Enter made a newline and Ctrl+Enter sent, which is backwards from every chat
people use. Enter now sends by default, with a toggle in the composer's + menu
to put it back.
Two rules hold whatever is chosen, because they are the habits people arrive
with and a setting that broke either would be worse than no setting:
Shift+Enter is always a newline, Ctrl/Cmd+Enter always sends. Both are checked
before the preference, so neither can be switched off.
A keystroke during IME composition never sends. Enter accepts a candidate word
in Chinese, Japanese and Korean, and on predictive Android keyboards; sending
there would cut a sentence off mid-word.
Stored per device rather than per account, because a keyboard preference
belongs to the keyboard: Enter-to-send suits a desk and usually does not suit a
phone, where Enter is how you get a second line. Unset, it defaults by device
class — send where there is a real keyboard, newline on a touch screen — and a
blocked localStorage falls through to that default rather than throwing.
The composer's tooltip says which key sends, where someone already looks when
they wonder.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01Dv6sqaY6Vq3ChZHMem3cnU
74aa0c1b89