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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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3
src/bin/poc-daemon/tmux.rs
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@ -32,7 +32,8 @@ pub fn find_claude_pane() -> Option<String> {
///
/// Sequence: Escape q C-c C-u (clear input), wait, type message, Enter.
pub fn send_prompt(pane: &str, msg: &str) -> bool {
info!("SEND [{pane}]: {}...", &msg[..msg.len().min(100)]);
let preview: String = msg.chars().take(100).collect();
info!("SEND [{pane}]: {preview}...");
let send = |keys: &[&str]| {
Command::new("tmux")