[PDFBOX-5730] The expected SubstFormat for ExtensionSubstFormat1 subtable is 108 but should be 1

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 3.0.1 PDFBox
• Fix Version/s: 3.0.2 PDFBox, 4.0.0
• Component/s: FontBox
• Labels: gsub
• Assignee: Tilman Hausherr
• Reporter: Tilman Hausherr
• Created: 07/Dec/23 12:55
• Updated: 14/Mar/24 20:57
• Resolved: 22/Dec/23 13:32

Description

The error message came with Nirmala.ttf font from windows while working on PDFBOX-5729. The cause is a missing seek while going through a type 7 lookup table and after having read a subtable.

Issue Links

• relates to: PDFBOX-5592 Support GSUB LookupType 7 (Extension Substitution Subtable Format 1)