When log behavior depends on configuration (e.g., `WARP_CHANNEL`) or when scripts auto-select an environment/tool (e.g., which Xcode app to use), make the behavior explicit and observable: - Handle known values with clear conditional branches (use `elif` for each supported channel/value). - For any unrecognized/unsupported configuration, emit a warning log so issues are diagnosable. - Log the chosen option (selected log file, selected Xcode candidate/path, etc.) so users can verify what the script did. Example pattern (channel-aware log file selection): ```sh if [ "$WARP_CHANNEL" = "local" ]; then LOG_FILE=~/Library/Logs/warp_local.log elif [ "$WARP_CHANNEL" = "oss" ]; then LOG_FILE=~/Library/Logs/warp_oss.log else echo "Warning: unrecognized WARP_CHANNEL='$WARP_CHANNEL'" >&2 LOG_FILE=~/Library/Logs/warp.log fi echo "Using log file: $LOG_FILE" ```