This file is indexed.

/usr/share/hevea/hanging.hva is in hevea 2.23-2build1.

This file is owned by root:root, with mode 0o644.

The actual contents of the file can be viewed below.

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\ProvidesPackage{hanging}
%%Basically does nothing but eating arguments
\newcommand{\hangpara}[2]{}
\newcounter{@hang}
\newcommand{\@hang@style}[2]
{\newstyle{div.hangparas#1 P}{text-indent:-#2;padding-left:#2;}}
\newenvironment{hangparas}[2]
{\stepcounter{@hang}%
\@auxdowrite{\string\@hang@style\{\arabic{@hang}\}\{\css@length{#1}\}
}%
\@open{div}{class="hangparas\arabic{@hang}"}}{\@close{div}}
\newenvironment{hangpunct}{}{}
\newcommand{\nhpt}{.}
\let\nhlq\@hevea@backquote
\let\nhrq\@hevea@quote