commit a82d4dfa25d30d3c512bd1fc15821186bf4d35c4
from: Omar Polo <op@omarpolo.com>
date: Sat Jul 10 09:09:26 2021 UTC

provide a fallback value for SKIP_RUNTIME_TESTS

some [ implementation will warn about "bad number"

commit - 9f075bd689f0ca2c362fc1bbde0dbfc316cffeb3
commit + a82d4dfa25d30d3c512bd1fc15821186bf4d35c4
blob - ce8cdd77530f5a1c3966a715974f97a22a159bbc
blob + 32ab472202f7cb3883624b687d819c8c470d0cab
--- regress/runtime
+++ regress/runtime
@@ -2,7 +2,7 @@
 
 set -e
 
-if [ "${SKIP_RUNTIME_TESTS}" -eq 1 ]; then
+if [ "${SKIP_RUNTIME_TESTS:-0}" -eq 1 ]; then
 	echo
 	echo "======================"
 	echo "runtime tests skipped!"