enumitem: using label for a defined item

Question

Whenever I try to label an item that is defined, it never seems to work. For example, consider the following:

\documentclass{article}
\usepackage{enumitem}
\usepackage[noabbrev]{cleveref}
\begin{document}
\begin{enumerate}
  \item[3.1]
  \item[6.3]
  \label{prob63}
  \item
    From \cref{prob63}, some statement
\end{enumerate}
\end{document}

score 5 · Accepted Answer · answered Sep 26 '14 at 21:20

5

I think this may be partly because one can use non-counter-style entries when using the optional argument to \item[<stuff>]. So, in that regard, you can set this manually so that the reference appears as you want:

enter image description here

\documentclass{article}
\usepackage{enumitem}
\usepackage[noabbrev]{cleveref}
\makeatletter
\newcommand{\setcreflabel}[1]{%
  \protected@edef\cref@currentlabel{%
    [\@tempa][#1][\cref@result]%
    #1}}%
\makeatother
\begin{document}
\begin{enumerate}
  \item \label{prob1}
  \item[6.3] \setcreflabel{6.3}\label{prob63}
  \item
    From \cref{prob63}, some statement; From \cref{prob1}, some statement.
\end{enumerate}
\end{document}

The motivation here is to update \cref@currentlabel in an analogous way to how \refstepcounter updates \@currentlabel. In that way, when you issue \label, the correct reference content is written to the .aux:

\relax 
\newlabel{prob1}{{1}{1}}
\newlabel{prob1@cref}{{[enumi][1][]1}{1}}
\newlabel{prob63}{{1}{1}}
\newlabel{prob63@cref}{{[enumi][6.3][]6.3}{1}}

answered Sep 26 '14 at 21:20

Werner

603,163

I am seeing From ?? 6.3 and the error message is still undefined label. – dustin Sep 27 '14 at 14:38
@dustin: When you compile my minimal example? – Werner Sep 27 '14 at 15:08
In my real document where I had this issue. – dustin Sep 27 '14 at 15:13
@dustin: Are you calling \setcreflabel{<something>}? – Werner Sep 27 '14 at 15:14
Yes, I placed that before the \label{} as in the example. – dustin Sep 27 '14 at 15:15
@dustin: Then you'll have to update your example code to highlight this, as I don't know where things be going awry. – Werner Sep 27 '14 at 15:29
I have \usepackage[pdfencoding = auto, psdextra, bookmarksdepth = 4]{hyperref} loaded would this be affecting it? – dustin Sep 27 '14 at 15:32
@dustin: Most likely, since hyperref deals with cross-referencing in LaTeX. When dealing with cross-referencing problems, always consider including that you're using hyperref. Always. I'll look into this further later. – Werner Sep 27 '14 at 19:09
@dustin: The loading order should be hyperref first then cleveref (see Which packages should be loaded after hyperref instead of before?). Also issue \phantomsection at the start of \setcreflabel. – Werner Sep 28 '14 at 03:32
The packages are loaded correctly. I will try the phantomsection in a bit. – dustin Sep 28 '14 at 03:33
\phantomsection didnt work. – dustin Sep 28 '14 at 15:04
@dustin: Then I don't know what to do. I added your hyperref setup before loading cleverref and I'm not getting ??. Please provide a minimal example that replicates your problem. – Werner Sep 28 '14 at 15:45

enumitem: using label for a defined item

1 Answers1