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discourse/plugins/spoiler-alert
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Exact
Renato Atilio d62cc48d9c
DEV: to-markdown prosemirror HTML parsing (#35563) 
Replaces the custom ~1000-line `to-markdown` converter with ProseMirror's schema-based parsing and serialization pipeline, reusing the same extensions that power the rich editor. The old converter duplicated logic the extensions already implement (image formatting, mention/hashtag serialization, table handling, list nesting, etc.) — a single pipeline means one set of rules, fewer divergence bugs, and plugin extensions work in both directions automatically.

### Core change

- `toMarkdown()` is now async and lazy-loads ProseMirror on first use.
- Cooked→markdown serialization runs through the registered rich-editor extensions, so both conversion directions share one source of truth.

### QuoteState and quote callers

Making `toMarkdown()` async changed the quote flow. `QuoteState` now stores the selection's HTML and exposes an async `markdown()`; `buffer` is the plain-text selection. Every caller that needs markdown was updated to await `markdown()`:

- Topic controller (`selectText`, `replyToPost` including EmbedMode, `replyAsNewTopic`, `buildQuoteMarkdown`).
- Nested controller — forwards the full selection state via the new `copyFrom`.
- Fast-edit modal and `computeSupportsFastEdit`.
- discourse-ai post-helper menu — now sends markdown (not plain text) to the AI endpoints.

`markdown()` snapshots `opts` before awaiting so a concurrent selection change can't mis-pair the result.

### Plugin API

- Removed plugin-specific `addTagDecorateCallback`/`addTextDecorateCallback` usage from local-dates and spoiler-alert (the old APIs are kept as deprecated no-ops). local-dates now uses a `transformParsedHTML` rich-editor extension hook.

### Extractions and sharing

- Word paste handling moved into a dedicated `word-paste.js` extension.
- Quote-selection list-structure preservation moved into `preserve-list-structure.js`.
- `normalizeTable` is shared between the paste plugin and the serializer for consistent table output across editor modes.

### Quoting fix

- `selectedHTML` drops the empty trailing block a triple-click leaves behind. A triple-click extends the selection's end to the start of the following block, so `cloneContents()` would otherwise clone an empty `<blockquote>` that serializes to a stray `> ` in the quote.
2026-05-29 18:14:32 -03:00
..
assets DEV: to-markdown prosemirror HTML parsing (#35563) 2026-05-29 18:14:32 -03:00
config I18N: Update translations (#39701) 2026-05-04 21:30:12 +02:00
spec DEV: Restore and fix ProseMirror+spoiler spec (#39543) 2026-04-27 10:41:53 +02:00
test/javascripts DEV: to-markdown prosemirror HTML parsing (#35563) 2026-05-29 18:14:32 -03:00
package.json DEV: Add a script for generating external types in discourse-types (#37095) 2026-03-09 20:37:43 +01:00
plugin.rb
README.md UX: Removed a redundant git pull statement from the docs (#30801) 2025-01-16 11:13:51 +00:00
tsconfig.json DEV: Add a script for generating external types in discourse-types (#37095) 2026-03-09 20:37:43 +01:00

README.md

discourse-spoiler-alert

https://meta.discourse.org/t/discourse-spoiler-alert/12650/

Spoiler plugin for Discourse highly inspired by the spoiler-alert jQuery plugin.

Usage

In your posts, surround text or images with [spoiler] ... [/spoiler]. For example:

I watched the murder mystery on TV last night. [spoiler]The butler did it[/spoiler].

Installation

  • Add the plugin's repo url to your container's app.yml file
hooks:
  after_code:
    - exec:
        cd: $home/plugins
        cmd:
          - mkdir -p plugins
          - git clone https://github.com/discourse/docker_manager.git
          - git clone https://github.com/discourse/discourse-spoiler-alert.git
  • Rebuild the container
cd /var/discourse
./launcher rebuild app

License

MIT