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PDF export: PDF and .ai files keep the document's creation date

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The engine built the PDF options without a creation date, so the
writer dated every PDF and PDF-compatible .ai file with the time it
was written. A document created on 2020-01-01 (File › File Info
shows the date) exported as a PDF with today's date in /CreationDate
and xmp:CreateDate. SVG export with the metadata option already
writes the document's own date.

The options now carry the document's File Info created date and the
time of writing as the modification date. A document without a
creation date is dated with the time of writing, as before, so PDF/X
files still get their required date. The PDF writer writes one date
for both, so the export then sets /ModDate, xmp:ModifyDate and the
PDF/A history dates to the time of writing; /CreationDate and
xmp:CreateDate keep the document's date. The page information mark
and the embedded editing data's modification date keep the time of
writing.

Docs: docs/mcp.md (File Info), docs/target-app-parity.md.
This commit is contained in:
dotCooCoo
2026-10-18 12:36:27 +07:00
committed by bflatastic
parent 24d4777d1a
commit aa9cf83fd2
10 changed files with 206 additions and 8 deletions
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@@ -2599,7 +2599,9 @@ ISO 8601 UTC. Pass any of the editable keys to change them in one undo step (`nu
list or a comma-separated string and keeps each word once); bad values are refused. PDF export writes the title,
author, description and keywords to the document info and XMP, PNG export writes them (with the copyright and
creation date) as text chunks, and SVG export writes the description as `<desc>` and, with the `metadata` option,
all of it as Dublin Core. A PDF, `.ai` or `.ait` opened from its pages or its editing copy (`document.open`,
all of it as Dublin Core. PDF export and PDF-compatible `.ai` and `.ait` saves write the `created` date (the time of
writing when the document has none) as the file's creation date and the time of writing as its modification date.
A PDF, `.ai` or `.ait` opened from its pages or its editing copy (`document.open`,
`file.newFromTemplate`, `file.revert`; not one restored from the document it carries) opens with the `author`,
`description`, `keywords`, `copyrightStatus`, `copyrightNotice`, `copyrightUrl`, `created` and `modified` that its XMP
packet (`dc:creator`, `dc:description`, `dc:subject` or `pdf:Keywords`, `xmpRights:Marked`, `dc:rights`,