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\ProvidesPackage{maybemath}[2005/2/22]
\RequirePackage{amsmath}
\RequirePackage{bm}
%\RequirePackage{xspace}
%% A few commands for making math fonts bold, upright, italic
%% or sans-serif according to the context of surrounding text.
%% It is particularly useful for avoiding problems with math
%% boldness in section titles causing unwanted boldness
%% in e.g. the table of contents.
%%
%% Thanks to Viet-Trung Luu on comp.text.tex for providing
%% the first steps to solving this problem.
%%
%% This material is subject to the LaTeX Project Public License.
%% See http://www.ctan.org/tex-archive/help/Catalogue/licenses.lppl.html
%% for the details of that license.
%%
%% Author: Andy Buckley <andy@insectnation.org>
%% Mode names for bold, ext-bold, italic and sans-serif contexts
\def\@boldname{b}%
\def\@boldexname{bx}%
\def\@italname{it}%
\def\@sfname{cmss}%
%% Use the bold symbol if reqd for math fonts
\DeclareRobustCommand{\maybebm}[1]{\ensuremath{%
\ifx\f@series\@boldname%
{{\bm{#1}}}%
\else\ifx\f@series\@boldexname%
{{\bm{#1}}}%
\else%
{{#1}}%
\fi\fi%
}}
%% Use \mathrm if not in italic context
\DeclareRobustCommand{\mayberm}[1]{\ensuremath{%
\ifx\f@shape\@italname%
{#1}%
\else%
{\mathrm{#1}}%
\fi%
}}
%% Use \mathit if in italic context
\DeclareRobustCommand{\maybeit}[1]{\ensuremath{%
\ifx\f@shape\@italname%
{\mathit{#1}}%
\else%
{#1}%
\fi%
}}
%% Use \mathrm if not in italic context
%% and \mathit if in italic context
\DeclareRobustCommand{\maybeitrm}[1]{\ensuremath{%
\ifx\f@shape\@italname%
{\mathit{#1}}%
\else%
{\mathrm{#1}}%
\fi%
}}
%% Maybe-italic subscript shifting
\DeclareRobustCommand{\maybeitsubscript}[1]{\ensuremath{%
\ifx\f@shape\@italname%
{\!\mspace{1mu}#1}%
\else%
{#1}%
\fi%
}}
%% Maybe-sans font change
\DeclareRobustCommand{\maybesf}[1]{\ensuremath{%
\ifx\f@family\@sfname%
{\mathsf{#1}}%
\else%
{#1}%
\fi%
}}
%% Convenience command for following bold and sans-serif contexts
\DeclareRobustCommand{\maybebmsf}[1]{%
{\maybebm{\maybesf{#1}}}%
}
%% For reference purposes :-)
%\DeclareRobustCommand{\maybemath}{\texttt{maybemath}\xspace}
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