Self-review completed after opening the draft PR.

I re-read the PR diff and checked the bash expansion behavior on Bash 3.2 for the affected states:

• original expansion fails with chpwd_functions[@]: unbound variable under set -u
• patched expansion succeeds when chpwd_functions is unset
• patched expansion succeeds when chpwd_functions is declared but empty
• patched expansion succeeds when chpwd_functions=()
• patched expansion preserves entries containing spaces as single hook names

I did not find any changes needed from self-review.

Note: This comment was generated by an AI coding assistant.

Greptile Summary

Fixes a bash crash under set -u when chpwd_functions is unset by applying the same nounset-safe array expansion idiom (${arr[@]+"${arr[@]}"}) already used for __MISE_FLAGS elsewhere in the activation script.

• src/assets/bash_zsh_support/chpwd/function.sh: replaces "${chpwd_functions[@]}" with ${chpwd_functions[@]+"${chpwd_functions[@]}"}, which expands to nothing when the array is unset rather than triggering an unbound variable error.
• e2e/env/test_bash_chpwd_functions_nounset: adds a focused end-to-end test that activates mise, unsets chpwd_functions, and calls cd . under set -euo pipefail to reproduce and verify the fix.
• Snapshot: updated to match the new expansion in function.sh.

Confidence Score: 5/5

Safe to merge — the one-line change is a well-known bash idiom that is correct for unset, empty-array, and populated-array cases, and the new e2e test directly covers the reported failure scenario.

The change is minimal and targeted: a single substitution in one shell function, backed by an automated e2e test that exercises the exact failure path. The idiom is the canonical nounset-safe pattern for bash arrays and behaves correctly across all three states of chpwd_functions (unset, empty, non-empty). The snapshot update is mechanical.

No files require special attention.

Important Files Changed

_{Reviews (1): Last reviewed commit: "fix(activate): guard bash chpwd hook und..." | Re-trigger Greptile}