YoursFunny/TelegramTwitterMediaBot
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feat(send): quote a long post's text in an expandable blockquote

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A post whose text (the split `title` plus `content`, joined by
`site::compose_text`) reaches `CAPTION_QUOTE_TEXT_CHARS` — default 200,
`0` disables — now has that text wrapped in `<blockquote expandable>`
inside its caption, leaving the URL and author line outside the quote.

Applied at the send boundary (`send_media_sequence`, `send_animation` and
the inline answers), where the caption is already truncated and the same
cache snapshot supplies the text, so a fresh send, a link-cache resend
and a queued retry all decide identically. The text is located as what
follows the author link, with the visible prefix accepted as a match
because `truncate_caption` may cut inside it — that keeps the longest
posts, the ones that most need folding, quoted. Captions whose layout
moves the text elsewhere (pixiv's title-inside-a-link, a `/set_format`
that puts `{title}`/`{content}` first) stay unquoted rather than risking
a blockquote nested in a tag, and a caption that already carries one is
never wrapped again.

Telegram measures a caption *after entities parsing*, so the tags cost no
length and the 1024-character limit cannot be breached; retries replay
the unwrapped caption, so a threshold change takes effect immediately.
The edit-before-forward rewrite stays unquoted by design.

Verified against Telegram: a media-group caption built this way comes
back with `caption_entities` `url` @0, `text_link` @50,
`expandable_blockquote` @56 — the quote starts after the author line.
This commit is contained in:
YoursFunny
2026-09-18 00:50:30 +08:00
parent 52184ba6fb
commit af96caff40
9 changed files with 242 additions and 9 deletions
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README.en.md
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@@ -6,6 +6,7 @@ A Telegram bot that turns post links from X / Twitter, Pixiv, Bluesky, Misskey (
- Sending a link in a private chat fetches and sends the images, videos and GIFs automatically; oversized media is split into batches
- Text-only posts report "no media"; unsupported links are silently ignored
- Long posts (text ≥ `CAPTION_QUOTE_TEXT_CHARS`, default 200) show **the text part** of their caption inside a collapsible blockquote, with the link and author line left outside it
- Inline queries (`@bot <link>`)
- Bind a forward channel for automatic forwarding; edit the caption before forwarding and apply custom templates
- Failed sends are retried automatically with persistence; the user is notified after retries are exhausted
@@ -87,6 +88,7 @@ Telegram only accepts ports 443/80/88/8443.
| `BOT_ADMIN` | Admin chat IDs, comma-separated; receives start/stop notifications |
| `EDIT_MESSAGE_TTL_SECONDS` | Edit-before-forward record expiry in seconds, default 86400 |
| `LINK_CACHE_TTL_SECONDS` | Link-result cache expiry in seconds, default 604800 (7 days) |
| `CAPTION_QUOTE_TEXT_CHARS` | **The text part** of the caption (the joined `{title}` + `{content}`) is wrapped in a collapsible blockquote once it reaches this many characters, default 200; `0` disables |
| `DATA_DIR` | Data directory (where the SQLite `task_queue.db` lives), default `data` (relative to the working directory, created automatically) |
| `RUST_LOG` | Log level |
| `TELOXIDE_PROXY` | HTTP proxy (e.g. `http://127.0.0.1:10808`); applies to both the Telegram Bot API and site fetches — required on restricted networks (e.g. behind the GFW) |