https://issues.apache.org/bugzilla/show_bug.cgi?id=54037
Priority: P2
Bug ID: 54037
Assignee: [email protected]
Summary: Issue a warning when accessibility is enabled and
language information is missing
Severity: normal
Classification: Unclassified
OS: All
Reporter: [email protected]
Hardware: All
Status: NEW
Version: all
Component: pdf
Product: Fop
To follow PDF/A compatibility, FOP stores the default value of "x-unknown" in
the Lang entry in the document catalog. That value is overridden if a language
is set on the fo:root element in the source document, but not in other cases.
If no language is defined on descendant elements, then a screen reader will
fall back to the entry in the document catalog and may read it out loud,
resulting into a disconcerting aural rendering for the user.
To reduce that risk it would be good to issue a warning whenever an element
(block of text or image with an alternate text) is missing language
information.
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