This bug was fixed in the package ristretto - 0.8.4-0ubuntu1
--------------- ristretto (0.8.4-0ubuntu1) disco; urgency=medium
* New upstream bugfix release - Fix displaying PGM files (LP: #1771227) * d/patches/lp1756191.patch: - Dropped, included upstream.
-- Sean Davis <email address hidden> Mon, 08 Apr 2019 21:36:30 -0400
This bug was fixed in the package ristretto - 0.8.4-0ubuntu1
---------------
ristretto (0.8.4-0ubuntu1) disco; urgency=medium
* New upstream bugfix release lp1756191. patch:
- Fix displaying PGM files (LP: #1771227)
* d/patches/
- Dropped, included upstream.
-- Sean Davis <email address hidden> Mon, 08 Apr 2019 21:36:30 -0400