Hyperref + footnotebackref in longtable

Question

While I'm aware that hyperref doesn't suport footnotes and I quote:

hyperfootnotes boolean true
Makes the footnote marks into hyperlinks to the footnote text. Easily broken …

I'm wondering if anyone's found a workaround for something like:

\documentclass{article}

\usepackage[stable,perpage,multiple,bottom]{footmisc} 
\usepackage[hyperfootnotes=true]{hyperref}
\usepackage{footnotebackref} % connect note back to table
\usepackage{longtable}
\usepackage{blindtext} 

\begin{document}

\blindtext
\newpage
\blindtext

\begin{longtable}{c c p{3cm} c}
  & centered \footnote{Here's a note from a
    centered column} & \\
  &  & paragraph \footnote{This note is } & \\

\end{longtable}

\end{document}

Which gives

Here we can see that the note from a centered column works as expected (i.e. clicking on the footnote label brings the user to the footnote' they can then click on this label and be brought back to the table) while that from a paragraph-formatted column is rather recalcitrant (it brings the user back to the top of the document). I'm using footnotebackref to get back to the table, but this behavior is not essential...

(I'm using the \usepackage{}s as above after numerous attempts to solve this - this seems to be the closest I can come).

I'm asking as I have a table spanning multiple pages which would be better if a paragraph-formatted column could hyperlink to a footnote on the same page.

Or is this currently not possible?

Answer 1

Some extra work is needed so that the corresponding tag used by footnotebackref is still available when it gets recalled. The following seems to work:

\documentclass{article}

\usepackage{longtable}
\usepackage{array}

\usepackage{hyperref}
\usepackage{footnotebackref}
\usepackage{etoolbox}
\patchcmd{\footnote}{\edef}{\xdef}{}{\errmessage{failed to patch}}

\makeatletter
\renewcommand\@makefntext[1]{%
    \edef\@makefnmark{%
        \noexpand\mbox{\noexpand\textsuperscript{\noexpand\normalfont%
        \noexpand\hyperref[\BackrefFootnoteTag]{\noexpand\@thefnmark}}}\noexpand\,}%
    \BHFN@OldMakefntext{#1}}%
\makeatother


\begin{document}

\begin{longtable}{
    c
    >{\raggedright}p{3cm}
  }
  % start of table cells:
  centered \footnote{Here's a note from a
    centered column} \tabularnewline
  & paragraph \footnote{This note is from paragraph } \tabularnewline
\end{longtable}

\end{document}

Answer 2

@David Carlisle was bang on (as usual), it seems footnotebackref and longtable don't play well together. Here's a minimal example which produces the behavior I was originally hoping for.

\documentclass{article}

\usepackage{longtable}
\usepackage{array}

%\usepackage{footnotebackref}
\usepackage{hyperref}

\begin{document}

\begin{longtable}{
    c
    >{\raggedright}p{3cm}
  }
  % start of table cells:
  centered \footnote{Here's a note from a
    centered column} \tabularnewline
  & paragraph \footnote{This note is from paragraph } \tabularnewline
\end{longtable}

\end{document}

giving (sorry for quality)

Would be nice to have the footnote link back to the longtable so will keep this one open for now in case there's a way to do this.