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daemon: fix UTF-8 panics on multi-byte character truncation

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&str[..n] panics when n falls inside a multi-byte UTF-8 sequence.
This crashed the daemon when processing IRC messages containing
Hebrew/Yiddish characters (ehashman's messages hit byte 79-81).

Replace all byte-index truncation with chars().take(n).collect()
in tmux send_prompt preview, notification logging, and git context
truncation.

Co-Authored-By: ProofOfConcept <poc@bcachefs.org>
This commit is contained in:
ProofOfConcept 2026-03-05 21:15:40 -05:00
parent 308fbe4c28
commit bea1bd5680
3 changed files with 4 additions and 3 deletions
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2
src/bin/poc-daemon/notify.rs
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@ -169,7 +169,7 @@ impl NotifyState {
info!(
"notification: type={ntype} urgency={urgency} threshold={threshold} msg={}",
&message[..message.len().min(80)]
message.chars().take(80).collect::<String>()
);
self.pending.push(Notification {