fix: \f form feed character ({{< pagebreak >}}) not valid in PowerPoint (pptx)

news/changelog-1.7.md

@@ -57,6 +57,7 @@ All changes included in 1.7:
 - ([#11699](https://github.com/quarto-dev/quarto-cli/issues/11699)): Fix crash with `video` shortcode inside HTML comments.
 - Expose new `quarto.paths.tinytex_bin_dir` in Quarto's Lua API. If TinyTeX is found by Quarto, this will be set to the path to the `bin` directory of the TinyTeX installation where command line tool are located (e.g., `pdflatex`, `tlmgr`, etc.). If TinyTeX is not found, this will be `nil`, meaning Quarto will use the system PATH to find the command line tools.
 - Fix `pandoc.mediabag` Lua typings so autocompletions work with the Lua LSP integration.
+- ([#11896](https://github.com/quarto-dev/quarto-cli/pull/11896)): fix `\f` (`{{< pagebreak >}}`) form feed character not valid in PowerPoint (`pptx`).
 - ([#11664](https://github.com/quarto-dev/quarto-cli/issues/11664)): `lipsum` shortcode is no longer randomly generated by default, use `{{< lipsum random=true >}}` to restore randomness.
 
 ## Engines

src/resources/filters/quarto-pre/shortcodes-handlers.lua

@@ -309,6 +309,8 @@ function handlePagebreak()
 
   if FORMAT == 'docx' then
     return pandoc.RawBlock('openxml', pagebreak.ooxml)
+  elseif FORMAT == 'pptx' then
+    return {}
   elseif FORMAT:match 'latex' then
     return pandoc.RawBlock('tex', pagebreak.latex)
   elseif FORMAT:match 'odt' then
@@ -326,4 +328,4 @@ function handlePagebreak()
     return pandoc.Para{pandoc.Str '\f'}
   end
 
-end
+end

tests/docs/smoke-all/2025/02/01/11896.qmd

@@ -0,0 +1,19 @@
+---
+format: pptx
+_quarto:
+  tests:
+    pptx:
+      ensurePptxMaxSlides:
+        - 1
+      ensurePptxRegexMatches:
+        - ['<a:t>Before<\/a:t><\/a:r><\/a:p><a:p><a:pPr lvl="0" indent="0" marL="0"><a:buNone \/><\/a:pPr><a:r><a:rPr \/><a:t>After<\/a:t>']
+        - 1
+---
+
+## Slide 
+
+Before
+
+{{< pagebreak >}}
+
+After