Hacktoberfest 2026: le issue che i maintainer hanno segnato per ottobre, aperte e adatte ai principianti. Sfoglia le issue Hacktoberfest

DecoratedCodeBlock has no docx/pptx renderer — code chunk `filename` header silently dropped

Aperta
  • Qualcosa non va?
#14,906 1 commento 0 reazioni 0 assegnatari Vedi su GitHub

I maintainer di solito rispondono entro 1 giorno

Nessuno ha ancora preso questa issue.

Valutazione

Difficoltà
3/5
Tempo stimato
1-2 giorni
Idoneità per principianti
72/100
Tipo di issue
Bug
Chiarezza
Abbastanza chiara
Stato di attività
Attiva
Stack tecnologico
lua
Ambito
cli, tooling

Direzione di ricerca

Start with src/resources/filters/customnodes/decoratedcodeblock.lua and compare the existing HTML and LaTeX renderers with the fallback path. Render the provided repro with --to docx and --to pptx, then verify that a visible filename representation appears before the code block while HTML and LaTeX behavior remains unchanged.

Scritto dal modello di indicizzazione a partire dal testo della issue.

Descrizione

code-blocks enhancement

Summary

A code block decorated with a filename (e.g. {r filename="hello.R"} or a .filename attribute) renders correctly in HTML, LaTeX, and Markdown output, but the filename header is silently dropped for docx and pptx (and any other format with no dedicated renderer registered).

Where the gap is

src/resources/filters/customnodes/decoratedcodeblock.lua registers exactly four renderers for the DecoratedCodeBlock custom AST node:

  1. A default/fallback renderer (predicate always true) — walks the code block for folding only: 
    _quarto.ast.add_renderer("DecoratedCodeBlock",
  function(_) return true end,
  function(node)
    return _quarto.ast.walk(node.code_block, { CodeBlock = render_folded_block })
  end)
  2. A markdown renderer (_quarto.format.isMarkdownOutput())
  3. A latex renderer (_quarto.format.isLatexOutput())
  4. An html renderer (_quarto.format.isHtmlOutput())

Only the html and latex renderers actually read node.filename and render a header for it. Since docx/pptx match none of the three specific predicates, they fall through to the default renderer, which never reads node.filename (or node.caption) at all — it only walks for render_folded_block (itself a no-op for non-HTML output). The result: the code block content survives, but the filename header silently disappears, with no warning.

Repro

---
title: repro
---

```{.python filename="hello.py"}
print("hello")


Render with `quarto render repro.qmd --to docx` (or `--to pptx`). The code block appears; the "hello.py" filename header does not. Compare with `--to html` or `--to latex`, both of which show it.

## Suggested fix

Add a docx/pptx-aware renderer for `DecoratedCodeBlock` (or extend the default renderer to check `_quarto.format.isDocxOutput()`/`isPowerPointOutput()`) that emits *some* visible representation of `node.filename` — e.g. a bold paragraph immediately before the code block, mirroring the semantic intent of the html wrapper (`code-with-filename`) and the latex `\caption`, adapted to what Pandoc's docx/pptx writers can represent natively (Word/PowerPoint have no custom CSS to hook into, so this would need to be a plain paragraph/text run rather than a styled wrapper).

## Context

Found while auditing `decoratedcodeblock.lua`'s renderer coverage against Pandoc's non-core output targets (docx/pptx) for a project that reuses these filters. Confirmed against a fresh clone at `v1.11.3` (and current `main`, `83d48d8e8` — the file is unchanged between the two).
Lingua principale
JavaScript
Stelle
6.1k
Fork
463
Merge medio
21h 14m
PR unite (30g)
60

Preparare l'ambiente

Come iniziare

  1. Leggi tutta la issue e poi la guida ai contributi del progetto.
  2. Commenta sulla issue per dire che te ne occupi tu — evita che due persone facciano lo stesso lavoro.
  3. Fai un fork del repository e lavora su un branch.
  4. Apri una pull request che faccia riferimento al numero della issue.

Altre issue di quarto-dev/quarto-cli

Tutte le issue di quarto-dev/quarto-cli

Issue simili

Altre issue su JavaScript

Ricevi le nuove issue nella tua casella

Un breve riepilogo di issue GitHub adatte ai principianti.