t2856: refactor trigger_reasons to use array in pulse-wrapper.sh#2886
t2856: refactor trigger_reasons to use array in pulse-wrapper.sh#2886alex-solovyev merged 1 commit intomainfrom
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Summary of ChangesHello, I'm Gemini Code Assist1! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed! This pull request refactors the Highlights
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Code Review
This pull request effectively refactors the construction of the trigger_reasons string in pulse-wrapper.sh by using a bash array. This change significantly improves code clarity and maintainability. I have one suggestion to further refine the array-to-string conversion for better performance and to follow a more modern bash idiom, aligning with our guidelines to use pure Bash features for string manipulations to avoid subshells.
| trigger_reasons=$( | ||
| IFS=', ' | ||
| echo -n "${reasons[*]}" | ||
| ) |
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To improve performance and adhere to best practices for string manipulation in Bash, use printf -v to build the string directly into a variable and then trim the trailing separator. This method avoids the overhead of creating a subshell, aligning with the principle of using pure Bash features for efficiency.
| trigger_reasons=$( | |
| IFS=', ' | |
| echo -n "${reasons[*]}" | |
| ) | |
| printf -v trigger_reasons '%s, ' "${reasons[@]}" | |
| trigger_reasons="${trigger_reasons%, }" |
References
- In shell scripts, use pure Bash parameter expansion for string manipulations like calculating indentation within loops to avoid spawning subshells and improve performance.
- Sanitize process names in log entries to prevent log injection via crafted command lines (strip control chars, truncate to 200 chars) - Replace grep -v grep anti-pattern with bracket trick ([.]opencode) across 4 call sites — prevents false exclusions from substring match - Replace echo | grep subshell with [[ =~ ]] in cleanup_orphans for process filtering — eliminates 2 subshell forks per iteration - Use printf -v instead of subshell for trigger_reasons string join (PR #2886 review feedback) The critical grep -v $$ security bypass was already fixed in a prior refactor (guard_child_processes uses awk -v parent=$$ for exact match). Closes #2892
- Sanitize process names in log entries to prevent log injection via crafted command lines (strip control chars, truncate to 200 chars) - Replace grep -v grep anti-pattern with bracket trick ([.]opencode) across 4 call sites — prevents false exclusions from substring match - Replace echo | grep subshell with [[ =~ ]] in cleanup_orphans for process filtering — eliminates 2 subshell forks per iteration - Use printf -v instead of subshell for trigger_reasons string join (PR #2886 review feedback) The critical grep -v $$ security bypass was already fixed in a prior refactor (guard_child_processes uses awk -v parent=$$ for exact match). Closes #2892
…#2913) - Sanitize process names in log entries to prevent log injection via crafted command lines (strip control chars, truncate to 200 chars) - Replace grep -v grep anti-pattern with bracket trick ([.]opencode) across 4 call sites — prevents false exclusions from substring match - Replace echo | grep subshell with [[ =~ ]] in cleanup_orphans for process filtering — eliminates 2 subshell forks per iteration - Use printf -v instead of subshell for trigger_reasons string join (PR #2886 review feedback) The critical grep -v $$ security bypass was already fixed in a prior refactor (guard_child_processes uses awk -v parent=$$ for exact match). Closes #2892
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Summary
trigger_reasonsstring construction in_quality_sweep_for_repo()to use a bash array instead of repetitiveif [[ -n "$trigger_reasons" ]]checksreasons=()array, then joins withIFS=', '— cleaner, more maintainable, and easier to extend with future conditionsContext
Addresses medium-severity review feedback from Gemini Code Assist on PR #2852. The original code used manual string concatenation with an emptiness check on each append. The array pattern eliminates the duplication and makes adding new trigger conditions a one-liner.
Verification
shellcheckpasses with zero violationsbash -nsyntax check passestrigger_activeandtrigger_reasonsproduce the same values for all condition combinationsCloses #2856