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charset="UTF-8" Content-Transfer-Encoding: quoted-printable This is definitely something in revealjs that change in version 4.1.1. It= =20 works ok with 4.1.0 pandoc -t revealjs --self-contained -o slide-self-contained.html --metadata= title=3D"test" -V revealjs-url=3Dhttps://unpkg.com/reveal.js@4.1.0/ slide.= md =E2=80=8B Le mardi 28 septembre 2021 =C3=A0 11:21:18 UTC+2, christophe dervieux a =C3= =A9crit : > Hello,=20 > > Here is a reproducible example of the issue > > curl --output background.jpg -L 'https://unsplash.com/photos/8OyKWQgBsKQ/= download?force=3Dtrue&w=3D1920' > > echo "# Slide {data-background-image=3D'background.jpg'}" > slide.md > echo "" >> slide.md > echo "Content" >> slide.md > > # Not self contained=20 > pandoc -t revealjs -s -o slide.html --metadata title=3D"test" slide.md > > # Self contained > pandoc -t revealjs --self-contained -o slide-self-contained.html --metada= ta title=3D"test" slide.md > > When using self-contained, the background image is no more working.=20 > Pandoc encodes to data: but it seems reveal.js does not know how to=20 > handle it. It split the encoded data: in two url component. > > It seems like a change in reveal 4 as using the same slide.md file with= =20 > different version seems to break.=20 > > What I tried:=20 > > - Pandoc 2.9.2.1 : last one compatible with reveal.js 3 I believe > =20 > pandoc.exe -t revealjs --self-contained -o slide-self-contained.html = --metadata title=3D"test" -V revealjs-url=3Dhttps://unpkg.com/reveal.js@3/ = slide.md > =20 > Works as expected=20 > - Pandoc 2.10: First to use reveal.js 4 > =20 > pandoc.exe -t revealjs --self-contained -o slide-self-contained.html= --metadata title=3D"test" -V revealjs-url=3Dhttps://unpkg.com/reveal.js@4/= slide.md > =20 > =20 > So it seems that something broke when upgrading.=20 > > Is this a known issue ? > Should I open an issue in Pandoc to track ? I believe this could be=20 > something in reveal.js not handling correctly encoded data: field. > > MANUAL still says ( > https://pandoc.org/MANUAL.html#background-in-reveal.js-and-beamer) > > Background images can be added to self-contained reveal.js slideshows and= =20 > to beamer slideshows. > > But maybe self-contained and revealjs does not work well.=20 > > Thank you > =E2=80=8B > --=20 You received this message because you are subscribed to the Google Groups "= pandoc-discuss" group. To unsubscribe from this group and stop receiving emails from it, send an e= mail to pandoc-discuss+unsubscribe-/JYPxA39Uh5TLH3MbocFF+G/Ez6ZCGd0@public.gmane.org To view this discussion on the web visit https://groups.google.com/d/msgid/= pandoc-discuss/34ae236d-5f4e-42be-8e18-68a5ce5b6f08n%40googlegroups.com. ------=_Part_1093_1041787799.1632823535496 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable

This is definitely so= mething in revealjs that change in version 4.1.1. It works ok with 4.1.0 

pandoc -t revealjs --self-contained -o slide-self-c=
ontained.html --metadata title=3D"test" -V revealjs-url=3Dhttps://unpkg.com=
/reveal.js@4.1.0/ slide.md
=E2=80=8B
Le mardi 28 septem= bre 2021 =C3=A0 11:21:18 UTC+2, christophe dervieux a =C3=A9crit=C2=A0:

Hello,

Here is a reproducible example = of the issue

curl --output background.=
jpg -L 'https://u=
nsplash.com/photos/8OyKWQgBsKQ/download?force=3Dtrue&w=3D1920'

echo "# Slide {data-background-image=3D'background.jpg'}"=
 > slide.md
echo "" >> slide.md
echo "Content" >> slide.md

# Not self contained=20
pandoc -t revealjs -s -o slide.html --metadata title=3D"test" sli=
de.md

# Self contained
pandoc -t revealjs --self-contained -o slide-self-contained.html --metadata=
 title=3D"test" slide.md

When using self-contained, the background image is no more working. P= andoc encodes to data: but it seems reveal.js does = not know how to handle it. It split the encoded data: in two url component.

It seems like a change in revea= l 4 as using the same slide.md file with different = version seems to break.

What I tried:

  • Pandoc 2.9.2.1 : last one compatible with re= veal.js 3 I believe
     pando=
c.exe -t revealjs --self-contained -o slide-self-contained.html --metadata =
title=3D"test" -V revealjs-url=3Dhttps://unpkg.com/reveal.js@3/ slide.md
    Works as expected
  • Pandoc 2.10: First to use reveal.js 4
      pandoc.exe -t revealjs --self-=
contained -o slide-self-contained.html --metadata title=3D"test" =
-V revealjs-url=3Dhttps://unpkg=
.com/reveal.js@4/ slide.md

So it seems that something brok= e when upgrading.

Is this a known issue ?
Shou= ld I open an issue in Pandoc to track ? I believe this could be something i= n reveal.js not handling correctly encoded data: fi= eld.

MANUAL still says (https://pandoc.org/MANUAL.html#background-in-re= veal.js-and-beamer)

Background images can be added = to self-contained reveal.js slideshows and to beamer slideshows.

But maybe self= -contained and revealjs does not work well. =

Thank you

=E2=80=8B

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