DisclaimerUnofficial, and not affiliated with Anthropic. Nearly all of this is read straight out of what ships: npm bundles, captured prompts, published docs. Anthropic's own notes go in verbatim, marked as theirs. The rest is my reading, and every entry carries the strings behind it. If one looks wrong, vote it down and say why.
The prompt input can now say whether Enter will submit or add a newline
Under the hood
Useful1Signal1
Elsewhere
The input box can now tell whether Return will submit or insert a newline.
What's wrong with this entry?
Anonymous. No account, no email.
What
The text input now exposes a willInsertNewline value that is true when Return follows a backslash or is pressed with shift or meta, so surrounding UI can tell submission from line continuation.
Details
The cursor-position guard for the backslash check moved into the shared predicate, fixing an inconsistency where the inner branch required a non-zero cursor offset and the outer one did not.
Evidence
willInsertNewline
Strings lifted out of the shipped bundle, so the claim above can be checked against them.