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ci: fix trunk build by replacing bash 4 mapfile with portable loop #519

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jkmassel merged 1 commit into from
May 26, 2026
+6 −1
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ci: fix trunk build by replacing bash 4 mapfile with portable loop #519

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7 changes: 6 additions & 1 deletion .buildkite/cleanup-pr-build-branches.sh
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Original file line number Diff line number Diff line change
Expand Up @@ -22,7 +22,12 @@ echo '--- :robot_face: Use bot for Git operations'
source use-bot-for-git

echo "--- :mag: Listing pr-build/* branches on origin"
mapfile -t branches < <(
# `mapfile` is Bash 4+; macOS CI agents ship Bash 3.2, so use a portable
# `while read` loop instead.
branches=()
while IFS= read -r branch; do
branches+=("$branch")
done < <(
git ls-remote --heads origin 'refs/heads/pr-build/*' \
| awk '{print $2}' \
| sed 's|^refs/heads/||'
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