https://bugs.documentfoundation.org/show_bug.cgi?id=154984

Michael Stahl (allotropia) <[email protected]> changed:

           What    |Removed                     |Added
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                 CC|                            |[email protected]

--- Comment #7 from Michael Stahl (allotropia) <[email protected]> ---
found out the following, testing with Evince:

the form controls are painted if this key is present below /AcroForm:

/NeedAppearances true

it is explicitly omitted when signing is enabled, or any version of PDF/A.

however, the form controls themselves are in the PDF, and if you know where
they are you can click and select the forms (at least in Evince).

  A flag specifying whether
  to construct appearance streams and appearance
  dictionaries for all widget annotations in the document (see
  12.7.4.3, "Variable text"). Default value: false. A PDF writer
  shall include this key, with a value of true, if it has not
  provided appearance streams for all visible widget
  annotations present in the document.

i don't have PDF/A specs so it's not clear if "/NeedAppearances true" would be
allowed by any of the versions (could be copypasta, there is another
form-related check elsewhere that is only for version 1).

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