rewrite bash script

Author: donbarbos

.github/workflows/stubsabot.yml

@@ -39,15 +39,22 @@ jobs:
         shell: bash
         run: |
           # Parse stubsabot.py output to find stubs that should be tested.
-          set -o pipefail
           exec 5>&1
-          STUBS=$(script -qfc "GITHUB_TOKEN=${{ secrets.GITHUB_TOKEN }} python scripts/stubsabot.py --action-level nothing" /dev/null \
-            | tee >(cat - >&5) \
-            | sed -r "s/\x1B\[[0-9;]*[mK]//g" \
-            | grep 'should be tested by stubsabot' \
-            | awk '{print $1}' \
-            | xargs)
-          exit_code=$?
+          EXIT_FILE=$(mktemp)
+          STUBS_FILE=$(mktemp)
+          script -q /dev/null -c '
+            python scripts/stubsabot.py --action-level nothing
+            echo $? > '"$EXIT_FILE"'
+          ' 2>&1 | while IFS= read -r line; do
+              echo "$line" >&5
+              clean=$(echo "$line" | sed -r "s/\x1B\[[0-9;]*[mK]//g")
+              if [[ $clean == *"should be tested by stubsabot"* ]]; then
+                  echo "${clean%% *}" >> "$STUBS_FILE"
+              fi
+          done
+          exit_code=$(cat "$EXIT_FILE")
+          STUBS=$(xargs < "$STUBS_FILE")
+          rm "$EXIT_FILE" "$STUBS_FILE"
           echo "STUBS=$STUBS" >> $GITHUB_OUTPUT
           exit $exit_code