[XeTeX] potential new feature: \XeTeXgenerateactualtext

Jonathan Kew jfkthame at gmail.com
Tue Feb 23 16:00:21 CET 2016

On 23/2/16 14:52, Adam Twardoch (List) wrote:
> Jonathan,
> this is splendid. Adding support for the PDF "ActualText" tagging layer
> is a huge step.
> I wonder — what happens in case of mathematical formulae?

At this point, nothing in particular. :)

> I think it would be rather clever to embed the TeX notation or even, huh
> huh, MathML into the ActualText layer for the math mode — per equation,
> of course :) .

I think these are ideas that could usefully be explored/implemented at 
the macro level, rather than being built in to the engine.


  Or use the "Unicode math linear format" as proposed by
> Microsoft:
> http://www.unicode.org/notes/tn28/UTN28-PlainTextMath-v3.pdf
> A.
> Sent from my mobile phone.
> On 23.02.2016, at 15:43, Jonathan Kew <jfkthame at gmail.com
> <mailto:jfkthame at gmail.com>> wrote:
>> The code for the \XeTeXgenerateactualtext feature (it's an integer
>> parameter; set it to 1 to get ActualText added to the PDF, for better
>> copy/paste and search in Acrobat) is now on sourceforge, in an
>> "actualtext" branch, for anyone who wants to try building and
>> experimenting with it.
>> Note that this requires a new version of xdvipdfmx, as it uses a new
>> DVI opcode. The patch for xdvipdfmx is attached here (based on the
>> current TeXLive svn source).
>> Akira, if you could check that the patch seems OK, that would be
>> great. I've not really looked at dvipdfm-x code in a long time. I
>> haven't pushed this it to TL yet, as it's all rather experimental, but
>> I hope we can safely include it for TL'16.
>> JK
>> <xdvipdfmx-for-xetex-0_99995.patch>
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