0. Context
DEB packages of mediawiki and many of its extensions, are prepared as part of the WP-MIRROR project.
See https://www.mediawiki.org/wiki/Wp-mirror.
1. Lintian
During the build process, lintian performs a great number of sanity checks, including seeing if each file has file permissions appropriate to its file type.
When lintian sees a non-executable file with 755 permissions, rather than 644, lintian will throw a warning like:
W: wp-mirror-mediawiki: executable-not-elf-or-script usr/share/wp-mirror-mediawiki/extensions/VisualEditor/ApiVisualEditorEdit.php
2. Files which should have permissions set to 644
VisualEditor/ApiVisualEditorEdit.php
VisualEditor/VisualEditor.hooks.php
VisualEditor/VisualEditor.php
3. Technical details
DEB standards version: 3.9.6
GIT branch: master