tengu_hushed_wren
A Claude Code feature flag, read out of the shipped bundle. It was in the build from v2.1.315 and was gone by v2.1.317.
When long Bash output is cut, the preview can now keep both its start and its end, with the full text saved to a file
Not Anthropic's. This is the line from the earliest changelog entry here that named it, v2.1.315.
In the changelogs
3Releases whose published page names tengu_hushed_wren.
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v2.1.317
A feature's remote switch now goes by a different name
A feature that followed one remote switch now follows a different one, and both count as off when the server sends nothing
gate cited by this entry, found in this entry's text
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v2.1.317
Recording a subagent's task-list calls now uses a differently named switch
Saving a subagent's task-list calls in its result is still off by default, but the remote switch for it was renamed, so old rollouts no longer apply
gate cited by this entry
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v2.1.315
Long Bash output previews can show the end as well as the start
When long Bash output is cut, the preview can now keep both its start and its end, with the full text saved to a file
gate cited by this entry
Gate readings
2| Release | Resolved | This account | Anonymous | Compiled default |
|---|---|---|---|---|
| v2.1.317 read on another version | Not enough to say | no value returned | no value returned | not a boolean we can read |
| v2.1.315 read on another version | Not enough to say | no value returned | no value returned | off |
Two arms, because they disagree: this account is the one account this site reads and anonymous is a baseline with no identity attached. A reading says nothing about your account, and off cannot rule out a rollout both readings sit outside of. What these readings can and cannot show.
First cited
0No release's published evidence quotes this name. The ledger indexes the Evidence lines of every changelog on this site, so this says nobody here has ever quoted it; it says nothing about how old the name is.
Presence across releases
2Build by build
4One row per release since the first build this name was read out of. Absent means the build was read and the name was not in it, never mined means no bundle for that release was ever archived, and a declared type or a default is only ever what that release's own bundle stated.
Read out of the published npm bundle release by release, and out of Anthropic's own documentation as this site captured it. Nothing on this page is a description anybody here wrote about what the feature flag does. All feature flags.