assert re.match(br'''\\documentclass{article}
(\\usepackage{[a-z]+}\n)+\\usepackage\[margin=20mm\]{geometry}
\\begin{document}
-This is glowfic
+\\newcommand{\\href}\[2\]{#2\\footnote{\\detokenize{#1}}}
+This is \\href{https://glowfic.com}{glowfic}
You \\emph{sure}\?