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BibTeX (TeX Live 2013 on ubuntu) doesn't escape the & specifically in urls. The % escapes but not &.

For example I have the following reference:

@article{benson1975, title = {The Interorganizational Network as a Political Economy}, volume = {20}, issn = {00018392}, url = {http://www.jstor.org/discover/10.2307/2391696?uid=3737664&uid=2134&uid=2129&uid=2&uid=70&uid=4&sid=21102581457607}, doi = {10.2307/2391696}, number = {2}, urldate = {2013-08-25}, journal = {Administrative Science Quarterly}, author = {Benson, J. Kenneth}, month = jun, year = {1975}, pages = {229} }

and when I cite it the bbl files keeps the & intact like this:

\htmladdnormallink{$<$http:\-/\-/www\-.jstor\-.org\-/discover\-/10\-.2307\-/2391696?uid=3737664&uid=2134&uid=2129&uid=2&uid=70&uid=4&sid=21102581457607$>$}{http://www.jstor.org/discover/10.2307/2391696?uid=3737664&uid=2134&uid=2129&uid=2&uid=70&uid=4&sid=21102581457607}.}

When I manual replace the & inside the \htmladdnormallink with \& LaTeX compiles perfectly so I'm sure that is there is a way to escape the & it would work like a charm.

Note that escaping the & on BibTeX (\&) doesn't work (works outside of urls, but not in urls). The bbl result is {\textbackslash} & instead of \&:

\htmladdnormallink{$<$http:\-/\-/www\-.jstor\-.org\-/discover\-/10\-.2307\-/2391696?uid=3737664{\textbackslash}&uid=2134{\textbackslash}&uid=2129{\textbackslash}&uid=2{\textbackslash}&uid=70{\textbackslash}&uid=4{\textbackslash}&sid=21102581457607$>$}{http://www.jstor.org/discover/10.2307/2391696?uid=3737664\&uid=2134\&uid=2129\&uid=2\&uid=70\&uid=4\&sid=21102581457607}.}

If it makes a difference, I'm using:

\documentclass[ article, 11pt, oneside, a4paper, english, brazil ]{abntex2} \usepackage{cmap} \usepackage{lmodern} \usepackage[T1]{fontenc} \usepackage[utf8]{inputenc} \usepackage{indentfirst} \usepackage{nomencl} \usepackage{color} \usepackage{graphicx} \usepackage[brazilian,hyperpageref]{backref} \usepackage[alf]{abntex2cite} \hypersetup{ pdftitle={\@title}, pdfauthor={\@author}, pdfcreator={\@author}, colorlinks=true, linkcolor=blue, citecolor=blue, filecolor=magenta, urlcolor=blue, bookmarksdepth=4 }
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  • I don't know abntex2 class, but maybe the problem is somehow related to it? Try to use a more standard document class for the MWE - maybe this will solve the issue. Commented Aug 26, 2013 at 7:48

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So after some fiddling around I found an option to in abntex2cite to change the url package from hyperref to url.

\usepackage[alf, abnt-url-package=url]{abntex2cite}

This fixes the problem with &, but creates the same problem with %. Fortunately it is possible to escape using \%. The same may happen with other special characters.

Anyways, when I checked the .bbl I noticed the & is not escaped there, even tough it compiles:

\url{http://www.jstor.org/discover/10.2307/2391696?uid=3737664&uid=2134&uid=2129&uid=2&uid=70&uid=4&sid=21102581457607}.}

Now I don't know if the bug is actually from hyperref, which should be able to escape & as the url package is or if it a abntex2 bug. Whichever that is, I inspected abntex2-alf.bst in the abntex2 package and was able to fix the problem by inserting the line below in the middle of filter.url.tex function:

duplicate$ "&" = {pop$ "\&" } 'skip$ if$

I will post this bug and fix on abntex2 bugtracker.

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