[cups.development] [RFE] STR #1869: Automatic '-o raw' fornon-DSC-conforming PostScript?

[Helge Blischke]

John A. Murdie wrote:
> [STR New]
> 
> I find that the pstops filter emits PostScript which causes blank pages to
> be printed - one for each original page - if the input PostScript is
> non-Document Structure Convention conforming (see attached example file,
> whose first page is printed as blank simply because the application which
> generated the file omitted the '%%BeginProlog') - but I have other,
> larger,  examples which print tens or hundreds of blank pages. In some -
> but not all - such situations, the CUPS log file receives the message:
> 
> This document does not conform to the Adobe Document Structuring
> Conventions and may not print correctly!
> 
> The problem is fixed if one uses 'lp -o raw' or 'lpr -o raw'.
> 
> Of course, if users only kept and exchanged documents in a
> purpose-designed portable document format, and CUPS only ever had to deal
> with applications which produced only DSC-conforming PostScript, then this
> problem wouldn't arise.
> 
> We have to live in the real world, however. There are people here who have
> 20 years of documents in PostScript, much of it non-DSC-conforming. I've
> hammered on at them for years to distill these into PDF files, and asked
> them not to pass PostScript documents to, or receive them, from external
> colleagues, but to use PDF instead. They don't remember. Then again, there
> is much application software - some no longer maintained but still useful
> - which produces bad PostScript. I've not looked at Microsoft
> Windows-produced PostScript in a while, but at one time it violated the
> DSCs big-time - e.g. by outputing PostScript resources on the first page
> that used them, so that if one printed part of the document which used the
> resource but not the one on which the resource was introduced, then the
> print failed.
> 
> Unless something is done I'm going to be bothered by users of our new CUPS
> installation coming to me clutching piles of blank paper, demanding
> refunds for their printing costs and wasted time. Some of them will be
> angry.
> 
> The only work-around I can think of is to set '-o raw' as an
> across-the-board default option (how would I do that?), but would it be
> possible instead to make `-o raw' automatic for non-DSC-conforming
> PostScript?
> 
> Link: http://www.cups.org/str.php?L1869
> Version:  -feature

Try the attached file. If it prints OK, let me know.

Helge

-- 
Helge Blischke
Softwareentwicklung
SRZ Berlin | Firmengruppe besscom
http://www.srz.de

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