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https://issues.apache.org/jira/browse/PDFBOX-4951?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=18083851#comment-18083851
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Volker Kunert edited comment on PDFBOX-4951 at 5/28/26 11:52 AM:
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No problem, the current version throws an exception if a glyph is missing.
See org.apache.pdfbox.examples.pdmodel.glyphlayout.DoGlyphLayoutMissingGlyphs
{{{}Exception in thread "main" java.lang.IllegalArgumentException: Missing
glyph in font 'Lohit Bengali' for the character 'A', codePoint: 65
(U+0041).{}}}{{{}at
org.apache.pdfbox.pdmodel.GlyphLayoutProcessor.checkMissingGlyphs(GlyphLayoutProcessor.java:91){}}}{{{}at
org.apache.pdfbox.pdmodel.GlyphLayoutProcessor.computeGlyphVector(GlyphLayoutProcessor.java:180){}}}{{{}at
org.apache.pdfbox.pdmodel.GlyphLayoutProcessor.showText(GlyphLayoutProcessor.java:210){}}}{{{}at
org.apache.pdfbox.pdmodel.PDAbstractContentStream.showText(PDAbstractContentStream.java:326){}}}{{{}at
org.apache.pdfbox.pdmodel.PDPageContentStream.showText(PDPageContentStream.java:37){}}}{{{}at
org.apache.pdfbox.examples.pdmodel.glyphlayout.DoGlyphLayoutMissingGlyphs.showLine(DoGlyphLayoutMissingGlyphs.java:99){}}}{{{}at
org.apache.pdfbox.examples.pdmodel.glyphlayout.DoGlyphLayoutMissingGlyphs.test(DoGlyphLayoutMissingGlyphs.java:69){}}}{{{}at
org.apache.pdfbox.examples.pdmodel.glyphlayout.DoGlyphLayoutMissingGlyphs.main(DoGlyphLayoutMissingGlyphs.java:39){}}}
{{{}Process finished with exit code 1{}}}{{{}{}}}
was (Author: [email protected]):
No problem, the current version throws an exception if a glyph is missing.
See org.apache.pdfbox.examples.pdmodel.glyphlayout.DoGlyphLayoutMissingGlyphs
Exception in thread "main" java.lang.IllegalArgumentException: Missing glyph in
font 'Lohit Bengali' for the character 3 in '123ABC': 'A', codePoint: 65 (0x41).
at
org.apache.pdfbox.pdmodel.GlyphLayoutProcessor.checkMissingGlyphs(GlyphLayoutProcessor.java:91)
at
org.apache.pdfbox.pdmodel.GlyphLayoutProcessor.computeGlyphVector(GlyphLayoutProcessor.java:180)
at
org.apache.pdfbox.pdmodel.GlyphLayoutProcessor.showText(GlyphLayoutProcessor.java:210)
at
org.apache.pdfbox.pdmodel.PDAbstractContentStream.showText(PDAbstractContentStream.java:326)
at
org.apache.pdfbox.pdmodel.PDPageContentStream.showText(PDPageContentStream.java:37)
at
org.apache.pdfbox.examples.pdmodel.glyphlayout.DoGlyphLayoutMissingGlyphs.showLine(DoGlyphLayoutMissingGlyphs.java:99)
at
org.apache.pdfbox.examples.pdmodel.glyphlayout.DoGlyphLayoutMissingGlyphs.test(DoGlyphLayoutMissingGlyphs.java:69)
at
org.apache.pdfbox.examples.pdmodel.glyphlayout.DoGlyphLayoutMissingGlyphs.main(DoGlyphLayoutMissingGlyphs.java:39)
Process finished with exit code 1
> Sequences of DIN SPEC 91379 with combining letters are rendered incorrectly
> ---------------------------------------------------------------------------
>
> Key: PDFBOX-4951
> URL: https://issues.apache.org/jira/browse/PDFBOX-4951
> Project: PDFBox
> Issue Type: Bug
> Components: Rendering
> Affects Versions: 2.0.21
> Reporter: Volker Kunert
> Priority: Major
> Attachments: DIN_SPEC_91379_Sequences-aa.pdf,
> DIN_SPEC_91379_Sequences-ab.pdf, DIN_SPEC_91379_Sequences-ac.pdf,
> DIN_SPEC_91379_Sequences.txt, DefaultScriptProcessor.java, DejaVuSans.ttf,
> DoGlyphLayoutBidi.pdf, DoGlyphLayoutDinSpec91379.pdf,
> DoGlyphLayoutDinSpec91379Form.pdf, DoGlyphPositionBengali.pdf,
> ExamplePdfboxFopPos-By-Tilman.pdf, ExamplePdfboxFopPos.java,
> ExamplePdfboxFopPos.pdf, ExamplePdfboxFopPosForm.java,
> ExamplePdfboxFopPosForm.pdf, FiraCode-Regular.ttf,
> FontForge-Lohit-Bengali.png, TestPdfbox.java, TestPdfboxFop2.java,
> TestPdfboxFop2.pdf, TestPdfboxJava2D.java, TestPdfboxJava2D.pdf, bidi-1.png,
> bidi-2.png, bidi.png, image-2026-05-23-16-16-53-442.png,
> image-2026-05-23-16-17-28-172.png, image-2026-05-26-16-49-45-529.png,
> ligatures-kerning.png, patch-2020-10-02.txt, pdfbox.patch, pdfbox.pdf,
> screenshot-1.png
>
>
> Accented Letters composed of Unicode base letter and combining accent are
> rendered wrong. E.g. with 0041 030B LATIN CAPITAL LETTER A WITH COMBINING
> DOUBLE ACUTE ACCENT the accent appears at the right hand side of the letter
> A, not above the letter A.
> The position is wrong for most of the sequences defined in the following spec:
> DIN SPEC 91379: Characters in Unicode for the electronic processing of names
> and data
> exchange in Europe; with digital attachment
> [https://www.xoev.de/downloads-2316#StringLatin]
> [https://www.din.de/de/wdc-beuth:din21:301228458]
>
> The correct rendering should look like the output of hb-view 2.6.8, see files
> DIN_SPEC_91379_Sequences*.pdf.
> The output of PDFBox is appended in pdfbox.pdf, which is created by running
> TestPdfbox.java. The sequences are read from file
> DIN_SPEC_91379_Sequences.txt.
>
> Font used for testing: NotoSansMono-Regular.ttf, see
> [https://www.google.com/get/noto/]
> download:
> [https://noto-website-2.storage.googleapis.com/pkgs/NotoSansMono-hinted.zip]
> See also FOP-2969
>
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