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I'm looking for a way to add todo notes in addition to the two questionmarks wherever a \ref is undefined/missing.

Currently I'm writing a \todo manually for any \ref that I intend to fulfill later. Figures for example where I don't have the actual image yet. I would like to see this done automatically.

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1 Answer 1

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Patch the \@setref macro.

\documentclass{article}
\usepackage{todonotes}
\usepackage{etoolbox}
\makeatletter
    \patchcmd{\@setref}{\ifx#1\relax}{\ifx#1\relax \todo{MISSING REFERENCE}}{}{}
\makeatother
\begin{document}
This is a missing reference: \ref{somefig}.
\end{document}

May not work with every package that does something with the ref mechanism.

Update:

For \autoref in the hyperref package, add (also between \makeatletter and \makeatother):

\ifdefined\HyRef@autosetref \patchcmd{\HyRef@autosetref}
      {\else}{\else\todo{MISSING REFERENCE}}{}{}\fi
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  • Thanks... umh, you don't know by chance how to do this with \autoref from the hyperref package, do you?
    – Hendrik Wiese
    Nov 23, 2016 at 12:18
  • See the updated answer.
    – Pieter van Oostrum
    Nov 23, 2016 at 15:28
  • Please Note: As these solutions hack into the internals, they may someday break if the internals are significantly changed.
    – Pieter van Oostrum
    Nov 23, 2016 at 15:33
  • I'll keep that in mind, thanks. However since this is a one time solution for my master thesis I suppose (i.e. hope) it will break long after I have handed it in.
    – Hendrik Wiese
    Nov 23, 2016 at 15:49

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