# How to change the font for biblatex acronyms

I have a bibliography in biblatex and I want to use different fonts than Computer Modern, namely Lato & Bitstream Charter. Here is a minimal example:

\documentclass{article}

\usepackage[T1]{fontenc}
\usepackage[defaultsans, scale=0.9]{lato}
\usepackage[bitstream-charter]{mathdesign}
\usepackage{filecontents}

\begin{filecontents*}{references.bib}
@article{
shannon,
author = {Shannon, C. E.},
title = {A mathematical theory of communication},
journal = {SIGMOBILE Mob. Comput. Commun. Rev.},
issue_date = {January 2001},
volume = {5},
number = {1},
month = jan,
year = {2001},
issn = {1559-1662},
pages = {3--55},
numpages = {53},
url = {http://doi.acm.org/10.1145/584091.584093},
doi = {10.1145/584091.584093},
acmid = {584093},
publisher = {ACM},
address = {New York, NY, USA},
}
\end{filecontents*}

\usepackage[backend=biber,style=alphabetic,natbib=true]{biblatex}

\begin{document}

\nocite{*}
\printbibliography

\end{document}


This results in the following output after running biber and pdflatex:

The red arrows indicate my problem: Because Bitstream Charter has no actual small caps, LaTeX simply shrinks the characters for acronyms like ISSN and I don't like how this looks. So my question is: How can I change the font such that acronyms are simply displayed regularly?

-

You need to change the macro \mkbibacro. Its original definition is

\newcommand*{\mkbibacro}[1]{%
\ifcsundef{\f@encoding/\f@family/\f@series/sc}
{#1}
{\textsc{\MakeLowercase{#1}}}}


so a somewhat brute-force approach (replacing small caps with "typeset as-is" (here: capitals) for all fonts) would be

\renewcommand*{\mkbibacro}[1]{#1}


A better way is to trick biblatex into thinking that Mathdesign/Bitstream Charter doesn't feature small caps. Add the following to your preamble:

\makeatletter
\renewcommand*{\mkbibacro}[1]{%
\csundef{\f@encoding/mdbch/\f@series/sc}%
\ifcsundef{\f@encoding/\f@family/\f@series/sc}
{#1}
{\textsc{\MakeLowercase{#1}}}}
\makeatother


Note: The "font shorthand" mdbch for Mathdesign/Bitstream Charter can be detected by adding \show\rmdefault to the OP's example.

-
Works great, thank you! –  padde Jun 5 '12 at 12:28