Blame SOURCES/ghostscript-pdf2dsc-regression.patch

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From db24f253409d5d085c2760c814c3e1d3fa2dac59 Mon Sep 17 00:00:00 2001
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From: Ray Johnston <ray.johnston@artifex.com>
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Date: Tue, 19 Mar 2019 09:25:48 -0700
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Subject: Fix lib/pdf2dsc.ps to use documented Ghostscript pdf procedures.
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We eliminated GS_PDF_ProcSet and pdfdict, but runpdfbegin, dopdfpages,
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and runpdfend are still available.
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diff --git a/lib/pdf2dsc.ps b/lib/pdf2dsc.ps
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index 4547849c2..d836bf320 100644
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--- a/lib/pdf2dsc.ps
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+++ b/lib/pdf2dsc.ps
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@@ -52,10 +52,7 @@ systemdict /.setsafe known { .setsafe } if
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 /DSCstring 255 string def
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 /MediaTypes 10 dict def
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-   GS_PDF_ProcSet begin
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-   pdfdict begin
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-   PDFfile
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-   pdfopen begin
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+   PDFfile runpdfbegin
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    /FirstPage where { pop } { /FirstPage 1 def } ifelse
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    /LastPage where { pop } { /LastPage pdfpagecount def } ifelse
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@@ -108,13 +105,12 @@ systemdict /.setsafe known { .setsafe } if
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    (%%BeginProlog\n) puts
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    (/Page null def\n/Page# 0 def\n/PDFSave null def\n) puts
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    (/DSCPageCount 0 def\n) puts
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-   (/DoPDFPage {dup /Page# exch store pdfgetpage pdfshowpage } def\n) puts
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-   (GS_PDF_ProcSet begin\npdfdict begin\n) puts
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+   (/DoPDFPage {dup /Page# exch store dup dopdfpages } def\n) puts
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    (%%EndProlog\n) puts
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    (%%BeginSetup\n) puts
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    DSCfile PDFname write==only
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    ( \(r\) file { DELAYSAFER { .setsafe } if } stopped pop\n) puts
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-   ( pdfopen begin\n) puts
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+   ( runpdfbegin\n) puts
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    ( process_trailer_attrs\n) puts
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    (%%EndSetup\n) puts
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@@ -239,13 +235,10 @@ systemdict /.setsafe known { .setsafe } if
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        DSCfile exch DSCstring cvs writestring
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        ( DoPDFPage\n) puts
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     } for
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-   currentdict pdfclose
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-   end
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-   end
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-   end
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+    runpdfend
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 % write trailer
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 (%%Trailer\n) puts
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-(currentdict pdfclose\nend\nend\nend\n) puts
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+(runpdfend\n) puts
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 (%%EOF\n) puts
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 % close output file and exit
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 DSCfile closefile