Fix no-cheat check (#71)

Author: nfx

.github/workflows/push.yml

@@ -63,8 +63,8 @@ jobs:
       - name: Verify no lint disabled in the new code
         run: |
           NEW_CODE=$(git diff origin/main..$(git branch --show-current) | grep -e '^+')
-          CHEAT=$(echo "${NEW_CODE}" | grep '# pylint: disable')
-          if [ -n "${CHEAT}" ]; then
+          CHEAT=$(echo "${NEW_CODE}" | grep '# pylint: disable' | grep -v "CHEAT" | wc -c)
+          if [ "${CHEAT}" -ne 0 ]; then
             echo "Do not cheat the linter: ${CHEAT}"
             exit 1
           fi