Improve a bit the support of ppt files

10 jobs for master in 3 minutes and 53 seconds (queued for 1 second)
Status Job ID Name Coverage
  Linting
passed #133171
linting:bandit

00:00:19

passed #133172
linting:codespell

00:00:18

passed #133175
linting:mypy

00:00:19

passed #133174
linting:pyflakes

00:00:17

passed #133173
linting:pylint

00:00:28

 
  Test
passed #133176
tests:archlinux

00:02:17

passed #133177
tests:debian

00:01:12

passed #133178
tests:debian_with_bubblewrap

00:02:10

100.0%
passed #133179
tests:fedora

00:01:15

passed #133180
tests:gentoo

00:03:23