You'll noticeTier: how much it should matter to you
3Useful: my rating, 1 to 5
3Signal: worth watching, 1 to 5
File MentionsArea: what it touches
ImprovementsKind: in v2.1.299,
ImprovementsSection of the release
Unclear It is not clear what reads files ahead of time, or whether that happens in ordinary sessions.
What
When you type @ followed by a file name, Claude Code adds that file to your message. Before, every @-mention was passed on as a reference only, a pointer to the file without its contents.
Now the outcome depends on the file:
Already read ahead of time and within a size and token limit: the contents are attached directly.
Not read ahead of time: the file stays a reference, as before.
Too large: the file is marked as unread, with the reason too_large.
Why
This can change whether Claude sees a mentioned file's contents straight away or only a pointer to it.
How sure we are
Something disagreesSomething we can check disagrees with this entry, or the writer said they could not settle it.
The writer flagged doubtIt is not clear what reads files ahead of time, or whether that happens in ordinary sessions.
