Beamer does not work

#1

hello
i dont understand if texmacs-users still works
here https://lists.texmacs.org/wws/arc/texmacs-users/2026-08/
there are no message in september 2026 althought i’ve just posted one…
so i bring my question here :slight_smile:
——————————————————
hello

for the first time i am using the beamer mode for a lesson i give in 2 days
and i encouter a pb
— - — - — - — - — - — - — - — - — - — - — - — - — - — - — - — -
i have created this :

000 some text
\unroll
AAAAAA inside unroll
focus -> insert argument after
BBBB
focus -> insert argument after
CCCC
i leave the unroll environment
DDDD

i export pdf and the pdf is ok, with several pages :
page1 : 0 and A and D
page 2 : 0 and A and B and D
page 3 : 0 and A and B anc C and D

— - — - — - — - — - — - — - — - — - — - — - — - — - — - — - — -
now i go on and it does not work any longer :

the cursor being in D, so outside the unroll environment (in no environment in fact)
focus -> insert argument after
then i write some text for my slide n° 2 : EEEEE

the, i export pdf and the pdf is wrong
page1 : 0 and A and B anc C and D
page 2 : EEEE

— - — - — - — - — - — - — - — - — - — - — - — - — - — - — - — -

  • in the pref, i have unchecked then checked « expot pdf : develop slides »
    the result seems to be the same
  • i have found for a video with « beamer texmacs -latex » and not understood the results
  • i have searched in the jolly writer, i dont really understand

— - — - — - — - — - — - — - — - — - — - — - — - — - — - — - — -

if anyone can help me…

thanks !

Vincent

#2

I can’t reproduce this. I only get the result you describe when I select “Expand beamer slides” in Preferences->Convert->Pdf.

What version of TeXmacs are you using and can you provide an example file?

#3

Hello Jeroen, and thank you for having tryed

i can’t understand how to share a document here so i send you a dropbox link

the pdf : https://www.dropbox.com/t/6zpYjYmULPepcpRm
i takes 3 pages althought the first diapo sould be decomposed into several pages itselft

the tm : https://www.dropbox.com/t/CHIiWZRA5Oiw79Ly

I am using GNU TeXmacs 2.1.4 on a Mac mini M4 , running macOS 26.5 (Apple Silicon).

#4

It may be that there is a bug in TeXmacs, or it may be that there is a (subtle) feature of @vincent-douce document that prevents the exporting of unroll environments as multiple slides.

I have been able to get the multiple-slide exports of the document only by first converting it to the generic style and them back to beamer, losing in this way all slides except the first (I think, did not check this behaviour).

When I edited the document in the beamer style, even deleting everything did not revert the export behaviour to multiple slides. Did not yet check the difference between the empty file derived from the @vincent-douce one and the empty file that I get after conversion to generic style and back to beamer.

#5

I seem to get the desired result in this document by first switching from the Slideshow view to Beamer view.