Files
optimclaw/crates/ironclaw_engine
[email protected]andClaude Opus 4.6 4bfcc9cd61 fix(engine): replace byte-index slicing with char-safe truncation
Panic: 'byte index 80 is not a char boundary; it is inside ''' when
tool output contained multi-byte UTF-8 characters (smart quotes from
web search results).

Fixed 4 unsafe byte-index slices:
- thread.rs:281: message preview &content[..80] → chars().take(80)
- loop_engine.rs:556: tool output &str[..4000] → chars().take(4000)
- loop_engine.rs:579: output tail &str[len-8000..] → chars().skip()
- scripting.rs:82: stdout tail &str[len-N..] → chars().skip()

All now use .chars().take() or .chars().skip() which respect character
boundaries. Follows CLAUDE.md rule: "Never use byte-index slicing on
user-supplied or external strings."

Co-Authored-By: Claude Opus 4.6 (1M context) <[email protected]>
2026-03-23 13:01:03 -07:00
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