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https://issues.apache.org/jira/browse/FOP-3040?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=18063053#comment-18063053
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Joao Goncalves commented on FOP-3040:
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[~bmwiedemann] createDate, metadataDate and modifyDate are all fields that
adobe pro adds to a pdf when creating one. FOP is simply replicating the
behaviour. For the font naming, I would need steps to replicate it.
> provide deterministic PDF output
> --------------------------------
>
> Key: FOP-3040
> URL: https://issues.apache.org/jira/browse/FOP-3040
> Project: FOP
> Issue Type: Bug
> Reporter: Bernhard M. Wiedemann
> Priority: Major
>
> When you use the same input to create PDF output twice, results will vary
> from IDs, Time and something else.
> [https://github.com/apache/xmlgraphics-fop/pull/65] fixes the time portion,
> but more fixes are needed for fully deterministic bit-identical output.
> Especially the diff
> {{-/BaseFont /EAAAAC+DejaVuSansMono}}
> {{+/BaseFont /EAAAAC+DejaVuSansMono-Bold}}
> looks like a bug worth debugging outside of the context of reproducible
> builds.
> See [https://reproducible-builds.org/] for why this matters.
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