[cups] cups-2.0.3 && problem/error in resulting PostScript code

[Johannes Meixner]

Hello,

On Jan 15 12:08 Matthias Apitz wrote (excerpt):
> ... I configured a Generic PostScript
> printer and when I send the test page produced by cups, it contains at
> the start after the PortScript Comments section, some code which the
> printer can not understand, it just prints out some error messages as:
>
> ERROR:
> invalidaccess
> OFFENDING COMMAND:
> ]
> STACK:
> ....
>
> I captured the PostScript file which the socket backend sends to port
> 9100 with netcat and have it here: http://www.unixarea.de/9100.ps

That 9100.ps contains in particular the string
  "Error handled by opdfread.ps"
but I cannot find 'opdfread' in the CUPS 2.0.3 sources
so that I assume it is not CUPS that produced
that problematic PostScript.

Regarding how to find out what that problematic PostScript
produced you may have a look at
https://bugzilla.opensuse.org/show_bug.cgi?id=961864#c10
therein see in particular
"For details what programs are run when processing"


> If I bring the file with ghostscript to a X11 display,
> it looks fine.

The Ghostscript upstream authors spend a lot of time to
implement zillions of workarounds and fail-safe operation
for broken PostScript and nowadays mainly broken PDF
input for Ghostscript.


Kind Regards
Johannes Meixner
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