Fix non-breaking space (U+00A0) handling in text justification#1473
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andreasrosdal merged 3 commits intomasterfrom Feb 16, 2026
Merged
Fix non-breaking space (U+00A0) handling in text justification#1473andreasrosdal merged 3 commits intomasterfrom
andreasrosdal merged 3 commits intomasterfrom
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Co-authored-by: andreasrosdal <259156774+andreasrosdal@users.noreply.github.com>
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Co-authored-by: andreasrosdal <259156774+andreasrosdal@users.noreply.github.com>
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Fix non-breaking space (U+00A0) not being stretched during text justification when using ColumnText.setSpaceCharRatio
Fix non-breaking space (U+00A0) handling in text justification
Feb 16, 2026
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Description of the new Feature/Bugfix
Non-breaking spaces (U+00A0) were treated as regular characters during justification, remaining fixed width while only regular spaces (U+0020) stretched with
setSpaceCharRatio > 1. This broke Polish typesetting conventions where single-letter words must use non-breaking spaces.Changes:
PdfLine.numberOfSpaces(): Count both U+0020 and U+00A0PdfDocument.indexOfSpace(): New helper to locate both space typesPdfDocument.writeLineToContent(): UseindexOfSpace()for CJK/special encoding chunksBoth space types now stretch uniformly during justification.
Unit-Tests for the new Feature/Bugfix
Three test cases covering: non-breaking spaces only, mixed spaces, and high ratio scenarios.
Compatibilities Issues
None. Changes are additive to space character detection logic.
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Testing details
Run
NonBreakingSpaceJustificationTest- generates PDFs intarget/showing proper stretching of non-breaking spaces under justification.💡 You can make Copilot smarter by setting up custom instructions, customizing its development environment and configuring Model Context Protocol (MCP) servers. Learn more Copilot coding agent tips in the docs.