Quote the marker path as a Bash literal before escaping it for sed, so TMPDIR metacharacters survive both fixture copying and script evaluation. Rerun the firmware regression under a special-character TMPDIR while preserving the original PATH for real pacman resolution. Co-Authored-By: GPT-6.1-Sol <noreply@openai.com> Co-Authored-By: Greptile <165735046+greptile-apps[bot]@users.noreply.github.com>