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Drop support for Ghostscript <9.50

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This commit is contained in:
James R. Barlow
2022-08-02 15:01:10 -07:00
parent d5a9861d5c
commit 67773da309
7 changed files with 12 additions and 75 deletions
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docs/installation.rst
+2 -2
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@@ -616,8 +616,8 @@ manager. ``pip`` cannot provide them.
The following versions are required:
- Python 3.7 or newer
- Ghostscript 9.23 or newer
- Python 3.8 or newer
- Ghostscript 9.50 or newer
- Tesseract 4.0.0 or newer
- jbig2enc 0.29 or newer
- pngquant 2.5 or newer
docs/introduction.rst
+1 -2
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@@ -190,8 +190,7 @@ Ghostscript also imposes some limitations:
behavior can be suppressed by setting ``--pdfa-image-compression`` to
``jpeg`` or ``lossless`` to set all images to one type or the other.
Ghostscript has no option to maintain the input image's format.
(Ghostscript 9.25+ can copy JPEG images without transcoding them;
earlier versions will transcode.)
(Modern Ghostscript can copy JPEG images without transcoding them.)
- Ghostscript's PDF/A conversion removes any XMP metadata that is not
one of the standard XMP metadata namespaces for PDFs. In particular,
PRISM Metdata is removed.