[macros] Add 'footnote' environment.

Author: jensmaurer

source/macros.tex

@@ -289,6 +289,22 @@
 \newnoteenvironment{note}{Note \arabic{note}}{end note}
 \newnoteenvironment{example}{Example \arabic{example}}{end example}
 
+\makeatletter
+\let\footnote\@undefined
+\global\newsavebox{\@tempfootboxa}   % must be global, to escape tables/figures
+\newsavebox{\@templfootbox}
+\newenvironment{footnote}{%
+  \unskip\footnotemark%    no space before the mark
+  \normalfont%
+  \footnotesize%           text size for rendering the footnote text
+  \begin{lrbox}{\@templfootbox}%       temporarily save to local box
+}{%
+  \end{lrbox}%
+  \global\setbox\@tempfootboxa\hbox{\unhbox\@templfootbox}%  copy to global box
+  \footnotetext{\unhbox\@tempfootboxa}%
+}
+\makeatother
+
 %% Library function descriptions
 \newcommand{\Fundescx}[1]{\textit{#1}}
 \newcommand{\Fundesc}[1]{\Fundescx{#1}:\space}