What
Starting with --session-id alongside --continue or --resume used to require --fork-session. That combination is now also accepted when an SDK URL is supplied. The error text is otherwise unchanged.
Evidence
Error: --session-id can only be used with --continue or --resume if --fork-session is also specified.
Strings lifted out of the shipped bundle, so the claim above can be checked against them.
The entry above is what we published on the day. These lines were added later, as Anthropic's own pages caught up, and they sit beside the original rather than replacing it.
Confirmed since
Anthropic's documentation has since written up --resume, on Claude Code changelog.
* Improved `--continue` / `--resume`: the conversation appears immediately instead of waiting for SessionStart hooks, and the first message no longer re-reads the whole transcriptchangelog see the edit
Confirmed since
Anthropic's documentation has since written up --continue, on Claude Code changelog.
* Improved `--continue` / `--resume`: the conversation appears immediately instead of waiting for SessionStart hooks, and the first message no longer re-reads the whole transcriptchangelog see the edit
One source agreesOne thing we can check says the same as this entry.
Anthropic's documentation agrees
Anthropic's documentation has since written up --continue, on Claude Code changelog.