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fix: paragraph-aware newline chunking (#1726)

Browse Source 
Thanks @tyler6204

Co-authored-by: Tyler Yust <64381258+tyler6204@users.noreply.github.com>
This commit is contained in:
Peter Steinberger
2026-01-25 13:24:00 +00:00
parent c3f5b4c416
commit 0130ecd800
17 changed files with 39 additions and 24 deletions
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2
docs/channels/bluebubbles.md
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@@ -196,7 +196,7 @@ Provider options:
- `channels.bluebubbles.sendReadReceipts`: Send read receipts (default: `true`).
- `channels.bluebubbles.blockStreaming`: Enable block streaming (default: `true`).
- `channels.bluebubbles.textChunkLimit`: Outbound chunk size in chars (default: 4000).
- `channels.bluebubbles.chunkMode`: `length` (default) splits only when exceeding `textChunkLimit`; `newline` splits on every newline and sends each line immediately during streaming.
- `channels.bluebubbles.chunkMode`: `length` (default) splits only when exceeding `textChunkLimit`; `newline` splits on blank lines (paragraph boundaries) before length chunking.
- `channels.bluebubbles.mediaMaxMb`: Inbound media cap in MB (default: 8).
- `channels.bluebubbles.historyLimit`: Max group messages for context (0 disables).
- `channels.bluebubbles.dmHistoryLimit`: DM history limit.

4
docs/channels/discord.md
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@@ -205,7 +205,7 @@ Notes:
## Capabilities & limits
- DMs and guild text channels (threads are treated as separate channels; voice not supported).
- Typing indicators sent best-effort; message chunking uses `channels.discord.textChunkLimit` (default 2000) and splits tall replies by line count (`channels.discord.maxLinesPerMessage`, default 17).
- Optional newline chunking: set `channels.discord.chunkMode="newline"` to split on each line before length chunking.
- Optional newline chunking: set `channels.discord.chunkMode="newline"` to split on blank lines (paragraph boundaries) before length chunking.
- File uploads supported up to the configured `channels.discord.mediaMaxMb` (default 8 MB).
- Mention-gated guild replies by default to avoid noisy bots.
- Reply context is injected when a message references another message (quoted content + ids).
@@ -307,7 +307,7 @@ ack reaction after the bot replies.
- `guilds.<id>.requireMention`: per-guild mention requirement (overridable per channel).
- `guilds.<id>.reactionNotifications`: reaction system event mode (`off`, `own`, `all`, `allowlist`).
- `textChunkLimit`: outbound text chunk size (chars). Default: 2000.
- `chunkMode`: `length` (default) splits only when exceeding `textChunkLimit`; `newline` splits on every newline before length chunking.
- `chunkMode`: `length` (default) splits only when exceeding `textChunkLimit`; `newline` splits on blank lines (paragraph boundaries) before length chunking.
- `maxLinesPerMessage`: soft max line count per message. Default: 17.
- `mediaMaxMb`: clamp inbound media saved to disk.
- `historyLimit`: number of recent guild messages to include as context when replying to a mention (default 20; falls back to `messages.groupChat.historyLimit`; `0` disables).

4
docs/channels/imessage.md
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@@ -219,7 +219,7 @@ This is useful when you want an isolated personality/model for a specific thread
## Limits
- Outbound text is chunked to `channels.imessage.textChunkLimit` (default 4000).
- Optional newline chunking: set `channels.imessage.chunkMode="newline"` to split on each line before length chunking.
- Optional newline chunking: set `channels.imessage.chunkMode="newline"` to split on blank lines (paragraph boundaries) before length chunking.
- Media uploads are capped by `channels.imessage.mediaMaxMb` (default 16).
## Addressing / delivery targets
@@ -254,7 +254,7 @@ Provider options:
- `channels.imessage.includeAttachments`: ingest attachments into context.
- `channels.imessage.mediaMaxMb`: inbound/outbound media cap (MB).
- `channels.imessage.textChunkLimit`: outbound chunk size (chars).
- `channels.imessage.chunkMode`: `length` (default) or `newline` to split on newlines before length chunking.
- `channels.imessage.chunkMode`: `length` (default) or `newline` to split on blank lines (paragraph boundaries) before length chunking.
Related global options:
- `agents.list[].groupChat.mentionPatterns` (or `messages.groupChat.mentionPatterns`).

2
docs/channels/matrix.md
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@@ -215,7 +215,7 @@ Provider options:
- `channels.matrix.initialSyncLimit`: initial sync limit.
- `channels.matrix.threadReplies`: `off | inbound | always` (default: inbound).
- `channels.matrix.textChunkLimit`: outbound text chunk size (chars).
- `channels.matrix.chunkMode`: `length` (default) or `newline` to split on newlines before length chunking.
- `channels.matrix.chunkMode`: `length` (default) or `newline` to split on blank lines (paragraph boundaries) before length chunking.
- `channels.matrix.dm.policy`: `pairing | allowlist | open | disabled` (default: pairing).
- `channels.matrix.dm.allowFrom`: DM allowlist (user IDs or display names). `open` requires `"*"`. The wizard resolves names to IDs when possible.
- `channels.matrix.groupPolicy`: `allowlist | open | disabled` (default: allowlist).

2
docs/channels/msteams.md
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@@ -415,7 +415,7 @@ Key settings (see `/gateway/configuration` for shared channel patterns):
- `channels.msteams.dmPolicy`: `pairing | allowlist | open | disabled` (default: pairing)
- `channels.msteams.allowFrom`: allowlist for DMs (AAD object IDs, UPNs, or display names). The wizard resolves names to IDs during setup when Graph access is available.
- `channels.msteams.textChunkLimit`: outbound text chunk size.
- `channels.msteams.chunkMode`: `length` (default) or `newline` to split on newlines before length chunking.
- `channels.msteams.chunkMode`: `length` (default) or `newline` to split on blank lines (paragraph boundaries) before length chunking.
- `channels.msteams.mediaAllowHosts`: allowlist for inbound attachment hosts (defaults to Microsoft/Teams domains).
- `channels.msteams.requireMention`: require @mention in channels/groups (default true).
- `channels.msteams.replyStyle`: `thread | top-level` (see [Reply Style](#reply-style-threads-vs-posts)).

2
docs/channels/nextcloud-talk.md
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@@ -114,7 +114,7 @@ Provider options:
- `channels.nextcloud-talk.dmHistoryLimit`: DM history limit (0 disables).
- `channels.nextcloud-talk.dms`: per-DM overrides (historyLimit).
- `channels.nextcloud-talk.textChunkLimit`: outbound text chunk size (chars).
- `channels.nextcloud-talk.chunkMode`: `length` (default) or `newline` to split on newlines before length chunking.
- `channels.nextcloud-talk.chunkMode`: `length` (default) or `newline` to split on blank lines (paragraph boundaries) before length chunking.
- `channels.nextcloud-talk.blockStreaming`: disable block streaming for this channel.
- `channels.nextcloud-talk.blockStreamingCoalesce`: block streaming coalesce tuning.
- `channels.nextcloud-talk.mediaMaxMb`: inbound media cap (MB).

4
docs/channels/signal.md
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@@ -111,7 +111,7 @@ Groups:
## Media + limits
- Outbound text is chunked to `channels.signal.textChunkLimit` (default 4000).
- Optional newline chunking: set `channels.signal.chunkMode="newline"` to split on each line before length chunking.
- Optional newline chunking: set `channels.signal.chunkMode="newline"` to split on blank lines (paragraph boundaries) before length chunking.
- Attachments supported (base64 fetched from `signal-cli`).
- Default media cap: `channels.signal.mediaMaxMb` (default 8).
- Use `channels.signal.ignoreAttachments` to skip downloading media.
@@ -170,7 +170,7 @@ Provider options:
- `channels.signal.historyLimit`: max group messages to include as context (0 disables).
- `channels.signal.dmHistoryLimit`: DM history limit in user turns. Per-user overrides: `channels.signal.dms["<phone_or_uuid>"].historyLimit`.
- `channels.signal.textChunkLimit`: outbound chunk size (chars).
- `channels.signal.chunkMode`: `length` (default) or `newline` to split on newlines before length chunking.
- `channels.signal.chunkMode`: `length` (default) or `newline` to split on blank lines (paragraph boundaries) before length chunking.
- `channels.signal.mediaMaxMb`: inbound/outbound media cap (MB).
Related global options:

2
docs/channels/slack.md
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@@ -349,7 +349,7 @@ ack reaction after the bot replies.
## Limits
- Outbound text is chunked to `channels.slack.textChunkLimit` (default 4000).
- Optional newline chunking: set `channels.slack.chunkMode="newline"` to split on each line before length chunking.
- Optional newline chunking: set `channels.slack.chunkMode="newline"` to split on blank lines (paragraph boundaries) before length chunking.
- Media uploads are capped by `channels.slack.mediaMaxMb` (default 20).
## Reply threading

4
docs/channels/telegram.md
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@@ -135,7 +135,7 @@ Notes:
## Limits
- Outbound text is chunked to `channels.telegram.textChunkLimit` (default 4000).
- Optional newline chunking: set `channels.telegram.chunkMode="newline"` to split on each line before length chunking.
- Optional newline chunking: set `channels.telegram.chunkMode="newline"` to split on blank lines (paragraph boundaries) before length chunking.
- Media downloads/uploads are capped by `channels.telegram.mediaMaxMb` (default 5).
- Telegram Bot API requests time out after `channels.telegram.timeoutSeconds` (default 500 via grammY). Set lower to avoid long hangs.
- Group history context uses `channels.telegram.historyLimit` (or `channels.telegram.accounts.*.historyLimit`), falling back to `messages.groupChat.historyLimit`. Set `0` to disable (default 50).
@@ -524,7 +524,7 @@ Provider options:
- `channels.telegram.accounts.<account>.capabilities.inlineButtons`: per-account override.
- `channels.telegram.replyToMode`: `off | first | all` (default: `first`).
- `channels.telegram.textChunkLimit`: outbound chunk size (chars).
- `channels.telegram.chunkMode`: `length` (default) or `newline` to split on newlines before length chunking.
- `channels.telegram.chunkMode`: `length` (default) or `newline` to split on blank lines (paragraph boundaries) before length chunking.
- `channels.telegram.linkPreview`: toggle link previews for outbound messages (default: true).
- `channels.telegram.streamMode`: `off | partial | block` (draft streaming).
- `channels.telegram.mediaMaxMb`: inbound/outbound media cap (MB).

2
docs/channels/whatsapp.md
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@@ -271,7 +271,7 @@ WhatsApp can automatically send emoji reactions to incoming messages immediately
## Limits
- Outbound text is chunked to `channels.whatsapp.textChunkLimit` (default 4000).
- Optional newline chunking: set `channels.whatsapp.chunkMode="newline"` to split on each line before length chunking.
- Optional newline chunking: set `channels.whatsapp.chunkMode="newline"` to split on blank lines (paragraph boundaries) before length chunking.
- Inbound media saves are capped by `channels.whatsapp.mediaMaxMb` (default 50 MB).
- Outbound media items are capped by `agents.defaults.mediaMaxMb` (default 5 MB).

2
docs/concepts/streaming.md
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@@ -38,7 +38,7 @@ Legend:
- `agents.defaults.blockStreamingChunk`: `{ minChars, maxChars, breakPreference? }`.
- `agents.defaults.blockStreamingCoalesce`: `{ minChars?, maxChars?, idleMs? }` (merge streamed blocks before send).
- Channel hard cap: `*.textChunkLimit` (e.g., `channels.whatsapp.textChunkLimit`).
- Channel chunk mode: `*.chunkMode` (`length` default, `newline` splits on each line before length chunking).
- Channel chunk mode: `*.chunkMode` (`length` default, `newline` splits on blank lines (paragraph boundaries) before length chunking).
- Discord soft cap: `channels.discord.maxLinesPerMessage` (default 17) splits tall replies to avoid UI clipping.
**Boundary semantics:**

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docs/gateway/configuration.md
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@@ -1131,7 +1131,7 @@ Reaction notification modes:
- `own`: reactions on the bot's own messages (default).
- `all`: all reactions on all messages.
- `allowlist`: reactions from `guilds.<id>.users` on all messages (empty list disables).
Outbound text is chunked by `channels.discord.textChunkLimit` (default 2000). Set `channels.discord.chunkMode="newline"` to split on line boundaries before length chunking. Discord clients can clip very tall messages, so `channels.discord.maxLinesPerMessage` (default 17) splits long multi-line replies even when under 2000 chars.
Outbound text is chunked by `channels.discord.textChunkLimit` (default 2000). Set `channels.discord.chunkMode="newline"` to split on blank lines (paragraph boundaries) before length chunking. Discord clients can clip very tall messages, so `channels.discord.maxLinesPerMessage` (default 17) splits long multi-line replies even when under 2000 chars.
Retry policy defaults and behavior are documented in [Retry policy](/concepts/retry).
### `channels.googlechat` (Chat API webhook)