\NeedsTeXFormat{LaTeX2e}[2.09]
\ProvidesPackage{angle}
%
% "angle" package:
% Make < and > produce angle brackets in both normal and math mode.
% The original definitions of < and > are captured in \angle@lt and
% angle@gt.
%
% The macros \lt and \gt may be used to obtain the original less-than
% and greater-than symbols in both math mode and normal mode.
% 
% -- Andrew Myers (andru@cs.cornell.edu)
%
\let\angle@lt=<%
\let\angle@gt=>%

\catcode`\<=\active%
\catcode`\>=\active%
\def<{\ifmmode\langle\else$<$\fi}%
\def>{\ifmmode\rangle\else$>$\fi}%
\def\lt{\ifmmode\angle@lt\else$\lt$\fi}
\def\gt{\ifmmode\angle@gt\else$\gt$\fi}

\gdef\angle@activate{%
\catcode`\<=\active%
\catcode`\>=\active%
}

\gdef\angle@deactivate{%
\catcode`\<=12
\catcode`\>=12
}

\catcode`\<=12
\catcode`\>=12

\AtBeginDocument{\angle@activate}