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Merge PR #1946: XLSX: keep cell fonts' charset (Arabic 178) and family on save

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crates/xlsx/src/styles.rs: family/charset block ported into the dxf.is_none() branch of font_xml (PR #1225 made it take Option<&DxfStated>)
docs/file-format-parity.md: header Change line keeps both sides' clauses
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aiongg
2026-10-22 02:36:23 +00:00
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commit d97f61748e
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docs/file-format-parity.md
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# File-format parity
> **Last reviewed:** 2026-10-11 · **Last updated:** 2026-10-19 · **Change:** minor (XLSX PivotTables with two value fields keep their layout in Excel and PivotCharts stay bound to their PivotTable (#1447); .xls dialog sheets are skipped instead of read as worksheets; `.xls` import reads each sheet's display options from WINDOW2: right-to-left, gridlines, headings, zeros, formulas; XLSX text boxes and shapes keep their paragraphs' right-to-left direction on save; CSV/TSV/TXT can open with every field kept as text via `file.open {csvAsText}`; formulas over Excel's 8,192 characters, and `%` or call chains past the nesting limit, are parse errors instead of stack overflows when a file is opened; XLSX PivotTables read and write `rowGrandTotals`/`colGrandTotals` the way Excel does, so a table saved with only one grand total opens with the right one; HTML export keeps right-to-left) · **Target:** Microsoft Excel (Microsoft 365), Excel for Mac 16.113.4
> **Last reviewed:** 2026-10-11 · **Last updated:** 2026-10-19 · **Change:** minor (XLSX PivotTables with two value fields keep their layout in Excel and PivotCharts stay bound to their PivotTable (#1447); .xls dialog sheets are skipped instead of read as worksheets; `.xls` import reads each sheet's display options from WINDOW2: right-to-left, gridlines, headings, zeros, formulas; XLSX text boxes and shapes keep their paragraphs' right-to-left direction on save; CSV/TSV/TXT can open with every field kept as text via `file.open {csvAsText}`; formulas over Excel's 8,192 characters, and `%` or call chains past the nesting limit, are parse errors instead of stack overflows when a file is opened; XLSX PivotTables read and write `rowGrandTotals`/`colGrandTotals` the way Excel does, so a table saved with only one grand total opens with the right one; HTML export keeps right-to-left; XLSX font charset and family values are preserved on save) · **Target:** Microsoft Excel (Microsoft 365), Excel for Mac 16.113.4
Every format Excel opens or saves, with GridCraft's read and write support, fidelity and tests.
Part of [target-app-parity.md](target-app-parity.md). **File formats: ~50% ready, 80–120 h**
@@ -85,6 +85,7 @@ refresh. Counted under features (Get & Transform, ~10% ready), not here.
| Date | Change | Summary |
|---|---|---|
| 2026-10-19 | minor | XLSX font charset and family values are preserved on save, retaining the character set and family used for substitute font selection |
| 2026-10-19 | minor | .xls import skips dialog sheets (WsBool `fDialog`), which share the worksheet BOF type and were read as empty worksheets |
| 2026-10-19 | minor | `.xls` import reads WINDOW2: right-to-left sheets (common in older Arabic and Hebrew files) open right-to-left, and hidden gridlines, headings and zero values and Show Formulas carry over |
| 2026-10-19 | trivial | XLSX text boxes and shapes keep right-to-left paragraph direction (`a:pPr rtl`, ECMA-376 Part 1 §21.1.2.2.7): read from the first paragraph and written on every paragraph; output without it is unchanged |
docs/localization-parity.md
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# Localization parity
> **Last reviewed:** 2026-10-10 · **Last updated:** 2026-10-19 · **Change:** minor (defined-name length limit counts characters, so long Arabic names are accepted; Table names are limited to 255 characters; right-to-left sheets in `.xls` files open right-to-left; text boxes and shapes keep right-to-left paragraph direction through XLSX save; Save as Web Page and copied HTML keep right-to-left; French and Serbian `context|label` translations no longer show the context) · **Target:** Microsoft Excel (Microsoft 365), Excel for Mac 16.113.4
> **Last reviewed:** 2026-10-10 · **Last updated:** 2026-10-19 · **Change:** minor (defined-name length limit counts characters, so long Arabic names are accepted; Table names are limited to 255 characters; right-to-left sheets in `.xls` files open right-to-left; text boxes and shapes keep right-to-left paragraph direction through XLSX save; Save as Web Page and copied HTML keep right-to-left; French and Serbian `context|label` translations no longer show the context; Arabic XLSX font fallback metadata is preserved on save) · **Target:** Microsoft Excel (Microsoft 365), Excel for Mac 16.113.4
Per-language status against Excel, which ships its UI in dozens of languages (Windows language
packs cover 100+), with localized function names, argument separators, number and date formats,
@@ -83,6 +83,7 @@ language (none so far) and of localized function names.
| Date | Change | Summary |
|---|---|---|
| 2026-10-19 | minor | XLSX fonts retain charset and family metadata so systems can select a substitute font with the intended script when the named font is unavailable |
| 2026-10-19 | minor | Defined-name length counts characters, not bytes: Arabic names up to 255 letters are accepted, and Create from Selection keeps long Arabic headers |
| 2026-10-19 | minor | Table names are limited to 255 Unicode characters |
| 2026-10-19 | minor | Right-to-left sheets in legacy `.xls` files (common in older Arabic workbooks) open right-to-left |