Unclear It is not clear whether the new preview protection is always on or controlled by a switch.
What
When Claude asks to edit or write a file, Claude Code shows you a preview of the change before you approve it. Now:
- Carriage returns and Unicode line separators, characters that can break a line without looking like it, appear as
[line break]markers - Text that imitates those markers is neutralised
- A preview that cannot be shown in full is held back, and you can approve that change only once
For notebooks, the message "Proposed cell content is too large to show" now reads "Proposed cell content cannot be shown in full".
Why
A change can no longer use hidden line breaks to look different in the approval dialog from what it really does.
Something disagreesSomething we can check disagrees with this entry, or the writer said they could not settle it.
The writer flagged doubt
It is not clear whether the new preview protection is always on or controlled by a switch.