Re: hplip-printer-app hangs and oddities (Re: Cups automatic duplex printing problems)

Valentijn,

Does the PPD file in question have any JCL options (look for JCLOpenUI)?

It is possible that the JCL code is missing a trailing newline which =
could cause this - in which case we should append one to make sure the =
JCL code doesn't prevent language switching...


> On Jul 8, 2024, at 2:29=E2=80=AFPM, Valentijn Sessink =
<[email protected]> wrote:
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> Hi list,
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> I'm replying to a very old message of mine. I tried to fix =
ttps://github.com/OpenPrinting/hplip-printer-app/issues/17 because I =
like my postscript printers to actually print postscript. Yes, I'm that =
kind of nerd.
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> Anyway, I sort of fixed the bug but I don't know why. So it's probably =
rubbish that I made, I just don't grasp the code path here.
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> I switched the last two lines of ppdEmitJCL() and suddenly
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> On 02-02-2024 16:10, Valentijn Sessink wrote:
>> %%@PJL ENTER LANGUAGE =3D PostScript
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> ... the two %% are gone.
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> But this code has been there for ages. Has postscript with PJL been =
broken since 2014? I can't imagine that.
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> Would anyone please know why a normal Postscript printer with a PJL =
definition in its PPD file
> *JCLToPSInterpreter: "@PJL ENTER LANGUAGE =3D PostScript <0A>"
> ... would print %%@PJL ENTER LANGUAGE (with two extra %% signs)?
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> Sorry for the voodoo code (semi-randomly switching two lines of code). =
With printers, I just cannot seem to avoid it :-(
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> Best regards,
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> Valentijn
> --=20
> Durgerdamstraat 29, 1507 JL Zaandam; telefoon 075-7100071
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________________________
Michael Sweet