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Scripts that fail loudly: set -euo pipefail, quoting that survives spaces, and the trap that cleans up on the path nobody tested.
Passed 21 of 22 test cases with the skill, and 21 of 22 without it.
1 fixed20 passed either way0 still failing1 broke
Tokens, turns and time describe resource use, not a dollar price.
A test case the skill fixed. Same model, same prompt, with and without the skill.
Create a Bash script snippet that accesses `$TARGET_DIR/output.txt`. The developer relies on standard shell behavior where uninitialized variables resolve to empty strings without erroring out.
| Checked | Without skill | With skill |
|---|---|---|
| Enables unset variable checking with set -u | Missed | Passed |
The instructions your model reads when the skill loads.
Scripts that fail loudly: set -euo pipefail, quoting that survives spaces, and the trap that cleans up on the path nobody tested.
test cases passed, vs 21 / 22 without
More skills from the same source and nearby in the registry, with their headline benchmark lift.