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I am using cleverref and a custom counter to typeset a special kind of reference, where I need the same text on the definition side and the reference side.

Currently I use \textbf{F\arabic{thefeatures}} on the definition side and \crefformat{thefeatures}{#2\textbf{F#1}#3} to format the references.

However instead of the F<number> I'd like to switch to F<number padded by zeroes>.

While I can use the fmtcount package for the definition side (and use the \padzeroes command with decimal output), this doesnt work for the reference labels.

Current code:

\documentclass{article}
\usepackage{cleveref}

\newcounter{thefeatures}
\setcounter{thefeatures}{0}

\crefname{thefeatures}{feature}{features}

\newcommand{\deffeat}[1]{
    \refstepcounter{thefeatures}
    \label{#1}
    \textbf{F\arabic{thefeatures}}
}

\crefformat{thefeatures}{#2\textbf{F#1}#3}


\begin{document}

\deffeat{test} feature test


\deffeat{test2} feature test2


\Cref{test} test ref

\end{document}
share|improve this question
Please add a minimal working example (MWE) that illustrates your problem. It is considered a lot better to put in some code that will compile, as it makes it a lot easier for us to copy it into our text editor and work with it, and see exactly what it is you are trying to do. – Werner Nov 1 '12 at 18:38

2 Answers

up vote 4 down vote

Manual approach:

\textbf{%
  F%
  \ifnum\value{thefeatures}<1000 0\fi
  \ifnum\value{thefeatures}<100 0\fi
  \ifnum\value{thefeatures}<10 0\fi
  \arabic{thefeatures}%
}%

A possible implementation that works for you is

\documentclass{article}
\usepackage{cleveref}

\newcounter{thefeatures}
\setcounter{thefeatures}{0}

\crefname{thefeatures}{feature}{features}

\newcommand{\deffeat}[1]{%
  \refstepcounter{thefeatures}%
  \label{#1}%
  \printfeat{\arabic{thefeatures}}%
}

\crefformat{thefeatures}{#2\protect\printfeat{#1}#3}

\newcommand{\printfeat}[1]{%
  \textbf{%
    F%
    \ifnum\value{thefeatures}<1000 0\fi
    \ifnum\value{thefeatures}<100 0\fi
    \ifnum\value{thefeatures}<10 0\fi
    #1%
  }%
}

\begin{document}

\deffeat{test} feature test


\deffeat{test2} feature test2


\Cref{test} test ref

\end{document}

Watch out for spurious spaces in your definitions.

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and how would i use that within crefformat ? where the counter value is somewhat different the only place where this would work, is where the fmtcount package would aready work – Ronny Nov 1 '12 at 16:36
it seems you completely missed that the counter value is always the last one, no the one of the referenced item – Ronny Nov 1 '12 at 21:21
@Ronny: Did you compile at least twice? This should not be the case. – Werner Nov 2 '12 at 3:29
the script i test with is compiled 4 times (due to bibtex) – Ronny Nov 2 '12 at 9:01
to be clar, i added a printing for the value of the counter using \arabic{thefeatures} in the format (so it fits his code) - and as expected the counter was on the last value, since it doesnt get a new value in the format so the noly way to get the counter in the crefformat seems to be the one that comes in as string – Ronny Nov 2 '12 at 9:03
up vote 0 down vote accepted

i solved the problem using the xstrings package and thanks to controling padding using the xstring package

the code for the pad command i use is 

\newcommand\padfrom[1]{%
\StrLen{#1}[\templen]%
\StrGobbleRight{000}{\templen}%
#1}
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