This file is indexed.

/usr/share/doc-base/sphinx-manual is in sphinx-doc 1.6.7-1ubuntu1.

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

The actual contents of the file can be viewed below.

 1
 2
 3
 4
 5
 6
 7
 8
 9
10
11
12
Document: sphinx-manual
Title: Sphinx documentation builder manual
Author: Georg Brandl
Abstract: Sphinx is a tool that translates a set of reStructuredText_ source
 files into various output formats, automatically producing cross-references,
 indices etc. It can also generate a LaTeX file that you can compile into a PDF
 version of the documents.
Section: Text

Format: HTML
Index: /usr/share/doc/sphinx-doc/html/index.html
Files: /usr/share/doc/sphinx-doc/html/*