fix(slack): render <@user>, <@subteam^group> and <#channel> mentions as rich-text elements - #1763
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Aaronontheweb merged 3 commits intoAug 5, 2026
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…as rich-text elements The Block Kit converter parsed bold/italic/code/links but passed Slack-native mention syntax (<@U...>, <@SubTeam^S...>, <#C...>) through as literal text, because rich_text blocks render their own elements and ignore the mrkdwn Text fallback on modern clients. Agents therefore had no way to mention users in outbound Slack messages. Add mention patterns to the inline parser emitting RichTextUser, RichTextUserGroup and RichTextChannel (all present in SlackNet 0.17.x), including the labeled forms (<@u123|name>, <#C123|general>). Covers paragraphs, list items and quotes via the shared ParseInlineElements. Adds 5 converter tests: user, labeled user, user group, channel, and user mention inside a bullet list item.
…and bang-form usergroup mentions, private channels
Aaronontheweb
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August 5, 2026 16:19
Aaronontheweb
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Supersedes #1759 by @CumpsD — this branch contains the author's original commit (
b5fe6276) unchanged, plus follow-up fixes on top. All credit for the feature goes to @CumpsD.Original feature (by @CumpsD): renders Slack user, user-group, and channel mentions as Block Kit rich-text elements instead of literal text.
Follow-up fixes (from review of #1759):
usergroup_idnow carries the bare group ID (S0123ABC) — thesubteam^prefix was being baked into the field, which Slack won't resolve (usergroup element docs)<@subteam^S123|@eng-team>) and the documented bang form<!subteam^S123>(formatting docs)G/D-prefixed conversation IDs (private channels, group DMs), not justCTests: 5 new tests in
SlackBlockConverterTests(user, labeled user, user-group, labeled user-group, bang-form user-group, channel, private channel, in-list-item). All 33 SlackBlockConverter tests pass locally.