https://bugs.documentfoundation.org/show_bug.cgi?id=142356

V Stuart Foote <vstuart.fo...@utsa.edu> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
            Summary|[accessibility] Save as     |[accessibility] filter save
                   |HTML includes caption       |as HTML places caption
                   |inside image                |inside image, export to
                   |                            |XHTML drops the caption
                   |                            |neither is good AT support
                 OS|Linux (All)                 |All
     Ever confirmed|0                           |1

--- Comment #7 from V Stuart Foote <vstuart.fo...@utsa.edu> ---
(In reply to stragu from comment #6)
> Hi Stuart
> 
> By "XSL-based XHTML filter", do you mean the one used when exporting as
> XHTML with "File > Export as... > XHTML"? If so, I said in the description
> that XHTML export saves the caption as text.
> 

Yes sorry, I missed your 
"Additional Info:
Interestingly, this does not happen with a freshly created document. Also, an
XHTML export has the caption as text." as I skimmed the ticket.

> 
> Also, do you confirm the behaviour when saving as HTML?

Yes the ancient HTML filter simply converts the image frame and its caption to
a GIF.  So the caption "Illustration 1: my caption text" is embedded into the
bitmap and not available to AT.

For XSL based 'Export' to XHTML, just the image is embedded as PNG in base64.
The frame caption is completely dropped.  And the alternative text is picked up
as normal text (not linked to the image). So an AT fail there as well.

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