I have the same problem. But I would like content under either heading 1 or 
2 not to show up on a slide. I posted both here 
<https://groups.google.com/g/pandoc-discuss/c/mK2k59mtD5k/m/67EL5B2uAgAJ> and 
in tex.se 
<https://tex.stackexchange.com/questions/630390/add-a-beamer-note-to-a-section-slide-using-pandoc-and-markdown>. 
I am on 2.11.2 so I would hate to have to roll all the way back to 2.6!

On Tuesday, August 25, 2020 at 10:39:21 PM UTC+2 tch...-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org wrote:

>
> Dear John,
>
> Thank you again for your super prompt response - very much appreciated, 
> amazing.
> Last thing I want is to waste your time and kindness and support.
> Therefore, I allowed myself to create a MWE, as I think we are on 
> different wavelengths.
> https://github.com/tchevri/BookdownExample 
>
> Opened as a project in RStudio, it compiles with a single click  (build 
> book radio button, bookdown::pdf_book).
> with Pandoc 2.6 - i get precisely what i look for - new title slides for 
> every lecture set, works perfect.
> with pandoc >2.7, because of the reveal.js request that impacted beamer, I 
> am getting a spurious slide, which I cannot get rid of, containing the 
> current section header.
>
> I am using XieYiHui's bookdown, so i think yes, I can make my bookdown use 
> a custom template by adding 'template:' to my YAML metadata.
> As i said, I even see it in the command line when I build the 
> book: "C:/PROGRA~1/Pandoc/pandoc"  +RTS -K512m -RTS ./index.split.md --template 
> my-template.tex etc etc....
> I tried so many things - setting the variable in the YAML metadata or with 
> -V is one of the many things I tried.
>
> Please do allow me to think you have a different issue in mind - you do 
> handle so many (and I am so impressed you can, i would not be able to).
> pre 2.7, non slide level content was just ignored.
> Post 2.7 *anything* above a slide level gets slapped automatically onto a 
> slide.
> That's the new behavior that's been causing me havoc.
>
> hence my suggestion that if I have level 3 slides, then content below 
> level 1 be not slapped onto a slide, only content below level 2, if that 
> makes sense?
> Of course, I'd be happy with any other resolution.
>
> Many thanks
> thomas
>
>  
> On Wednesday, August 26, 2020 at 2:14:14 AM UTC+8 John MacFarlane wrote:
>
>>
>> You can't make it use the template by adding 'template:' 
>> to your YAML metadata. Use a defaults file or just specify 
>> --template mytemplate.tex on the command line. 
>>
>> Also, you don't put $dayone$ in the body of your document. 
>> You can set this variable in YAML metadata or with -V 
>> on the command line. 
>>
>> --- 
>> dayone: true 
>> ... 
>>
>> or 
>>
>> -Vdayone 
>>
>>
>>
>> Thomas Chevrier  writes: 
>>
>
>> > Thank you again John for taking the time again and again to respond - 
>> > totally appreciated, it's amazing. 
>> > 
>> > As a consequence, I took the entire day to try your solution, google 
>> > frantically, but I failed miserably. 
>> > I will spare you the details of everything I tried, but here is what i 
>> > think is my best attempt: 
>> > 
>> > .1. 
>> > Read carefully: 
>> https://bookdown.org/yihui/rmarkdown/template-pandoc.html 
>> > 
>> > .2. 
>> > Download default.latex from your website: 
>> > https://github.com/jgm/pandoc-templates 
>> > 
>> > .3. 
>> > Rename the file to my-template.tex and, as per your email, line 460 
>> just 
>> > before $body$, add: 
>> > $if(dayone)$ 
>> > \mode<presentation> 
>> > { 
>> > \title[\CourseName{} Lecture $lecture-number$]{\CourseName{} \newline 
>> > \, Lecture $lecture-number$} 
>> > \date{\DayOne{}\Yr{}} 
>> > } 
>> > ### 
>> > \titlepage 
>> > $endif$ 
>> > 
>> > .4. 
>> > In my bookdown, add the $dayone$ custom Pandoc variable 
>> > # Notations {#notations} 
>> > ## Mathematics 
>> > $dayone$ 
>> > ```{r Lecture1Outline, eval = (out_type=="beamer"), echo=FALSE, 
>> > results='asis'} 
>> > ``` 
>> > ```{r Lecture1Slide1, eval = (out_type=="beamer"), echo=FALSE, 
>> > results='asis'} 
>> > ``` 
>> > `r if (out_type=="beamer") "- "` $h = \left(h_{1}, h_{2}, \ldots, 
>> > h_{n}\right)$ denotes a vector (lowercase) 
>> > 
>> > etc. etc... 
>> > 
>> > .5. 
>> > add "template: my-template.tex" to my YAML so that "--template 
>> > my-template.tex" is being correctly added as an option to Pandoc. 
>> > 
>> > OUTCOME: 
>> > 
>> > I still get the undesired slide... 
>> > "... 
>> > Mathematics 
>> > 𝑑𝑎𝑦𝑜𝑛𝑒 
>> > ..." 
>> > 
>> > I check the .rmd file. 
>> > It has 
>> > <!--chapter:end:index.Rmd--> 
>> > # Notations {#notations} 
>> > ## Mathematics 
>> > $dayone$ 
>> > etc. etc... 
>> > 
>> > the .tex file has: 
>> > 
>> > \hypertarget{mathematics}{% 
>> > \subsection{Mathematics}\label{mathematics}} 
>> > \begin{frame}{Mathematics} 
>> > \(dayone\) 
>> > \end{frame} 
>> > 
>> > I am so sorry - I feel crummy I could not figure this one out after so 
>> many 
>> > hours and I Thank you in advance for any further help on this issue 
>> that 
>> > has drawn me for nearly 18 months. 
>> > Many thanks 
>> > thomas 
>> > 
>> > PS: note that I have 
>> > before_body: beamer_prefix.tex 
>> > and that works well for setting the initial cover page (syllabus) - the 
>> > issue is really after, as I used this mode<presentation> to redefine 
>> the 
>> > elements of the title slide on the fly (day 1, 2, etc of the course) 
>> > 
>> > On Tuesday, August 25, 2020 at 12:22:26 PM UTC+8 John MacFarlane wrote: 
>> > 
>> >> 
>> >> If that's what you need, then a custom template could provide it. 
>> >> Just add this stuff to a custom template, with variables in the 
>> >> varying parts: 
>> >> 
>> >> \mode<presentation> 
>> >> { 
>> >> \title[\CourseName{} Lecture $lecture-number$]{\CourseName{} \newline 
>> \, 
>> >> Lecture $lecture-number$} 
>> >> \date{\DayOne{}\Yr{}} 
>> >> } 
>> >> ### 
>> >> \titlepage 
>> >> 
>> >> $body$ 
>> >> 
>>
> >> "Chevrier, Thomas" writes: 
>>
> >> 
>> >> > First of all, thank you so much for taking the time to reply - 
>> really 
>> >> much 
>> >> > appreciated, all the more given how busy I see you are, with so many 
>> >> > awesome improvements. 
>> >> > I love this "raw beamer" attribute, might make my document a lot 
>> more 
>> >> > readable, yet to try it for other purposes. 
>> >> > Unfortunately, this suggested solution does not help the issue at 
>> stake. 
>> >> > 
>> >> > The issue is for the content not to get forced slapped onto a slide. 
>> >> > To create a new title page, I need the following piece of code: 
>> >> > \mode<presentation> 
>> >> > { 
>> >> > \title[\CourseName{} Lecture 1]{\CourseName{} \newline \, Lecture 1} 
>> >> > \date{\DayOne{}\Yr{}} 
>> >> > } 
>> >> > ### 
>> >> > \titlepage 
>> >> > 
>> >> > And this {...} code cannot sit inside a frame or a latex error is 
>> thrown 
>> >> (! 
>> >> > Illegal parameter number in definition of \iterate.). 
>> >> > After 2.7 - there is no more option for me to write content outside 
>> a 
>> >> frame 
>> >> > - everything is forced into a frame. 
>> >> > "raw beamer" attribute does not escape this behavior unfortunately. 
>> >> > 
>> >> > Hence my suggestion last night - i don't know if that would be 
>> acceptable 
>> >> > or even useful? 
>> >> > But i have been thinking that I am perfectly fine with level -2 
>> content 
>> >> not 
>> >> > being forced onto slides. 
>> >> > From what I read, it looks like reveal.js users only need level -1 
>> >> content 
>> >> > slapped onto slides? 
>> >> > Of course, I'd be happy with any other solution you think is best. 
>> >> > 
>> >> > Many thank 
>> >> > thomas 
>> >> > 
>> >> > 
>> >> > On Tue, Aug 25, 2020 at 4:00 AM John MacFarlane 
>>
> >> wrote: 
>> >> > 
>> >> >> 
>> >> >> If you use the raw attribute to mark up content as "raw beamer," 
>> >> >> as suggested earlier in this thread, it will not appear in 
>> >> >> reveal.js output. Demo here: 
>> >> >> 
>> >> >> 
>> >> >> 
>> >> 
>> https://pandoc.org/try/?text=%23+Introduction%0A%0A%60%60%60%7B%3Dbeamer%7D%0AHey+this+is+raw+beamer!%0A%60%60%60%0A%0A%23%23+Slide+one%0A%0Acontent%0A%0A%23%23%23+Vertical+slide%0A%0Acontent+vertical%0A&from=markdown&to=revealjs&standalone=0 
>> >> >> 
>> >> >> 
>>
> >> >> Thomas Chevrier  writes: 
>>
> >> >> 
>> >> >> > Hi folks, 
>> >> >> > 
>> >> >> > it's been exactly a year now and I am still not able to upgrade 
>> my 
>> >> >> version 
>> >> >> > of Pandoc - stuck pre 2.7, because of the adverse change. 
>> >> >> > Indeed, the "upgrade" for reveal.js users caused my latex beamer 
>> code 
>> >> to 
>> >> >> > break down. 
>> >> >> > I have tried multiple things without luck - I also tried a lua 
>> filter, 
>> >> >> but 
>> >> >> > that did not work - no matter what, the content gets "slapped" 
>> onto a 
>> >> >> slide. 
>> >> >> > As JGM suggests (was great watching him talk about Pandoc at TUG 
>> 2020 
>> >> >> > keynote address), I'd love to be able to simply be able to have 
>> >> content 
>> >> >> > escape being slapped onto a slide - I believe that's precisely 
>> the 
>> >> >> spirit 
>> >> >> > of Beamer, which uses <mode> heavily for that purpose. 
>> >> >> > I also thought that was the spirit of pandoc - as you were 
>> setting in 
>> >> >> the 
>> >> >> > yaml header your level for displaying on slides, but i have been 
>> >> clearly 
>> >> >> > proven wrong. :-( 
>> >> >> > One option would be to recompile pandoc without that change, but 
>> >> because 
>> >> >> of 
>> >> >> > the bloomberg API, I am forced to be on windows, which would make 
>> this 
>> >> >> > solution cumbersome at best (would be straightforward on linux 
>> >> though). 
>> >> >> > 
>> >> >> > FYI, I posted back then on SO, got only 2 upvotes and 2 
>> bookmarks, but 
>> >> >> no 
>> >> >> > answer, not even a comment :-( 
>> >> >> > 
>> >> >> 
>> >> 
>> https://stackoverflow.com/questions/57614387/pandoc-4317-forces-content-under-title-slides-to-be-included-in-a-frame-in-pand 
>> >> >> > 
>> >> >> > 
>> >> >> > Could anyone *please* help me? 
>> >> >> > many thanks in advance 
>> >> >> > thomas 
>> >> >> > 
>> >> >> > 
>> >> >> > On Wednesday, August 28, 2019 at 12:23:15 AM UTC+8 John 
>> MacFarlane 
>> >> wrote: 
>> >> >> > 
>> >> >> >> 
>> >> >> >> To summarize the issue here, which concerns a change to slide 
>> >> >> >> show formats: 
>> >> >> >> 
>> >> >> >> Prior to 2.7, versions of pandoc only put material under the 
>> "slide 
>> >> >> >> level" headings on slides. If you set slide level to 2, then 
>> >> >> >> only material under level-2 headings would appear on slides, 
>> >> >> >> and text under level-1 headings would not appear at all 
>> >> >> >> (though level-1 headings would create "title slides" with 
>> >> >> >> just the section title). 
>> >> >> >> 
>> >> >> >> Reveal.js users consistently complained (#4317, #5237) that 
>> >> >> >> this made it hard to structure reveal.js 2D slide shows, in 
>> >> >> >> which it is common to have the "top" slide on each column 
>> >> >> >> contain both a title and some text. 
>> >> >> >> 
>> >> >> >> In response, I changed pandoc in 2.7 -- as the changelog says, 
>> >> >> >> 
>> >> >> >> > Slide show formats behavior change: content under headers less 
>> >> >> >> > than slide level is no longer ignored, but included in the 
>> title 
>> >> >> >> > slide (for HTML slide shows) or in a slide after the title 
>> slide 
>> >> >> >> > (for beamer). This change makes possible 2D reveal.js 
>> slideshows 
>> >> >> >> > with content in the top slide on each stack (#4317, #5237). 
>> >> >> >> 
>> >> >> >> The change to reveal.js has been welcomed by reveal.js users, 
>> >> >> >> but the change to beamer is apparently not welcome by everyone. 
>> >> >> >> The reason I made the change to both formats is because I want 
>> >> >> >> slide shows to work the same no matter what output format you 
>> >> >> >> use. (So you can switch from beamer to reveal.js, for example, 
>> >> >> >> and the slides will look more or less the same.) 
>> >> >> >> 
>> >> >> >> I had thought the beamer change was innocuous, since it could 
>> >> >> >> be worked around by people who wanted to include content under 
>> >> >> >> top-level section headings but not in the slides, e.g. by using 
>> >> >> >> a filter to strip out this content. 
>> >> >> >> 
>> >> >> >> Unfortunately, Thomas Chevrier's use case can't be handled that 
>> >> >> >> way. He wants to insert raw tex commands that (a) can't be 
>> >> >> >> stripped out but (b) only work if they're outside the 
>> >> >> >> 'frame' environment created for a slide. I can't think of any 
>> >> >> >> workaround for this. 
>> >> >> >> 
>> >> >> >> One possible course of action would be to revert the beamer 
>> >> >> >> change while keeping the reveal.js change. This would 
>> potentially 
>> >> >> >> have two bad consequences: 
>> >> >> >> 
>> >> >> >> 1) slide shows would render differently (in content, not just 
>> >> >> >> form) in reveal.js and beamer. 
>> >> >> >> 
>> >> >> >> 2) this may break slide shows that were constructed using the 
>> >> >> >> new behavior since 2.7 was released. 
>> >> >> >> 
>> >> >> >> A less radical change might be to introduce special Div whose 
>> >> >> >> contents get moved outside the slide itself. Anyway, comments 
>> >> >> >> welcome. 
>> >> >> >> 
>> >> >> >> 
>> >> >> >> 
>> >> >> > 
>> >> >> > -- 
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>> >> >> . 
>> >> >> 
>> >> 
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