[Gimp-print-devel] 5.3.5 release blocker

[Solomon P. <pi...@sh...>]

The short version: It's being held up by release blocker bugs.

The current holdup is a nasty margin-related bug that manifests itself 
as garbled printouts when producing 2x6" strips, but only with certian 
dyesub models and even then, depending on how the printjob is submitted 
to CUPS (eg as a pdf vs jpeg) it doesn't occur.

Essentially, the image data is submitted in a portrait orientiation, but 
needs to be rotated as the printer needs landscape oriented data, but 
under some circumstances (where there is a non-zero non-printable margin 
on the LEFT side) this transformation isn't being performed properly, 
but the data is read out as if it has.

I was able to work around the problem insofar as the rotation now always 
occurs, but I noticed the first colunm (or four) of the output data is 
still being garbled.  There is clearly still a boundary off-by-one error 
going on, and I strongly suspect it has been here for a _long_ time, but 
is not normally visible as it falls outside of page margins.

While trying to hunt this one down, I've been cleaning up many of the 
spurious build warnings to hopefully expose stuff that matters, but 
managed to introduce outright crashes in the injket dithering code along 
the way.  Turns out there are some real bugs lurking there too, likely 
of the "cancel each other out" variety.

(Ah, the joy of technical debt in a 25-year-old codebase..)

 - Solomon
-- 
Solomon Peachy			      pizza at shaftnet dot org (email&xmpp)
                                      @pizza:shaftnet dot org   (matrix)
Dowling Park, FL                      speachy (libera.chat)