math nested inside Formula

[davidcarlisle]

verapdf's UA-2 validation currently checks that math is directly contained in Formula

<rule specification="ISO 14289-2:2024" clause="8.2.5.29" testNumber="1" status="failed" failedChecks="1" tags="structure">
            <description>The math structure type shall occur only as a child of a Formula structure element</description>

However it is intended that this clause is to be interpreted more loosely and allow math elements that are nested within an ancestor Formula not to require a nested Formula.This is explicit in the math in PDF best practice guide currently in private draft at pdf association.

LaTeX generates tagged pdf assuming this interpretation and we just had a public comment that files are failing validation

latex3/tagging-project#1168

The LaTeX that is in the issue generates the attached PF which currently (verapdf 1.28.2) gives the verapdf warning shown above

nm1.pdf

would it be possible to allow any math with ancestor Formula in the UA-2 profile?

[bdoubrov]

@davidcarlisle thanks a lot for reporting this! I do agree this needs to be fixed

[MaximPlusov]

Fixed in the latest dev build.

[MaximPlusov]

Included into release 1.30.1