First item

end{mylist}



Without enumerate (which looks like the thing I want to have):



1 First itempar

bigskip

bigskip

Some text some text

begin{center}

some centered text

end{center}

Some text some text



end{document}