ODS export does not write font strikethrough (but works for XLSX)

[xxltomcat-ux]

Bug Description

Font strikethrough, set with $cell->getStyle()->getFont()->setStrikethrough(true);, is correctly exported for XLSX but does not appear in ODS export. Example:

$cell = $this->PhpSpreadsheet->getActiveSheet()->getCellByColumnAndRow($curFldCnt, $curRowCnt);
$cell->getStyle()->getFont()->setStrikethrough(true);

ODS output does not show strikethrough in LibreOffice or OpenOffice.

Technical Analysis

• src/PhpSpreadsheet/Writer/Ods/Cell/Style.php method writeTextProperties does not write the style:text-line-through-style or style:text-line-through-type properties required for ODS strikethrough.
• XLSX export includes strikethrough correctly.

Proposed Fix

Add code like this to writeTextProperties:

if ($font->getStrikethrough()) {
    $this->writer->writeAttribute('style:text-line-through-style', 'solid');
    $this->writer->writeAttribute('style:text-line-through-type', 'single');
}

Steps to Reproduce

1. Set font strikethrough on a cell.
2. Export as ODS.
3. Open the file in LibreOffice/OpenOffice.
4. Strikethrough does not appear.

Expected Behavior

Strikethrough should be exported and appear in ODS documents.

Environment

• PhpSpreadsheet version: 2.x
• PHP version: 8.2.30
• LibreOffice/OpenOffice version: 26.2.0

Additional Context

This affects all ODS exports with strikethrough. See code in Writer/Ods/Cell/Style.php.

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Related issue if found: N/A

Suggested Labels

• bug
• writer/ods
• strikethrough (if available)

Pull Request #4812

[oleibman]

I am actually working on a PR to improve Ods font support. I should have a PR some time this weekend.