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Export to Word: files open in Word again (#72)

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Text extracted from a PDF can hold C0 control characters (fonts without
a usable /ToUnicode), which XML forbids, and Word refuses the whole
document over one ("Word experienced an error trying to open the
file"). The Word, HTML and RTF writers now drop the characters XML
forbids. Also:
- the page size stays within Word's 22 in (a till receipt is taller,
  and Word read it as a negative height), and margins shrink on small
  pages so text keeps room; images fit the real text width;
- a non-finite font size falls back to 12 pt;
- zip entries get a valid DOS date (1980-01-01) instead of zero.

Checked by opening the exports in Microsoft Word: control characters,
U+FFFE/U+FFFF, a 33 in receipt with a 40-row table, narrow, tiny and
wide pages all open.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
This commit is contained in:
bflatastic
2026-10-07 01:31:37 +07:00
co-authored by Claude Opus 5.5
parent 2e49a84ace
commit 8b25d88450
3 changed files with 79 additions and 14 deletions
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parity/acrobat-features.toml
+3 -3
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@@ -6850,8 +6850,8 @@ milestone = "M10"
status = "partial"
commands = ["export.docx"]
tools = ["doc_export_office"]
evidence = ["crates/export/src/lib.rs::docx_is_a_word_package", "crates/export/src/lib.rs::grid_text_becomes_a_real_table_in_every_format", "crates/engine/src/tests.rs::exporting_office_files_keeps_images", "crates/automation/tests/automation.rs::exporting_to_word_html_and_rtf", "crates/ui-egui/tests/compare.rs::export_to_word_html_and_rtf"]
notes = "Flowing Word document: paragraphs, Heading 1/2 from larger text, bold/italic, images inline, page breaks, and detected tables with spans/empty cells; checked with macOS textutil. Not yet: columns, fonts and colours, exact layout mode."
evidence = ["crates/export/src/lib.rs::docx_is_a_word_package", "crates/export/src/lib.rs::grid_text_becomes_a_real_table_in_every_format", "crates/export/src/lib.rs::word_opens_text_with_control_characters_and_long_pages", "crates/engine/src/tests.rs::exporting_office_files_keeps_images", "crates/automation/tests/automation.rs::exporting_to_word_html_and_rtf", "crates/ui-egui/tests/compare.rs::export_to_word_html_and_rtf"]
notes = "Flowing Word document: paragraphs, Heading 1/2 from larger text, bold/italic, images inline, page breaks, and detected tables with spans/empty cells; checked with macOS textutil and opened in Microsoft Word (Windows). Characters XML forbids are dropped; the page size stays within Word's 22 in. Not yet: columns, fonts and colours, exact layout mode."
[[feature]]
id = "create.export-rtf"
@@ -6862,7 +6862,7 @@ milestone = "M10"
status = "shipped"
commands = ["export.rtf"]
tools = ["doc_export_office"]
evidence = ["crates/export/src/lib.rs::rtf_escapes_and_sizes", "crates/automation/tests/automation.rs::exporting_to_word_html_and_rtf", "crates/ui-egui/tests/compare.rs::export_to_word_html_and_rtf"]
evidence = ["crates/export/src/lib.rs::rtf_escapes_and_sizes", "crates/export/src/lib.rs::word_opens_text_with_control_characters_and_long_pages", "crates/automation/tests/automation.rs::exporting_to_word_html_and_rtf", "crates/ui-egui/tests/compare.rs::export_to_word_html_and_rtf"]
notes = "Paragraphs with sizes, bold, italic, Unicode; page breaks. Images are left out."
[[feature]]